期刊
JOURNAL OF POWER SOURCES
卷 195, 期 15, 页码 4600-4605出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2010.02.044
关键词
Graphene nanoplatelets; Polymer electrolyte membrane fuel cell; Oxygen reduction; Durability; Carbon nanotubes
资金
- U.S. DOE [DE-AC05-76L01830]
- DOE's Office of Biological and Environmental Research
We report graphene nanoplatelets (GNPs), which exhibit the advantages of both single-layer graphene and highly graphitic carbon, as a durable alternative support material for Pt nanoparticles for oxygen reduction in fuel cells. Pt nanoparticles are deposited on poly(diallyldimethylammonium chloride) (PDDA)-coated GNP, and characterized with transmission electron microscopy. X-ray diffraction, Raman spectra, and electrochemical tests. Pt/GNP exhibits greatly enhanced electrochemical durability (2-3 times that of Pt/CNT and commercial Etek Pt/C). These are attributed to the intrinsic high graphitization degree of GNP and the enhanced Pt-carbon interaction in Pt/GNP. If considering that GNP can be easily mass produced from graphite. GNP is a promising, low-cost, and durable electrocatalyst support for oxygen reduction in fuel cells. (C) 2010 Elsevier B.V. All rights reserved.
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