2024
|
Lee, Jong Hak; Loh, Duane N; Yeo, Zhen Yuan; Ong, Yong Kang; Balakrishnan, Deepan; Limpo, Carlos Maria Alava; Datta, Abhik; Cetin, Cagdas; Ning, Shoucong; Wong, Clarissa; Shi, Jian; Hou, Fuchen; Lin, Junhao; Minamikawa, Tadahiro; Ito, Tomonori; Kamisuki, Hiroyuki; Pennycook, Stephen; Matsudaira, Paul; Ozyilmaz, Barbaros Engineering a Hierarchy of Disorder: A New Route to Synthesize High-Performance 3D Nanoporous All-Carbon Materials ADVANCED MATERIALS, 36 (32), 2024, DOI: 10.1002/adma.202402628. Abstract | BibTeX | Endnote @article{ISI:001239151600001,
title = {Engineering a Hierarchy of Disorder: A New Route to Synthesize High-Performance 3D Nanoporous All-Carbon Materials},
author = {Jong Hak Lee and Duane N Loh and Zhen Yuan Yeo and Yong Kang Ong and Deepan Balakrishnan and Carlos Maria Alava Limpo and Abhik Datta and Cagdas Cetin and Shoucong Ning and Clarissa Wong and Jian Shi and Fuchen Hou and Junhao Lin and Tadahiro Minamikawa and Tomonori Ito and Hiroyuki Kamisuki and Stephen Pennycook and Paul Matsudaira and Barbaros Ozyilmaz},
doi = {10.1002/adma.202402628},
times_cited = {0},
issn = {0935-9648},
year = {2024},
date = {2024-06-04},
journal = {ADVANCED MATERIALS},
volume = {36},
number = {32},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {A new nanoporous amorphous carbon (NAC) structure that achieves both ultrahigh strength and high electrical conductivity, which are usually incompatible in porous materials is reported. By using modified spark plasma sintering, three amorphous carbon phases with different atomic bonding configurations are created. The composite consisted of an amorphous sp(2)-carbon matrix mixed with amorphous sp(3)-carbon and amorphous graphitic motif. NAC structure has an isotropic electrical conductivity of up to 12 000 S m(-1), Young's modulus of up to approximate to 5 GPa, and Vickers hardness of over 900 MPa. These properties are superior to those of existing conductive nanoporous materials. Direct investigation of the multiscale structure of this material through transmission electron microscopy, electron energy loss spectroscopy, and machine learning-based electron tomography revealed that the origin of the remarkable material properties is the well-organized sp(2)/sp(3) amorphous carbon phases with a core-shell-like architecture, where the sp(3)-rich carbon forms a resilient core surrounded by a conductive sp(2)-rich layer. This research not only introduces novel materials with exceptional properties but also opens new opportunities for exploring amorphous structures and designing high-performance materials.},
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A new nanoporous amorphous carbon (NAC) structure that achieves both ultrahigh strength and high electrical conductivity, which are usually incompatible in porous materials is reported. By using modified spark plasma sintering, three amorphous carbon phases with different atomic bonding configurations are created. The composite consisted of an amorphous sp(2)-carbon matrix mixed with amorphous sp(3)-carbon and amorphous graphitic motif. NAC structure has an isotropic electrical conductivity of up to 12 000 S m(-1), Young's modulus of up to approximate to 5 GPa, and Vickers hardness of over 900 MPa. These properties are superior to those of existing conductive nanoporous materials. Direct investigation of the multiscale structure of this material through transmission electron microscopy, electron energy loss spectroscopy, and machine learning-based electron tomography revealed that the origin of the remarkable material properties is the well-organized sp(2)/sp(3) amorphous carbon phases with a core-shell-like architecture, where the sp(3)-rich carbon forms a resilient core surrounded by a conductive sp(2)-rich layer. This research not only introduces novel materials with exceptional properties but also opens new opportunities for exploring amorphous structures and designing high-performance materials. - FNClarivate Analytics Web of Science
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- PTJ
- AULee, JH
Loh, ND
Yeo, ZY
Ong, YK
Balakrishnan, D
Limpo, CMA
Datta, A
Cetin, C
Ning, SC
Wong, C
Shi, J
Hou, FC
Lin, JH
Minamikawa, T
Ito, T
Kamisuki, H
Pennycook, S
Matsudaira, P
Özyilmaz, B
- AFJong Hak Lee
Duane N Loh
Zhen Yuan Yeo
Yong Kang Ong
Deepan Balakrishnan
Carlos Maria Alava Limpo
Abhik Datta
Cagdas Cetin
Shoucong Ning
Clarissa Wong
Jian Shi
Fuchen Hou
Junhao Lin
Tadahiro Minamikawa
Tomonori Ito
Hiroyuki Kamisuki
Stephen Pennycook
Paul Matsudaira
Barbaros Ozyilmaz
- TIEngineering a Hierarchy of Disorder: A New Route to Synthesize High-Performance 3D Nanoporous All-Carbon Materials
- SOADVANCED MATERIALS
- LAEnglish
- DTArticle
- DEElectrical Conductivity; High Strength Nanoporous Structure); Multiphase Composites; Sp(2)-sp(3) Mixed Amorphous Carbon
- IDELECTRICAL-CONDUCTIVITY; AMORPHOUS-CARBON; POROSITY
- ABA new nanoporous amorphous carbon (NAC) structure that achieves both ultrahigh strength and high electrical conductivity, which are usually incompatible in porous materials is reported. By using modified spark plasma sintering, three amorphous carbon phases with different atomic bonding configurations are created. The composite consisted of an amorphous sp(2)-carbon matrix mixed with amorphous sp(3)-carbon and amorphous graphitic motif. NAC structure has an isotropic electrical conductivity of up to 12 000 S m(-1), Young's modulus of up to approximate to 5 GPa, and Vickers hardness of over 900 MPa. These properties are superior to those of existing conductive nanoporous materials. Direct investigation of the multiscale structure of this material through transmission electron microscopy, electron energy loss spectroscopy, and machine learning-based electron tomography revealed that the origin of the remarkable material properties is the well-organized sp(2)/sp(3) amorphous carbon phases with a core-shell-like architecture, where the sp(3)-rich carbon forms a resilient core surrounded by a conductive sp(2)-rich layer. This research not only introduces novel materials with exceptional properties but also opens new opportunities for exploring amorphous structures and designing high-performance materials.
