An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries

doi:10.1016/j.jpowsour.2022.232241

IMR OpenIR

	An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries
	Zhang, Yifan 1,2; Zhang, Xihao 1,2; Xu, Zeyu 1; Zhang, Denghua 1,2; Yu, Wenjie 3; Zhang, Yue 1,2; Liu, Lansong 1,2; Liu, Jianguo 1; Yan, Chuanwei 1
通讯作者	Liu, Jianguo(jgliu@imr.ac.cn)
	2022-12-30
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	552 页码:9
摘要	Electrospinning technology has been extensively used to prepare electrodes for vanadium redox flow batteries (VRFBs). Nevertheless, electrospinning carbon nanofibers (ECNFs) electrodes suffer from low porosity and poor permeability, hence significantly hindering mass transport. To solve this critical issue, a new approach to prepare porous channel electrodes with large porosity based on electrospinning technology is proposed. The electrode is fabricated by electrospinning of polyacrylonitrile and poly (methyl methacrylate) (PMMA) solutions. PMMA not only acts as a sacrificial phase to form a porous channel structure inside the fibers, but also interconnects the fibers, which significantly increases the inter-fiber pore space and enhances the mass transfer performance. Electrochemical characterizations indicate that the electrodes have a remarkably elevated electrochemical specific surface area and outstanding electrochemical performance. Owing to the well-designed large-porosity porous channel structure of the electrode, the energy efficiency of the VRFB equipped with this electrode is 74.45% at 300 mA cm-2 and 81.03% at 200 mA cm-2, and the battery can be continuously charged and dis-charged for more than 1200 cycles, which demonstrates a long-term cycling stability of the electrode. All of these indicate that this efficient and durable method for propagating electrode has broad application prospects.
关键词	Electrospinning Porous electrodes Mass transport Vanadium redox flow battery
资助者	National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province
DOI	10.1016/j.jpowsour.2022.232241
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; Central Guidance on Local Science and Technology Development Fund of Liaoning Province ; [21975267] ; [2022JH6/100100001]
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000882475800002
出版者	ELSEVIER
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176726
专题	中国科学院金属研究所
通讯作者	Liu, Jianguo
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China 3.Liaoning Univ, Coll Chem, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yifan,Zhang, Xihao,Xu, Zeyu,et al. An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries[J]. JOURNAL OF POWER SOURCES,2022,552:9.
APA	Zhang, Yifan.,Zhang, Xihao.,Xu, Zeyu.,Zhang, Denghua.,Yu, Wenjie.,...&Yan, Chuanwei.(2022).An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries.JOURNAL OF POWER SOURCES,552,9.
MLA	Zhang, Yifan,et al."An advanced large-porosity porous channel structure electrode for vanadium redox flow batteries".JOURNAL OF POWER SOURCES 552(2022):9.