Phosphorictungstenic Acid-Pt/C cathodic catalyst in direct methanol fuel cell

被引：0
|
作者：
Lv, Yanzhuo
Lu, Tianhong
Liu, Changpeng
Xing, Wei [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, Changchun 130022, Peoples R China
[2] Nanjing Normal Univ, Coll Chem & Environm Sci, Nanjing 210097, Peoples R China
来源：
JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS | 2005年 / 8卷 / 04期
关键词：
oxygen reduction reaction; phosphorictungstenic acid; Pt; direct methanol fuel cell;
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
It was reported that the carbon supported Pt and phosphorictungstenic acid (PWA) (Pt-PWA/C) catalysts were prepared with mixing the carbon supported Pt (Pt/C) catalyst and PWA solution. It was found that because PWA covered on the Pt surface possesses the oxygen affinity and the ability for inhibiting the permeation of methanol the Pt-PWA/C catalyst can increase the electrocatalytic activity for the oxygen reduction reaction (ORR) and inhibit the electrooxidation of methanol comparing with the Pt/C catalyst. When the weight ratio of PWA and Pt/C in the PWA-Pt/C catalyst is 1, the composite catalyst showed the best performance. Comparing with the Pt/C catalyst, the reduction current of oxygen is increased by about 38% and the oxidation current of methanol is decreased by about 76% at the Pt-PWA/C electrode with the best weight ratio. Therefore, the Pt-PWA/C with the suitable weight ratio can be used as a cathodic catalyst in the direct methanol fuel cell (DMFC).
引用
收藏
页码：251 / 256
页数：6
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