Water Transport through a Proton-Exchange Membrane (PEM) Fuel Cell Operating near Ambient Conditions: Experimental and Modeling Studies
Water Transport through a Proton-Exchange Membrane (PEM) Fuel Cell Operating near Ambient Conditions: Experimental and Modeling Studies
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DOI：
10.1021/ef8004948
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发表时间：
2009-01
期刊：
影响因子：
5.3
通讯作者：
D. S. Falcão;C. M. Rangel;C. Pinho;A. Pinto
中科院分区：
文献类型：
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作者：
D. S. Falcão;C. M. Rangel;C. Pinho;A. Pinto
在目前的工作中，一个“内部”开发的质子交换膜（PEM）燃料电池的活性膜面积为25平方厘米的性能的实验研究。来自Paxitech的膜/电极组件（MEA）具有七层[膜/催化剂层/气体扩散层（GDL）/垫圈]。催化层在两侧具有70%Pt/C和0.5mg Pt/cm 2的负载，并且膜由Nafion 112制成。阳极和阴极流动通道使用多蛇形构造。实验在不同的阳极和阴极相对湿度（RH）和流量下进行。预测从以前开发的一维模型，耦合质量和热传递的影响，进行比较实验的极化曲线。根据预测的跨膜水含量解释了阳极和阴极相对湿度水平对电池性能的影响。在研究的操作条件下，水的净水通量。
In the present work, an experimental study on the performance of an “in-house”-developed proton-exchange membrane (PEM) fuel cell with 25 cm2 of active membrane area is described. The membrane/electrodes assembly (MEA), from Paxitech, has seven layers [membrane/catalyst layers/gas diffusion layers (GDLs)/gaskets]. The catalytic layers have a load of 70% Pt/C and 0.5 mg of Pt/cm2 on both sides, and the membrane is made of Nafion 112. A multiserpentine configuration for the anode and cathode flow channels is used. Experiments were carried out under different anode and cathode relative humidities (RHs) and flow rates. Predictions from a previously developed one-dimensional model, coupling mass- and heat-transfer effects, are compared to experimental polarization curves. The influence of the anode and cathode relative humidification level on the cell performance is explained under the light of the predicted water content across the membrane. Under the operating conditions studied, the net water flux of water ...