期刊
ELECTROCHIMICA ACTA
卷 290, 期 -, 页码 55-62出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.09.006
关键词
Carbon-free support; Ceria; Pt; Methanol oxidation reaction
资金
- National Natural Science Foundation of China [51472050]
- Natural Science Foundation of Fujian Province, China [2016J05033]
- Testing Funding of Fuzhou University, China [2017T002]
The inevitable corrosion of carbon support under operating condition of direct methanol fuel cells significantly undermines the activity and durability of Pt catalyst. Carbon-free materials with acceptable electronic conductivity, stability, and co-functionality are promising alternative supports. We used poly(vinylpyrrolidone) as the skeleton to prepare porous ceria for carbon-free support. The ceria has very high concentration of oxygen vacancies, which plays key roles in: i) narrowing the band gap and improving the electronic conductivity; ii) improving the catalytic performance. The better methanol electrooxidation activity and durability are achieved on the porous ceria supported Pt catalyst. (c) 2018 Elsevier Ltd. All rights reserved.
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