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

Authors

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

Corresponding Author

You-jun FAN(youjunfan@mailbox.gxnu.edu.cn)

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.

Graphical Abstract

Keywords

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

DOI Link

https://doi.org/10.61558/2993-074X.2109

Publication Date

2013-04-28

Online Available Date

2012-05-20

Revised Date

2012-05-10

Received Date

2012-03-28

Recommended Citation

Jing-hua MA, Rui-xiang WANG, Yi-liang TAN, Shan-shan WANG, Yan-qin ZHANG, You-jun FAN. Preparation and Methanol Electrooxidation of Pt/PMo₁₂/PEDOT/GC Electrodes[J]. Journal of Electrochemistry, 2013 , 19(2): 164-168.
DOI: 10.61558/2993-074X.2109
Available at: https://jelectrochem.xmu.edu.cn/journal/vol19/iss2/7