2026
|
Chen, Zhongxin; Song, Yilu; McCuskey, Samantha R; Cai, Jianan; Zhang, Weidong; Zhou, Nansi; Ohayon, David; Lopez-Garcia, Fernando; Berdyugin, Alexey I; Mao, Xianwen; Bazan, Guillermo C Spontaneously N-Doped Conjugated Polyelectrolyte Coatings Accelerate
Electron Uptake in Shewanella Oneidensis ADVANCED MATERIALS, 2026, DOI: 10.1002/adma.202521386. Abstract | BibTeX | Endnote @article{WOS:001666014800001,
title = {Spontaneously N-Doped Conjugated Polyelectrolyte Coatings Accelerate
Electron Uptake in Shewanella Oneidensis},
author = {Zhongxin Chen and Yilu Song and Samantha R McCuskey and Jianan Cai and Weidong Zhang and Nansi Zhou and David Ohayon and Fernando Lopez-Garcia and Alexey I Berdyugin and Xianwen Mao and Guillermo C Bazan},
doi = {10.1002/adma.202521386},
times_cited = {0},
issn = {0935-9648},
year = {2026},
date = {2026-01-01},
journal = {ADVANCED MATERIALS},
publisher = {WILEY-V C H VERLAG GMBH},
address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
abstract = {Bioelectrochemical systems interconvert electrical and chemical energy
using living microorganisms, but their efficiency remains limited by
slow electron exchange across abiotic-biotic interfaces. Herein, a
spontaneous n-doped water-dispersible conjugated polyelectrolyte (CPE),
PNB, is developed. The CPE self-assembles on the surface of Shewanella
oneidensis MR-1 to create biocompatible coatings that accelerate inward
extracellular electron transfer. PNB is obtained via an aldol
condensation reaction and is described by an acceptor-acceptor
pi-conjugated backbone bearing quaternary ammonium side chains. This
molecular architecture enables stable n-doping in aqueous media and a
broad reduction potential window. When integrated as a cathodic
interlayer, PNB-S. oneidensis biohybrids exhibit a 14-fold enhancement
in electron injection and a 4-fold increase in electro-driven succinate
production, compared to unmodified cells. Single-cell electrochemical
mapping confirms faster, more efficient per-cell electron influx. These
findings demonstrate that n-type CPEs can bridge external electrodes
with cellular metabolisms, opening a material-based route to
high-performance bioelectronic and electrosynthetic systems. By enabling
more facile charge transfer between synthetic semiconductors and living
catalysts, this work establishes a soft materials-driven framework for
designing electronically coupled microbial systems with potential to
advance sustainable bioelectronic technologies.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Bioelectrochemical systems interconvert electrical and chemical energy
using living microorganisms, but their efficiency remains limited by
slow electron exchange across abiotic-biotic interfaces. Herein, a
spontaneous n-doped water-dispersible conjugated polyelectrolyte (CPE),
PNB, is developed. The CPE self-assembles on the surface of Shewanella
oneidensis MR-1 to create biocompatible coatings that accelerate inward
extracellular electron transfer. PNB is obtained via an aldol
condensation reaction and is described by an acceptor-acceptor
pi-conjugated backbone bearing quaternary ammonium side chains. This
molecular architecture enables stable n-doping in aqueous media and a
broad reduction potential window. When integrated as a cathodic
interlayer, PNB-S. oneidensis biohybrids exhibit a 14-fold enhancement
in electron injection and a 4-fold increase in electro-driven succinate
production, compared to unmodified cells. Single-cell electrochemical
mapping confirms faster, more efficient per-cell electron influx. These
findings demonstrate that n-type CPEs can bridge external electrodes
with cellular metabolisms, opening a material-based route to
high-performance bioelectronic and electrosynthetic systems. By enabling
more facile charge transfer between synthetic semiconductors and living
catalysts, this work establishes a soft materials-driven framework for
designing electronically coupled microbial systems with potential to
advance sustainable bioelectronic technologies. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFZhongxin Chen
Yilu Song
Samantha R McCuskey
Jianan Cai
Weidong Zhang
Nansi Zhou
David Ohayon
Fernando Lopez-Garcia
Alexey I Berdyugin
Xianwen Mao
