Highly efficient anode catalyst with a Ni@PdPt core–shell nanostructure for methanol electrooxidation in alkaline media
| Autor: | Jia-feng Wan, Chuntao Liu, Li Li, Bo Feng, Pei-shu Yu, Chun-yu Du |
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| Rok vydání: | 2015 |
| Předmět: |
Chemistry
Mechanical Engineering Inorganic chemistry Metals and Alloys Electrocatalyst Anode Catalysis chemistry.chemical_compound X-ray photoelectron spectroscopy Chemical engineering Geochemistry and Petrology Mechanics of Materials Transmission electron microscopy Materials Chemistry Methanol High-resolution transmission electron microscopy Methanol fuel |
| Zdroj: | International Journal of Minerals, Metallurgy, and Materials. 22:1101-1107 |
| ISSN: | 1869-103X 1674-4799 |
| DOI: | 10.1007/s12613-015-1173-0 |
| Popis: | To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells (DMFCs), a Ni@PdPt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@PdPt electrocatalyst was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM) techniques. The experimental results indicate that the average particle size of the core–shell-structured Ni@PdPt electrocatalyst is approximately 5.6 nm. The Ni@PdPt electrocatalyst exhibits a catalytic activity 3.36 times greater than that of PdPt alloys for methanol oxidation in alkaline media. The developed Ni@PdPt electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs. |
| Databáze: | OpenAIRE |
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