Local electrochemical characteristics at various operating pressure and temperature values using a segmented polymer electrolyte membrane fuel cell

被引：5
|
作者：
Kim, Young Sang [1 ]
Kim, Dong Kyu [1 ]
Kong, Im Mo [2 ]
Kim, Minsung [3 ]
Kim, Min Soo [1 ]
机构：
[1] Seoul Natl Univ, Dept Mech & Aerosp Engn, Seoul 08826, South Korea
[2] Korea Automot Technol Inst, Gwangju 62233, South Korea
[3] Chung Ang Univ, Sch Energy Syst Engn, Seoul 06974, South Korea
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2016年 / 30卷 / 09期
基金：
新加坡国家研究基金会;
关键词：
High-frequency resistance; Galvanostatic operation; PEM fuel cells; Pressure; Segmented fuel cell; Temperature; RESOLVED IMPEDANCE SPECTROSCOPY; PERFORMANCE; PEFCS;
D O I：
10.1007/s12206-016-0853-7
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The pressurization of reactant gases is one of the solutions for generating considerable power in a polymer electrolyte membrane fuel cell with a restricted size. Electrochemical phenomena, such as current density distribution and ohmic resistance distribution, were observed to validate the effects of operating pressure and temperature on cell performance. The test was conducted in galvanostatic mode, and an inhomogeneous current distribution was observed under a high-pressure condition, except at a high temperature. High-frequency resistance measurement was also conducted to observe local ohmic resistance. Result showed that high pressure and temperature reduced ohmic loss and improved overall cell performance.
引用
收藏
页码：4391 / 4396
页数：6
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