- C1[Lee, Jong Hak; Ong, Yong Kang; Cetin, Cagdas; Wong, Clarissa; Ozyilmaz, Barbaros] Natl Univ Singapore, Ctr Adv Mat 2D CA2DM, Singapore 117546, Singapore.
[Lee, Jong Hak; Loh, N. Duane; Yeo, Zhen Yuan; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore. [Loh, N. Duane; Yeo, Zhen Yuan; Balakrishnan, Deepan; Datta, Abhik; Matsudaira, Paul] Natl Univ Singapore, Dept Biol Sci, Singapore 117558, Singapore. [Loh, N. Duane; Yeo, Zhen Yuan; Balakrishnan, Deepan; Shi, Jian; Matsudaira, Paul] Natl Univ Singapore, Ctr Bioimaging Sci, Singapore 117543, Singapore. [Limpo, Carlos Maria Alava; Ning, Shoucong; Pennycook, Stephen; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore. [Hou, Fuchen; Lin, Junhao] Southern Univ Sci & Technol, Southern Univ Sci & Technol, Dept Phys, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China. [Minamikawa, Tadahiro; Ito, Tomonori; Kamisuki, Hiroyuki] Chem Device Dept Murata Mfg Co Ltd, Yasu, Shiga 5202393, Japan. [Ozyilmaz, Barbaros] Natl Univ Singapore, Inst Funct Intelligent Mat I FIM, Singapore 117544, Singapore - C3National University of Singapore; National University of Singapore; National University of Singapore; National University of Singapore; National University of Singapore; Southern University of Science & Technology; National University of Singapore
- RPÖzyilmaz, B (corresponding author), Natl Univ Singapore, Ctr Adv Mat 2D CA2DM, Singapore 117546, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Inst Funct Intelligent Mat I FIM, Singapore 117544, Singapore
- FUNational Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Programme (CRP award) [NRF-CRP22-2019-008]; National Research Foundation, Prime Minister's Office, Singapore, under Medium-Sized Centre Programme (CA2DM) [EDUNC-33-18-279-V12]; Ministry of Education of Singapore, under its Research Centre of Excellence award [S22-19013-STDP]; EDB Singapore, under its Space Technology Development Programme [NRF-CRP16-2015-05]; Competitive Research Programme (CRP award) by the National Research Foundation, Prime Minister's Office, Singapore [11974156]; Singapore Ministry of Education AcRF Tier 1 Grant [ZDSYS20190902092905285, KQTD20190929173815000]; National University of Singapore, Early Career Research Grant; National Natural Science Foundation of China; Science, Technology and Innovation Commission of Shenzhen Municipality; Presidential fund and Development and Reform Commission of Shenzhen Municipality
- FXB.OE. acknowledges support by the National Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Programme (CRP award number NRF-CRP22-2019-008) and Medium-Sized Centre Programme (CA2DM), by Ministry of Education of Singapore, under its Research Centre of Excellence award to the Institute for Functional Intelligent Materials (I-FIM, Project No. EDUNC-33-18-279-V12), and by EDB Singapore, under its Space Technology Development Programme (S22-19013-STDP). N.D.L. thanks the support of the Competitive Research Programme (CRP award number NRF-CRP16-2015-05) by the National Research Foundation, Prime Minister's Office, Singapore, Singapore Ministry of Education AcRF Tier 1 Grant and the National University of Singapore, Early Career Research Grant (N.D.L.). F.H. and J.L. would like to acknowledge the support from National Natural Science Foundation of China (Grant No.11974156), the Science, Technology and Innovation Commission of Shenzhen Municipality (No. ZDSYS20190902092905285 and KQTD20190929173815000), and also the assistance of SUSTech Core Research Facilities, especially technical support from Cryo-EM Center and Pico-Centre that receives support from Presidential fund and Development and Reform Commission of Shenzhen Municipality.
