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Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (6): 471-476. Previous Articles     Next Articles

Original Articles

全钒氧化还原液流电池用Nafion/有机硅复合膜

滕祥国a 赵永涛a,b 席靖宇a 武增华a 邱新平*,a,b 陈立泉a,c

  

  1. (a清华大学深圳研究生院 绿色化学电源实验室 深圳 518055)
    (b清华大学化学系 有机光电子与分子工程重点实验室 北京 100084)
    (c中国科学院物理研究所 固体离子学实验室 北京 100080)

  • 投稿日期:2008-08-11 修回日期:2008-10-29 发布日期:2009-03-28
  • 通讯作者: 邱新平

Nafion/Organic Silica Hybrid Membrane for Vanadium Redox Flow Battery

Teng, Xiangguo a Zhao, Yongtao a,b Xi, Jingyu a Wu, Zenghua a
Qiu, Xinping *,a,b Chen, Liquan a,c
  

  1. (a Laboratory of Advanced Power Sources, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055)
    (b Key Laboratory of Organic Optoelectronics and Molecules, Tsinghua University, Beijing 100084)
    (c Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080)
  • Received:2008-08-11 Revised:2008-10-29 Published:2009-03-28
  • Contact: Qiu, Xinping

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Nafion/organic silica hybrid membrane was prepared via an in situ sol-gel reaction method and the ion exchange capacity (IEC), conductivity and water transport rate of the hybrid membrane were measured. Results indicate that compared with Nafion membrane, the hybrid membrane can efficiently block water transfer across the membrane. The average coulombic efficiency and energy efficiency of the VRB with the Nafion/organic silica membrane were all remarkably increased. Furthermore, the Nafion/organic silica hybrid membrane is very stable for more than 80 charge-discharge cycles at current density of 60 mA•cm−2. Results show that the Nafion/organic silica membrane is a novel hybrid membrane and applicable to VRB.

Key words: vanadium redox flow battery, Nafion, organic silica hybrid membrane