2026
|
Ng, Pei Rou; Zhang, Yixin; Min, Tania Jim Jia; Liu, Xuan; Lin, Mo; Ivanov, Artemii S; Nikolaev, Konstantin G; Mahfouz, Remi; Tayeb, Talah M; Qari, Nada; Bazan, Guillermo C; Sorokin, Vitaly; Novoselov, Kostya S; Andreeva, Daria V Graphene and amorphous carbon coatings for nitinol cardiovascular stents
by direct chemical vapor deposition: A comparative insight MATERIALS & DESIGN, 265 , 2026, DOI: 10.1016/j.matdes.2026.115864. Abstract | BibTeX | Endnote @article{WOS:001728083400001,
title = {Graphene and amorphous carbon coatings for nitinol cardiovascular stents
by direct chemical vapor deposition: A comparative insight},
author = {Pei Rou Ng and Yixin Zhang and Tania Jim Jia Min and Xuan Liu and Mo Lin and Artemii S Ivanov and Konstantin G Nikolaev and Remi Mahfouz and Talah M Tayeb and Nada Qari and Guillermo C Bazan and Vitaly Sorokin and Kostya S Novoselov and Daria V. Andreeva},
doi = {10.1016/j.matdes.2026.115864},
times_cited = {0},
issn = {0264-1275},
year = {2026},
date = {2026-05-01},
journal = {MATERIALS & DESIGN},
volume = {265},
publisher = {ELSEVIER SCI LTD},
address = {125 London Wall, London, ENGLAND},
abstract = {Carbon-based coatings are promising for biomedical implants, including
vascular stents, but fabrication on metals often requires adhesion
interlayers or polymer-assisted transfer, increasing cost and
complexity. Here, we report a simple, ambient-pressure chemical vapor
deposition (CVD) process for the direct, interlayer-free growth of two
carbon coatings on nitinol (NiTi) stents: few-layer graphene (FLG/NiTi,
170 +/- 20 nm) and amorphous carbon (a-C/NiTi, 620 +/- 30 nm). Both
coatings significantly enhanced corrosion resistance, with protection
efficiencies of 83.78% for FLG/NiTi and 89.19% for a-C/NiTi. Vascular
cell assays revealed distinct and clinically relevant biological
responses. a-C/NiTi promoted vascular endothelial cell (VEC)
proliferation (+17.2% at 96 h relative to bare NiTi) while suppressing
vascular smooth muscle cell (VSMC) proliferation (-25%), a desirable
outcome as excessive VSMC growth drives in-stent restenosis, whereas
endothelialization supports vessel healing. In contrast, FLG/NiTi
inhibited proliferation of both cell types (>50% reduction for VECs).
All samples exhibited excellent hemocompatibility (hemolysis < 0.2%),
and a-C/NiTi reduced platelet surface coverage by 30% compared with
bare NiTi, beneficial for mitigating thrombosis. Inflammatory assessment
further showed a 73% reduction in TNF-alpha secretion on a-C/NiTi in
comparison to bare NiTi. Together, these results demonstrate an
interlayer/ polymer-free route to carbon-coated NiTi stents with tunable
biological performance.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Carbon-based coatings are promising for biomedical implants, including
vascular stents, but fabrication on metals often requires adhesion
interlayers or polymer-assisted transfer, increasing cost and
complexity. Here, we report a simple, ambient-pressure chemical vapor
deposition (CVD) process for the direct, interlayer-free growth of two
carbon coatings on nitinol (NiTi) stents: few-layer graphene (FLG/NiTi,
170 +/- 20 nm) and amorphous carbon (a-C/NiTi, 620 +/- 30 nm). Both
coatings significantly enhanced corrosion resistance, with protection
efficiencies of 83.78% for FLG/NiTi and 89.19% for a-C/NiTi. Vascular
cell assays revealed distinct and clinically relevant biological
responses. a-C/NiTi promoted vascular endothelial cell (VEC)
proliferation (+17.2% at 96 h relative to bare NiTi) while suppressing
vascular smooth muscle cell (VSMC) proliferation (-25%), a desirable
outcome as excessive VSMC growth drives in-stent restenosis, whereas
endothelialization supports vessel healing. In contrast, FLG/NiTi
inhibited proliferation of both cell types (>50% reduction for VECs).
