高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

质子交换膜对钒氧化还原液流电池性能的影响

吕正中1,2, 胡嵩麟1,2, 罗绚丽1, 武增华1,2, 陈立泉1,2, 邱新平1,2   

    1. 清华大学深圳研究生院, 深圳 518055;
    2. 清华大学化学系, 北京 100084
  • 收稿日期:2006-01-19 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 邱新平

Effects of Proton Exchange Membranes on Performance of Vanadium Redox Flow Battery

Lü Zheng-Zhong1,2, HU Song-Lin1,2, LUO Xuan-Li1, WU Zeng-Hua1,2, CHEN Li-Quan1,2, QIU Xin-Ping1,2   

    1. Graduate School at Shenzhen, Tsinghua University, Guangdong 518055, China;
    2. Department of Chemistry, Tsinghua University, Beijing 100084, China
  • Received:2006-01-19 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: QIU Xin-Ping

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被引次数

46

摘要： 采用溶液接枝聚合法制备了一种新型的质子交换膜PVDF-g-PSSA, 测定了PVDF-g-PSSA膜、Nafion 117 膜和PE01均相膜的离子交换能力和电导率, 并分别研究了以这3种膜为隔膜的钒电池的电化学性能. 实验结果表明, PVDF-g-PSSA膜具有优良的质子电导率和离子交换能力, 室温下其离子交换能力和质子电导率分别为1.13 mmol/g和3.22×10-2 S/cm, 在不同的充放电电流密度下, 以PVDF-g-PSSA膜为隔膜的钒电池的库仑效率和能量效率明显高于Nafion 117膜和PE01均相膜为隔膜的钒电池; PVDF-g-PSSA膜阻钒离子的渗透性能与PE01均相膜基本一致, 都明显优于Nafion 117膜的阻钒离子渗透能力.

关键词: 钒氧化还原液流电池, PVDF-g-PSSA质子交换膜, 离子交换能力, 电导率

Abstract: The poly(vinylidene fluoride)-graft-poly(styrene sulfonic acid) (PVDF-g-PSSA) membrane was prepared by a solution-grafting method for vanadium redox flow battery (VRB)as the separator. The ion exchange capacity (IEC), conductivity of PVDF-g-PSSA, Nafion 117 and PE01 homogeneous membranes were investigated contrastively. The electrochemical performance of VRB with PVDF-g-PSSA, Nafion 117 and PE01 homogeneous membranes as the separator, respectively, was studied. The results show that PVDF-g-PSSA membrane possessed a high conductivity and excellent IEC with a value 3.22×10-2 S/cm and 1.13 mmol/g respectively, at room temperature. PVDF-g-PSSA membrane showed dramatically lower vanadium ion permeability compared to Nafion 117, its coulombic efficiency and energy efficiency of VRB with PVDF-g-PSSA as the separator being higher notablely than that of VRB with Nafion 117 and PE01 homogeneous membranes as the separator.

Key words: Vanadium redox flow battery, PVDF-g-PSSA proton exchange membrane, Ion exchange capacity, Conductivity

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