Pt/PMo12/PEDOT/GC电极的制备及其甲醇电氧化性能

doi:10.61558/2993-074X.2109

电化学（中英文） ›› 2013, Vol. 19 ›› Issue (2): 164-168. doi: 10.61558/2993-074X.2109

Pt/PMo₁₂/PEDOT/GC电极的制备及其甲醇电氧化性能

马静华，王睿翔，谭一良，王珊珊，张艳勤，樊友军^*

广西师范大学药用资源化学与药物分子工程教育部重点实验室，化学化工学院，广西桂林 541004

收稿日期:2012-03-28 修回日期:2012-05-10 出版日期:2013-04-28 发布日期:2012-05-20
通讯作者: 樊友军 E-mail:youjunfan@mailbox.gxnu.edu.cn
基金资助:
广西自然科学基金(No. 0991093)、广西教育厅科研项目(No. 201012MS024)、广西自然科学基金创新团队项目(No. 2010GXNSFF013001)和广西研究生教育创新计划资助

Preparation and Methanol Electrooxidation of Pt/PMo₁₂/PEDOT/GC Electrodes

MA Jing-hua, WANG Rui-xiang, TAN Yi-liang, WANG Shan-shan, ZHANG Yan-qin, FAN You-jun^*

Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources (Ministry of Education of China), College of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, Guangxi, China

Received:2012-03-28 Revised:2012-05-10 Published:2013-04-28 Online:2012-05-20
Contact: FAN You-jun E-mail:youjunfan@mailbox.gxnu.edu.cn

摘要/Abstract

摘要： 将磷钼酸（PMo₁₂）修饰到电化学聚合制得的聚3,4-乙烯二氧噻吩（PEDOT）（PEDOT/GC）膜表面（PMo₁₂/PEDOT/GC），随后电沉积Pt得Pt/PMo₁₂/PEDOT/GC电极. 研究了PMo₁₂和PEDOT对电极氧化甲醇性能的影响. 结果表明，PMo₁₂改变了电极上负载Pt的形态和结构，导致Pt纳米结构边缘产生尖锐的刺状结构. Pt/PMo₁₂/PEDOT/GC和Pt/PEDOT/GC电极有较好的甲醇氧化电催化活性，而前者尤佳. PEDOT不仅提高甲醇氧化的电流，还使甲醇的起始氧化电位负移. 进一步修饰PMo₁₂后，可明显增大甲醇氧化的电流.

关键词: 聚3,4-乙烯二氧噻吩, 磷钼酸, 燃料电池, 阳极催化剂, 甲醇电氧化

Abstract: Modification of phosphomolybdic acid (PMo₁₂) on poly(3,4-ethylenedioxythiophene) (PEDOT) film (PEDOT/GC) obtained through the electrochemical polymerization was performed using adsorption method (PMo₁₂/PEDOT/GC), followed by electrodepositing Pt on PMo₁₂/PEDOT/GC to prepare Pt/PMo₁₂/PEDOT/GC electrode. Effects of PMo₁₂ and PEDOT on the methanol oxidation performance of electrode were investigated. Results showed that PMo₁₂ obviously changed the morphology and structure of Pt loaded on the electrode, leading to the formation of sharp thorns at the edge of Pt nanostructures. Cyclic voltammetry and chronoamperometry data demonstrated that the catalytic activities of methanol electrooxidation on the Pt/PMo₁₂/PEDOT/GC and Pt/PEDOT/GC electrodes were higher than that on Pt/C, and the former exhibited the best performance. It was found that the presence of PEDOT not only increased the current, but also lowered the onset potential towards methanol oxidation. After further modification of PMo₁₂, the current of methanol oxidation was significantly increased, while the onset potential of methanol oxidation remained unaffected.

Key words: poly(3,4-ethylenedioxythiophene), phosphomolybdic acid, fuel cells, anode catalysts, methanol electrooxidation

中图分类号:

O646

马静华, 王睿翔, 谭一良, 王珊珊, 张艳勤, 樊友军. Pt/PMo₁₂/PEDOT/GC电极的制备及其甲醇电氧化性能[J]. 电化学（中英文）, 2013, 19(2): 164-168.

MA Jing-hua, WANG Rui-xiang, TAN Yi-liang, WANG Shan-shan, ZHANG Yan-qin, FAN You-jun. Preparation and Methanol Electrooxidation of Pt/PMo₁₂/PEDOT/GC Electrodes[J]. Journal of Electrochemistry, 2013, 19(2): 164-168.

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Pt/PMo₁₂/PEDOT/GC电极的制备及其甲醇电氧化性能

Preparation and Methanol Electrooxidation of Pt/PMo₁₂/PEDOT/GC Electrodes

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