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针对质子交换膜燃料电池所用的含有铂黑或碳载铂电催化剂的多孔气体扩散电极，采用循环伏安技术和塔菲尔曲线法，以氢、氧为反应气，对不同温度和压力下的Pt/Nafion界面的氧还原电极动力学进行了研究．解释了铂含量和浸入Nafion对电极动力学参数的影响．当电流密度小于1A／cm2时，与温度、氧压力和电极类型无关，塔菲尔斜率约为-60mA/dec.氧的反应级数为1级．在电极催化层内浸入Nafion只是增大了电化学活性表面积，对电极动力学参数无影响．
Porous gas diffusion electrode containing platinum black or platinum-on-platinum electrocatalyst for proton exchange membrane fuel cell was prepared by cyclic voltammetry and Tafel curve method. Hydrogen and oxygen were used as reactant gases to treat gas diffusion under different temperatures and pressures The kinetics of the oxygen reduction electrode at the Pt / Nafion interface was investigated. The effect of platinum content and immersion in Nafion on the kinetic parameters of the electrode was explained. At current densities of less than 1 A / cm2, the Tafel slope is about -60 mA / dec regardless of temperature, oxygen pressure, and electrode type. The oxygen reaction order is level 1. The immersion of Nafion in the electrode catalyst layer only increased the electrochemically active surface area and had no effect on the electrode kinetic parameters.