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Synthesis and characterization of Cu@Pt/C core-shell structured catalysts for proton exchange membrane fuel cell

2011; Elsevier BV; Volume: 36; Issue: 15 Linguagem: Inglês

10.1016/j.ijhydene.2011.04.224

1879-3487

Hong Zhu, Xingwang Li, Fanghui Wang,

Molecular Junctions and Nanostructures

A Cu@Pt/C catalyst was synthesized by a two-step reduction method using Vulcan XC-72R as the supporting material. Physical and electrochemical techniques were applied to investigate the structure and performance of the catalyst. X-ray diffraction (XRD) and transmission electron microscopy (TEM) examinations showed that the catalyst has a core-shell structure, the distribution of the catalyst particles is quite uniform, and the particle size ranges from 5 to 6 nm. Cyclic voltammetry (CV) and rotating disk electrode (RDE) tests confirmed the high performance of the Cu@Pt/C catalyst with the atom ratio Cu: Pt of 2.73: 1, making it a promising low-Pt catalyst for proton exchange membrane fuel cell (PEMFC).