All samples exhibited excellent hemocompatibility (hemolysis < 0.2%),
and a-C/NiTi reduced platelet surface coverage by 30% compared with
bare NiTi, beneficial for mitigating thrombosis. Inflammatory assessment
further showed a 73% reduction in TNF-alpha secretion on a-C/NiTi in
comparison to bare NiTi. Together, these results demonstrate an
interlayer/ polymer-free route to carbon-coated NiTi stents with tunable
biological performance. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFPei Rou Ng
Yixin Zhang
Tania Jim Jia Min
Xuan Liu
Mo Lin
Artemii S Ivanov
Konstantin G Nikolaev
Remi Mahfouz
Talah M Tayeb
Nada Qari
Guillermo C Bazan
Vitaly Sorokin
Kostya S Novoselov
Daria V. Andreeva
- TIGraphene and amorphous carbon coatings for nitinol cardiovascular stents
by direct chemical vapor deposition: A comparative insight - SOMATERIALS & DESIGN
- DTArticle
- ABCarbon-based coatings are promising for biomedical implants, including
vascular stents, but fabrication on metals often requires adhesion
interlayers or polymer-assisted transfer, increasing cost and
complexity. Here, we report a simple, ambient-pressure chemical vapor
deposition (CVD) process for the direct, interlayer-free growth of two
carbon coatings on nitinol (NiTi) stents: few-layer graphene (FLG/NiTi,
170 +/- 20 nm) and amorphous carbon (a-C/NiTi, 620 +/- 30 nm). Both
coatings significantly enhanced corrosion resistance, with protection
efficiencies of 83.78% for FLG/NiTi and 89.19% for a-C/NiTi. Vascular
cell assays revealed distinct and clinically relevant biological
responses. a-C/NiTi promoted vascular endothelial cell (VEC)
proliferation (+17.2% at 96 h relative to bare NiTi) while suppressing
vascular smooth muscle cell (VSMC) proliferation (-25%), a desirable
outcome as excessive VSMC growth drives in-stent restenosis, whereas
endothelialization supports vessel healing. In contrast, FLG/NiTi
inhibited proliferation of both cell types (>50% reduction for VECs).
All samples exhibited excellent hemocompatibility (hemolysis < 0.2%),
and a-C/NiTi reduced platelet surface coverage by 30% compared with
bare NiTi, beneficial for mitigating thrombosis. Inflammatory assessment
further showed a 73% reduction in TNF-alpha secretion on a-C/NiTi in
comparison to bare NiTi. Together, these results demonstrate an
interlayer/ polymer-free route to carbon-coated NiTi stents with tunable
biological performance. - Z90
- PUELSEVIER SCI LTD
- PA125 London Wall, London, ENGLAND
- SN0264-1275
- VL265
- DI10.1016/j.matdes.2026.115864
- UTWOS:001728083400001
- ER
- EF
|
Nikolaev, Konstantin G; Ivanov, Artemii; Wen, Han; Wang, Qian; Kravtsov, Mikhail; Bandurin, Denis A; Karim, Nazmul; Novoselov, Kostya S; Andreeva, Daria V One-Spot Synthesized Crystalline Graphene/PANI for Wearable Ionic
Transistor Textiles SMALL STRUCTURES, 7 (4), 2026, DOI: 10.1002/sstr.202500904. Abstract | BibTeX | Endnote @article{WOS:001751311800005,
title = {One-Spot Synthesized Crystalline Graphene/PANI for Wearable Ionic
Transistor Textiles},
author = {Konstantin G Nikolaev and Artemii Ivanov and Han Wen and Qian Wang and Mikhail Kravtsov and Denis A Bandurin and Nazmul Karim and Kostya S Novoselov and Daria V Andreeva},
doi = {10.1002/sstr.202500904},
times_cited = {0},
year = {2026},
date = {2026-04-01},
journal = {SMALL STRUCTURES},
volume = {7},
number = {4},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {Here, we report a one-spot, temperature-controlled AC
electropolymerization strategy for converting graphene oxide and aniline
into a crystalline, processable reduced graphene oxide (rGO)/polyaniline
(PANI) composite for wearable ionic transistor textiles. By tuning the
electropolymerization temperature from 4 degrees C to 55 degrees C under
a low-frequency triangular AC waveform, followed by mild postreduction,
conformal polycrystalline PANI nanodomains are grown directly on rGO
sheets. Low-temperature synthesis yields the highest structural ordering
and the lowest fraction of protonated imine species, directly linking
growth conditions to mixed ionic-electronic transport behavior. The
resulting rGO/PANI composite functions as an electrolyte-gated
transistor with stable operation and amplified gate response.