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Wang, Zhe; Kalathingal, Vijith; Trushin, Maxim; Liu, Jiawei; Wang, Junyong; Guo, Yongxin; Ozyilmaz, Barbaros; Nijhuis, Christian A; Eda, Goki Upconversion electroluminescence in 2D semiconductors integrated with plasmonic tunnel junctions NATURE NANOTECHNOLOGY, 19 (7), 2024, DOI: 10.1038/s41565-024-01650-0. Abstract | BibTeX | Endnote @article{ISI:001205711600001,
title = {Upconversion electroluminescence in 2D semiconductors integrated with plasmonic tunnel junctions},
author = {Zhe Wang and Vijith Kalathingal and Maxim Trushin and Jiawei Liu and Junyong Wang and Yongxin Guo and Barbaros Ozyilmaz and Christian A Nijhuis and Goki Eda},
doi = {10.1038/s41565-024-01650-0},
times_cited = {1},
issn = {1748-3387},
year = {2024},
date = {2024-04-19},
journal = {NATURE NANOTECHNOLOGY},
volume = {19},
number = {7},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {Plasmonic tunnel junctions are a unique electroluminescent system in which light emission occurs via an interplay between tunnelling electrons and plasmonic fields instead of electron-hole recombination as in conventional light-emitting diodes. It was previously shown that placing luminescent molecules in the tunneling pathway of nanoscopic tunnel junctions results in peculiar upconversion electroluminescence where the energy of emitted photons exceeds that of excitation electrons. Here we report the observation of upconversion electroluminescence in macroscopic van der Waals plasmonic tunnel junctions comprising gold and few-layer graphene electrodes separated by a similar to 2-nm-thick hexagonal boron nitride tunnel barrier and a monolayer semiconductor. We find that the semiconductor ground exciton emission is triggered at excitation electron energies lower than the semiconductor optical gap. Interestingly, this upconversion is reached in devices operating at a low conductance (<10(-6) S) and low power density regime (<10(2) W cm(-2)), defying explanation through existing proposed mechanisms. By examining the scaling relationship between plasmonic and excitonic emission intensities, we elucidate the role of inelastic electron tunnelling dipoles that induce optically forbidden transitions in the few-layer graphene electrode and ultrafast hot carrier transfer across the van der Waals interface.},
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Plasmonic tunnel junctions are a unique electroluminescent system in which light emission occurs via an interplay between tunnelling electrons and plasmonic fields instead of electron-hole recombination as in conventional light-emitting diodes. It was previously shown that placing luminescent molecules in the tunneling pathway of nanoscopic tunnel junctions results in peculiar upconversion electroluminescence where the energy of emitted photons exceeds that of excitation electrons. Here we report the observation of upconversion electroluminescence in macroscopic van der Waals plasmonic tunnel junctions comprising gold and few-layer graphene electrodes separated by a similar to 2-nm-thick hexagonal boron nitride tunnel barrier and a monolayer semiconductor. We find that the semiconductor ground exciton emission is triggered at excitation electron energies lower than the semiconductor optical gap. Interestingly, this upconversion is reached in devices operating at a low conductance (<10(-6) S) and low power density regime (<10(2) W cm(-2)), defying explanation through existing proposed mechanisms. By examining the scaling relationship between plasmonic and excitonic emission intensities, we elucidate the role of inelastic electron tunnelling dipoles that induce optically forbidden transitions in the few-layer graphene electrode and ultrafast hot carrier transfer across the van der Waals interface. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AUWang, Z
Kalathingal, V
Trushin, M
Liu, JW
Wang, JY
Guo, YX
Özyilmaz, B
Nijhuis, CA
Eda, G
- AFZhe Wang
Vijith Kalathingal
Maxim Trushin
Jiawei Liu
Junyong Wang
Yongxin Guo
Barbaros Ozyilmaz
Christian A Nijhuis
Goki Eda
- TIUpconversion electroluminescence in 2D semiconductors integrated with plasmonic tunnel junctions
- SONATURE NANOTECHNOLOGY
- LAEnglish
- DTArticle
- IDLIGHT-EMISSION; LUMINESCENT EXCITONS; ENERGY-TRANSFER; ORIENTATION
- ABPlasmonic tunnel junctions are a unique electroluminescent system in which light emission occurs via an interplay between tunnelling electrons and plasmonic fields instead of electron-hole recombination as in conventional light-emitting diodes. It was previously shown that placing luminescent molecules in the tunneling pathway of nanoscopic tunnel junctions results in peculiar upconversion electroluminescence where the energy of emitted photons exceeds that of excitation electrons. Here we report the observation of upconversion electroluminescence in macroscopic van der Waals plasmonic tunnel junctions comprising gold and few-layer graphene electrodes separated by a similar to 2-nm-thick hexagonal boron nitride tunnel barrier and a monolayer semiconductor. We find that the semiconductor ground exciton emission is triggered at excitation electron energies lower than the semiconductor optical gap. Interestingly, this upconversion is reached in devices operating at a low conductance (<10(-6) S) and low power density regime (<10(2) W cm(-2)), defying explanation through existing proposed mechanisms. By examining the scaling relationship between plasmonic and excitonic emission intensities, we elucidate the role of inelastic electron tunnelling dipoles that induce optically forbidden transitions in the few-layer graphene electrode and ultrafast hot carrier transfer across the van der Waals interface.
