Degradation behavior and electrochemical analysis of a PEFC catalyst layer

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  • Ito Masahi
    Advanced Materials Laboratory, Research Division 2, Nissan Motor Co., Ltd., Japan
  • Uchimura Masanobu
    Advanced Materials Laboratory, Research Division 2, Nissan Motor Co., Ltd., Japan
  • Ohma Atsushi
    EV System Laboratory, Research Division 2, Nissan Motor Co., Ltd., Japan

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Other Title
  • 固体高分子形燃料電池における触媒層劣化現象とその電気化学的評価法
  • コタイ コウブンシケイ ネンリョウ デンチ ニ オケル ショクバイソウ レッカ ゲンショウ ト ソノ デンキ カガクテキ ヒョウカホウ

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Description

The fuel cell electric vehicle (FCEV) is expected to be one of the promising “ZERO” emission vehicles along with the battery electric vehicle. For the commercialization of the FCEV, it is significantly important to reduce the production cost, especially of the catalyst layer. Generally, the catalyst layer is composed mainly of Pt nano-particles and a carbon support, and their structure greatly affects the performance and durability of the fuel cell. For example, a Pt/C catalyst consisting of highly dispersed Pt nanoparticles loaded on a high-surface area carbon support is preferable to achieve a better initial performance, whereas such a catalyst often suffers from poor durability. In order to construct a well-balanced catalyst layer, the design of the carbon support is of essential importance. This review describes the mechanism of carbon corrosion caused by the drive modes of the vehicle in both cathode and anode catalyst layers, together with methods for analysis and characterization. Since these processes are often a bottleneck in the development of the FCEV, we hope that the present review will be helpful to the development and improvement of the technology related to FCEVs.

Journal

  • TANSO

    TANSO 2015 (266), 21-30, 2015

    THE CARBON SOCIETY OF JAPAN

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