Guillermo C Bazan
- TISpontaneously N-Doped Conjugated Polyelectrolyte Coatings Accelerate
Electron Uptake in Shewanella Oneidensis - SOADVANCED MATERIALS
- DTArticle
- ABBioelectrochemical systems interconvert electrical and chemical energy
using living microorganisms, but their efficiency remains limited by
slow electron exchange across abiotic-biotic interfaces. Herein, a
spontaneous n-doped water-dispersible conjugated polyelectrolyte (CPE),
PNB, is developed. The CPE self-assembles on the surface of Shewanella
oneidensis MR-1 to create biocompatible coatings that accelerate inward
extracellular electron transfer. PNB is obtained via an aldol
condensation reaction and is described by an acceptor-acceptor
pi-conjugated backbone bearing quaternary ammonium side chains. This
molecular architecture enables stable n-doping in aqueous media and a
broad reduction potential window. When integrated as a cathodic
interlayer, PNB-S. oneidensis biohybrids exhibit a 14-fold enhancement
in electron injection and a 4-fold increase in electro-driven succinate
production, compared to unmodified cells. Single-cell electrochemical
mapping confirms faster, more efficient per-cell electron influx. These
findings demonstrate that n-type CPEs can bridge external electrodes
with cellular metabolisms, opening a material-based route to
high-performance bioelectronic and electrosynthetic systems. By enabling
more facile charge transfer between synthetic semiconductors and living
catalysts, this work establishes a soft materials-driven framework for
designing electronically coupled microbial systems with potential to
advance sustainable bioelectronic technologies. - Z90
- PUWILEY-V C H VERLAG GMBH
- PAPOSTFACH 101161, 69451 WEINHEIM, GERMANY
- SN0935-9648
- DI10.1002/adma.202521386
- UTWOS:001666014800001
- ER
- EF
|
Yu, Wen; Xia, Shengpeng; Zhang, Miaomiao; Gao, Zhiqiang; Lv, Fengting; Huang, Yiming; Bai, Haotian; Bazan, Guillermo C; Wang, Shu Recent Advances of Conjugated Polymers-Based Biohybrid Systems for the
Synthesis of Value-Added Chemicals CCS CHEMISTRY, 8 (1), 2026, DOI: 10.31635/ccschem.025.202506431. Abstract | BibTeX | Endnote @article{WOS:001611972700001,
title = {Recent Advances of Conjugated Polymers-Based Biohybrid Systems for the
Synthesis of Value-Added Chemicals},
author = {Wen Yu and Shengpeng Xia and Miaomiao Zhang and Zhiqiang Gao and Fengting Lv and Yiming Huang and Haotian Bai and Guillermo C Bazan and Shu Wang},
doi = {10.31635/ccschem.025.202506431},
times_cited = {2},
year = {2026},
date = {2026-01-01},
journal = {CCS CHEMISTRY},
volume = {8},
number = {1},
publisher = {CHINESE CHEMICAL SOC},
address = {C/O DEPT INT AFFAIRS, SECRETARY OF CHEM SOC, PO BOX 2709, BEIJING
100080, PEOPLES R CHINA},
abstract = {Conjugated polymers (CPs) have garnered considerable attention for
biohybrid systems due to their intrinsic biocompatibility, superior
light-harvesting and charge-separation capabilities, and tunable
bioconductivity. This review outlines recent breakthroughs and emerging
paradigms in CP-based biohybrid systems, specifically in the field of
biosynthesis, which harness optical and electrical energy to generate
chemical energy. We begin by surveying photosynthetic biohybrid system
constructs that couple CPs with living microorganisms. In these systems,
CPs generate photoactive electrons as ``light-trapping antennas'' to
drive microbial synthetic pathways. Such platforms empower
microorganisms to valorize CO2, N-2, and other simple substrates into
renewable energy fuels and chemicals by utilizing light energy. Beyond
solar-driven processes, electrosynthesis biohybrids offer an orthogonal
yet equally sustainable strategy by leveraging renewable electricity. In
electro-synthetic biohybrid systems, CPs act as electronic bridges that
interface with electroactive microorganisms, significantly enhancing the
interfacial electron transfer rate at the material-biological interface
and thus boosting the efficiency of electricity-chemical conversion. In
summary, these advances not only expand the functional repertoire of
CP-based biohybrid systems but also inform rational design principles
aimed at realizing scalable, sustainable, and programmable biosynthetic
