Pd-W Alloy Electrocatalysts and Their Catalytic Property for Oxygen Reduction

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• 作者：Y. Dai ; P. Yu ; Q. Huang and K. Sun
• 关键词：Alloys ; Electrocatalysts ; Fuel Cells ; Oxygen Reduction Reaction ; Palladium ; Tungsten
• 刊名：Fuel Cells
• 出版年：2016
• 出版时间：April, 2016
• 年：2016
• 卷：16
• 期：2
• 页码：165-169
• 全文大小：465K
• ISSN：1615-6854

文摘

In order to design Pt-free efficient cathode catalyst and promote the commercialization of fuel cells, different atomic ratio of carbon-supported Pd-W alloy catalysts were developed for oxygen reduction reaction (ORR). X-ray diffraction (XRD) results show the Pd-W alloys have the similar lattice characteristics to pure Pd. Transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS) results show that the Pd-W alloys disperse on the surface of carbon support uniformly. The results of the electrochemical tests show that the Pd₁₉W/C has two-fold mass activity over Pd/C, which is hopeful for the application as low-cost cathode catalyst.