Pd/TiC-C催化剂对甲酸氧化的电催化性能

研究了TiC和C作混合载体的Pd(Pd/TiC-C)催化剂对甲酸氧化的电催化性能。发现Pd/TiC-C催化剂对直接甲酸燃料电池(DFAFC)中甲酸氧化的电催化性能要优于Pd/C催化剂。而且，Pd/TiC-C催化剂的电催化性能与C和TiC的质量比有关，当质量比为2时，Pd/TiC-C催化剂对甲酸氧化的电催化活性和稳定性最好，甲酸在C和TiC的质量比为2的Pd/TiC-C催化剂电极上的氧化峰峰电位为0.164 V，比在Pd/C催化剂电极上负移12 mV，峰电流密度为23.08 mA/cm2，比在Pd/C催化剂电极上高约42％。

Electrocatalytic Performance of Pd Catalyst Supported on Composite Supporter of TiC and Carbon for Oxidation of Formic Acid

The electrocatalytic performance of the Pd/TiC-C catalysts for the oxidation of formic acid was investigated. It was found that the electrocatalytic performance of the Pd/TiC-C catalysts for the oxidation of formic acid in the direct formic acid fuel cell is better than that of Pd/C catalyst. Furthermore, the electrocatalytic performance of the Pd/TiC-C catalysts is related to the weight ratio of C and TiC. When the weight ratio is 2 the electrocatalytic activity and stability of Pd/TiC-C catalyst is best. The peak potential of the oxidation of formic acid at the Pd/TiC-C catalyst with weight ratio of 2 is located at 0.164 V. which is 12 mV more negative than that at the Pd/C catalyst electrode. The peak current density is 23.08 mA/cm2, which is 42% larger than that at the Pd/C catalyst electrode.