High electro-catalytic graphite felt/MnO2 composite electrodes for vanadium redox flow batteries

doi:10.1007/s11426-017-9235-6

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	High electro-catalytic graphite felt/MnO2 composite electrodes for vanadium redox flow batteries
	Ma, Qiang 1,2,3; Deng, Qi 1,4; Sheng, Hang 1,2,3; Ling, Wei 1,2,3; Wang, Hong-Rui 1; Jiao, Hai-Wen 1; Wu, Xiong-Wei 1,4; Zhou, Wen-Xin 1; Zeng, Xian-Xiang 1; Yin, Ya-Xia 2,3
刊名	SCIENCE CHINA-CHEMISTRY
	2018-06-01
卷号	61 期号:6 页码:732-738
关键词	Vrfb One-step Hydrothermal Graphite Felt Manganese Dioxide Composite Electrode
ISSN号	1674-7291
DOI	10.1007/s11426-017-9235-6
英文摘要	A mild and simple synthesis process for large-scale vanadium redox flow batteries (VRFBs) energy storage systems is desirable. A graphite felt/MnO2 (GF-MNO) composite electrode with excellent electrocatalytic activity towards VO2+/VO2 (+) redox couples in a VRFB was synthesized by a one-step hydrothermal process. The resulting GF-MNO electrodes possess improved electrochemical kinetic reversibility of the vanadium redox reactions compared to pristine GF electrodes, and the corresponding energy efficiency and discharge capacity at 150 mA cm(-2) are increased by 12.5% and 40%, respectively. The discharge capacity is maintained at 4.8 A h L-1 at the ultrahigh current density of 250 mA cm(-2). Above all, 80% of the energy efficiency of the GFMNO composite electrodes is retained after 120 charge-discharge cycles at 150 mA cm(-2). Furthermore, these electrodes demonstrated that more evenly distributed catalytic active sites were obtained from the MnO2 particles under acidic conditions. The proposed synthetic route is facile, and the raw materials are low cost and environmentally friendly. Therefore, these novel GFMNO electrodes hold great promise in large-scale vanadium redox flow battery energy storage systems.
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000434719100017
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42765]
专题	中国科学院化学研究所
通讯作者	Wu, Xiong-Wei; Zhou, Wen-Xin; Guo, Yu-
作者单位	1.Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China 2.Chinese Acad Sci, Inst Chem, Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 4.Hunan Prov Yin Feng New Energy Co LTD, Changsha 410000, Hunan, Peoples R China
推荐引用方式 GB/T 7714	Ma, Qiang,Deng, Qi,Sheng, Hang,et al. High electro-catalytic graphite felt/MnO2 composite electrodes for vanadium redox flow batteries[J]. SCIENCE CHINA-CHEMISTRY,2018,61(6):732-738.
APA	Ma, Qiang.,Deng, Qi.,Sheng, Hang.,Ling, Wei.,Wang, Hong-Rui.,...&Guo, Yu-.(2018).High electro-catalytic graphite felt/MnO2 composite electrodes for vanadium redox flow batteries.SCIENCE CHINA-CHEMISTRY,61(6),732-738.
MLA	Ma, Qiang,et al."High electro-catalytic graphite felt/MnO2 composite electrodes for vanadium redox flow batteries".SCIENCE CHINA-CHEMISTRY 61.6(2018):732-738.