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Abstract <p>This study investigates the feasibility of using the relaxation response to a stepwise change in load current for real-time monitoring of hydrogen proton exchange membrane fuel cells. It is showing that the relaxation response is accurately described by a model consisting three exponential components. The results of experimental studies on an equivalent model system and a real fuel cell confirmed the effectiveness of the proposed relaxation-based monitoring method. Experimental evidence demonstrated that the slow exponential component of the proposed model enables the detection of hydrogen deficiency within the membrane–electrode assembly of the fuel cell.</p>

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Relaxation-Based Monitoring of Fuel Cells Using an Equivalent Electrical RC Circuit

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • E. S. Denisov,
  • Yu. K. Evdokimov,
  • I. D. Shafigullin,
  • G. V. Nikishina,
  • R. R. Eniliev

摘要

Abstract

This study investigates the feasibility of using the relaxation response to a stepwise change in load current for real-time monitoring of hydrogen proton exchange membrane fuel cells. It is showing that the relaxation response is accurately described by a model consisting three exponential components. The results of experimental studies on an equivalent model system and a real fuel cell confirmed the effectiveness of the proposed relaxation-based monitoring method. Experimental evidence demonstrated that the slow exponential component of the proposed model enables the detection of hydrogen deficiency within the membrane–electrode assembly of the fuel cell.