Effect of proton conductivity transients on PEM fuel cell impedance: Formation of a low-frequency inductive loop

被引：8

作者：

Kulikovsky, Andrei ^{[1
,2
]}

机构：

[1] Forschungszentrum Julich GmbH, Theory & Computat Energy Mat IEK13, Inst Energy & Climate Res, D-52425 Julich, Germany

[2] Lomonosov Moscow State Univ, Res Comp Ctr, Moscow 119991, Russia

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2022年 / 140卷

关键词：

PEM fuel cell; Impedance; Proton conductivity; Modeling; EXCHANGE MEMBRANE; MODEL; CHANNEL; FLOW;

D O I：

10.1016/j.elecom.2022.107340

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A model for PEMFC cathode impedance is developed. The model includes transient response of catalyst layer proton conductivity to cell current density variation. Analytical solution shows that transient conductivity leads to formation of a low-frequency inductive loop in the Nyquist spectrum. This loop has been observed in numerous experiments and its nature has long been discussed in literature. The results of this work provide a new mechanism of loop formation.

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页数：4

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