QQ客服 官方微博 反馈留言

	Nafion/organic silica modified TiO2 composite membrane for vanadium redox flow battery via in situ sol-gel reactions
	Teng, Xiangguo ; Zhao, Yongtao ; Xi, Jingyu ; Wu, Zenghua ; Qiu, Xinping ; Chen, Liquan
	2010-10-12 ; 2010-10-12
关键词	Vanadium redox flow battery Organic silica TiO2 Composite membrane Sol-gel reaction PERFLUOROSULFONIC ACID IONOMER ELECTROLYTE FUEL-CELLS MICROSTRUCTURAL EVOLUTION EXCHANGE MEMBRANES NAFION MEMBRANE ENERGY-STORAGE OXIDE PHASE TEMPERATURE ORMOSIL HYBRIDS Engineering, Chemical Polymer Science
中文摘要	To improve the selectivity of Nafion membrane, reduce the crossover of vanadium ions and decrease water transfer across the membranes used in VRB systems, the sol-gel method was employed to obtain a composite membrane of Nafion/organic silica modified TiO2 (Nafion/Si/Ti hybrid membrane). The preparation technique and characteristics of the composite membrane were described. The water transfer and the permeability of vanadium ions were also measured. Results showed that crossover of vanadium ions and water transfer across the membrane for the composite membrane have a remarkable decrease comparing with the unmodified Nafion membrane. It has been confirmed by EDX and FT-IR analysis of the modified membrane that the Si and Ti elements distributed uniformly in the prepared membrane. As a result, the coulombic efficiency of the VRB single cell with modified Nafion membrane was higher than that of the VRB single cell with pristine Nafion membrane. The ion exchange capacity (IEC), the area resistance and the water uptake of the composite membrane were also evaluated. Furthermore, the open circuit voltage (OCV) of the VRB with modified and unmodified Nafion membrane has been carried out and cycle performance of the VRB with modified membrane proves that it has high stability in strong acid condition. (C) 2009 Elsevier B.V. All rights reserved.
语种	英语 ; 英语
出版者	ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/81729]
专题	清华大学
推荐引用方式 GB/T 7714	Teng, Xiangguo,Zhao, Yongtao,Xi, Jingyu,et al. Nafion/organic silica modified TiO2 composite membrane for vanadium redox flow battery via in situ sol-gel reactions[J],2010, 2010.
APA	Teng, Xiangguo,Zhao, Yongtao,Xi, Jingyu,Wu, Zenghua,Qiu, Xinping,&Chen, Liquan.(2010).Nafion/organic silica modified TiO2 composite membrane for vanadium redox flow battery via in situ sol-gel reactions..
MLA	Teng, Xiangguo,et al."Nafion/organic silica modified TiO2 composite membrane for vanadium redox flow battery via in situ sol-gel reactions".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。