Journal
SMALL
Volume 13, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201603013
Keywords
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Categories
Funding
- Fundamental Research Funds for the Central Universities [2014B13514, 2242016K41039, MTEC-2015M03, NJ20150026]
- China Postdoctoral Science Foundation [2015M580387, 2016T90414]
- Natural Science Foundation of Jiangsu Province [BK20160871]
- Natural Science Foundation of China [11674052]
- U.S. Department of Energy, Office of Science, Basic Energy Science, Materials Sciences and Engineering Division
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Although direct methanol fuel cell offers high energy use efficiency and low pollution emission, the lack of suitable electrode materials poses a great challenge to its commercial application. Herein, a facile and scalable approach is developed to fabricate a hybrid electrocatalyst consisting of strongly coupled worm-shape Pt nanocrystals and nitrogen-doped low-defect graphene (N-LDG) sheets. Interestingly, it is found that the formation of Pt nanoworms (NWs) is induced by the N atoms in the high-quality carbon matrix, which also allows the integration of their respective structural advantages and leads to a strong synergetic coupling effect. As a result, the obtained Pt NW/N-LDG catalyst exhibits an extremely high mass activity of 1283.1 mA mg(-1) toward methanol oxidation reaction, accompanied by reliable long-term stability and good antipoisoning ability, which are dramatically enhanced as compared with conventional Pt nanoparticle catalysts dispersed on undoped LDG, reduced graphene oxide, and commercial carbon black supports.
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