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Insights into electrochemical hydrogen compressor operating parameters and membrane electrode assembly degradation mechanisms
Journal of Power Sources ( IF 8.1 ) Pub Date : 2020-11-27 , DOI: 10.1016/j.jpowsour.2020.229249
Jiexin Zou , Yiqi Jin , Zengyin Wen , Shuang Xing , Ning Han , Keguang Yao , Zhiliang Zhao , Ming Chen , Jiantao Fan , Hui Li , Haijiang Wang

Understanding how to control the different operating parameters in an electrochemical hydrogen compressor can provide a basis for further improving its performance. In this paper, the effects of hydrogen stoichiometric ratio:1.0–2.0, input temperature: 30–90 °C, inlet pressure: 30–90 kPa were systematically analyzed. Besides, we evaluate and discuss how various operating parameters and current densities affect the running performance, charge transfer, mass transfer, and kinetics of the hydrogen electrode reaction, using I–V curves and electrochemical impedance spectroscopy. Time and energy consumption are recorded at different voltages during the hydrogen compression process. For different actual needs, it is determined that 0.3 V is the best choice for a compression ratio of up to 22 in this system. We also analyze the causes and mechanisms of membrane electrode assembly deterioration and suggest improvements in the compression process and operation strategy.



中文翻译:

深入了解电化学氢气压缩机的运行参数和膜电极组件的降解机理

了解如何控制电化学氢压缩机中的不同运行参数可以为进一步提高其性能提供基础。本文系统地分析了氢化学计量比:1.0–2.0,输入温度:30–90°C,入口压力:30–90 kPa的影响。此外,我们使用I–V曲线和电化学阻抗谱,评估和讨论各种操作参数和电流密度如何影响运行性能,电荷转移,质量转移和氢电极反应的动力学。在氢气压缩过程中,在不同的电压下记录的时间和能量消耗。对于不同的实际需求,在此系统中,对于高达22的压缩比,确定0.3 V是最佳选择。

更新日期:2020-11-27
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