Morphology and Electrochemical Properties of Perfluorosulfonic Acid Ionomers for Vanadium Flow Battery Applications: Effect of Side-Chain Length

	Morphology and Electrochemical Properties of Perfluorosulfonic Acid Ionomers for Vanadium Flow Battery Applications: Effect of Side-Chain Length
	Ding, Cong 1,2; Zhang, Huamin 1; Li, Xianfeng 1; Zhang, Hongzhang 1,2; Yao, Chuan 1,2; Shi, Dingqin 1
刊名	chemsuschem
	2013-07-01
卷号	6 期号:7 页码:1262-1269
关键词	electrochemistry ion channels membranes polymers vanadium
英文摘要	perfluorosulfonic acid ionomers (pfsi) with different side-chain lengths have been investigated with respect to their morphology and electrochemical properties in vanadium flow batteries (vfb). the results indicated that the membrane with the shortest side chains (ssc-m2) displayed small ion clusters and a low degree of hydrophobic-hydrophilic separation, which is favourable to reduce the cross-over of vanadium ions in the vfb. ssc-m2 shows a similar proton conductivity to nafion, which carries longer ionic side chains but with much lower ion permeability. as a result, the vfb assembled with ssc-m2 exhibited a superior coulombic efficiency and a voltage efficiency close to that of nafion115. insitu mass transfer revealed that ssc-m2 had a remarkably low degree of vanadium and water transfer across the membrane, which resulted in lower capacity fading than in the case of nafion115. these results indicate that a membrane with short side chains is an ideal option in the fabrication of high-performance vfbs with low capacity loss.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	conducting polymer membranes ; cation-exchange membranes ; methanol fuel-cells ; x-ray-scattering ; redox battery ; nafion ; diffusion ; transport ; storage ; water
收录类别	SCI
语种	英语
WOS记录号	WOS:000321309600025
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/137596]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Div Energy Storage, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ding, Cong,Zhang, Huamin,Li, Xianfeng,et al. Morphology and Electrochemical Properties of Perfluorosulfonic Acid Ionomers for Vanadium Flow Battery Applications: Effect of Side-Chain Length[J]. chemsuschem,2013,6(7):1262-1269.
APA	Ding, Cong,Zhang, Huamin,Li, Xianfeng,Zhang, Hongzhang,Yao, Chuan,&Shi, Dingqin.(2013).Morphology and Electrochemical Properties of Perfluorosulfonic Acid Ionomers for Vanadium Flow Battery Applications: Effect of Side-Chain Length.chemsuschem,6(7),1262-1269.
MLA	Ding, Cong,et al."Morphology and Electrochemical Properties of Perfluorosulfonic Acid Ionomers for Vanadium Flow Battery Applications: Effect of Side-Chain Length".chemsuschem 6.7(2013):1262-1269.