期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 30, 页码 10218-10220出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja102931d
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资金
- Department of Energy [DE-FG02-87ER45298]
- Energy Materials Center at Cornell
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001086]
- U.S. Department of Energy (DOE) [DE-FG02-87ER45298] Funding Source: U.S. Department of Energy (DOE)
The current materials used in proton-exchange membrane fuel cells (PEMFCs) are not sufficiently durable for commercial deployment. One of the major challenges lies in the development of an inexpensive, efficient, and CO-tolerant anode catalyst. Here we report the unique CO-tolerant property of Pt nanoparticles supported on Ti0.7W0.3O2. The Ti0.7W0.3O2 nanoparticles (50 nm) were synthesized via a sol-gel process and platinized using an impregnation-reduction technique. Electrochemical studies of Pt/Ti0.7W0.3O2 show unique CO-tolerant electrocatalytic activity for hydrogen oxidation compared to commercial E-TEK PtRu/C catalysts. Differential electrochemical mass spectrometry measurements show the onset potential for CO oxidation on Pt/Ti0.7W0.3O2 to be below 0.1 V (vs RHE). Pt/Ti0.7W0.3O2 is a promising new anode catalyst for PEMFC applications.
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