ABSTRACT

Although high-temperature proton exchange membrane electrolyzer cells (HT-PEMECs) have been promising devices to store energy in recent years, the effect of certain parameters on their performance is still unclear. Therefore, a 2D multiphysics model is adopted to study the related processes of electrochemical reactions in an HT-PEMEC. The model is validated by comparison with electrochemical experimental data. Subsequently, the effects of applied voltage, anode water mass fraction, anode gas velocity, and cathode gas velocity on the multiphysics are studied, and the trends of efficiency and conversion rate are analyzed. Thermoneutral voltage is observed through a parametric study. Moreover, the maximum energy efficiency (54.5%) is obtained by optimizing the operating conditions. This study can be regarded as a foundation for the subsequent control and multi-objective optimization research.

摘要

尽管近年来高温质子交换膜电解槽（HT-PEMECs）是一种很有前途的储能装置，但某些参数对其性能的影响仍不清楚。因此，采用二维多物理场模型来研究 HT-PEMEC 中电化学反应的相关过程。通过与电化学实验数据的比较验证了该模型。随后，研究了外加电压、阳极水质量分数、阳极气体速度和阴极气体速度对多物理场的影响，并分析了效率和转化率的变化趋势。通过参数研究观察到热中性电压。此外，通过优化运行条件获得最大能效（54.5%）。