- C1[Wang, Zhe; Eda, Goki] Natl Univ Singapore, Dept Chem, Singapore, Singapore.
[Wang, Zhe; Kalathingal, Vijith; Guo, Yongxin] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore, Singapore. [Kalathingal, Vijith] Kannur Univ, Dept Phys, Swami Anandatheertha Campus Payyanur, Kannur, India. [Trushin, Maxim; Liu, Jiawei; Ozyilmaz, Barbaros] Natl Univ Singapore, Inst Funct Intelligent Mat, Singapore, Singapore. [Trushin, Maxim; Liu, Jiawei; Ozyilmaz, Barbaros; Eda, Goki] Natl Univ Singapore, Ctr Adv 2D Mat & Graphene Res Ctr, Singapore, Singapore. [Trushin, Maxim; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore. [Liu, Jiawei; Ozyilmaz, Barbaros; Eda, Goki] Natl Univ Singapore, Dept Phys, Singapore, Singapore. [Wang, Junyong] Suzhou Inst Nanotech & Nanobion, Chinese Acad Sci, CAS Key Lab Nanobio Interface, i Lab, Suzhou, Peoples R China. [Wang, Junyong] Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Nanodevices & Applicat, i Lab, Suzhou, Peoples R China. [Nijhuis, Christian A.] Univ Twente, Mol Ctr, Fac Sci & Technol, Hybrid Mat Optoelect Grp,Dept Mol & Mat,MESA Inst, Enschede, Netherlands. [Nijhuis, Christian A.] Univ Twente, Fac Sci & Technol, Ctr Brain Inspired Nano Syst, Enschede, Netherlands - C3National University of Singapore; National University of Singapore; National University of Singapore; Institute for Functional Intelligent Materials (I-FIM); National University of Singapore; National University of Singapore; National University of Singapore; Chinese Academy of Sciences; Suzhou Institute of Nano-Tech & Nano-Bionics, CAS; Chinese Academy of Sciences; Suzhou Institute of Nano-Tech & Nano-Bionics, CAS; University of Twente; University of Twente
- RPEda, G (corresponding author), Natl Univ Singapore, Dept Chem, Singapore, Singapore; Eda, G (corresponding author), Natl Univ Singapore, Ctr Adv 2D Mat & Graphene Res Ctr, Singapore, Singapore; Eda, G (corresponding author), Natl Univ Singapore, Dept Phys, Singapore, Singapore; Nijhuis, CA (corresponding author), Univ Twente, Mol Ctr, Fac Sci & Technol, Hybrid Mat Optoelect Grp,Dept Mol & Mat,MESA Inst, Enschede, Netherlands; Nijhuis, CA (corresponding author), Univ Twente, Fac Sci & Technol, Ctr Brain Inspired Nano Syst, Enschede, Netherlands
- FUMinistry of Education (MOE), Singapore, under Academic Research Fund (AcRF) Tier 3 [MOE2018-T3-1-005]; National Research Foundation (NRF), under the Prime Minister's Office, Singapore, under the Medium Sized Centre Programme [NRF-CRP17-2017-08]; Competitive Research Programme (CRP) [EDUNC-33-18-279-V12]; Institute for Functional Intelligent Materials (I-FIM) [NRF-NRFI2018-8]; Singapore NRF Investigatorship [MOE-T2EP50220-0017]; MOE-AcRF-Tier 2 [2021YFA1200804]; National Key R&D Program of China
- FXWe acknowledge the support from the Ministry of Education (MOE), Singapore, under Academic Research Fund (AcRF) Tier 3 (grant no. MOE2018-T3-1-005), and the National Research Foundation (NRF), under the Prime Minister's Office, Singapore, under the Medium Sized Centre Programme and the Competitive Research Programme (CRP) (grant no. NRF-CRP17-2017-08). M.T. acknowledges Institute for Functional Intelligent Materials (I-FIM, grant no. EDUNC-33-18-279-V12). B.OE. acknowledges the Singapore NRF Investigatorship (grant no. NRF-NRFI2018-8) and MOE-AcRF-Tier 2 (grant no. MOE-T2EP50220-0017). J.W. acknowledges the National Key R&D Program of China (grant no. 2021YFA1200804).
