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首页> 外文期刊>Advanced energy materials >A Highly Order-Structured Membrane Electrode Assembly with Vertically Aligned Carbon Nanotubes for Ultra-Low Pt Loading PEM Fuel Cells
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A Highly Order-Structured Membrane Electrode Assembly with Vertically Aligned Carbon Nanotubes for Ultra-Low Pt Loading PEM Fuel Cells

机译：具有超低Pt负载PEM燃料电池的垂直排列碳纳米管的高度有序结构的膜电极组件

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摘要

A simple method was developed to prepare ultra-low Pt loading membrane electrode assembly (MEA) using vertically aligned carbon nanotubes (VACNTs) as highly ordered catalyst support for PEM fuel cells application. In the method, VACNTs were directly grown on the cheap household aluminum foil by plasma enhanced chemical vapor deposition (PECVD), using Fe/Co bimetallic catalyst. By depositing a Pt thin layer on VACNTs/Al and subsequent hot pressing, Pt/VACNTs can be 100% transferred from Al foil onto polymer electrolyte membrane for the fabrication of MEA. The whole transfer process does not need any chemical removal and destroy membrane. The PEM fuel cell with the MEA fabricated using this method showed an excellent performance with ultra-low Pt loading down to 35 μg cm−2 which was comparable to that of the commercial Pt catalyst on carbon powder with 400 μg cm−2. To the best of our knowledge, for the first time, we identified that it is possible to substantially reduce the Pt loading one order by application of order-structured electrode based on VACNTs as Pt catalysts support, compared with the traditional random electrode at a comparable performance through experimental and mathematical methods.
机译：开发了一种简单的方法来制备超低Pt负载膜电极组件（MEA），该组件使用垂直排列的碳纳米管（VACNTs）作为PEM燃料电池应用的高度有序的催化剂载体。在该方法中，使用Fe / Co双金属催化剂通过等离子增强化学气相沉积（PECVD）将VACNTs直接生长在廉价的家用铝箔上。通过在VACNTs / Al上沉积一层Pt薄层并随后进行热压，可以将Pt / VACNTs从铝箔中100％转移到聚合物电解质膜上以制造MEA。整个转移过程不需要任何化学去除和破坏膜。使用这种方法制造的具有MEA的PEM燃料电池具有出色的性能，超低的Pt负载低至35μgcm-2，这与在400μgcm-2的碳粉上的商用Pt催化剂相当。据我们所知，这是我们首次发现，与传统的无规电极相比，通过使用基于VACNTs的有序结构电极作为Pt催化剂的支持物，与传统的无规电极相比，可以大幅降低Pt的负载量。通过实验和数学方法来提高性能。

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  • 来源
    《Advanced energy materials》 |2011年第6期|1-10|共10页
  • 作者

    Zhi Qun Tian; San Hua Lim; Chee Kok Poh; Zhe Tang; Zetao Xia; Zhiqiang Luo; Pei Kang Shen; Daniel Chua; Yuan Ping Feng; Zexiang Shen; Jianyi Lin;

  • 作者单位

    Institute of Chemical and Engineering Sciences 1 Pesek Road Jurong Island Singapore 627833 Singapore;

    Institute of Chemical and Engineering Sciences 1 Pesek Road Jurong Island Singapore 627833 Singapore;

    Institute of Chemical and Engineering Sciences 1 Pesek Road Jurong Island Singapore 627833 Singapore;

    Department of Materials Science and Engineering National University of Singapore Singapore 117542 Singapore;

    Institute of Materials Research and Engineering 3 Research Link Singapore 117602 Singapore;

    Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 637371 Singapore Singapore;

    State Key Laboratory of Optoelectronic Materials and Technologies and Key Laboratory of Low-carbon Chemistry Energy Conservation of Guangdong Province School of Physics and Engineering Sun Yat-sen University Guangzhou 510275 PR China;

    Department of Materials Science and Engineering National University of Singapore Singapore 117542 Singapore;

    Department of Physics National University of Singapore Singapore 117542 Singapore;

    Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 637371 Singapore Singapore;

    Institute of Chemical and Engineering Sciences 1 Pesek Road Jurong Island Singapore 627833 Singapore;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    ultra low Pt loading; vertically aligned carbon nanotubes; membrane electrode assembly; fuel cell;

    机译：超低铂负载;垂直排列的碳纳米管;膜电极组件;燃料电池;

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