Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 42, Issue 16, Pages 11868-11878Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2017.02.146
Keywords
Automotive polymer electrolyte membrane fuel cell; Load profile; Characteristic value; Empirical voltage degradation model; Lifetime prediction
Categories
Funding
- Special Major Fund for Scientific Instruments of Ministry of Science and Technology of P.R.C [2012YQ150256]
- Fundamental Research Funds for the Central Universities
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The prediction of the lifetime of a PEM fuel cell under a specific electrical load profile is beneficial for automotive applications. An empirical lifetime prediction model coupled with an electrical load profile is presented based on an estimate of the degradation rate of the cell voltage. First, a cause and effect chain-based analysis of the PEM fuel cell's degradation process is presented. Second, a characteristic value is extracted and is treated as a numerical measurement of the effect of load profile on voltage degradation. The characteristic value is defined using both load current and load voltage. Third, an empirical model is proposed, modeling the voltage degradation rate as a linear function of the load profiles characteristic value. Finally, experimental data are used to fit the coefficients and validate the model. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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