...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Advanced energy materials >All-Hydrocarbon MEA for PEM Water Electrolysis Combining Low Hydrogen Crossover and High Efficiency
【24h】

All-Hydrocarbon MEA for PEM Water Electrolysis Combining Low Hydrogen Crossover and High Efficiency

机译：低氢穿越效率高的PEM水电解全烃MEA

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydrocarbon ionomers bear the potential to significantly lower the material cost and increase the efficiency of proton-exchange membrane water electrolyzers (PEMWE). However, no fully hydrocarbon membrane electrode assembly (MEA) with a performance comparable to Nafion-MEAs has been reported. PEMWE-MEAs are presented comprising sPPS as membrane and electrode binder reaching 3.5 A cm(-2) at 1.8 V and thus clearly outperforming state-of-the-art Nafion-MEAs (N115 as membrane, 1.5 A cm(-2) at 1.8 V) due to a significantly lower high frequency resistance (57 +/- 4 m omega cm(2) vs 161 +/- 7 m omega cm(2)). Additionally, pure sPPS-membranes show a three times lower gas crossover (<0.3 mA cm(-2)) than Nafion N115-membranes (>1.1 mA cm(-2)) in a fully humidified surrogate test. Furthermore, more than 80 h of continuous operation is shown for sPPS-MEAs in a preliminary durability test (constant current hold at 1 A cm(-2) at 80 degrees C). These results rely on the unique transport properties of sulfonated poly(phenylene sulfone) (sPPS) that combines high proton conductivity with low gas crossover.
机译：烃离聚物具有显着降低材料成本和提高质子交换膜水电解器（PEMWE）效率的潜力。然而，尚未报道具有与Nafion-MEAs相当的性能的全烃膜电极组件（MEA）。提出了包含膜和电极粘合剂的sPPS，PEMWE-MEAs在1.8 V时达到3.5 A cm（-2），因此明显优于最新的Nafion-MEAs（N115作为膜，在1.5 A cm（-2）时表现出色） 1.8 V）是由于明显降低了高频电阻（57 +/- 4 mΩcm（2）与161 +/- 7 mΩcm（2））。此外，在完全湿润的替代测试中，纯sPPS膜的气体穿越（<0.3 mA cm（-2））比Nafion N115膜（> 1.1 mA cm（-2））低三倍。此外，在初步耐用性测试（80℃下恒定电流保持在1 A cm（-2）下）中，sPPS-MEA的连续运行时间超过80小时。这些结果依赖于结合了高质子传导性和低气体穿越的磺化聚苯撑砜（sPPS）的独特传输特性。

著录项

  • 来源
    《Advanced energy materials》 |2020年第14期|1903995.1-1903995.9|共9页
  • 作者

  • 作者单位

    Hahn Schickard Georges Koehler Allee 103 D-79110 Freiburg Germany|Univ Freiburg Electrochem Energy Syst IMTEK Dept Microsyst Engn Georges Koehler Allee 103 D-79110 Freiburg Germany;

    Max Planck Inst Festkorperforschung Heisenbergstr 1 D-70569 Stuttgart Germany;

    Univ Freiburg Electrochem Energy Syst IMTEK Dept Microsyst Engn Georges Koehler Allee 103 D-79110 Freiburg Germany;

    Agr Univ Georgia 240 David Aghmashenebeli Alley Tbilisi 0131 Georgia;

    Hahn Schickard Georges Koehler Allee 103 D-79110 Freiburg Germany|Univ Freiburg Electrochem Energy Syst IMTEK Dept Microsyst Engn Georges Koehler Allee 103 D-79110 Freiburg Germany|Univ Freiburg Inst & FIT Freiburg Ctr Interact Mat & Bioinspire Georges Kohler Allee 105 D-79110 Freiburg Germany;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrolysis; hydrocarbons; membrane electrode assembly; sulfonated poly(phenylene sulfone); water electrolysis;

    机译：电解;碳氢化合物膜电极组件磺化聚苯砜水电解;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号