Preparation of a porous graphite felt electrode for advance vanadium redox flow batteries

Lei Zhang; Junpei Yue; Qi Deng; Wei Ling; Chun Jiao Zhou; Xian Xiang Zeng; Congshan Zhou; Xiong Wei Wu; Yu Ping Wu

doi:10.1039/d0ra00666a

Preparation of a porous graphite felt electrode for advance vanadium redox flow batteries

Lei Zhang, Junpei Yue, Qi Deng, Wei Ling, Chun Jiao Zhou, Xian Xiang Zeng, Congshan Zhou, Xiong Wei Wu, Yu Ping Wu

School of energy science and engineering

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Rapid mass transfer and great electrochemical activity have become the critical points for designing electrodes in vanadium redox flow batteries (VRFBs). In this research, we show a porous graphite felt (GF@P) electrode to improve the electrochemical properties of VRFBs. The generation of pores on graphite felt electrodes is based on etching effects of iron to carbon. The voltage and energy efficiencies of VRFB based on the GF@P electrode can reach 72.6% and 70.7% at a current density of 200 mA cm^-2, respectively, which are 8.3% and 7.9% better than that of untreated GF@U (graphite felt). Further, the VRFBs based on GF@P electrodes possess supreme stability after over 500 charge-discharge cycles at 200 mA cm^-2. The high-efficiency approach reported in this study offers a new strategy for designing high-performance electrode materials applied in VRFBs.

Original language	English
Pages (from-to)	13374-13378
Number of pages	5
Journal	RSC Advances
Volume	10
Issue number	23
DOIs	https://doi.org/10.1039/d0ra00666a
State	Published - 1 Apr 2020

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10.1039/d0ra00666a

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title = "Preparation of a porous graphite felt electrode for advance vanadium redox flow batteries",

abstract = "Rapid mass transfer and great electrochemical activity have become the critical points for designing electrodes in vanadium redox flow batteries (VRFBs). In this research, we show a porous graphite felt (GF@P) electrode to improve the electrochemical properties of VRFBs. The generation of pores on graphite felt electrodes is based on etching effects of iron to carbon. The voltage and energy efficiencies of VRFB based on the GF@P electrode can reach 72.6% and 70.7% at a current density of 200 mA cm-2, respectively, which are 8.3% and 7.9% better than that of untreated GF@U (graphite felt). Further, the VRFBs based on GF@P electrodes possess supreme stability after over 500 charge-discharge cycles at 200 mA cm-2. The high-efficiency approach reported in this study offers a new strategy for designing high-performance electrode materials applied in VRFBs.",

author = "Lei Zhang and Junpei Yue and Qi Deng and Wei Ling and Zhou, {Chun Jiao} and Zeng, {Xian Xiang} and Congshan Zhou and Wu, {Xiong Wei} and Wu, {Yu Ping}",

note = "Publisher Copyright: This journal is {\textcopyright} The Royal Society of Chemistry.",

year = "2020",

month = apr,

day = "1",

doi = "10.1039/d0ra00666a",

language = "英语",

volume = "10",

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TY - JOUR

T1 - Preparation of a porous graphite felt electrode for advance vanadium redox flow batteries

AU - Zhang, Lei

AU - Yue, Junpei

AU - Deng, Qi

AU - Ling, Wei

AU - Zhou, Chun Jiao

AU - Zeng, Xian Xiang

AU - Zhou, Congshan

AU - Wu, Xiong Wei

AU - Wu, Yu Ping

PY - 2020/4/1

Y1 - 2020/4/1

N2 - Rapid mass transfer and great electrochemical activity have become the critical points for designing electrodes in vanadium redox flow batteries (VRFBs). In this research, we show a porous graphite felt (GF@P) electrode to improve the electrochemical properties of VRFBs. The generation of pores on graphite felt electrodes is based on etching effects of iron to carbon. The voltage and energy efficiencies of VRFB based on the GF@P electrode can reach 72.6% and 70.7% at a current density of 200 mA cm-2, respectively, which are 8.3% and 7.9% better than that of untreated GF@U (graphite felt). Further, the VRFBs based on GF@P electrodes possess supreme stability after over 500 charge-discharge cycles at 200 mA cm-2. The high-efficiency approach reported in this study offers a new strategy for designing high-performance electrode materials applied in VRFBs.

AB - Rapid mass transfer and great electrochemical activity have become the critical points for designing electrodes in vanadium redox flow batteries (VRFBs). In this research, we show a porous graphite felt (GF@P) electrode to improve the electrochemical properties of VRFBs. The generation of pores on graphite felt electrodes is based on etching effects of iron to carbon. The voltage and energy efficiencies of VRFB based on the GF@P electrode can reach 72.6% and 70.7% at a current density of 200 mA cm-2, respectively, which are 8.3% and 7.9% better than that of untreated GF@U (graphite felt). Further, the VRFBs based on GF@P electrodes possess supreme stability after over 500 charge-discharge cycles at 200 mA cm-2. The high-efficiency approach reported in this study offers a new strategy for designing high-performance electrode materials applied in VRFBs.

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U2 - 10.1039/d0ra00666a

DO - 10.1039/d0ra00666a

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VL - 10

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EP - 13378

JO - RSC Advances

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ER -

Preparation of a porous graphite felt electrode for advance vanadium redox flow batteries

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