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首页> 外文期刊>Journal of power sources >Performance characteristics of a novel tubular-shaped passive direct methano fuel cell
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Performance characteristics of a novel tubular-shaped passive direct methano fuel cell

机译：新型管状被动式直接甲醇燃料电池的性能特征

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摘要

The present work consists of a tubular-shaped direct methanol fuel cell (DMFC) that is operated completely passively with methanol solution stored in a central fuel reservoir. The benefit of a tubular-shaped DMFC over a planar-shaped DMFC is the higher instantaneous volumetric power energy density (power/volume) associated with the larger active area provided by the tubular geometry. Membrane electrode assemblies (MEAs) with identical compositions were installed in both tubular and planar-shaped, passive DMFCs and tested with 1, 2, and 3 M methanol solutions at room temperature. The peak power density for the tubular DMFC was 19.0 mW cm~(-2) and 24.5 mW cm~(-2) while the peak power density for the planar DMFC was 20.0 mW cm~(-2) and 23.0 mW cm~(-2) with Nafion® 212 and 115 MEAs, respectively. Even though the performance of the fuel cell improved with each increase in methanol concentration, the fuel and energy efficiencies decreased for both the tubular and planar geometries due to increased methanol crossover. The tubular DMFC experienced higher methanol crossover potentially due to a higher static fluid pressure in the anode fuel reservoir (AFR) caused by the vertical orientation of the tubular fuel reservoir. The performance of the tubular DMFC in this work represents an 870% improvement in power density from the previous best, passive, tubular DMFC found in the literature.Published by Elsevier B.V.
机译：本工作由管状直接甲醇燃料电池（DMFC）组成，该燃料电池与存储在中央燃料库中的甲醇溶液完全被动地运行。管状DMFC优于平面形DMFC的好处是与由管状几何形状提供的较大的有效面积相关的较高的瞬时体积功率能量密度（功率/体积）。将具有相同组成的膜电极组件（MEA）安装在管状和平面形被动DMFC中，并在室温下用1、2和3 M甲醇溶液进行测试。管状DMFC的峰值功率密度为19.0 mW cm〜（-2）和24.5 mW cm〜（-2），而平面DMFC的峰值功率密度为20.0 mW cm〜（-2）和23.0 mW cm〜（-2 -2）分别使用Nafion®212和115 MEA。即使燃料电池的性能随甲醇浓度的每次提高而提高，但由于甲醇交换增加，管状和平面几何形状的燃料和能量效率均下降。管状DMFC经历了更高的甲醇穿越，这可能是由于管状燃料容器的垂直方向导致阳极燃料容器（AFR）中的静态流体压力较高。在这项工作中，管状DMFC的性能比文献中发现的以前最好的无源管状DMFC的功率密度提高了870％.Elsevier B.V.

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  • 来源
    《Journal of power sources》 |2011年第15期|p.6264-6273|共10页
  • 作者

    Travis Ward; Xianglin Li; Amir Faghri;

  • 作者单位

    Department of Mechanical Engineering, University of Connecticut, Storrs. CT 06269, United States;

    Department of Mechanical Engineering, University of Connecticut, Storrs. CT 06269, United States;

    Department of Mechanical Engineering, University of Connecticut, Storrs. CT 06269, United States;

  • 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

    dmfc; tubular; passive; fuel efficiency; energy efficiency; performance;

    机译：dmfc;管状被动;燃油效率;能源效率;性能;

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