A highly stable TiB2-supported Pt catalyst for polymer electrolyte membrane fuel cells |
| |
| Authors: | Shibin Yin Shichun Mu Mu PanZhengyi Fu |
| |
| Affiliation: | a State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, PR China
b Low Carbon Energy Institute, China University of Mining and Technology, Xuzhou 221116, PR China |
| |
| Abstract: | Pt nanoparticles supported on TiB2 conductive ceramics (Pt/TiB2) have been prepared through a liquid reduction method, where the TiB2 surfaces are stabilized with perfluorosulfonic acid. The prepared Pt/TiB2 catalyst is characterized with X-ray diffraction (XRD) and TEM techniques, and a rotating disk electrode (RDE) apparatus. The Pt nanoparticles are found to uniformly disperse on the surface of the TiB2 particles with narrow size distribution. The electrochemical stability of Pt/TiB2 is evaluated and found highly electrochemically stable compared to a commercial Pt/C catalyst. Meanwhile, the catalyst also shows comparable performance for oxygen reduction reaction (ORR) to the Pt/C. The mechanism of the remarkable stability and comparable activity for ORR on Pt/TiB2 is also proposed and discussed. |
| |
| Keywords: | Catalysts TiB2 Perfluorosulfonic acid Stability Polymer electrolyte membrane fuel cells |
| 本文献已被 ScienceDirect 等数据库收录！ |