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Lai, Wenhui; Lee, Jong Hak; Shi, Lu; Liu, Yuqing; Pu, Yanhui; Ong, Yong Kang; Limpo, Carlos; Xiong, Ting; Rao, Yifan; Sow, Chorng Haur; Ozyilmaz, Barbaros High mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries JOURNAL OF ENERGY CHEMISTRY, 93 , pp. 253-263, 2024, DOI: 10.1016/j.jechem.2024.02.021. Abstract | BibTeX | Endnote @article{ISI:001203104900001,
title = {High mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries},
author = {Wenhui Lai and Jong Hak Lee and Lu Shi and Yuqing Liu and Yanhui Pu and Yong Kang Ong and Carlos Limpo and Ting Xiong and Yifan Rao and Chorng Haur Sow and Barbaros Ozyilmaz},
doi = {10.1016/j.jechem.2024.02.021},
times_cited = {3},
issn = {2095-4956},
year = {2024},
date = {2024-03-06},
journal = {JOURNAL OF ENERGY CHEMISTRY},
volume = {93},
pages = {253-263},
publisher = {ELSEVIER},
address = {RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS},
abstract = {Despite advancements in silicon -based anodes for high -capacity lithium -ion batteries, their widespread commercial adoption is still hindered by significant volume expansion during cycling, especially at high active mass loadings crucial for practical use. The root of these challenges lies in the mechanical instability of the material, which subsequently leads to the structural failure of the electrode. Here, we present a novel synthesis of a composite combining expanded graphite and silicon nanoparticles. This composite features a unique interlayer-bonded graphite structure, achieved through the application of a modified spark plasma sintering method. Notably, this innovative structure not only facilitates efficient ion and electron transport but also provides exceptional mechanical strength (Vickers hardness: up to 658 MPa, Young's modulus: 11.6 GPa). This strength effectively accommodates silicon expansion, resulting in an impressive areal capacity of 2.9 mA h cm -2 (736 mA h g-1) and a steady cycle life (93% after 100 cycles). Such outstanding performance is paired with features appropriate for large-scale industrial production of silicon batteries, such as active mass loading of at least 3.9 mg cm -2, a high -tap density electrode material of 1.68 g cm -3 (secondary clusters: 1.12 g cm -3), and a production yield of up to 1 kg per day. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.},
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Despite advancements in silicon -based anodes for high -capacity lithium -ion batteries, their widespread commercial adoption is still hindered by significant volume expansion during cycling, especially at high active mass loadings crucial for practical use. The root of these challenges lies in the mechanical instability of the material, which subsequently leads to the structural failure of the electrode. Here, we present a novel synthesis of a composite combining expanded graphite and silicon nanoparticles. This composite features a unique interlayer-bonded graphite structure, achieved through the application of a modified spark plasma sintering method. Notably, this innovative structure not only facilitates efficient ion and electron transport but also provides exceptional mechanical strength (Vickers hardness: up to 658 MPa, Young's modulus: 11.6 GPa). This strength effectively accommodates silicon expansion, resulting in an impressive areal capacity of 2.9 mA h cm -2 (736 mA h g-1) and a steady cycle life (93% after 100 cycles). Such outstanding performance is paired with features appropriate for large-scale industrial production of silicon batteries, such as active mass loading of at least 3.9 mg cm -2, a high -tap density electrode material of 1.68 g cm -3 (secondary clusters: 1.12 g cm -3), and a production yield of up to 1 kg per day. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AULai, WH
Lee, JH
Shi, L
Liu, YQ
Pu, YH
Ong, YK
Limpo, C
Xiong, T
Rao, YF
Sow, CH
Özyilmaz, B
- AFWenhui Lai
Jong Hak Lee
Lu Shi
Yuqing Liu
Yanhui Pu
Yong Kang Ong
Carlos Limpo
Ting Xiong
Yifan Rao
Chorng Haur Sow
Barbaros Ozyilmaz
- TIHigh mechanical strength Si anode synthesis with interlayer bonded expanded graphite structure for lithium-ion batteries
- SOJOURNAL OF ENERGY CHEMISTRY
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- DTArticle
- DELithium -ion Battery; Silicon Anode; Spark Plasma Sintering; Interlayer Bonding; Mechanical Strength; Tap Density
- IDSILICON ANODES; COMPOSITE; DESIGN
- ABDespite advancements in silicon -based anodes for high -capacity lithium -ion batteries, their widespread commercial adoption is still hindered by significant volume expansion during cycling, especially at high active mass loadings crucial for practical use. The root of these challenges lies in the mechanical instability of the material, which subsequently leads to the structural failure of the electrode. Here, we present a novel synthesis of a composite combining expanded graphite and silicon nanoparticles. This composite features a unique interlayer-bonded graphite structure, achieved through the application of a modified spark plasma sintering method. Notably, this innovative structure not only facilitates efficient ion and electron transport but also provides exceptional mechanical strength (Vickers hardness: up to 658 MPa, Young's modulus: 11.6 GPa). This strength effectively accommodates silicon expansion, resulting in an impressive areal capacity of 2.9 mA h cm -2 (736 mA h g-1) and a steady cycle life (93% after 100 cycles). Such outstanding performance is paired with features appropriate for large-scale industrial production of silicon batteries, such as active mass loading of at least 3.9 mg cm -2, a high -tap density electrode material of 1.68 g cm -3 (secondary clusters: 1.12 g cm -3), and a production yield of up to 1 kg per day. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.
- C1[Lai, Wenhui; Shi, Lu; Pu, Yanhui; Limpo, Carlos; Rao, Yifan; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore.
