期刊
JOURNAL OF POWER SOURCES
卷 375, 期 -, 页码 277-290出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpowsour.2017.08.062
关键词
Reversible alkaline fuel cells; Electrolyzers; Oxygen reduction; Oxygen evolution; Bifunctional catalysts; Nanocomposites
资金
- University at Buffalo
- National Science Foundation [CBET-1604392]
- U.S. Department of Energy, Fuel Cell Technologies Office (FCTO) Incubator Program [DE-EE000696]
- Guangdong Natural Science Foundation [2015A030313545]
- Shenzhen Science and Technology Research Grant [JCYJ20150324140036855]
- Directorate For Engineering [1604392] Funding Source: National Science Foundation
A reversible fuel cell (RFC), which integrates a fuel cell with an electrolyzer, is similar to a rechargeable battery. This technology lies on high-performance bifunctional catalysts for the oxygen reduction reaction (ORR) in the fuel cell mode and the oxygen evolution reaction (OER) in the electrolyzer mode. Current catalysts are platinum group metals (PGM) such as Pt and Ir, which are expensive and scarce. Therefore, it is highly desirable to develop PGM-free catalysts for large-scale application of RFCs. In this mini review, we discussed the most promising nanocarbon/oxide composite catalysts for ORR/OER bifunctional catalysis in alkaline media, which is mainly based on our recent progress. Starting with the effectiveness of selected oxides and nanocarbons in terms of their activity and stability, we outlined synthetic methods and the resulting structures and morphologies of catalysts to provide a correlation between synthesis, structure, and property. A special emphasis is put on understanding of the possible synergistic effect between oxide and nanocarbon for enhanced performance. Finally, a few nano composite catalysts are discussed as typical examples to elucidate the rules of designing highly active and durable bifunctional catalysts for RFC applications. (C) 2017 Elsevier B.V. All rights reserved.
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