Pd nanoparticles supported on WO3/C hybrid material as catalyst for oxygen reduction reaction

✍ Scribed by Zhonghua Zhang; Xiaogang Wang; Zhiming Cui; Changpeng Liu; Tianhong Lu; Wei Xing

• Book ID: 104025273
• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 656 KB
• Volume: 185
• Category: Article
• ISSN: 0378-7753
• DOI: 10.1016/j.jpowsour.2008.07.044

✦ Synopsis

Pd nanoparticles supported on WO 3 /C hybrid material have been developed as the catalyst for the oxygen reduction reaction (ORR) in direct methanol fuel cells. The resultant Pd-WO 3 /C catalyst has an ORR activity comparable to the commercial Pt/C catalyst and a higher activity than the Pd/C catalyst prepared with the same method. Based on the physical and electrochemical characterizations, the improvement in the catalytic performance may be attributed to the small particle sizes and uniform dispersion of Pd on the WO 3 /C, the strong interaction between Pd and WO 3 and the formation of hydrogen tungsten bronze which effectively promote the direct 4-electron pathway of the ORR at Pd.