[Lee, Jong Hak; Ong, Yong Kang; Sow, Chorng Haur; Ozyilmaz, Barbaros] Natl Univ Singapore, Ctr Adv Mat 2D, Singapore 117546, Singapore. [Liu, Yuqing; Xiong, Ting; Sow, Chorng Haur; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore. [Ozyilmaz, Barbaros] Natl Univ Singapore, Inst Funct Intelligent Mat, Singapore 117544, Singapore - C3National University of Singapore; National University of Singapore; National University of Singapore; National University of Singapore; Institute for Functional Intelligent Materials (I-FIM)
- RPÖzyilmaz, B (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117575, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Ctr Adv Mat 2D, Singapore 117546, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Dept Phys, Singapore 117551, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Inst Funct Intelligent Mat, Singapore 117544, Singapore
- FUNational Research Foundation, Prime Minister's Office, Singapore [NRF-CRP22-2019-008, CA2DM]; Ministry of Education of Singapore [EDUNC-33-18-279-V12]; EDB Singapore [S22-19013-STDP];
- FXThis work was supported by the National Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Programme (CRP award number NRF-CRP22-2019-008) and Medium-Sized Centre Programme (CA2DM) , by the Ministry of Education of Singapore, under its Research Centre of Excellence award to the Institute for Functional Intelligent Materials (I-FIM, Project No. EDUNC-33-18-279-V12) , and by the EDB Singapore, under its Space Technology Development Programme (S22-19013-STDP) .
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Xiong, Ting; Zhang, Deqiang; Yeo, Jing Ying; Zhan, Yufeng; Ong, Yong Kang; Limpo, Carlos Maria Alava; Shi, Lu; Rao, Yifan; Pu, Yanhui; Lai, Wenhui; Lee, Jonghak; Lee, Wee Siang Vincent; Ozyilmaz, Barbaros Interfacial design towards stable zinc metal-free zinc-ion batteries with high energy density JOURNAL OF MATERIALS CHEMISTRY A, 12 (9), pp. 5499-5507, 2024, DOI: 10.1039/d3ta07674a. Abstract | BibTeX | Endnote @article{ISI:001156660000001,
title = {Interfacial design towards stable zinc metal-free zinc-ion batteries with high energy density},
author = {Ting Xiong and Deqiang Zhang and Jing Ying Yeo and Yufeng Zhan and Yong Kang Ong and Carlos Maria Alava Limpo and Lu Shi and Yifan Rao and Yanhui Pu and Wenhui Lai and Jonghak Lee and Wee Siang Vincent Lee and Barbaros Ozyilmaz},
doi = {10.1039/d3ta07674a},
times_cited = {1},
issn = {2050-7488},
year = {2024},
date = {2024-02-02},
journal = {JOURNAL OF MATERIALS CHEMISTRY A},
volume = {12},
number = {9},
pages = {5499-5507},
publisher = {ROYAL SOC CHEMISTRY},
address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND},
abstract = {Zinc metal-free zinc-ion batteries hold promise for achieving higher energy densities by eliminating the need for dense zinc foil as the anode. However, the direct use of substrates like copper foil in these batteries results in poor cyclic stability due to dendrite growth. Herein, we propose a strategy to modulate the nucleation sites and growth dynamics of Zn. This is achieved by introducing a graphene coating on the copper substrate, which directs the initial nucleation of Zn to form hexagonal plates. Subsequently, the incorporation of positively polarized poly(vinylidene fluoride-trifluoroethylene) promotes growth along these hexagonal plates, resulting in uniform crystalline plates. As a result, the half-cell demonstrated a significant improvement in the cyclic life of 3000 cycles at a high current density of 10 mA cm-2 and capacity of 1 mA h cm-2. When paired with Zn-inserted MnO2 cathode, the full cell exhibited high cyclic stability (retaining 83% capacity after 500 cycles at 1 mA cm-2) and energy density of 378 W h kg-1 at 0.5 mA cm-2. This is notably higher than the conventional Zn ion battery based on a Zn anode (136 W h kg-1). To showcase its potential, we prepared a pouch cell that successfully powered the electric fan and LED lights, suggesting its promising application in high-performance Zn ion batteries.},
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Zinc metal-free zinc-ion batteries hold promise for achieving higher energy densities by eliminating the need for dense zinc foil as the anode. However, the direct use of substrates like copper foil in these batteries results in poor cyclic stability due to dendrite growth. Herein, we propose a strategy to modulate the nucleation sites and growth dynamics of Zn. This is achieved by introducing a graphene coating on the copper substrate, which directs the initial nucleation of Zn to form hexagonal plates. Subsequently, the incorporation of positively polarized poly(vinylidene fluoride-trifluoroethylene) promotes growth along these hexagonal plates, resulting in uniform crystalline plates. As a result, the half-cell demonstrated a significant improvement in the cyclic life of 3000 cycles at a high current density of 10 mA cm-2 and capacity of 1 mA h cm-2. When paired with Zn-inserted MnO2 cathode, the full cell exhibited high cyclic stability (retaining 83% capacity after 500 cycles at 1 mA cm-2) and energy density of 378 W h kg-1 at 0.5 mA cm-2. This is notably higher than the conventional Zn ion battery based on a Zn anode (136 W h kg-1). To showcase its potential, we prepared a pouch cell that successfully powered the electric fan and LED lights, suggesting its promising application in high-performance Zn ion batteries. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AUXiong, T
