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Citation: YANG Gai-Xiu, DENG Ling-Juan, TANG Ya-Wen, LU Tian-Hong. Promoting Action of Phosphotungstic Acid on Electrooxidation of Fomic Acid at Carbon Supported Pt Catalyst[J]. Chinese Journal of Applied Chemistry, ;2009, 26(6): 1476-1479. shu

Promoting Action of Phosphotungstic Acid on Electrooxidation of Fomic Acid at Carbon Supported Pt Catalyst

1.
a Jiangsu Key Laboratory of Biofunctional Materials, School of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097;
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b Department of Chemistry, Xianyang Normal University, Xianyang

Corresponding author: LU Tian-Hong,
Received Date: 22 December 2008
Available Online: 29 April 2009
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)资助项目 (20703043,20873065)

The promoting action of phosphotungstic acid(PWA) in the electrolyte on the oxidation of formic acid at the carbon supported Pt(Pt/C) catalyst was investigated via EDS,XRD and electrochemical methods.It was found that PWA can increase not only the electrocatalytic activity of the Pt/C catalyst electrode for the oxidation of formic acid,but also the electrocatalytic stability.The promoting action is related to the PWA concentration.When the PWA concentration is 0.10 g/L,the promoting action is the best.This is mainly because when the PWA concentration is too high,overfull adsorbed PWA would partially cover the active points of the Pt/C catalyst,leading to the decrease in the electrocatalytic performance of the Pt/C catalyst.
- direct formic acid fuel cell,
- carbon supported Pt catalyst,
- phosphotungstic acid,
- promoting action
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