期刊
JOURNAL OF POWER SOURCES
卷 326, 期 -, 页码 112-119出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.06.119
关键词
Electrochemical impedance spectroscopy; Inductive phenomena; Inductive loop; Side reactions; Water transport
资金
- Croatian Science Foundation [IP-11-2013-8700, I-2508-2014]
The results of electrochemical impedance spectroscopy of proton exchange membrane (PEM) fuel cells may exhibit inductive phenomena at low frequencies. The occurrence of inductive features at high frequencies is explained by the cables and wires of the test system. However, explanation of inductive loop at low frequencies requires a more detailed study. This review paper discusses several possible causes of such inductive behavior in PEM fuel cells, such as side reactions with intermediate species, carbon monoxide poisoning, and water transport, also as their equivalent circuit representations. It may be concluded that interpretation of impedance spectra at low frequencies is still ambiguous, and that better equivalent circuit models are needed with clearly defined physical meaning of each of the circuit elements. (C) 2016 Elsevier B.V. All rights reserved.
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