...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of power sources >Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell
【24h】

Modulation of of the microstructure of the Ag/C-based alkaline cathode via the ionomer content for a bipolar membrane fuel cell

机译：通过双极性膜燃料电池的离聚物含量调节基于Ag / C的碱性阴极的微观结构

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

Ag/C is evaluated as a cathode catalyst for a bipolar membrane fuel cell (BPMFC). The microstructure of the cathode catalyst layer is modulated via ionomer content, and the effects on BPMFC performance are studied. When the ionomer content is increased from 10 wt% to 30 wt%, the fuel cell performance is optimized at 19.3 mW/cm(2) with an ionomer content of 20 wt%. Electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) are conducted on the catalyst layer. EIS indicates that the charge transfer resistance is minimum, while CV suggests that the highest electrocatalytic activity of the catalyst is achieved with an ionomer content of 20 wt%. The microstructure of the catalyst layer is characterized using scanning electron microscopy (SEM) and nanometer-scale X-ray computed tomography (nano-CT). The SEM results show that excess ionomer cover on the surface of the catalyst, and the catalyst seems to form larger aggregates. Nano-CT, however, produces quite different results. The reconstructed 3D image of the catalyst layer reveals that the Ag/C catalyst tends to aggregate at low ionomer content. When the ionomer content is increased from 10 wt% to 30 wt%, the average diameter of the catalyst aggregation decreases from 313 nm to 210 nm. (C) 2017 Elsevier B.V. All rights reserved.
机译：Ag / C被评估为双极膜燃料电池（BPMFC）的阴极催化剂。通过离聚物含量调节阴极催化剂层的微观结构，并研究其对BPMFC性能的影响。当离聚物含量从10 wt％增加到30 wt％时，以20 wt％的离聚物含量将燃料电池性能优化为19.3 mW / cm（2）。电化学阻抗谱（EIS）和循环伏安法（CV）在催化剂层上进行。 EIS表明电荷转移阻力最小，而CV表明离聚物含量为20 wt％时可以实现催化剂的最高电催化活性。使用扫描电子显微镜（SEM）和纳米级X射线计算机断层扫描（nano-CT）对催化剂层的微观结构进行表征。 SEM结果表明过量的离聚物覆盖在催化剂表面上，并且催化剂似乎形成较大的聚集体。但是，Nano-CT会产生完全不同的结果。催化剂层的重建3D图像显示，Ag / C催化剂倾向于在低离聚物含量下聚集。当离聚物含量从10重量％增加至30重量％时，催化剂聚集体的平均直径从313nm降低至210nm。 （C）2017 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Journal of power sources》 |2017年第30期|92-99|共8页
  • 作者

    Xu Xin; Peng Sikan; Lu Shanfu; Gong Jian; Zhang Jin; Huang Wanxia; Xiang Yan;

  • 作者单位

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, Peoples R China;

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, Peoples R China|Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China;

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, Peoples R China;

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, Peoples R China;

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, Peoples R China;

    Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China;

    Beihang Univ, Beijing Key Lab Bioinspired Energy Mat & Devices, Sch Space & Environm, Beijing 100191, 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

    Bipolar membrane fuel cell; Ag/C; Cathode catalyst layer; Ionomer content; Nano-CT;

    机译：双极膜燃料电池;Ag / C;阴极催化剂层;离聚物含量;Nano-CT;

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