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首页> 外文期刊>International journal of hydrogen energy >Proton exchange membranes with ultra-low vanadium ions permeability improved by sulfated zirconia for all vanadium redox flow battery
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Proton exchange membranes with ultra-low vanadium ions permeability improved by sulfated zirconia for all vanadium redox flow battery

机译：硫酸盐氧化锆改善了所有钒氧化还原液流电池的超低钒离子渗透性的质子交换膜

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摘要

Suppressing vanadium ions crossover is a top priority in the development of membranes for vanadium redox flow battery (VRFB). One method is to dope inorganic fillers into polymer matrix, which usually decreases membrane's ion conductivity. In this work, sulfated zirconia (S-ZrO2) is synthesized as a novel additive doped in sulfated poly (ether sulfone) (SPES) to simultaneously enhance the proton conduction and inhibit vanadium migration of the membranes. Membrane characterizations including battery test are carried out to reveal the effects of S-ZrO2 on the membrane performance. The SPES/S-ZrO2 composite membranes show vanadium permeability one order of magnitude lower than that of Nafion 212 and enhanced proton conductivity, which lead to superior cell performance. The columbic efficiency and energy efficiency of the VRFB reach 98.89% and 86.78%, respectively, at 100 mA cm(-2). Cycling test is carried out to evaluate the chemical and electrochemical stability of the membrane. Energy efficiency above 86% is maintained after70 charge-discharge cycles at 100 mA cm(-2). (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：抑制钒离子穿越是钒氧化还原液流电池（VRFB）膜开发的重中之重。一种方法是将无机填料掺入聚合物基质中，这通常会降低膜的离子传导率。在这项工作中，合成了硫酸化氧化锆（S-ZrO2）作为掺杂在硫酸化聚醚砜（SPES）中的新型添加剂，以同时增强质子传导并抑制膜的钒迁移。进行了包括电池测试在内的膜表征，以揭示S-ZrO2对膜性能的影响。 SPES / S-ZrO2复合膜的钒渗透性比Nafion 212低1个数量级，并且质子传导性增强，从而具有优异的电池性能。在100 mA cm（-2）下，VRFB的哥伦比亚效率和能量效率分别达到98.89％和86.78％。进行循环测试以评估膜的化学和电化学稳定性。 100 mA cm（-2）下的70个充放电循环后，能效保持在86％以上。 （C）2019氢能出版物有限公司。由Elsevier Ltd.出版。保留所有权利。

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  • 来源
    《International journal of hydrogen energy》 |2019年第12期|5997-6006|共10页
  • 作者

    Zhang Yue; Zhou Xinjie; Xue Rui; Yu Qingchun; Jiang Fengjing; Zhong Yuguang;

  • 作者单位

    Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Fuel Cell, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Fuel Cell, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    SJTU ParisTech Elite Inst Technol, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Fuel Cell, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Fuel Cell, 800 Dongchuan Rd, Shanghai 200240, Peoples R China;

    Hainan Guangyu Biotechnol Co Ltd, Haikou 570216, Hainan, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Vanadium redox flow battery; Proton exchange membranes; Proton conductivity; Vanadium permeability; Energy efficiency;

    机译：钒氧化还原液流电池质子交换膜质子传导率钒渗透率能源效率;

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