Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 39, Pages 19696-19701Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta05372b
Keywords
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Funding
- Army Research Office through MURI [W911NF-11-1-0362]
- U.S. Department of Defense: U.S. Air Force Office of Scientific Research [FA9550-12-1-0035]
- NNSF of China [51572125]
- RFDP [20123219130003]
- Fundamental Research Funds for the Central Universities [30920140122003]
- PAPD of Jiangsu
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The design and construction of nanostructured electrode catalysts with high activity at low cost are crucial elements in fuel cell technologies. Here, we demonstrate a combined hydrothermal self-assembly, freeze-drying, and thermal annealing approach for the fabrication of a hybrid catalyst made from nanosized Pt particles and three-dimensional (3D) nitrogen-doped graphene nanoribbons (N-GNRs). The resulting 3D architecture possesses a large surface area, interconnected porous networks, uniform nitrogen distribution, extremely small sizes of PtNPs and good electrical conductivity, which are highly desirable for electrocatalysis of the methanol oxidation reaction. As a consequence, remarkable electrocatalytic properties including exceptional electrocatalytic activity, strong poison tolerance as well as superior long-term stability are achieved for the Pt/N-GNR architecture, all of which outperform those observed for Pt/Vulcan XC-72 (Pt/C), Pt/carbon nanotube (Pt/CNT) and Pt/undoped GNR (Pt/GNR) catalysts.
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