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用金属蒸气合成法制备了不同含量的Pd_n/C电极。对电极进行了金属含量、XPS、TEM、循环伏安及催化活性分析和测定。电极中金属颗粒的大小随金属含量明显变化。XPS结果表明,钯几乎全部以零价态存在。金属含量相同时,金属蒸气合成法制备的电极催化活性高于普通法制备的电极。
Different concentrations of Pd_n / C electrodes were prepared by metal vapor synthesis. The electrode was metal content, XPS, TEM, cyclic voltammetry and catalytic activity analysis and determination. The size of the metal particles in the electrode varies significantly with the metal content. XPS results show that almost all of palladium exists in the zero valence state. When the metal content is the same, the catalytic activity of the electrode prepared by the metal vapor synthesis method is higher than that prepared by the common method.