platforms ideas to promote their industrial synthesis of chemicals
powered by solar and electrical inputs.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Conjugated polymers (CPs) have garnered considerable attention for
biohybrid systems due to their intrinsic biocompatibility, superior
light-harvesting and charge-separation capabilities, and tunable
bioconductivity. This review outlines recent breakthroughs and emerging
paradigms in CP-based biohybrid systems, specifically in the field of
biosynthesis, which harness optical and electrical energy to generate
chemical energy. We begin by surveying photosynthetic biohybrid system
constructs that couple CPs with living microorganisms. In these systems,
CPs generate photoactive electrons as ``light-trapping antennas'' to
drive microbial synthetic pathways. Such platforms empower
microorganisms to valorize CO2, N-2, and other simple substrates into
renewable energy fuels and chemicals by utilizing light energy. Beyond
solar-driven processes, electrosynthesis biohybrids offer an orthogonal
yet equally sustainable strategy by leveraging renewable electricity. In
electro-synthetic biohybrid systems, CPs act as electronic bridges that
interface with electroactive microorganisms, significantly enhancing the
interfacial electron transfer rate at the material-biological interface
and thus boosting the efficiency of electricity-chemical conversion. In
summary, these advances not only expand the functional repertoire of
CP-based biohybrid systems but also inform rational design principles
aimed at realizing scalable, sustainable, and programmable biosynthetic
platforms ideas to promote their industrial synthesis of chemicals
powered by solar and electrical inputs. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFWen Yu
Shengpeng Xia
Miaomiao Zhang
Zhiqiang Gao
Fengting Lv
Yiming Huang
Haotian Bai
Guillermo C Bazan
Shu Wang
- TIRecent Advances of Conjugated Polymers-Based Biohybrid Systems for the
Synthesis of Value-Added Chemicals - SOCCS CHEMISTRY
- DTArticle
- ABConjugated polymers (CPs) have garnered considerable attention for
biohybrid systems due to their intrinsic biocompatibility, superior
light-harvesting and charge-separation capabilities, and tunable
bioconductivity. This review outlines recent breakthroughs and emerging
paradigms in CP-based biohybrid systems, specifically in the field of
biosynthesis, which harness optical and electrical energy to generate
chemical energy. We begin by surveying photosynthetic biohybrid system
constructs that couple CPs with living microorganisms. In these systems,
CPs generate photoactive electrons as ``light-trapping antennas'' to
drive microbial synthetic pathways. Such platforms empower
microorganisms to valorize CO2, N-2, and other simple substrates into
renewable energy fuels and chemicals by utilizing light energy. Beyond
solar-driven processes, electrosynthesis biohybrids offer an orthogonal
yet equally sustainable strategy by leveraging renewable electricity. In
electro-synthetic biohybrid systems, CPs act as electronic bridges that
interface with electroactive microorganisms, significantly enhancing the
interfacial electron transfer rate at the material-biological interface
and thus boosting the efficiency of electricity-chemical conversion. In
summary, these advances not only expand the functional repertoire of
CP-based biohybrid systems but also inform rational design principles
aimed at realizing scalable, sustainable, and programmable biosynthetic
platforms ideas to promote their industrial synthesis of chemicals
powered by solar and electrical inputs. - Z92
- PUCHINESE CHEMICAL SOC
- PAC/O DEPT INT AFFAIRS, SECRETARY OF CHEM SOC, PO BOX 2709, BEIJING
100080, PEOPLES R CHINA - VL8
- DI10.31635/ccschem.025.202506431
- UTWOS:001611972700001
- ER
- EF
|
Lopez-Garcia, Fernando; Freixas, Victor M; Mikhailovsky, Alexander; Bazan, Guillermo C; Tretiak, Sergei Theoretical and Experimental Assessment of the Absorption and Dual
Emission of Benzobisthiadiazole Conjugated Oligoelectrolyte Probes JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 17 (1), pp. 119-126, 2026, DOI: 10.1021/acs.jpclett.5c03378. Abstract | BibTeX | Endnote @article{WOS:001649798600001,
