Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors
Document identifier: oai:DiVA.org:ltu-75947
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10.1016/j.jpowsour.2019.227066Keyword: Natural Sciences,
Physical Sciences,
Other Physics Topics,
Naturvetenskap,
Fysik,
Annan fysik,
Electro-etching,
Porous carbon foam,
Binder-free electrode,
High-voltage supercapacitor,
Experimentell fysik,
Experimental PhysicsPublication year: 2019Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: Carbon anodes have been widely utilized for the fabrication of high-performance asymmetric supercapacitors. However, they generally suffer from unsatisfactory energy density due to low specific capacitance arising from inferior conductivity and insufficient ionic diffusion rate. Here a surface modification method is conducted after the annealing of ZIF-67 precursor to produce hydrophilic, porous and heteroatom-doped carbon foam. On top of enhanced area capacitance, widened voltage window of −1.3–0 V (vs saturated calomel electrode) can be achieved through electrochemical reduction to suppress the hydrogen evolution reaction. The optimized reduced porous carbon foam on carbon cloth exhibits a maximum area capacitance of 1049 mF/cm2 at an applied current density of 12 mA/cm2 with excellent capacitance retention of 98.4% after 6000 charge-discharge cycles at 15 mA/cm2. By well pairing with hierarchical MnO2/CC cathode, a 2.3 V asymmetric supercapacitor in neutral aqueous Na2SO4 electrolyte is assembled, which delivers an exceptional energy density of up to 10.07 mWh/cm3. The procedure in this paper for carbonaceous material to simultaneously achieve considerable capacitance and enlarged voltage window can open up a wider prospect toward design of anodes for high-performance aqueous supercapacitor.
Authors
Jie Zhang
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
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Wenli Li
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
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Tofik Ahmed Shifa
Luleå tekniska universitet; Materialvetenskap
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Jiangbo Sun
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
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Chuqiao Jia
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
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Yumin Zhao
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
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Yanbin Cui
State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
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identifier: oai:DiVA.org:ltu-75947
datestamp: 2021-04-19T12:36:22Z
setSpec: SwePub-ltu
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recordContentSource: ltu
recordCreationDate: 2019-09-10
identifier:
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75947
10.1016/j.jpowsour.2019.227066
2-s2.0-85071726562
titleInfo:
@attributes:
lang: eng
title: Hierarchical porous carbon foam supported on carbon cloth as high-performance anodes for aqueous supercapacitors
abstract: Carbon anodes have been widely utilized for the fabrication of high-performance asymmetric supercapacitors. However they generally suffer from unsatisfactory energy density due to low specific capacitance arising from inferior conductivity and insufficient ionic diffusion rate. Here a surface modification method is conducted after the annealing of ZIF-67 precursor to produce hydrophilic porous and heteroatom-doped carbon foam. On top of enhanced area capacitance widened voltage window of −1.3–0 V (vs saturated calomel electrode) can be achieved through electrochemical reduction to suppress the hydrogen evolution reaction. The optimized reduced porous carbon foam on carbon cloth exhibits a maximum area capacitance of 1049 mF/cm2 at an applied current density of 12 mA/cm2 with excellent capacitance retention of 98.4% after 6000 charge-discharge cycles at 15 mA/cm2. By well pairing with hierarchical MnO2/CC cathode a 2.3 V asymmetric supercapacitor in neutral aqueous Na2SO4 electrolyte is assembled which delivers an exceptional energy density of up to 10.07 mWh/cm3. The procedure in this paper for carbonaceous material to simultaneously achieve considerable capacitance and enlarged voltage window can open up a wider prospect toward design of anodes for high-performance aqueous supercapacitor.
subject:
@attributes:
lang: eng
authority: uka.se
topic:
Natural Sciences
Physical Sciences
Other Physics Topics
@attributes:
lang: swe
authority: uka.se
topic:
Naturvetenskap
Fysik
Annan fysik
@attributes:
lang: eng
topic: Electro-etching
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lang: eng
topic: Porous carbon foam
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lang: eng
topic: Binder-free electrode
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lang: eng
topic: High-voltage supercapacitor
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lang: swe
authority: ltu
topic: Experimentell fysik
genre: Research subject
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lang: eng
authority: ltu
topic: Experimental Physics
genre: Research subject
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publication/journal-article
ref
note:
Published
7
Validerad;2019;Nivå 2;2019-11-22 (johcin)
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Zhang
Jie
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
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Li
Wenli
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
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Shifa
Tofik Ahmed
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Luleå tekniska universitet
Materialvetenskap
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Sun
Jiangbo
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China
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Jia
Chuqiao
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China
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Zhao
Yumin
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China
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Cui
Yanbin
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affiliation: State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing China
originInfo:
dateIssued: 2019
publisher: Elsevier
relatedItem:
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type: host
titleInfo:
title: Journal of Power Sources
identifier:
0378-7753
1873-2755
part:
detail:
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type: volume
number: 439
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type: artNo
number: 227066
physicalDescription:
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