Journal
SMALL
Volume 18, Issue 10, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202103747
Keywords
carbon-based nonprecious metal catalysts; metal-air (O; (2)) batteries; metal-CO; (2) batteries; metal-N; (2) batteries; recent advances
Categories
Funding
- National Natural Science Foundation of China [22102132]
- Funds for Basic Scientific Research in Central Universities [G2020KY0515]
- Youth Project of Natural Science Foundation of Shaanxi Province, China [2021JQ-087]
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This review summarizes the importance of carbon-based nonprecious metal catalysts in metal-gas batteries, introducing their advantages, synthetic strategies, and classification of active sites, and concluding with current metal-gas batteries using these catalysts.
Metal-gas batteries draw a lot of attention due to their superiorities in high energy density and stable performance. However, the sluggish electrochemical reactions and associated side reactions in metal-gas batteries require suitable catalysts, which possess high catalytic activity and selectivity. Although precious metal catalysts show a higher catalytic activity, high cost of the precious metal catalysts hinders their commercial applications. In contrast, nonprecious metal catalysts complement the weakness of cost, and the gap in activity can be made up by increasing the amount of the nonprecious metal active centers. Herein, recent work on carbon-based nonprecious metal catalysts for metal-gas batteries is summarized. This review starts with introducing the advantages of carbon-based nonprecious metal catalysts, followed by a discussion of the synthetic strategy of carbon-based nonprecious metal catalysts and classification of active sites, and finally a summary of present metal-gas batteries with the carbon-based nonprecious metal catalysts is presented. The challenges and opportunities for carbon-based nonprecious metal catalysts in metal-gas batteries are also explored.
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