甲酸燃料电池阳极催化剂 Pd/WO3-CNTs 的合成方法对比及其催化性能研究

摘要

采用溶胶凝胶法和水热合成法合成了载体 WO3-CNTs，并进一步制备了20%Pd/WO3-CNTs-A（B）催化剂，对比了两种方法合成的催化剂对甲酸电氧化催化性能。XRD 结果表明两种催化剂均由单斜 WO3和面心立方的 Pd 晶粒组成。溶胶凝胶法制备的载体其 WO3分散更为均匀，有利于 WO3物种对 Pd 的甲酸脱氢这种促进作用，因此该法合成的20%Pd/WO3-CNTs 催化剂具有更好的催化性能。%WO3 modified carbon nanotubes were prepared by sol-gel method and hydrothermal synthesis, and then their supported palladium catalysts were prepared. The results show that electrocatalytic performance of Pd/WO3-CNTs-A catalysts prepared by sol-gel method for formic acid oxidation significantly enhances because WO3 particles disperse on CNTs more uniformly.