AI Article Synopsis
- - Metal-air batteries (MABs) and reversible fuel cells (RFCs) need bifunctional oxygen catalysts that can efficiently facilitate both the oxygen evolution reaction (OER) and the oxygen reduction reaction (ORR).
- - There is a challenge in finding catalysts that work well for both reactions, as a good ORR catalyst is not necessarily effective for OER, leading to the need for new types of bifunctional catalysts.
- - The review focuses on the development of composite catalysts with multiple active centers supported on highly conductive materials, aiming to create high-performance catalysts that operate at low overpotentials.
Article Abstract
Metal-air batteries (MABs) and reversible fuel cells (RFCs) rely on the bifunctional oxygen catalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). Finding efficient bifunctional oxygen catalysts is the ultimate goal and it has attracted a great deal of attention. The dilemma is that a good ORR catalyst is not necessarily efficient for OER, and vice versa. Thus, the development of a new type of bifunctional oxygen catalysts should ensure that the catalysts exhibit high activity for both OER and ORR. Composites with multicomponents for active centers supported on highly conductive matrices could be able to meet the challenges and offering new opportunities. In this Review, the evolution of bifunctional catalysts is summarized and discussed aiming to deliver high-performance bifunctional catalysts with low overpotentials.
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| http://dx.doi.org/10.1002/chem.201905346 | DOI Listing |
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