A semiempirical study of the temperature dependence of the anode charge transfer coefficient of a 6 kW PEM electrolyzer

被引：99

作者：

Biaku, C. Y. ^{[1
]}

Dale, N. V. ^{[1
]}

Mann, M. D. ^{[1
]}

Salehfar, H. ^{[2
]}

Peters, A. I. ^{[2
]}

Han, T. ^{[2
]}

机构：

[1] Univ N Dakota, Dept Chem Engn, Grand Forks, ND 58202 USA

[2] Univ N Dakota, Dept Elect Engn, Grand Forks, ND 58202 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2008年 / 33卷 / 16期

基金：

美国国家科学基金会;

关键词：

Charge transfer coefficient; Symmetry factor; PEM electrolysis; Oxygen electrode;

D O I：

10.1016/j.ijhydene.2008.06.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Temperature dependency of the charge transfer coefficient (CTC) of the oxygen electrode of a commercial proton exchange membrane electrolyzer stack is investigated in this paper. A good estimate of the CTC is important in predicting the current-voltage characteristics of electrolyzers. The estimated CTC also provides insight into the properties of the electrode. The results of this study show that at typical operating temperatures, there is a reasonable variation of the CTC from the symmetry factor. The results indicate that within a temperature range of 20-60 degrees C, the average CTC changes from 0.18 to 0.42 which is clearly lower than the standard symmetry factor of 0.5. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.

引用

页码：4247 / 4254

页数：8

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