...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of power sources >Investigation of gas diffusion layer compression by electrochemical impedance spectroscopy on running polymer electrolyte membrane fuel cells
【24h】

Investigation of gas diffusion layer compression by electrochemical impedance spectroscopy on running polymer electrolyte membrane fuel cells

机译：电化学阻抗谱对运行中的聚合物电解质膜燃料电池气体扩散层压缩的研究

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

Two gas diffusion layers based on the same carbon cloth substrate, produced by an Italian Company (SAAT1), and coated with microporous layers of different hydrophobicities, were assembled in a polymer electrolyte membrane fuel cell and its performances assessed. For comparison the cell mounting the carbon cloth without microporous layer was also tested. The membrane electrode assembly was made of Nafion® 212 with Pt load 0.3/0.6 mg era2 (anode/cathode). The cell testing was run at 60 C and 80 C with fully humidified air (100%RH) and 80%RH hydrogen feedings. The assembly of gas diffusion layers and membrane with electrodes was compressed to 30& and 50% of its initial thickness. For each config uration polarization and power curves were recorded; in order to evaluate the role of different GDLs, AC impedance spectroscopy of the running cell was also performed. The higher compression ratio caused the worsening of cell performances, partially mitigated when the operating temperature was raised to 80 C. The presence of the microporous layer onto the carbon cloth resulted extremely beneficial for the operations especially at high current density; moreover, it sensibly reduces the hieh freauencv resistance of the overall assembly.
机译：由意大利公司（SAAT1）生产的，基于相同碳布基材的两个气体扩散层组装在聚合物电解质膜燃料电池中，并涂覆了不同疏水性的微孔层，并评估了其性能。为了比较，还测试了安装有无微孔层的碳布的电池。膜电极组件由212制成，Pt负载为0.3 / 0.6 mg era2（阳极/阴极）。电池测试是在60°C和80°C的条件下进行的，在完全潮湿的空气（100％RH）和80％RH的氢气进料下进行。气体扩散层和带有电极的膜的组件被压缩到其初始厚度的30％和50％。对于每种配置，记录极化和功率曲线；为了评估不同GDL的作用，还对运行单元进行了AC阻抗谱分析。较高的压缩比导致电池性能变差，当工作温度升至80°C时，部分缓解了这种情况。碳布上微孔层的存在对运行特别有利，特别是在高电流密度下；此外，它显着降低了整个组件的耐摩擦性。

著录项

  • 来源
    《Journal of power sources》 |2011年第21期|p.8955-8966|共12页
  • 作者

    Giovanni Dotelli; Luca Omati; Paola Gallo Stampino; Paolo Grassini; Davide Brivio;

  • 作者单位

    Politecnico di Milano - Dipartimento di Chimica Materiali e Ingegneria Chimica "C. Natta", Piazza Leonardo da Vinci 32,20133 Milano, Italy;

    Politecnico di Milano - Dipartimento di Chimica Materiali e Ingegneria Chimica "C. Natta", Piazza Leonardo da Vinci 32,20133 Milano, Italy;

    Politecnico di Milano - Dipartimento di Chimica Materiali e Ingegneria Chimica "C. Natta", Piazza Leonardo da Vinci 32,20133 Milano, Italy;

    SAAT1 srl, via Quasimodo, Legnano. 20025 Milano. Italy;

    SAAT1 srl, via Quasimodo, Legnano. 20025 Milano. Italy;

  • 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

    gas diffusion layer; microporous layer; electrochemical impedance spectroscopy; compression; pem-fc;

    机译：气体扩散层;微孔层;电化学阻抗谱;压缩;pem-fc;

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