Catalysts | |
Oxygen Reduction Reaction Activity and Durability of Pt Catalysts Supported on Titanium Carbide | |
Morio Chiwata1  Katsuyoshi Kakinuma2  Mitsuru Wakisaka2  Makoto Uchida2  Shigehito Deki2  Masahiro Watanabe2  Hiroyuki Uchida2  | |
[1] Special Doctoral Program for Green Energy Conversion Science and Technology, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, 4 Takeda, Kofu 400-8510, Japan; E-Mail:;Fuel Cell Nanomaterials Center, University of Yamanashi, 4 Takeda, Kofu 400-8510, Japan; E-Mails: | |
关键词: titanium carbide; polymer electrolyte fuel cell; cathode catalyst; oxygen reduction reaction; corrosion-resistant catalyst support; | |
DOI : 10.3390/catal5020966 | |
来源: mdpi | |
【 摘 要 】
We have prepared Pt nanoparticles supported on titanium carbide (TiC) (Pt/TiC) as an alternative cathode catalyst with high durability at high potentials for polymer electrolyte fuel cells. The Pt/TiC catalysts with and without heat treatment were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM). Hemispherical Pt nanocrystals were found to be dispersed uniformly on the TiC support after heat treatment at 600 °C in 1% H2/N2 (Pt/TiC-600 °C). The electrochemical properties (cyclic voltammetry, electrochemically active area (ECA), and oxygen reduction reaction (ORR) activity) of Pt/TiC-600 °C and a commercial Pt/carbon black (c-Pt/CB) were evaluated by the rotating disk electrode (RDE) technique in 0.1 M HClO4 solution at 25 °C. It was found that the kinetically controlled mass activity for the ORR on Pt/TiC-600 °C at 0.85 V (507 A g−1) was comparable to that of c-Pt/CB (527 A g−1). Moreover, the durability of Pt/TiC-600 °C examined by a standard potential step protocol (
【 授权许可】
CC BY
© 2015 by the authors; licensee MDPI, Basel, Switzerland.
【 预 览 】
Files | Size | Format | View |
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RO202003190010501ZK.pdf | 732KB | download |