title = {Theoretical and Experimental Assessment of the Absorption and Dual
Emission of Benzobisthiadiazole Conjugated Oligoelectrolyte Probes},
author = {Fernando Lopez-Garcia and Victor M Freixas and Alexander Mikhailovsky and Guillermo C Bazan and Sergei Tretiak},
doi = {10.1021/acs.jpclett.5c03378},
times_cited = {0},
issn = {1948-7185},
year = {2026},
date = {2026-01-01},
journal = {JOURNAL OF PHYSICAL CHEMISTRY LETTERS},
volume = {17},
number = {1},
pages = {119-126},
publisher = {AMER CHEMICAL SOC},
address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
abstract = {The conjugated oligoelectrolyte COE-BBT and its neutral form, BBT-Br,
are probes based on benzobisthiadiazole and thiophene-stilbene units
with near-infrared emissions. Upon photoexcitation, these compounds
exhibit a second emission band, suggesting anti-Kasha character of their
fluorescence. Here, we disclose theoretical evidence in support of the
non-Kasha behavior of BBT probes. We employ time-dependent density
functional theory (TD-DFT) and nonadiabatic molecular dynamics to
simulate and analyze absorption and emission phenomena, providing a
comprehensive understanding of the electronic and structural
excited-state behavior and photophysical properties. In particular, our
results support the presence of two distinct excited states from where
emission is possible.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The conjugated oligoelectrolyte COE-BBT and its neutral form, BBT-Br,
are probes based on benzobisthiadiazole and thiophene-stilbene units
with near-infrared emissions. Upon photoexcitation, these compounds
exhibit a second emission band, suggesting anti-Kasha character of their
fluorescence. Here, we disclose theoretical evidence in support of the
non-Kasha behavior of BBT probes. We employ time-dependent density
functional theory (TD-DFT) and nonadiabatic molecular dynamics to
simulate and analyze absorption and emission phenomena, providing a
comprehensive understanding of the electronic and structural
excited-state behavior and photophysical properties. In particular, our
results support the presence of two distinct excited states from where
emission is possible. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFFernando Lopez-Garcia
Victor M Freixas
Alexander Mikhailovsky
Guillermo C Bazan
Sergei Tretiak
- TITheoretical and Experimental Assessment of the Absorption and Dual
Emission of Benzobisthiadiazole Conjugated Oligoelectrolyte Probes - SOJOURNAL OF PHYSICAL CHEMISTRY LETTERS
- DTArticle
- ABThe conjugated oligoelectrolyte COE-BBT and its neutral form, BBT-Br,
are probes based on benzobisthiadiazole and thiophene-stilbene units
with near-infrared emissions. Upon photoexcitation, these compounds
exhibit a second emission band, suggesting anti-Kasha character of their
fluorescence. Here, we disclose theoretical evidence in support of the
non-Kasha behavior of BBT probes. We employ time-dependent density
functional theory (TD-DFT) and nonadiabatic molecular dynamics to
simulate and analyze absorption and emission phenomena, providing a
comprehensive understanding of the electronic and structural
excited-state behavior and photophysical properties. In particular, our
results support the presence of two distinct excited states from where
emission is possible. - Z90
- PUAMER CHEMICAL SOC
- PA1155 16TH ST, NW, WASHINGTON, DC 20036 USA
- SN1948-7185
- VL17
- BP119
- EP126
- DI10.1021/acs.jpclett.5c03378
- UTWOS:001649798600001
- ER
- EF
|
2025
|
Jiang, Yan; Ohayon, David; Yip, Benjamin Rui Peng; Quek, Glenn; Chen, Zhongxin; Bazan, Guillermo C Conjugated polyelectrolyte-aptamer hybrid for
organic-electrochemical-transistor-based sensing CELL REPORTS PHYSICAL SCIENCE, 6 (12), 2025, DOI: 10.1016/j.xcrp.2025.102965. Abstract | BibTeX | Endnote @article{WOS:001644445400001,
title = {Conjugated polyelectrolyte-aptamer hybrid for
organic-electrochemical-transistor-based sensing},
author = {Yan Jiang and David Ohayon and Benjamin Rui Peng Yip and Glenn Quek and Zhongxin Chen and Guillermo C Bazan},
doi = {10.1016/j.xcrp.2025.102965},
times_cited = {0},
year = {2025},
date = {2025-12-01},
journal = {CELL REPORTS PHYSICAL SCIENCE},
volume = {6},
number = {12},
publisher = {CELL PRESS},
