Enhanced electrocatalytic oxidation of methanol on Pd/polypyrrole–graphene in alkaline medium |
| |
| Authors: | Yanchun Zhao Lu Zhan Jianniao Tian Sulian Nie Zhen Ning |
| |
| Affiliation: | 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, Yucai Road, No. 15, Guilin, Guangxi 541004, PR China |
| |
| Abstract: | The new electrocatalyst of Pd nanoparticles supported on polypyrrole-functionalized graphene (Pd/PPy–graphene) was reported. Microstructure, morphology and crystallinity of the synthesized materials were investigated by Fourier transform infrared spectrometry (FT-IR), scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The elements of the composite were characterized using energy dispersive X-ray spectroscopy (EDS). The results showed that the polypyrrole-wrapped graphene support successfully discrete Pd nanoparticles with the crystallite size of about 6 nm. Catalyst activity for methanol electro-oxidation in fuel cells was investigated by cyclic voltammetry (CV) and chronoamperometry. The fundamental electrochemical test results indicated that the electrocatalytic activity of Pd/PPy–graphene is much better than that of commercial catalyst for methanol oxidation. |
| |
| Keywords: | Graphene Polypyrrole Pd nanoparticles Alkaline direct methanol fuel cells |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
