Highly efficient anode catalyst with a Ni@Pd Pt core–shell nanostructure for methanol electrooxidation in alkaline media
来源期刊：International Journal of Minerals Metallurgy and Materials2015年第10期
论文作者：Pei-shu Yu Chun-tao Liu Bo Feng Jia-feng Wan Li Li Chun-yu Du
文章页码：1101 - 1107
摘 要：To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells（DMFCs）, a Ni@Pd Pt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@Pd Pt 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@Pd Pt electrocatalyst is approximately 5.6 nm. The Ni@Pd Pt electrocatalyst exhibits a catalytic activity 3.36 times greater than that of Pd Pt alloys for methanol oxidation in alkaline media. The developed Ni@Pd Pt electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs.
Pei-shu Yu1，Chun-tao Liu1,2，Bo Feng1，Jia-feng Wan1，Li Li1，Chun-yu Du3
1. School of Chemistry and Materials Science,Heilongjiang University2. Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion3. School of Chemical Engineering and Technology,Harbin Institute of Technology
摘 要：To enhance the electrocatalytic activity of anode catalysts used in alkaline-media direct methanol fuel cells（DMFCs）, a Ni@Pd Pt electrocatalyst was successfully prepared using a three-phase-transfer method. The Ni@Pd Pt 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@Pd Pt electrocatalyst is approximately 5.6 nm. The Ni@Pd Pt electrocatalyst exhibits a catalytic activity 3.36 times greater than that of Pd Pt alloys for methanol oxidation in alkaline media. The developed Ni@Pd Pt electrocatalyst offers a promising alternative as a highly electrocatalytically active anode catalyst for alkaline DMFCs.
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