SPE水电解高性Pd/C催化剂及最佳使用条件的研究

High performance Pd/C catalyst in solid polymer electrolyte water electrolysis and optimal using conditions

为了寻找最佳的固体聚合物电解质(SPE)水电解阴极催化剂,采用最简单的制备方法浸渍-还原法合成Pd基催化剂。通过对催化剂进行循环伏安测试、交流阻抗测试、线性极化测试和X射线衍射(XRD)、透射电子显微镜法(TEM)表征,结果发现对载体C进行酸化预处理,反应温度为90℃,p H=10时,可以获得高性能的SPE水电解阴极Pd/C催化剂。

In order to find the best SPE（solid polymer electrolyte） water electrolysis cathode catalyst,the Pd based catalyst was synthesized using the simplest method for preparation of impregnation reduction method.Surface morphology and composition of the resulting electrocatalysts were studied by means of TEM and XRD.The electrocatalytic activity of the catalyst was tested by linear polarization（LP）,chronoamperometry（CA） and electrochemical impedance spectroscopy（EIS）.The results show that the hydrogen evolution of the prepared Pd catalyst supported on activated carbon has high activity when it has an optimum p H of 10.0 and an optimum temperature of 90 ℃.