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A gradient activation method for direct methanol fuel cells

机译：直接甲醇燃料电池的梯度活化方法

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摘要

To realize gradient activation effect and recover catalytic activity of catalyst in a short time, a gradient activation method has firstly been proposed for enhancing discharge performance and perfecting activation mechanism of the direct methanol fuel cell (DMFC). This method includes four steps, i.e. proton activation, activity recovery activation, H-2-O-2 mode activation and forced discharging activation. The results prove that the proposed method has gradually realized replenishment of water and protons, recovery of catalytic activity of catalyst, establishment of transfer channels for electrons, protons, and oxygen, and optimization of anode catalyst layer for methanol transfer in turn. Along with the novel activation process going on, the DMFC discharge performance has been improved, step by step, to more than 1.9 times higher than that of the original one within 7.5 h. This method provides a practicable activation way for the real application of single DMFCs and stacks.(C) 2017 Elsevier Ltd. All rights reserved.
机译：为了实现梯度活化作用并在短时间内恢复催化剂的催化活性，首先提出了一种梯度活化方法以增强放电性能并完善直接甲醇燃料电池（DMFC）的活化机理。该方法包括四个步骤，即质子活化，活性恢复活化，H-2-O-2模式活化和强制放电活化。结果证明，该方法已逐步实现了水和质子的补充，催化剂催化活性的恢复，电子，质子和氧的转移通道的建立以及甲醇甲醇转移的阳极催化剂层的优化。随着新的激活过程的进行，DMFC的放电性能已逐步提高，在7.5小时内比原来的提高了1.9倍以上。此方法为单个DMFC和堆栈的实际应用提供了可行的激活方式。（C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Energy Conversion & Management》 |2017年第4期|54-60|共7页
  • 作者

    Liu Guicheng; Yang Zhaoyi; Halim Martin; Li Xinyang; Wang Manxiang; Kim Ji Young; Mei Qiwen; Wang Xindong; Lee Joong Kee;

  • 作者单位

    KIST, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

    Univ Sci & Technol Beijing, Dept Phys Chem, 30 Xueyuan Rd, Beijing 100083, Peoples R China;

    KIST, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

    Beijing Jiaotong Univ, Sch Civil Engn, Beijing 100044, Peoples R China;

    Beijing Forestry Univ, Sch Environm Sci & Engn, Beijing 100083, Peoples R China;

    KIST, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

    Univ Seoul, Dept Environm Engn, Siripdae Gil 13, Seoul 130743, South Korea;

    Univ Sci & Technol Beijing, Dept Phys Chem, 30 Xueyuan Rd, Beijing 100083, Peoples R China;

    KIST, Green City Res Inst, Ctr Energy Convergence Res, Hwarang Ro 14 Gil 5, Seoul 02792, South Korea;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Direct methanol fuel cells; Gradient activation; Conditioning method; Mass transfer channel; Activation mechanism;

    机译：直接甲醇燃料电池;梯度活化;调节方法;传质通道;活化机理;

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