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电化学  2013 

Pt/PMo12/PEDOT/GC电极的制备及其甲醇电氧化性能

, PP. 164-168

Keywords: 聚3,4-乙烯二氧噻吩,磷钼酸,燃料电池,阳极催化剂,甲醇电氧化

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Abstract:

将磷钼酸(PMo12)修饰到电化学聚合制得的聚3,4-乙烯二氧噻吩(PEDOT)(PEDOT/GC)膜表面(PMo12/PEDOT/GC),随后电沉积Pt得Pt/PMo12/PEDOT/GC电极.研究了PMo12和PEDOT对电极氧化甲醇性能的影响.结果表明,PMo12改变了电极上负载Pt的形态和结构,导致Pt纳米结构边缘产生尖锐的刺状结构.Pt/PMo12/PEDOT/GC和Pt/PEDOT/GC电极有较好的甲醇氧化电催化活性,而前者尤佳.PEDOT不仅提高甲醇氧化的电流,还使甲醇的起始氧化电位负移.进一步修饰PMo12后,可明显增大甲醇氧化的电流.

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