采用化学沉淀法由HCl-Na2WO4制备WO3-C复合载体,通过微波辅助乙二醇还原法制备Pt/WO3-C复合载体催化剂.研究了WO3含量以及热处理温度对Pt/WO3-C催化剂性能的影响,采用X射线衍射、透射电子显微镜和能量散射光谱对Pt/WO3-C的物化结构和组成进行了表征.结果表明,WO3的最佳含量为10wt％,N2气氛中热处理适宜温度为250℃.所制备的Pt/WO3-C催化剂中WO3以单斜晶型存在,Pt颗粒的平均粒径为2.77 nm.通过循环伏安法和单体质子交换膜燃料电池极化曲线测试了Pt/WO3-C催化剂的电化学性能,证实了Pt与WO3之间存在协同催化作用,与Pt/C催化剂相比,Pt/WO3-C的催化活性和稳定性都有明显改善.
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