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首页> 外文会议>ASME(American Society of Mechanical Engineers) International Mechanical Engineering Congress: Advanced Energy Systems Division; 20031115-20031121; Washington,DC; US >EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF CATALYST LAYER COMPOSITION ON THE PERFORMANCE OF PROTON EXCHANGE MEMBRANE FUEL CELLS
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EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF CATALYST LAYER COMPOSITION ON THE PERFORMANCE OF PROTON EXCHANGE MEMBRANE FUEL CELLS

机译：催化剂层组成对质子交换膜燃料电池性能影响的实验研究

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The catalyst layer of a proton exchange membrane (PEM) fuel cell is a porous mixture of polymer, carbon, and platinum. The characteristics of the catalyst layer play a critical role in determining the performance of the PEM fuel cell. In this research, sample membrane electrode assemblies (MEAs) are prepared using various combinations of polymer and carbon loadings while the platinum catalyst surface area is held constant. For each MEA, polarization curves are determined at common operating conditions. The polarization curves are compared to assess the effects of the catalyst layer composition. The results show that both Nafion and carbon content significantly affect MEA performance. The physical characteristics of the catalyst layer including porosity, thickness, and apparent Nafion film thickness are investigated to explain the variation in performance. The results show that for the range of compositions considered in this work, the porosity and thickness have little effect on performance but the apparent Nafion film thickness is significant.
机译：质子交换膜（PEM）燃料电池的催化剂层是聚合物，碳和铂的多孔混合物。催化剂层的特性在确定PEM燃料电池的性能中起关键作用。在这项研究中，在铂催化剂表面积保持恒定的情况下，使用聚合物和碳载量的各种组合来制备样品膜电极组件（MEA）。对于每个MEA，在共同的工作条件下确定极化曲线。比较极化曲线以评估催化剂层组合物的作用。结果表明，Nafion和碳含量均显着影响MEA的性能。研究了包括孔隙率，厚度和表观Nafion膜厚度在内的催化剂层的物理特性，以解释性能的变化。结果表明，在这项工作中考虑的组成范围内，孔隙率和厚度对性能几乎没有影响，但表观Nafion膜厚度却很显着。

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