Furthermore, the composite can be stencil printed onto cotton textiles
to realize ratiometric Na+/K+ sensing at constant ionic strength,
highlighting its potential for scalable, wearable ion-sensing
architectures.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Here, we report a one-spot, temperature-controlled AC
electropolymerization strategy for converting graphene oxide and aniline
into a crystalline, processable reduced graphene oxide (rGO)/polyaniline
(PANI) composite for wearable ionic transistor textiles. By tuning the
electropolymerization temperature from 4 degrees C to 55 degrees C under
a low-frequency triangular AC waveform, followed by mild postreduction,
conformal polycrystalline PANI nanodomains are grown directly on rGO
sheets. Low-temperature synthesis yields the highest structural ordering
and the lowest fraction of protonated imine species, directly linking
growth conditions to mixed ionic-electronic transport behavior. The
resulting rGO/PANI composite functions as an electrolyte-gated
transistor with stable operation and amplified gate response.
Furthermore, the composite can be stencil printed onto cotton textiles
to realize ratiometric Na+/K+ sensing at constant ionic strength,
highlighting its potential for scalable, wearable ion-sensing
architectures. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFKonstantin G Nikolaev
Artemii Ivanov
Han Wen
Qian Wang
Mikhail Kravtsov
Denis A Bandurin
Nazmul Karim
Kostya S Novoselov
Daria V Andreeva
- TIOne-Spot Synthesized Crystalline Graphene/PANI for Wearable Ionic
Transistor Textiles - SOSMALL STRUCTURES
- DTArticle
- ABHere, we report a one-spot, temperature-controlled AC
electropolymerization strategy for converting graphene oxide and aniline
into a crystalline, processable reduced graphene oxide (rGO)/polyaniline
(PANI) composite for wearable ionic transistor textiles. By tuning the
electropolymerization temperature from 4 degrees C to 55 degrees C under
a low-frequency triangular AC waveform, followed by mild postreduction,
conformal polycrystalline PANI nanodomains are grown directly on rGO
sheets. Low-temperature synthesis yields the highest structural ordering
and the lowest fraction of protonated imine species, directly linking
growth conditions to mixed ionic-electronic transport behavior. The
resulting rGO/PANI composite functions as an electrolyte-gated
transistor with stable operation and amplified gate response.
Furthermore, the composite can be stencil printed onto cotton textiles
to realize ratiometric Na+/K+ sensing at constant ionic strength,
highlighting its potential for scalable, wearable ion-sensing
architectures. - Z90
- PUWILEY-V C H VERLAG GMBH
- PAPOSTFACH 101161, 69451 WEINHEIM, GERMANY
- VL7
- DI10.1002/sstr.202500904
- UTWOS:001751311800005
- ER
- EF
|
Nikolaev, Konstantin G; Bong, Jia Hui; Chen, Siyu; Novoselov, Kostya S; Andreeva, Daria V The Graphene Oxide Memristive DNA Sensor for Taxonomic Fingerprint MACROMOLECULAR MATERIALS AND ENGINEERING, 311 (3), 2026, DOI: 10.1002/mame.202500286. Abstract | BibTeX | Endnote @article{WOS:001632743500001,
title = {The Graphene Oxide Memristive DNA Sensor for Taxonomic Fingerprint},
author = {Konstantin G Nikolaev and Jia Hui Bong and Siyu Chen and Kostya S Novoselov and Daria V Andreeva},
doi = {10.1002/mame.202500286},
times_cited = {1},
issn = {1438-7492},
year = {2026},
date = {2026-03-01},
journal = {MACROMOLECULAR MATERIALS AND ENGINEERING},
volume = {311},
number = {3},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {The selective, rapid, and sensitive detection of deoxyribonucleic acid
(DNA) nucleobases is critical for applications in genetic diagnostics,
forensic analysis, and molecular biology research. Conventional
detection techniques often require sophisticated instrumentation and
complex sample preparation, which limit their use in point-of-care
settings. Advances in 2D nanomaterials, particularly graphene oxide
(GO), have enabled the development of highly sensitive DNA sensors;
however, challenges in achieving selectivity, simplicity, and speed
remain. In this work, we present a simple and cost-effective
transistor-based memristive DNA sensor that exploits the specific
interactions between GO and double-stranded DNA. The platform enables
direct, label-free quantification of DNA sequences across a
