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采用自设计的特制H 形电解槽模拟单个氢 空气质子交换膜燃料电池运作,并以电化学方法、SEM及XRD等技术研究两种商用催化剂,即碳载铂(Pt/C)和纯铂钌(Pt Ru)的电催化活性、表面形貌及其结构和寿命.同时对比了两种催化剂分别放在H 形电解槽和常规电解槽中运行情况的测试结果.实验表明,经过H 形电解槽运行后的催化剂,其循环伏安曲线表征氢吸脱的特征峰分别发生了正偏移(Pt/C电极)和负偏移(Pt Ru电极),且对应的峰电流呈现减小的趋势(特别是Pt/C电极).一氧化碳的毒化造成纯铂钌的电催化活性显著下降,其影响是不可逆的.
A single hydrogen-air proton exchange membrane fuel cell was simulated with a specially designed H-shaped cell. Two commercially available catalysts, Pt / C and Pt, were studied electrochemically, SEM and XRD. (Pt Ru), the surface morphology, the structure and the life span of the Pt-Ru catalyst were also compared.The results of the tests on the operation of the two catalysts in the H-shaped cell and the conventional cell were compared.The experimental results show that the Pt- After running, the characteristic peaks of hydrogen absorption and desorption were characterized by cyclic voltammetry (Pt / C electrode) and negative shift (Pt Ru electrode) respectively, and the corresponding peak current showed a decreasing trend Especially Pt / C electrodes.) The poisoning of carbon monoxide causes a significant decrease in the electrocatalytic activity of pure platinum-ruthenium and its effect is irreversible.