address = {50 HAMPSHIRE ST, FLOOR 5, CAMBRIDGE, MA 02139 USA},
abstract = {Organic mixed ionic-electronic conductors (OMIECs) are promising
materials for bioelectronic applications due to their ability to
simultaneously transport ions and electronic charges. However, achieving
selective recognition without compromising desirable mixed transport
characteristics in a single material remains a challenge. In response,
we report an electron-transporting (n-type) conjugated polyelectrolyte
(CPE) with carboxybetaine-functionali zed side chains, which allow for
the covalent attachment of amino-terminated aptamers to form a
CPE-aptamer hybrid, namely, p(NDI-T-ZI/EG)-aptamer. When employed as the
channel material in organic electrochemical transistors (OECTs), the
resulting p(NDI-T-ZI/EG)-aptamer hybrid can maintain mixed conduction
and amplify the signal of aptamers. Meanwhile, it shows high specificity
in dopamine (DA) recognition across a wide concentration range, from
attomolar to nanomolar range. Mechanistic studies revealed that target
binding induces aptamer contraction, modulating charge density and
channel capacitance. These findings demonstrate the potential of
aptamer-based OECT sensing for next-generation decentralized
bioelectronic diagnostics and personalized healthcare.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Organic mixed ionic-electronic conductors (OMIECs) are promising
materials for bioelectronic applications due to their ability to
simultaneously transport ions and electronic charges. However, achieving
selective recognition without compromising desirable mixed transport
characteristics in a single material remains a challenge. In response,
we report an electron-transporting (n-type) conjugated polyelectrolyte
(CPE) with carboxybetaine-functionali zed side chains, which allow for
the covalent attachment of amino-terminated aptamers to form a
CPE-aptamer hybrid, namely, p(NDI-T-ZI/EG)-aptamer. When employed as the
channel material in organic electrochemical transistors (OECTs), the
resulting p(NDI-T-ZI/EG)-aptamer hybrid can maintain mixed conduction
and amplify the signal of aptamers. Meanwhile, it shows high specificity
in dopamine (DA) recognition across a wide concentration range, from
attomolar to nanomolar range. Mechanistic studies revealed that target
binding induces aptamer contraction, modulating charge density and
channel capacitance. These findings demonstrate the potential of
aptamer-based OECT sensing for next-generation decentralized
bioelectronic diagnostics and personalized healthcare. - FNClarivate Analytics Web of Science
- VR1.0
- PTJ
- AFYan Jiang
David Ohayon
Benjamin Rui Peng Yip
Glenn Quek
Zhongxin Chen
Guillermo C Bazan
- TIConjugated polyelectrolyte-aptamer hybrid for
organic-electrochemical-transistor-based sensing - SOCELL REPORTS PHYSICAL SCIENCE
- DTArticle
- ABOrganic mixed ionic-electronic conductors (OMIECs) are promising
materials for bioelectronic applications due to their ability to
simultaneously transport ions and electronic charges. However, achieving
selective recognition without compromising desirable mixed transport
characteristics in a single material remains a challenge. In response,
we report an electron-transporting (n-type) conjugated polyelectrolyte
(CPE) with carboxybetaine-functionali zed side chains, which allow for
the covalent attachment of amino-terminated aptamers to form a
CPE-aptamer hybrid, namely, p(NDI-T-ZI/EG)-aptamer. When employed as the
channel material in organic electrochemical transistors (OECTs), the
resulting p(NDI-T-ZI/EG)-aptamer hybrid can maintain mixed conduction
and amplify the signal of aptamers. Meanwhile, it shows high specificity
in dopamine (DA) recognition across a wide concentration range, from
attomolar to nanomolar range. Mechanistic studies revealed that target
binding induces aptamer contraction, modulating charge density and
channel capacitance. These findings demonstrate the potential of
aptamer-based OECT sensing for next-generation decentralized
bioelectronic diagnostics and personalized healthcare. - Z90
- PUCELL PRESS
- PA50 HAMPSHIRE ST, FLOOR 5, CAMBRIDGE, MA 02139 USA
- VL6
- DI10.1016/j.xcrp.2025.102965
- UTWOS:001644445400001
- 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
|