Zhang, DQ
Yeo, JY
Zhan, YF
Ong, YK
Limpo, CMA
Shi, L
Rao, YF
Pu, YH
Lai, WH
Lee, JH
Lee, WSV
Özyilmaz, B
- AFTing Xiong
Deqiang Zhang
Jing Ying Yeo
Yufeng Zhan
Yong Kang Ong
Carlos Maria Alava Limpo
Lu Shi
Yifan Rao
Yanhui Pu
Wenhui Lai
Jonghak Lee
Wee Siang Vincent Lee
Barbaros Ozyilmaz
- TIInterfacial design towards stable zinc metal-free zinc-ion batteries with high energy density
- SOJOURNAL OF MATERIALS CHEMISTRY A
- LAEnglish
- DTArticle
- ABZinc metal-free zinc-ion batteries hold promise for achieving higher energy densities by eliminating the need for dense zinc foil as the anode. However, the direct use of substrates like copper foil in these batteries results in poor cyclic stability due to dendrite growth. Herein, we propose a strategy to modulate the nucleation sites and growth dynamics of Zn. This is achieved by introducing a graphene coating on the copper substrate, which directs the initial nucleation of Zn to form hexagonal plates. Subsequently, the incorporation of positively polarized poly(vinylidene fluoride-trifluoroethylene) promotes growth along these hexagonal plates, resulting in uniform crystalline plates. As a result, the half-cell demonstrated a significant improvement in the cyclic life of 3000 cycles at a high current density of 10 mA cm-2 and capacity of 1 mA h cm-2. When paired with Zn-inserted MnO2 cathode, the full cell exhibited high cyclic stability (retaining 83% capacity after 500 cycles at 1 mA cm-2) and energy density of 378 W h kg-1 at 0.5 mA cm-2. This is notably higher than the conventional Zn ion battery based on a Zn anode (136 W h kg-1). To showcase its potential, we prepared a pouch cell that successfully powered the electric fan and LED lights, suggesting its promising application in high-performance Zn ion batteries.
- C1[Xiong, Ting; Zhang, Deqiang; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Phys, Singapore, Singapore.
[Zhang, Deqiang; Yeo, Jing Ying; Zhan, Yufeng; Limpo, Carlos Maria Alava; Shi, Lu; Rao, Yifan; Pu, Yanhui; Lai, Wenhui; Lee, Wee Siang Vincent; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore. [Zhang, Deqiang; Yeo, Jing Ying; Ong, Yong Kang; Lee, Jonghak; Ozyilmaz, Barbaros] Natl Univ Singapore, Ctr Adv Mat 2D, Singapore, Singapore - C3National University of Singapore; National University of Singapore; National University of Singapore
- RPÖzyilmaz, B (corresponding author), Natl Univ Singapore, Dept Phys, Singapore, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Ctr Adv Mat 2D, Singapore, Singapore
- FUNational Research Foundation, Prime Minister's Office, Singapore [NRF-CRP22-2019-008]; Ministry of Education of Singapore [EDUNC-33-18-279-V12]; EDB Singapore [S22-19013-STDP]
- FXThis research is supported by Competitive Research Programme (CRP award number NRF-CRP22-2019-008) by the National Research Foundation, Prime Minister's Office, Singapore (B. OE.). Medium-Sized Centre Programme (CA2DM), by Ministry of Education of Singapore, under its Research Centre of Excellence award to the Institute for Functional Intelligent Materials (I-FIM, Project No. EDUNC-33-18-279-V12) (B. OE.), Space Technology Development Programme (S22-19013-STDP) by EDB Singapore (B. OE.).
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Cording, Luke; Liu, Jiawei; Tan, Jun You; Watanabe, Kenji; Taniguchi, Takashi; Avsar, Ahmet; Ozyilmaz, Barbaros Highly anisotropic spin transport in ultrathin black phosphorus NATURE MATERIALS, 23 (4), 2024, DOI: 10.1038/s41563-023-01779-8. Abstract | BibTeX | Endnote @article{ISI:001142010100002,
title = {Highly anisotropic spin transport in ultrathin black phosphorus},
author = {Luke Cording and Jiawei Liu and Jun You Tan and Kenji Watanabe and Takashi Taniguchi and Ahmet Avsar and Barbaros Ozyilmaz},
doi = {10.1038/s41563-023-01779-8},
times_cited = {7},
issn = {1476-1122},
year = {2024},
date = {2024-01-12},
journal = {NATURE MATERIALS},
volume = {23},
number = {4},
publisher = {NATURE PORTFOLIO},
address = {HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY},
abstract = {In anisotropic crystals, the direction-dependent effective mass of carriers can have a profound impact on spin transport dynamics. The puckered crystal structure of black phosphorus leads to direction-dependent charge transport and optical response, suggesting that it is an ideal system for studying anisotropic spin transport. To this end, we fabricate and characterize high-mobility encapsulated ultrathin black-phosphorus-based spin valves in a four-terminal geometry. Our measurements show that in-plane spin lifetimes are strongly gate tunable and exceed one nanosecond. Through high out-of-plane magnetic fields, we observe a fivefold enhancement in the out-of-plane spin signal case compared to in-plane and estimate a colossal spin-lifetime anisotropy of similar to 6. This finding is further confirmed by oblique Hanle measurements. Additionally, we estimate an in-plane spin-lifetime anisotropy ratio of up to 1.8. Our observation of strongly anisotropic spin transport along three orthogonal axes in this pristine material could be exploited to realize directionally tunable spin transport.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
