Experimental study of polymer electrolyte membrane fuel cell performance under low operating temperatures

Dowon Cha; Bosung Kim; Yong Chan Kim

doi:10.3795/KSME-B.2014.38.8.687

Experimental study of polymer electrolyte membrane fuel cell performance under low operating temperatures

Dowon Cha, Bosung Kim, Yong Chan Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, the performance characteristics of a polymer electrolyte membrane fuel cell (PEMFC) were investigated at low operating temperatures under steady-state and dynamic conditions. The performance of the PEMFC was analyzed according to the external humidifying rate and air stoichiometry. The ohmic resistance was also investigated using EIS tests. At the operating temperature of 35°C, voltage fluctuation occurred to a greater degree compared to that at 45°C. Therefore, it was found that the air stoichiometry should be higher than 2.5 for the stable operation of the fuel cell. In addition, the relative humidity of the reactant gases should be higher than 60 to reduce the ohmic resistance.

Original language	English
Pages (from-to)	687-693
Number of pages	7
Journal	Transactions of the Korean Society of Mechanical Engineers, B
Volume	38
Issue number	8
DOIs	https://doi.org/10.3795/KSME-B.2014.38.8.687
Publication status	Published - 2014

Keywords

Dynamic Characteristics
Lower Operating Temperature
PEMFC
Performance

ASJC Scopus subject areas

Mechanical Engineering

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AB - In this study, the performance characteristics of a polymer electrolyte membrane fuel cell (PEMFC) were investigated at low operating temperatures under steady-state and dynamic conditions. The performance of the PEMFC was analyzed according to the external humidifying rate and air stoichiometry. The ohmic resistance was also investigated using EIS tests. At the operating temperature of 35°C, voltage fluctuation occurred to a greater degree compared to that at 45°C. Therefore, it was found that the air stoichiometry should be higher than 2.5 for the stable operation of the fuel cell. In addition, the relative humidity of the reactant gases should be higher than 60 to reduce the ohmic resistance.

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