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Effect of Water Electrolysis Catalysts on Carbon Corrosion in Polymer Electrolyte Membrane Fuel Cells

机译:水电解催化剂对聚合物电解质膜燃料电池碳腐蚀的影响

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摘要

A new approach to preventing electrochemical carbon corrosion in the cathode of polymer electrolyte membrane fuel cells (PEMFCs) was developed. The addition of 2 wt % lrO_2 (0.016 mg cm_(-2)) to the catalyst layer of the cathode was demonstrated to reduce the electrochemical corrosion of carbon by 76% at 1.6 V_(NHE) and 70 ℃ compared with a commercial Pt/C catalyst of the same Pt loading of 0.4 mg crrr~(-2) and under the same test conditions. The IrO_2 was shown to behave as a catalyst for water electrolysis, thereby removing water from the catalyst layer, which promoted electrochemical carbon corrosion.
机译:开发了一种防止聚合物电解质膜燃料电池(PEMFC)阴极发生电化学碳腐蚀的新方法。与商用Pt /相比,向阴极催化剂层中添加2 wt%lrO_2(0.016 mg cm _(-2))可在1.6 V_(NHE)和70℃下将碳的电化学腐蚀降低76%。在相同测试条件下,相同的Pt负载量为0.4 mg crrr〜(-2)的C催化剂。已显示IrO_2充当水电解的催化剂,从而从催化剂层中除去水,从而促进了电化学碳腐蚀。

著录项

  • 来源
    《Journal of the American Chemical Society》 |2010年第42期|p.14700-14701|共2页
  • 作者

    Sang-Eun Jang; Hansung Kim;

  • 作者单位

    Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Republic of Korea;

    rnDepartment of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Republic of Korea;

  • 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);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 入库时间 2022-08-18 03:15:55

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