Carbon-supported Pd nanocatalyst modified by non-metal phosphorus for the oxygen reduction reaction |
| |
| Authors: | Lifeng Cheng Zhonghua Zhang Wenxin Niu Guobao Xu Liande Zhu |
| |
| Affiliation: | 1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, PR China;2. School of Chemistry, Northeast Normal University, 5268 Renmin Street, Changchun, Jilin 130024, PR China;3. Graduate University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100864, PR China |
| |
| Abstract: | A carbon-supported palladium catalyst modified by non-metal phosphorus (PdP/C) has been developed as an oxygen reduction catalyst for direct methanol fuel cells. The PdP/C catalyst was prepared by the sodium hypophosphite reduction method. The as-prepared Pd nanoparticles have a narrow size distribution with an average diameter of 2 nm. Energy dispersive X-ray analysis (EDX), X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) results indicate that P enters into the crystal lattice of Pd and forms an alloy. The PdP/C catalyst has an oxygen reduction reaction (ORR) activity comparable to the commercial Pt/C catalyst and a higher activity than the Pd/C catalyst synthesized by the conventional NaBH4 reduction method. Its high catalytic activity can be attributed to its small size, lower relative crystallinity, and the formation of PdP alloy. |
| |
| Keywords: | Catalyst Fuel cell Oxygen reduction reaction Phosphorus Palladium Sodium hypophosphite reduction method |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
