Abstract：The performance of a proton exchange membrane fuel cell depends on the membrane electrode assembly (MEA) polarization. The characteristics of a home-made MEA with various polarizations were measured to calculate the internal losses, activation polarization, ohmic polarization, and mass transfer polarization. The results show that the activation polarization has a large effect, especially at low temperatures, while the ohmic polarization has little effect with a maximum difference of about 0.09 V for a current density of 1550 mA/cm2. The mass transfer polarization effect increases rapidly as the current density increases. Moreover, 40%-44% of the oxygen transport resistance comes from the molecular diffusion resistance in the gas diffusion layer with 43%-50% of the resistance originating from the oxygen dissolution and diffusion through the ionomer layer.
赵阳, 王树博, 李微微, 谢晓峰. 质子交换膜燃料电池电压损耗[J]. 清华大学学报（自然科学版）, 2020, 60(3): 254-262.
ZHAO Yang, WANG Shubo, LI Weiwei, XIE Xiaofeng. Polarization of the membrane electrode assembly in a proton exchange membrane fuel cell. Journal of Tsinghua University(Science and Technology), 2020, 60(3): 254-262.
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2020, Vol. 60 
