Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 147, Issue -, Pages 518-525Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2013.09.020
Keywords
Methanol electrooxidation; Ordered mesoporous carbon (OMC); Tungsten carbide; Pt@WC/OMC
Funding
- National Natural Science Foundation of China [21276290, 21107145]
- Sino-Greek Science and Technology Cooperation Project [2013DFG62590]
- Key Laboratory of Fuel Cell Technology of Guangdong Province
- Undergraduate Program for Physics Base from School of Physics and Engineering, Sun Yat-sen University
Ask authors/readers for more resources
The current anode materials used for direct methanol fuel cells (DMFCs) are expensive and not sufficiently durable for commercial development. One of the major challenges lies in the development of an inexpensive, efficient and stable anode catalyst. In the present manuscript ordered mesoporous tungsten carbide/carbon composites promoted Pt (Pt@WC/OMC) catalyst with high activity and stability for methanol electrooxidation is reported. WC/OMC nanomaterials have been synthesized by combing the hydrothermal reaction and the hard-template method and they have been platinized by a pulse microwave assisted polyol technique. The combination of high surface area, ordered mesopores, the synergistic effect and CO-tolerant ability of WC and well dispersed Pt nanoparticles provide Pt@WC/OMC with high activity, desirable stability, and CO-tolerance toward methanol electrooxidation. Compared with the commercial PtRu@C (40 wt.% Pt, 20 wt.% Ru) catalyst, Pt@WC/OMC demonstrates longer stability as well as higher specific mass activity for methanol electrooxidation by a factor of 1.1 (per mg Pt) and 1.7 (per mg noble metal). Experimental results have proved that Pt@WC/OMC is a promising anode catalyst for DMFCs applications. (C) 2013 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available