A two-phase model of an intermediate temperature PEM fuel cell
A two-phase model of an intermediate temperature PEM fuel cell
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DOI：
10.1016/j.ijhydene.2006.10.061
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发表时间：
2007-05-01
影响因子：
7.2
通讯作者：
Munroe, Norman D. H.
中科院分区：
文献类型：
--
作者：
Cheddie, Denver F.;Munroe, Norman D. H.
提出了一种中温（120 - 200℃）质子交换膜（PEM）燃料电池的两相模型。该模型是对我们之前的中温模型的一种改进，因为它考虑了气体在磷酸/聚苯并咪唑（PBI）电解质中的溶解度所导致的两相效应，并考虑了水相电化学反应。该模型考虑了所有的极化和传输现象，并且在温度范围（150 - 170℃）内与实验数据吻合良好。还给出了参数结果，以研究燃料电池性能对膜掺杂水平、催化剂活性以及电解质介质中溶解气体传输特性的依赖性。结果表明，在两个电极处都存在显著的传输限制，其中催化剂利用率在0.1%到1%之间。提出了磷酸的替代掺杂剂，以及对更先进的催化剂沉积技术的需求。（c）2006国际氢能协会。由爱思唯尔有限公司出版。保留所有权利。
A two-phase model of an intermediate temperature (120-200 degrees C) proton exchange membrane (PEM) fuel cell is presented. This model is an improvement on our previous intermediate temperature models, in that it accounts for two phase effects due to gas solubility in the phosphoric acid/polybenzimidazole (PBI) electrolyte, and considers aqueous phase electrochemical reactions. The model accounts for all polarization and transport phenomena, and exhibits a good fit with experimental data in the temperature range (150-170 degrees C). Parametric results are also presented, to investigate the dependence of the fuel cell performance on membrane doping level, catalyst activity, and transport properties of dissolved gases in the electrolyte medium. Results indicate that significant transport limitations exist at both electrodes, where catalyst utilization is between 0.1% and 1%. Alternative doping agents to phosphoric acid are suggested, as well as the need for more advanced catalyst deposition techniques. (c) 2006 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.