COMPREHENSIVE PERFORMANCE EVALUATION OF PEMFC CONSIDERING GDL COMPRESSION DEFORMATION

Sun Xiuxiu; Wen Panqi; Zhang Qian; Jing Guoxi

doi:10.19912/j.0254-0096.tynxb.2024-0733

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 375-381. DOI: 10.19912/j.0254-0096.tynxb.2024-0733

COMPREHENSIVE PERFORMANCE EVALUATION OF PEMFC CONSIDERING GDL COMPRESSION DEFORMATION

Sun Xiuxiu^1,2, Wen Panqi^1,2, Zhang Qian^1,2, Jing Guoxi^1,2

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Abstract

The compression deformation of the GDL is caused by assembly force. To determine the optimal assembly force for improving fuel cell performance, the GDL deformation, current density distribution, and oxygen concentration distribution of the PEMFC under different assembly forces were analyzed based on experimental and numerical simulation methods. The PEMFC performance was comprehensively evaluated by considering multiple parameters such as pressure drop, power density, and current density distribution. The results show that the assembly force resulted in nonlinear stress-strain compression of the GDL under the rib, with compression reaching 61 % at the assembly force of 2.0 MPa. The power density of PEMFC at 1.0 MPa increased by 4.57 % compared to the results of 0.5 MPa under 0.95 A cm^-2. Moreover, the overall performance of PEMFC at 1.0 MPa was the best by using the entropy weighting method.

Key words

proton exchange membrane fuel cells / assembly / contact resistance / compressive deformation / optimal assembly force / synthesized assessment

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Sun Xiuxiu, Wen Panqi, Zhang Qian, Jing Guoxi. COMPREHENSIVE PERFORMANCE EVALUATION OF PEMFC CONSIDERING GDL COMPRESSION DEFORMATION[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 375-381 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0733

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