guanine-cytosine (GC) content range of 37%-55%, with strong linear calibration (coefficient of determination},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The selective, rapid, and sensitive detection of deoxyribonucleic acid
(DNA) nucleobases is critical for applications in genetic diagnostics,
forensic analysis, and molecular biology research. Conventional
detection techniques often require sophisticated instrumentation and
complex sample preparation, which limit their use in point-of-care
settings. Advances in 2D nanomaterials, particularly graphene oxide
(GO), have enabled the development of highly sensitive DNA sensors;
however, challenges in achieving selectivity, simplicity, and speed
remain. In this work, we present a simple and cost-effective
transistor-based memristive DNA sensor that exploits the specific
interactions between GO and double-stranded DNA. The platform enables
direct, label-free quantification of DNA sequences across a
guanine-cytosine (GC) content range of 37%-55%, with strong linear calibration (coefficient of determination - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFKonstantin G Nikolaev
Jia Hui Bong
Siyu Chen
Kostya S Novoselov
Daria V Andreeva
- TIThe Graphene Oxide Memristive DNA Sensor for Taxonomic Fingerprint
- SOMACROMOLECULAR MATERIALS AND ENGINEERING
- DTArticle
- ABThe selective, rapid, and sensitive detection of deoxyribonucleic acid
(DNA) nucleobases is critical for applications in genetic diagnostics,
forensic analysis, and molecular biology research. Conventional
detection techniques often require sophisticated instrumentation and
complex sample preparation, which limit their use in point-of-care
settings. Advances in 2D nanomaterials, particularly graphene oxide
(GO), have enabled the development of highly sensitive DNA sensors;
however, challenges in achieving selectivity, simplicity, and speed
remain. In this work, we present a simple and cost-effective
transistor-based memristive DNA sensor that exploits the specific
interactions between GO and double-stranded DNA. The platform enables
direct, label-free quantification of DNA sequences across a
guanine-cytosine (GC) content range of 37%-55%, with strong linear calibration (coefficient of determination - Z91
- PUWILEY-V C H VERLAG GMBH
- PAPOSTFACH 101161, 69451 WEINHEIM, GERMANY
- SN1438-7492
- VL311
- DI10.1002/mame.202500286
- UTWOS:001632743500001
- ER
- EF
|
2025
|
Yang, Kou; Wang, Qinyue; Nikolaev, Konstantin G; Wang, Qian; Moskalenko, Ivan V; Zhang, Shanqing; Qiu, Xueqing; Timashev, Eduard O; Skorb, Ekaterina V; Novoselov, Kostya S; Andreeva, Daria V Nanoconfined MXene/Cellulose Membranes for Selective Lithium Extraction
from Brines and Black Mass ACS NANO, 19 (40), pp. 35483-35492, 2025, DOI: 10.1021/acsnano.5c08653. Abstract | BibTeX | Endnote @article{WOS:001586940700001,
title = {Nanoconfined MXene/Cellulose Membranes for Selective Lithium Extraction
from Brines and Black Mass},
author = {Kou Yang and Qinyue Wang and Konstantin G Nikolaev and Qian Wang and Ivan V Moskalenko and Shanqing Zhang and Xueqing Qiu and Eduard O Timashev and Ekaterina V Skorb and Kostya S Novoselov and Daria V Andreeva},
doi = {10.1021/acsnano.5c08653},
times_cited = {3},
issn = {1936-0851},
year = {2025},
date = {2025-10-01},
journal = {ACS NANO},
volume = {19},
number = {40},
pages = {35483-35492},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {A nanoconfined thermoresponsive membrane composed of Ti3C2T x MXene and
hydroxypropyl cellulose (HPC) was developed for selective Li+
extraction. By integrating the electrothermal conductivity of MXenes and
hydration-responsive gating of HPC, the membrane forms heterochannels
with tunable spacing that regulate ion transport through
nanoconfinement-enhanced mechanisms based on interaction energy and
hydration radius. While density functional theory calculations predicted
stronger sorption for Mg2+, experimental data revealed a clear
preference for Li+ uptake from both simulated brine and battery black
mass. This selectivity is attributed to favorable interactions of Li+
within the nanoconfined composite channels, where the subnanometer
interlayer spacings promote partial dehydration and size-sieving
effects. Li+ retention is governed not only by thermodynamic affinity
but also by kinetic acceleration in nanoconfined pathways and
hydration-based steric control. The membrane exhibits a reversible
thermal response and maintains stable performance under Joule heating.
