Nafion-sulfonated organosilica composite membrane for all vanadium redoxflow battery

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	Nafion-sulfonated organosilica composite membrane for all vanadium redoxflow battery
	Teng, Xiangguo; Lei, Jie; Gu, Xuecai; Dai, Jicui; Zhu, Yongming; Li, Faqiang
	2012
发表期刊	IONICS
ISSN	0947-7047
卷号	18 期号:5 页码:513-521
关键词	Vanadium Redox Flow Battery Sulfonated Organosilica Composite Membrane
摘要	A novel Nafion-sulfonated diphenyldimethoxysilane (N-sDDS) composite membrane is prepared and employed in vanadium redox flow battery (VRB). Ion exchange capacity, proton conductivity, water transport behavior, and the cell performances are characterized. Fourier transform-infrared and X-ray diffraction analysis indicate that the sulfonated diphenyldimethoxysilane (sDDS) particles are successfully introduced into the Nafion matrix. In VRB single cell test, the VRB with N-sDDS membrane exhibits nearly the same coulombic efficiency as the unmodified Nafion membrane, but higher voltage efficiency than that of the VRB with unmodified Nafion membrane. The VRB with N-sDDS composite membrane keeps a stable performance after 60 times charge-discharge test. In the self-discharge test, the VRB with the N-sDDS membrane presented a lower self-discharge rate than that of the VRB with Nafion membrane. All results show that the addition of s-DDS is a simple and efficient way to improve the conductivity of Nafion, and the composite membrane shows good potential use for VRB. A novel Nafion-sulfonated diphenyldimethoxysilane (N-sDDS) composite membrane is prepared and employed in vanadium redox flow battery (VRB). Ion exchange capacity, proton conductivity, water transport behavior, and the cell performances are characterized. Fourier transform-infrared and X-ray diffraction analysis indicate that the sulfonated diphenyldimethoxysilane (sDDS) particles are successfully introduced into the Nafion matrix. In VRB single cell test, the VRB with N-sDDS membrane exhibits nearly the same coulombic efficiency as the unmodified Nafion membrane, but higher voltage efficiency than that of the VRB with unmodified Nafion membrane. The VRB with N-sDDS composite membrane keeps a stable performance after 60 times charge-discharge test. In the self-discharge test, the VRB with the N-sDDS membrane presented a lower self-discharge rate than that of the VRB with Nafion membrane. All results show that the addition of s-DDS is a simple and efficient way to improve the conductivity of Nafion, and the composite membrane shows good potential use for VRB.
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/2057
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
推荐引用方式 GB/T 7714	Teng, Xiangguo,Lei, Jie,Gu, Xuecai,et al. Nafion-sulfonated organosilica composite membrane for all vanadium redoxflow battery[J]. IONICS,2012,18(5):513-521.
APA	Teng, Xiangguo,Lei, Jie,Gu, Xuecai,Dai, Jicui,Zhu, Yongming,&Li, Faqiang.(2012).Nafion-sulfonated organosilica composite membrane for all vanadium redoxflow battery.IONICS,18(5),513-521.
MLA	Teng, Xiangguo,et al."Nafion-sulfonated organosilica composite membrane for all vanadium redoxflow battery".IONICS 18.5(2012):513-521.

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