期刊
ADVANCED MATERIALS
卷 29, 期 13, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201604103
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资金
- National Key Research and Development Program [2016YFA0202500]
- Natural Scientific Foundation of China [21422604]
The oxygen reduction reaction (ORR) is the cornerstone of various sustainable energy-conversion technologies. Metal-free nanocarbon electrocatalysts with competitive activity, enhanced durability, and satisfactory cost, have been proposed as the most promising substitute for precious-metal catalysts. However, their further development is still primarily based on trial-and-error approaches due to the controversial knowledge of critical active sites and mechanisms. Herein, the activity origins of nanocarbon-based ORR electrocatalysts are comprehensively reviewed and correlated, considering the dopants, edges, and defects. Analogously, they can effectively modify the charge/ spin distribution on the sp2-conjugated carbon matrix, leading to optimized intermediate chemisorption and facilitated electron transfer. Specific doping at defective edges is expected to render practical applications for metal-free nanocarbon electrocatalysts.
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