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首页> 外文期刊>International journal of green energy >ANALYSIS OF THE CORROSION BEHAVIOR OF AL ALLOY BIPOLAR PLATE FOR PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC) UNDER OPERATING THERMAL CONDITIONS
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ANALYSIS OF THE CORROSION BEHAVIOR OF AL ALLOY BIPOLAR PLATE FOR PROTON EXCHANGE MEMBRANE FUEL CELL (PEMFC) UNDER OPERATING THERMAL CONDITIONS

机译：高温条件下质子交换膜燃料电池用铝合金双极板的腐蚀行为分析

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摘要

The durability and efficiency of proton exchange membrane (PEM) fuel cell must meet the demanding requirements before its commercialization. Based on this consideration, the chronological acidity change of proton exchange membrane fuel cell (PEMFC) water and the corrosion of aluminum bipolar plate are investigated in this paper. Two operating factors, cell temperature and fuel gas temperature, and two temperature levels, i.e., 30℃ and 90℃, are designed for the experiments. The fully humidified feeding flows rates are oxygen gas (140 sccm) at the cathode side and hydrogen gas (210 sccm) at the anode side. The constant current density test is set to 1200 mA/cm~2. Characteristics of product water that drained from the PEMFC cathode outlet are measured by a pH meter in a real-time process. The chronological water acidity varied case by case, and its pH value ranged from 3.5 to 7. Abundant free radicals formed easily when the cell temperature is operated at 90℃, and it enhances the acidity of PEMFC water. The microstructure of the corrosive surface is also observed by a scanning electron microscope (JSM series model number 6500F, JEOL Inc.) equipped with an energy dispersive X-ray spectroscopy (EDAX) system.
机译：质子交换膜（PEM）燃料电池的耐久性和效率必须满足其商业化之前的苛刻要求。基于此考虑，本文研究了质子交换膜燃料电池（PEMFC）水随时间的酸度变化和铝双极板的腐蚀。为实验设计了两个工作因素，电池温度和燃料气体温度，以及两个温度水平，即30℃和90℃。完全湿润的进料流速为阴极侧的氧气（140 sccm）和阳极侧的氢气（210 sccm）。恒定电流密度测试设置为1200 mA / cm〜2。从PEMFC阴极出口排出的产物水的特性通过pH计实时测量。随时间变化的水酸度随情况变化，其pH值在3.5至7之间。当电池温度在90℃下操作时，容易形成大量的自由基，从而增强了PEMFC水的酸度。还通过配备有能量色散X射线光谱法（EDAX）系统的扫描电子显微镜（JSM系列型号6500F，JEOL Inc.）观察腐蚀表面的微观结构。

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  • 来源
    《International journal of green energy》 |2012年第4期|p.71-83|共13页
  • 作者

    Kung-Hsu Hou; Chien-Hung Lin; Ming-Der Ger; Sheau-Wen Shiah; Hsi-Ming Chou;

  • 作者单位

    Department of Power Vehicle and Systems Engineering, National Defense University, Taoyuan, Taiwan;

    Graduate School of Defense Science, Chung Cheng Institute of Technology, National Defense University, Taoyuan 335, Taiwan;

    Department of Chemical and Materials Engineering, National Defense University, Taoyuan, Taiwan;

    Department of Power Vehicle and Systems Engineering, National Defense University, Taoyuan, Taiwan;

    Department of Power Vehicle and Systems Engineering, National Defense University, Taoyuan, Taiwan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    PEMFC; pH value; aluminum bipolar plate; free radical; acidity;

    机译：PEMFC;酸碱值;铝双极板;自由基;酸度;

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