In anisotropic crystals, the direction-dependent effective mass of carriers can have a profound impact on spin transport dynamics. The puckered crystal structure of black phosphorus leads to direction-dependent charge transport and optical response, suggesting that it is an ideal system for studying anisotropic spin transport. To this end, we fabricate and characterize high-mobility encapsulated ultrathin black-phosphorus-based spin valves in a four-terminal geometry. Our measurements show that in-plane spin lifetimes are strongly gate tunable and exceed one nanosecond. Through high out-of-plane magnetic fields, we observe a fivefold enhancement in the out-of-plane spin signal case compared to in-plane and estimate a colossal spin-lifetime anisotropy of similar to 6. This finding is further confirmed by oblique Hanle measurements. Additionally, we estimate an in-plane spin-lifetime anisotropy ratio of up to 1.8. Our observation of strongly anisotropic spin transport along three orthogonal axes in this pristine material could be exploited to realize directionally tunable spin transport. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AUCording, L
Liu, JW
Tan, JY
Watanabe, K
Taniguchi, T
Avsar, A
Özyilmaz, B
- AFLuke Cording
Jiawei Liu
Jun You Tan
Kenji Watanabe
Takashi Taniguchi
Ahmet Avsar
Barbaros Ozyilmaz
- TIHighly anisotropic spin transport in ultrathin black phosphorus
- SONATURE MATERIALS
- LAEnglish
- DTArticle
- ABIn anisotropic crystals, the direction-dependent effective mass of carriers can have a profound impact on spin transport dynamics. The puckered crystal structure of black phosphorus leads to direction-dependent charge transport and optical response, suggesting that it is an ideal system for studying anisotropic spin transport. To this end, we fabricate and characterize high-mobility encapsulated ultrathin black-phosphorus-based spin valves in a four-terminal geometry. Our measurements show that in-plane spin lifetimes are strongly gate tunable and exceed one nanosecond. Through high out-of-plane magnetic fields, we observe a fivefold enhancement in the out-of-plane spin signal case compared to in-plane and estimate a colossal spin-lifetime anisotropy of similar to 6. This finding is further confirmed by oblique Hanle measurements. Additionally, we estimate an in-plane spin-lifetime anisotropy ratio of up to 1.8. Our observation of strongly anisotropic spin transport along three orthogonal axes in this pristine material could be exploited to realize directionally tunable spin transport.
- C1[Cording, Luke; Avsar, Ahmet] Newcastle Univ, Sch Math Stat & Phys, Newcastle Upon Tyne, England.
[Liu, Jiawei; Tan, Jun You; Avsar, Ahmet; Ozyilmaz, Barbaros] Natl Univ Singapore, Ctr Adv 2D Mat, Singapore, Singapore. [Watanabe, Kenji] Natl Inst Mat Sci, Res Ctr Funct Mat, Tsukuba, Japan. [Taniguchi, Takashi] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Japan. [Avsar, Ahmet; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Phys, Singapore, Singapore. [Avsar, Ahmet; Ozyilmaz, Barbaros] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore. [Ozyilmaz, Barbaros] Natl Univ Singapore, Inst Funct Intelligent Mat, Singapore, Singapore - C3Newcastle University - UK; National University of Singapore; National Institute for Materials Science; National Institute for Materials Science; National University of Singapore; National University of Singapore; Institute for Functional Intelligent Materials (I-FIM); National University of Singapore
- RPAvsar, A (corresponding author), Newcastle Univ, Sch Math Stat & Phys, Newcastle Upon Tyne, England; Avsar, A (corresponding author), Natl Univ Singapore, Ctr Adv 2D Mat, Singapore, Singapore; Avsar, A (corresponding author), Natl Univ Singapore, Dept Phys, Singapore, Singapore; Avsar, A (corresponding author), Natl Univ Singapore, Dept Mat Sci & Engn, Singapore, Singapore; Özyilmaz, B (corresponding author), Natl Univ Singapore, Inst Funct Intelligent Mat, Singapore, Singapore
- FUNational Research Foundation, Prime Minister's Office, Singapore [NRFF14-2022-0083, NRF-CRP22-2019-8]; National Research Foundation Investigatorship [NRF-NRFI2018-08]; MOE-AcRF-Tier 2 [MOE-T2EP50220-0017]; Ministry of Education, Singapore [EDUNC-33-18-279-V12]; Medium-Sized Centre Programme [21H05233, 23H02052]; Elemental Strategy Initiative; JSPS KAKENHI
- FXWe acknowledge helpful discussions with J. Fabian and A. Ciarrocchi. A.A. acknowledges support by the National Research Foundation, Prime Minister's Office, Singapore (NRFF14-2022-0083). B.OE. acknowledges support by the National Research Foundation, Prime Minister's Office, Singapore, under its Competitive Research Program (CRP award no. NRF-CRP22-2019-8), National Research Foundation Investigatorship (NRFI award no. NRF-NRFI2018-08), MOE-AcRF-Tier 2 (grant no. MOE-T2EP50220-0017), Ministry of Education, Singapore, under its Research Centre of Excellence award to the Institute for Functional Intelligent Materials (Project No. EDUNC-33-18-279-V12) and the Medium-Sized Centre Programme. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative conducted by the MEXT, Japan, and the JSPS KAKENHI (grant nos 21H05233 and 23H02052).
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