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电化学  2011 

微乳法合成Pt/C、PtIr/C催化剂及其电化学性能表征

, PP. 393-398

Keywords: 载体,微乳法,负载型催化剂,燃料电池,一体式燃料电池

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Abstract:

以碳纳米粉(XC-72R)作为载体,采用三种不同方法合成Pt/C负载型催化剂。利用X射线衍射(XRD)、透射电镜(TEM)、循环伏安法(CV)、恒电位测试(Potentiostatic)以及线性极化分析(Potentiodynamicpolarization)等手段进行催化剂表征,结果表明,微乳法制得的负载型催化剂,活性组分的颗粒尺寸为5~10nm,且均匀地分散在载体表面,其电化学性能良好。而微乳法进一步制备的含不同比例的负载型的PtIr/C催化剂,其中以Pt85Ir15表现出更为较好的电化学综合性能。

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