Highly durable graphene nanoplatelets supported Pt nanocatalysts for oxygen reduction
We report graphene nanoplatelets (GNP), 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.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 982951
- Report Number(s):
- PNNL-SA-69731; 24990; EB4209000
- Journal Information:
- Journal of Power Sources, 195(15):4600-4605, Journal Name: Journal of Power Sources, 195(15):4600-4605 Journal Issue: 7 Vol. 195; ISSN 0378-7753
- Country of Publication:
- United States
- Language:
- English
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