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Citation: CAO Shuang, WANG Yan-En, LU Tian-Hong, LIU Chang-Peng, XING Wei, TANG Ya-Wen. Effect of Fe State on Electrocatalytic Activity of Pd-Fe/C Catalyst for Oxygen Reduction[J]. Chinese Journal of Applied Chemistry, ;2009, 26(5): 613-615. shu

Effect of Fe State on Electrocatalytic Activity of Pd-Fe/C Catalyst for Oxygen Reduction

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a College of Chemistry and Environmental Science, Nanjing Normal University, Nanjing 210097;
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b College of Sciences, Agricultural University of Hebei, Baoding;
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c Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun

Corresponding author: TANG Ya-Wen,
Received Date: 15 April 2008
Available Online: 24 July 2008
Fund Project: 科技部“八六三”计划项目(2006AA05Z137,2007AA05Z143,2007AA05Z159) (2006AA05Z137,2007AA05Z143,2007AA05Z159)国家自然科学基金(20573057,20703043) (20573057,20703043)江苏省自然科学基金(BK2006224)资助项目 (BK2006224)

In the study of direct methanol fuel cell(DMFC),issues on catalysts with high electrocatalytic performance for oxygen reduction and without electrocatalytic performance for methanol oxidation ars important.In this work,the carbon supported Pd-Fe(Pd-Fe/C) catalyst was prepared in a mixed solution of water and tetrahydrofuran.It was found that in the Pd-Fe/C catalyst,Fe existed as the alloying state and amorphous non-alloying state.The amorphous non-alloying Fe can dissolve in the acid,while the alloying Fe cannot dissolve after acid treatment.In addition,electrochemical study indicates that the Pd-Fe/C catalyst treated with acid possesses the high electrocatalytic activity for oxygen reduction and has no electrocatalytic activity for methanol oxidation.These results indicate that the alloying Fe could effectively increase the electrocatalytic activity of Pd for oxygen reduction,while non-alloying Fe has no such function.Pd-Fe/C catalyst treated with acid is therefore an excellent cathodic catalyst in DMFC.
- direct methanol fuel cell,
- Pd-Fe/C catalyst,
- oxygen reduction,
- alloying
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