期刊
JOURNAL OF POWER SOURCES
卷 342, 期 -, 页码 273-278出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2016.12.054
关键词
Platinum; Surface defects; Networks of connected Pt nanoparticles; Methanol oxidation
资金
- National Natural Science Foundation of China [21171163, 21501174]
- Science and Technology Planning Project of Fujian Province [2014H2008]
- strategic Priority Research Program of the Chinese Academy of Sciences [XDA09010402]
The high cost and short lifetime of the Pt-based anode catalyst for methanol oxidation reaction (MOR) hamper the widespread commercialization of direct methanol fuel cell (DMFC). Therefore, improving the activity of Pt-based catalysts is necessary for their practical application. For the first time, we prepared networks of connected Pt nanoparticles supported on multi-walled carbon nanotubes with loading ratio as high as 91 wt% (Pt/MWCNTs). Thanks for the unique connected structure, the Pt mass activity of Pt/MWCNTs for methanol oxidation reaction is 4.4 times as active as that of the commercial Pt/C (20 wt%). When carbon support is considered, the total mass activity of Pt/MWCNTs is 20 times as active as that of the commercial Pt/C. The durability and anti-poisoning ability are also improved greatly. (C) 2016 Elsevier B.V. All rights reserved.
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