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首页> 外文期刊>Journal of power sources >Design and fabrication of a silicon-based direct methanol fuel cell with a new cathode spoke structure
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Design and fabrication of a silicon-based direct methanol fuel cell with a new cathode spoke structure

机译：具有新型阴极辐条结构的硅基直接甲醇燃料电池的设计与制造

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摘要

In this paper, a self-breathing micro direct methanol fuel cell (u.DMFC) featuring a new cathode current collector with a spoke configuration is presented to improve cell performance. Simulation results show that the new spoke structure can effectively increase the efficiency of oxygen mass transport and exhibit higher pressure than the conventional perforated structure. The water transfer to the proton exchange membrane (PEM) is promoted to reduce the PEM resistance with the increase in the membrane water content. Additionally, the effects of the spoke blades on performance were evaluated to determine the optimal cathode structure. The self-breathing μDMFCs with conventional and new cathode structures were fabricated using silicon-based micro-electromechanical system (MEMS) technologies and tested at room temperature with 1 M methanol solution. The experimental results revealed that the spoke cathode structure exhibits significantly higher performance than the conventional structure, showing a substantial 30% increase in peak power density.
机译：在本文中，提出了一种具有新的具有辐条构造的阴极集电器的自吸式微直接甲醇燃料电池（u.DMFC），以改善电池性能。仿真结果表明，与传统的穿孔结构相比，新的辐条结构可以有效地提高氧气的传输效率，并具有更高的压力。随着膜水含量的增加，促进了向质子交换膜（PEM）的水转移，从而降低了PEM抵抗力。此外，评估了辐条叶片对性能的影响，以确定最佳的阴极结构。使用基于硅的微机电系统（MEMS）技术制造具有传统和新型阴极结构的自吸式μDMFC，并在室温下用1 M甲醇溶液进行测试。实验结果表明，轮辐阴极结构比常规结构具有更高的性能，峰值功率密度显着提高了30％。

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  • 来源
    《Journal of power sources》 |2011年第6期|p.3015-3025|共11页
  • 作者

    Yufeng Zhang; Zhenyu Yuan; Yuling Li; Qi Jia; Song Chen; Xiaowei Liu;

  • 作者单位

    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;

    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;

  • 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; self-breathing; cathode structure; spoke;

    机译：微型直接甲醇燃料电池;自我呼吸阴极结构;辐;

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