Thermal Treatment Effects on Pt/C Electrocatalysis

摘要：

Pt/C catalyst is produced by precipitation transformation method. The effect of thermal treatment on the morphological and electrocatalysis characteristics of catalyst is studied. Thermal treatmentleads to the growth of Pt particles. Low temperature treatment has few influence, but after thermal treatment at 500℃, the particle size grows up firom 2.8nm to 5.4nm, and the specific surface area decreases from 66m2/g to 31m2/g. After low temperature thermal treatment in H2, the specific suxface area increases, and the electrocatalysis activity on hydrogen oxidation is enhanced. The electrocatalysis performance on hydrogen oxidation is not only related to the specific surface area of catalysts, but also thestate of Pt oxidized.

关键词： Pt/C Electrocatalysis Fuel cell Thermal treatment

作者: Zhang Xiangjun Lu Shigang Meng Qinghu Li Weiwei

作者单位: General Research Institute for Non-ferrous Metals,Beijing 1O0088,China

会议类型: 国际会议

会议名称: 第三届国际贵金属会议(The Third International Conference on Precious Metals)

会议地点: 西安

会议语种:英文

页码: 41-47

在线出版日期: 2008-06-01（万方平台首次上网日期，不代表论文的发表时间）