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An advanced integrated electrode with micron- and nano-scale structures for vanadium redox flow battery
Xu, Zeyu1,2; Xiao, Wei1; Zhang, Kaiyue1,2; Zhang, Denghua1,2; Wei, Hao1; Zhang, Xihao1,2; Zhang, Zhongyu1,3; Pu, Nianwen1,3; Liu, Jianguo1; Yan, Chuanwei1
Corresponding AuthorLiu, Jianguo(jgliu@imr.ac.cn)
2020-02-29
Source PublicationJOURNAL OF POWER SOURCES
ISSN0378-7753
Volume450Pages:10
AbstractImproving battery performance and cycle life is an effective way to increase the share of vanadium redox flow batteries (VRFBs) in the energy storage market. Here, an advanced integrated electrode with micron- and nanoscale structures is fabricated through multi-step electrospinning and post-functionalization processes. For micron-scale structure, the reaction region and the electron transport region are constructed to optimize activation areas and electron conduction process. For nano-scale structure, the catalytic layer with oxygen-rich gradient nanopores and the conductive layer with electron transport channels are generated to enhance electrocatalytic and conductive performances without sacrificing mass transport. The VRFB with the as-prepared electrodes achieves an outstanding performance with 80.28% energy efficiency at 250 mA cm(-2) and is stably cycled for more than 1000 cycles. Besides, it delivers a high peak power density of 702.98 mW cm(-2), which is 69.45% higher than that of the battery with conventional graphite felts. More importantly, the rationality of structure design is verified, and different application ways of the as-prepared electrodes are compared. This work provides an inspiration in structural design for the development of high performance electrodes for VRFBs.
KeywordVanadium redox flow battery Multi-scale integrated structures Polarization Electrocatalytic activity Conductivity Hydrophilicity
Funding OrganizationNational Natural Science Foundation of China ; Shenyang Key R&D and Technology Transfer Program ; Natural Science Foundation of Liaoning ; Shenyang Science and Technology Project
DOI10.1016/j.jpowsour.2019.227686
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[21573257] ; National Natural Science Foundation of China[21676282] ; Shenyang Key R&D and Technology Transfer Program[Z17-7-026] ; Natural Science Foundation of Liaoning[20180510039] ; Shenyang Science and Technology Project[18013051]
WOS Research AreaChemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS SubjectChemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS IDWOS:000517663800056
PublisherELSEVIER
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/137453
Collection中国科学院金属研究所
Corresponding AuthorLiu, Jianguo
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
3.Sichuan Xingming Energy & Environm Protect Techno, Chengdu 610106, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Xu, Zeyu,Xiao, Wei,Zhang, Kaiyue,et al. An advanced integrated electrode with micron- and nano-scale structures for vanadium redox flow battery[J]. JOURNAL OF POWER SOURCES,2020,450:10.
APA Xu, Zeyu.,Xiao, Wei.,Zhang, Kaiyue.,Zhang, Denghua.,Wei, Hao.,...&Yan, Chuanwei.(2020).An advanced integrated electrode with micron- and nano-scale structures for vanadium redox flow battery.JOURNAL OF POWER SOURCES,450,10.
MLA Xu, Zeyu,et al."An advanced integrated electrode with micron- and nano-scale structures for vanadium redox flow battery".JOURNAL OF POWER SOURCES 450(2020):10.
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