期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 27, 页码 8490-8497出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201200496
关键词
electrochemistry; ion exchange; microwave chemistry; nanoparticles; oxygen-reduction reaction
资金
- National Natural Science Foundation of China [21073241, U1034003, 91022032, 21061160492]
- China National 863 Program [2009AA034400]
- State Key Laboratory of Optoelectronic Materials and Technologies [2010-ZY-4-4, 2010-ZY-4-7]
- General Motors [RD-07-295-NV508]
- Yatsen Innovative Talents Cultivation Program for Excellent Tutors
- National Basic Research Program of China [2010CB934700]
Carbide-based electrocatalysts are superior to traditional carbon-based electrocatalysts, such as the commercial Pt/C electrocatalysts, in terms of their mass activity and stability. Herein, we report a general approach for the preparation of a nanocomposite electrocatalyst of platinum and vanadium carbide nanoparticles that are loaded onto graphitized carbon. The nanocomposite, which was prepared in a localized and controlled fashion by using an ion-exchange process, was an effective electrocatalyst for the oxygen-reduction reaction (ORR). Both the stability and the durability of the Pt-VC/GC nanocomposite catalyst could be enhanced compared with the state-of-the-art Pt/C. This approach can be extended to the synthesis of other metal-carbide-based nanocatalysts. Moreover, this straightforward synthesis of high-performance composite nanocatalysts can be scaled up to meet the requirements for mass production.
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