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Citation: JIA Yujie, TANG Yawen, CHEN Yu, ZHOU Yiming, LU Tianhong. Effect of Atomic Ratio of Pd and Pt in Carbon Supported Pd-Pt Catalyst on Its Cathodic Performance in Direct Methanol Fuel Cell[J]. Chinese Journal of Applied Chemistry, ;2011, 28(2): 224-228. doi: 10.3724/SP.J.1095.2011.00169 shu

Effect of Atomic Ratio of Pd and Pt in Carbon Supported Pd-Pt Catalyst on Its Cathodic Performance in Direct Methanol Fuel Cell

1.
Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097

Corresponding author: LU Tianhong,
Received Date: 23 March 2010
Available Online: 7 July 2010
Fund Project: 科技部"八六三"计划项目(2007AA05Z143,2007AA05Z159) (2007AA05Z143,2007AA05Z159)国家自然科学基金(20703043,20873065,21073094)资助项目 (20703043,20873065,21073094)

The electrocatalytic performance for the oxygen reduction and the methanol tolerance ability of the Pd-Pt/C catalysts with different atom ratios of Pd and Pt was investigated.It is found that when the atom ratio of Pd and Pt is increased from 20:0 to 17:3,the electrocatalytic performance of the Pd-Pt/C catalyst for the oxygen reduction is increased.Furthermore,all the Pd-Pt/C catalysts with the atom ratios in the range of 20:0~17:3 have no electrocatalytic activity for the methanol oxidation and thus possess the excellent methanol tolerance ability.When the atom ratio is increased to 16:4,the electrocatalytic performance of the Pd-Pt/C catalyst for the oxygen reduction is still increased,but the methanol tolerance ability is decreased.Thus,the Pd-Pt/C catalyst with 17:3 atom ratio possesses an excellent electrocatalytic activity for oxygen reduction and methanol tolerance ability.Therefore,it can be used as the cathodic catalyst in direct methanol fuel cell(DMFC).
- direct methnol fuel cell,
- carbon supported Pd-Pt catalyst,
- methanol tolerance ability,
- oxygen reduction,
- atom ratio
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