Fabrication of Pd–Ni–P Metallic Glass Nanoparticles and Their Application as Highly Durable Catalysts in Methanol Electro-oxidation

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• 作者：Ming Zhao ; Katsuhiro Abe ; Shin-ichi Yamaura ; Yoshinori Yamamoto ; Naoki Asao
• 刊名：Chemistry of Materials
• 出版年：2014
• 出版时间：January 28, 2014
• 年：2014
• 卷：26
• 期：2
• 页码：1056-1061
• 全文大小：390K
• ISSN：1520-5002

文摘

We report the chemical fabrication of metallic glass nanoparticles (MG-NPs). Using commercially available Pd, Ni, and P precursors, size-controlled amorphous Pd鈥揘i鈥揚 NPs were obtained by a one-pot solvothermal synthesis procedure. Differential scanning calorimetry identified typical MG properties of the unsupported Pd鈥揘i鈥揚 NPs with a wide supercooling region of 55 K (602鈥?57 K). Notably, the supported MG-NPs showed remarkable catalytic properties in methanol electro-oxidation in an alkaline medium. After 400 cyclic voltammetry cycles, the loss of current density was only 3.5% when Pd鈥揘i鈥揚 NPs on Vulcan XC-72 were used as a catalyst. This catalytic durability is outstanding compared to those of many other Pd- or Pt-based nanocatalysts, including the recently reported precious Pt鈥揚d nanomaterials. These results indicate the potential use of Pd-based MG-NPs as fuel cell catalysts.