Preparation of carbon-supported core@shell PdCu@PtRu nanoparticles for methanol oxidation

✍ Scribed by Rongfang Wang; Hao Li; Hanqing Feng; Hui Wang; Ziqiang Lei

• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 889 KB
• Volume: 195
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2009.08.055

✦ Synopsis

In this study, a low-cost and high performance catalyst with core-shell structure of PdCu@PtRu/C for methanol oxidation is prepared by a two-step replacement reaction. Transmission electron microscopy (TEM) and X-ray diffraction (XRD) examinations show that the composite catalyst particles distribution is quite homogeneous and has a high surface area. The Pt mass activity of this catalyst is about 15 and 3.4 times as large as those of the Pt/C and PtRu/C catalysts, respectively. High electrocatalytic activities could be attributed to the synergistic effect between PtRu and PdCu.