It achieves >90% extraction efficiency from simulated Atacama brine and
up to 98% Li+ recovery from black mass supplied by VGM Sustainability
Solutions (SG3R, Pte. Ltd.).},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
A nanoconfined thermoresponsive membrane composed of Ti3C2T x MXene and
hydroxypropyl cellulose (HPC) was developed for selective Li+
extraction. By integrating the electrothermal conductivity of MXenes and
hydration-responsive gating of HPC, the membrane forms heterochannels
with tunable spacing that regulate ion transport through
nanoconfinement-enhanced mechanisms based on interaction energy and
hydration radius. While density functional theory calculations predicted
stronger sorption for Mg2+, experimental data revealed a clear
preference for Li+ uptake from both simulated brine and battery black
mass. This selectivity is attributed to favorable interactions of Li+
within the nanoconfined composite channels, where the subnanometer
interlayer spacings promote partial dehydration and size-sieving
effects. Li+ retention is governed not only by thermodynamic affinity
but also by kinetic acceleration in nanoconfined pathways and
hydration-based steric control. The membrane exhibits a reversible
thermal response and maintains stable performance under Joule heating.
It achieves >90% extraction efficiency from simulated Atacama brine and
up to 98% Li+ recovery from black mass supplied by VGM Sustainability
Solutions (SG3R, Pte. Ltd.). - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFKou Yang
Qinyue Wang
Konstantin G Nikolaev
Qian Wang
Ivan V Moskalenko
Shanqing Zhang
Xueqing Qiu
Eduard O Timashev
Ekaterina V Skorb
Kostya S Novoselov
Daria V Andreeva
- TINanoconfined MXene/Cellulose Membranes for Selective Lithium Extraction
from Brines and Black Mass - SOACS NANO
- DTArticle
- ABA nanoconfined thermoresponsive membrane composed of Ti3C2T x MXene and
hydroxypropyl cellulose (HPC) was developed for selective Li+
extraction. By integrating the electrothermal conductivity of MXenes and
hydration-responsive gating of HPC, the membrane forms heterochannels
with tunable spacing that regulate ion transport through
nanoconfinement-enhanced mechanisms based on interaction energy and
hydration radius. While density functional theory calculations predicted
stronger sorption for Mg2+, experimental data revealed a clear
preference for Li+ uptake from both simulated brine and battery black
mass. This selectivity is attributed to favorable interactions of Li+
within the nanoconfined composite channels, where the subnanometer
interlayer spacings promote partial dehydration and size-sieving
effects. Li+ retention is governed not only by thermodynamic affinity
but also by kinetic acceleration in nanoconfined pathways and
hydration-based steric control. The membrane exhibits a reversible
thermal response and maintains stable performance under Joule heating.
