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An advanced integrated electrode with micron- and nano-scale structures for vanadium redox flow battery
Xu, Zeyu; Xiao, Wei; Zhang, Kaiyue; Zhang, Denghua; Wei, Hao; Zhang, Xihao; Zhang, Zhongyu; Pu, Nianwen; Liu, Jianguo; Yan, Chuanwei
2020-02-29
Source PublicationJOURNAL OF POWER SOURCES
Volume450
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.
DOI10.1016/j.jpowsour.2019.227686
WOS IDWOS:000517663800056
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83103
Collection中国科学院金属研究所
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.
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.
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).
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