alexa Synthesis And Characterization Of Nano-crystalline Tungsten Carbide Supported Platinum For Gas Diffusion Electrode Catalyst
ISSN: 2157-7439

Journal of Nanomedicine & Nanotechnology
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4th International Conference on Nanotek & Expo
December 01-03, 2014 DoubleTree by Hilton Hotel San Francisco Airport, USA

Xuanhui Qu, Zhiwei Liu, Qi Wan, Ping Li, Fuqiang Zhai and Alex A Volinsky
Accepted Abstracts: J Nanomed Nanotechnol
DOI: 10.4172/2157-7439.S1.019
A high active catalyst for gas diffusion electrode of Li-air fuel cell was prepared from nano-crystalline powder mixture of tungsten carbide and platinum. The WC nanoparticles were made with a low-temperature combustion synthesiscarbonization process. WC/Pt mixture was obtained by adding H2PtCl6 solution and sodium borohydride solution into a deionized water dispersed with WC powder. The WC/Pt mixtures are characterized by XRD, FESEM and EDS. The electrochemical catalytic activity of WC/Pt electrode is characterized by cyclic voltammetry (CV) in alkaline medium. FESEM analysis shows that the WC/Pt catalyst is composed of well-dispersed nanometer Pt clusters and WC nanoparticles. CV measurement indicates that WC/Pt as electro-catalyst for oxygen reduction reaction (ORR) shows high activity and exhibits a synergetic effect compared with that of either WC or Pt individually.
Xuanhui Qu is the Cheung Kong Scholars Program Professor in Materials at University of Science and Technology Beijing. He obtained his PhD degrees in Materials Science and Engineering from Central South University in 1992. Now he is the standing committee member of Chinese Materials Research Society and the President of Powder Metallurgy Branch of Chinese Society for Metals. His publication list exceeds 380 articles covering advanced materials and processing. He has co-authored 4 books and got over 70 patents. His research and teaching focus is on powder metallurgy and particular materials.
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