Transient response of performance in a proton exchange membrane fuel cell under dynamic loading

被引:59
|
作者
Huang, Zhenyu [1 ]
Shen, Jun [1 ,2 ]
Chan, Siew Hwa [2 ]
Tu, Zhengkai [1 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Energy & Power Engn, Wuhan 430074, Peoples R China
[2] Nanyang Technol Univ, Energy Res Inst, 50 Nanyang Ave, Singapore 637553, Singapore
基金
中国国家自然科学基金;
关键词
Proton exchange membrane fuel cell; Dynamic performance; Dehydration; Undershoot; GAS-DISTRIBUTION QUALITY; WATER DISTRIBUTION; FLOW; STOICHIOMETRY; STARVATION; TRANSPORT; BEHAVIOR; BALANCE; PEMFC;
D O I
10.1016/j.enconman.2020.113492
中图分类号
O414.1 [热力学];
学科分类号
摘要
The capability of proton exchange membrane fuel cell to be loaded successfully in a short time is an important consideration for its evaluation as a reliable power source in different applications. In this study, the transient response of the proton exchange membrane fuel cell under various operation states is analysed. The output power is increased by applying a step current, and the response voltage, as an indicator of the dynamic performance, is recorded. The experimental results show that the fuel cell cannot be successfully loaded at start-up when the current step is increased from 0 A cm(-2) to 0.8 A cm(-2). It can be loaded successfully with a step current density of 1.5 A cm(-2) after activation. The dehydration of the membrane can result in large discrepancies in the dynamic performance. A state-of-the-art proton exchange membrane fuel cell should show favourable response to a high step current when loaded smoothly to a high-power output within a short time. The study can provide guideline for the design and control of the dynamic loading in proton exchange membrane fuel cell.
引用
收藏
页数:9
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