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arXiv 1401.4285physics.chem-phcond-mat.mtrl-sci
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评价Polymer电解质膜燃料电池稳态和瞬态运行影响的碳腐蚀模型

A Carbon Corrosion Model to Evaluate the Effect of Steady State and Transient Operation of a Polymer Electrolyte Membrane Fuel Cell

Arun Pandy, Zhiwei Yang, Mallika Gummalla, Vadim V. Atrazhev, Nikolay Yu. Kuzminyh, Vadim I. Sultanov, Sergei F. Burlatsky

摘要:

基于聚合物电解质膜燃料电池电极碳和铂表面氧化物的形成,建立了碳腐蚀模型。该模型预测了电位保持和电位循环条件下的碳腐蚀速率。该模型包括碳表面氧化物的相互作用与瞬态物种,如OH自由基,以解释正常PEM燃料电池操作条件下观察到的碳腐蚀趋势。该模型预测同意定性与实验数据支持的假设,即碳和铂的表面氧化物形成的相互作用是碳腐蚀的主要驱动程序。

英文摘要:

A carbon corrosion model is developed based on the formation of surface oxides on carbon and platinum of the polymer electrolyte membrane fuel cell electrode. The model predicts the rate of carbon corrosion under potential hold and potential cycling conditions. The model includes the interaction of carbon surface oxides with transient species like OH radicals to explain observed carbon corrosion trends under normal PEM fuel cell operating conditions. The model prediction agrees qualitatively with the experimental data supporting the hypothesis that the interplay of surface oxide formation on carbon and platinum is the primary driver of carbon corrosion.

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