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Investigations of silicon-based air-breathing micro direct methanol fuel cells with different anode flow fields

机译：不同阳极流场的硅基透气微型直接甲醇燃料电池的研究

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摘要

Different anode flow fields of air-breathing micro direct methanol fuel cells (uDMFCs) are investigated to improve the cell performances. The single-serpentine flow field can effectively improve the methanol mass transport efficiency and exhibit higher exhaust resultant (CO_2) rates than other flow fields such as gird, parallel and double-serpentine. Additionally, the effects of open ratios and channel lengths on the cell performance are evaluated to determine the optimal anode flow field structures. The μDMFCs with different anode flow fields are fabricated using silicon-based micro-electro-mechanical systems (MEMS) technologies and are tested at room temperature. The experimental results show that the single-serpentine flow field exhibits a significantly higher performance than those of other flow fields, demonstrating 16.83 mW cm~(-2) in peak power density and a substantial increase in mass transport coefficients. Moreover, for optimum single-serpentine flow field, it is appropriate for the flow channel dimensions to be in the ratio of 2:3:254 for channel width: ridge width: channel length.
机译：研究了可呼吸的微型直接甲醇燃料电池（uDMFC）的不同阳极流场，以提高电池性能。单蛇形流场可以有效地提高甲醇的传质效率，并且比网格，平行和双蛇形流场表现出更高的尾气生成率（CO_2）。另外，评估开口率和通道长度对电池性能的影响，以确定最佳的阳极流场结构。使用基于硅的微机电系统（MEMS）技术制造具有不同阳极流场的μDMFC，并在室温下进行测试。实验结果表明，单蛇形流场比其他流场具有更高的性能，峰值功率密度为16.83 mW cm〜（-2），传质系数大大提高。此外，为了获得最佳的单蛇形流场，对于流道宽度：脊宽：流道长度，流道尺寸的比例应为2：3：254。

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  • 来源
    《Microelectronic Engineering》 |2013年第11期|180-184|共5页
  • 作者

    Huichao Deng; Shengtian Sang; Yufeng Zhang; Zipeng Li; Xiaowei Liu;

  • 作者单位

    MEMS Center, Harbin Institute of Technology, Harbin 150001, China;

    MEMS Center, Harbin Institute of Technology, Harbin 150001, China;

    MEMS Center, Harbin Institute of Technology, Harbin 150001, China,Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, China;

    MEMS Center, Harbin Institute of Technology, Harbin 150001, China;

    MEMS Center, Harbin Institute of Technology, Harbin 150001, China,Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, Harbin 150001, 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

    Micro direct methanol fuel cell; Serpentine flow fields; Micro-electro-mechanical systems; Mass transport;

    机译：微型直接甲醇燃料电池;蛇形流场;微机电系统;大量运输;

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