EFFECTS OF TEMPERATURE AND RELATIVE HUMIDITY ON OUTPUT PERFORMANCE AND MEMBRANE WATER CONTENT OF PEMFC

Geng Limin; Shan Shiyu; Huang Feichuang; Huang Dong; Chen Hao; Zhao Weiyan

doi:10.19912/j.0254-0096.tynxb.2024-2272

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (5) : 542-550. DOI: 10.19912/j.0254-0096.tynxb.2024-2272

EFFECTS OF TEMPERATURE AND RELATIVE HUMIDITY ON OUTPUT PERFORMANCE AND MEMBRANE WATER CONTENT OF PEMFC

Geng Limin¹, Shan Shiyu¹, Huang Feichuang¹, Huang Dong¹, Chen Hao¹, Zhao Weiyan²

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Abstract

This research established a simulation model of three-serpentine flow field PEMFC, and studied the polarization curve, membrane water content and membrane water distribution of PEMFC under different temperatures （25-95 ℃） and relative humidity （20%-100%）. Based on sensitivity analysis, the sensitivity indexes of output performance and membrane water content of PEMFC under high temperature & low humidity and low temperature & high humidity are studied, which can provide reference for performance optimization of PEMFC. The results indicate that： 1） In temperature variations, the voltage loss is minimized at 65 °C; at higher voltage regions, the membrane water content decreases with increasing temperature, whereas at lower voltage regions, the membrane water content increases with temperature. 2） In relative humidity variations, the voltage loss is minimized at 80% RH; higher relative humidity results in higher membrane water content and a more uniform distribution. 3） The output performance and membrane water content of PEMFC are more sensitive to changes in temperature under the condition of high temperature & low humidity and low temperature & high humidity.

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proton exchange membrane fuel cells / sensitivity analysis / relative humidity / output performance / membrane water content / operating temperature

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Geng Limin, Shan Shiyu, Huang Feichuang, Huang Dong, Chen Hao, Zhao Weiyan. EFFECTS OF TEMPERATURE AND RELATIVE HUMIDITY ON OUTPUT PERFORMANCE AND MEMBRANE WATER CONTENT OF PEMFC[J]. Acta Energiae Solaris Sinica. 2026, 47(5): 542-550 https://doi.org/10.19912/j.0254-0096.tynxb.2024-2272

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