It achieves >90% extraction efficiency from simulated Atacama brine and
up to 98% Li+ recovery from black mass supplied by VGM Sustainability
Solutions (SG3R, Pte. Ltd.). - Z93
- PUAMER CHEMICAL SOC
- PA1155 16TH ST, NW, WASHINGTON, DC 20036 USA
- SN1936-0851
- VL19
- BP35483
- EP35492
- DI10.1021/acsnano.5c08653
- UTWOS:001586940700001
- ER
- EF
|
Nikolaev, Konstantin G; Wu, Jiqiang; Leng, Xuanye; Vazquez, Ricardo J; Mccuskey, Samantha R; Bazan, Guillermo C; Novoselov, Kostya S; Andreeva, Daria V A single-material strategy: graphene sponge bioanode and cathode for
Shewanella oneidensis MR-1 microbial fuel cells RSC SUSTAINABILITY, 3 (11), pp. 5326-5332, 2025, DOI: 10.1039/d5su00629e. Abstract | BibTeX | Endnote @article{WOS:001582674000001,
title = {A single-material strategy: graphene sponge bioanode and cathode for
Shewanella oneidensis MR-1 microbial fuel cells},
author = {Konstantin G Nikolaev and Jiqiang Wu and Xuanye Leng and Ricardo J Vazquez and Samantha R Mccuskey and Guillermo C Bazan and Kostya S Novoselov and Daria V Andreeva},
doi = {10.1039/d5su00629e},
times_cited = {2},
year = {2025},
date = {2025-10-01},
journal = {RSC SUSTAINABILITY},
volume = {3},
number = {11},
pages = {5326-5332},
publisher = {ROYAL SOC CHEMISTRY},
address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND},
abstract = {Microbial fuel cells (MFCs) enable conversion of organic matter chemical
energy to electricity and provide a great opportunity to upscale green
energy production. However, fabricating MFCs with high power output
demands strong electrode surface modification with metal nanostructures,
for both the anode and cathode. Here, we propose a rational strategy to
use different functionalities of graphene sponge in Shewanella
oneidensis MR-1 MFCs. In such a fuel cell, a graphene sponge functions
as a bioanode and an oxygen reduction reaction (ORR) catalyst. The ORR
activity of the graphene reaches 98 mV dec-1, which is comparable to
that of bare Pt electrodes. The maximum power density is 184 mu W cm-2,
and the current density is 753 mu A cm-2, which is comparable with MFCs
based on a Pt/C cathode (50 mu W cm-2 and 280 mu A cm-2). Furthermore,
the MFC equipped with the free-standing graphene electrodes has a
coulombic efficiency of 70%.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Microbial fuel cells (MFCs) enable conversion of organic matter chemical
energy to electricity and provide a great opportunity to upscale green
energy production. However, fabricating MFCs with high power output
demands strong electrode surface modification with metal nanostructures,
for both the anode and cathode. Here, we propose a rational strategy to
use different functionalities of graphene sponge in Shewanella
oneidensis MR-1 MFCs. In such a fuel cell, a graphene sponge functions
as a bioanode and an oxygen reduction reaction (ORR) catalyst. The ORR
activity of the graphene reaches 98 mV dec-1, which is comparable to
that of bare Pt electrodes. The maximum power density is 184 mu W cm-2,
and the current density is 753 mu A cm-2, which is comparable with MFCs
based on a Pt/C cathode (50 mu W cm-2 and 280 mu A cm-2). Furthermore,
the MFC equipped with the free-standing graphene electrodes has a
coulombic efficiency of 70%. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFKonstantin G Nikolaev
Jiqiang Wu
Xuanye Leng
Ricardo J Vazquez
Samantha R Mccuskey
Guillermo C Bazan
Kostya S Novoselov
Daria V Andreeva
- TIA single-material strategy: graphene sponge bioanode and cathode for
Shewanella oneidensis MR-1 microbial fuel cells - SORSC SUSTAINABILITY
- DTArticle
- ABMicrobial fuel cells (MFCs) enable conversion of organic matter chemical
energy to electricity and provide a great opportunity to upscale green
energy production. However, fabricating MFCs with high power output
demands strong electrode surface modification with metal nanostructures,
for both the anode and cathode. Here, we propose a rational strategy to
use different functionalities of graphene sponge in Shewanella
oneidensis MR-1 MFCs. In such a fuel cell, a graphene sponge functions
as a bioanode and an oxygen reduction reaction (ORR) catalyst. The ORR
activity of the graphene reaches 98 mV dec-1, which is comparable to
that of bare Pt electrodes. The maximum power density is 184 mu W cm-2,
and the current density is 753 mu A cm-2, which is comparable with MFCs
based on a Pt/C cathode (50 mu W cm-2 and 280 mu A cm-2). Furthermore,
the MFC equipped with the free-standing graphene electrodes has a
coulombic efficiency of 70%. - Z92
- PUROYAL SOC CHEMISTRY
- PATHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS,
ENGLAND - VL3
- BP5326
- EP5332
- DI10.1039/d5su00629e
- UTWOS:001582674000001
- ER
- EF
|
