reviewAdvanced MaterialsMay 16, 2017Closed access

Defect Chemistry of Nonprecious‐Metal Electrocatalysts for Oxygen Reactions

Hunan University · State Key Laboratory of Chemobiosensing and Chemometrics · +1 more institution

PubMed
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Abstract

Oxygen electrocatalysis, including the oxygen-reduction reaction (ORR) and oxygen-evolution reaction (OER), is a critical process for metal-air batteries. Therefore, the development of electrocatalysts for the OER and the ORR is of essential importance. Indeed, various advanced electrocatalysts have been designed for the ORR or the OER; however, the origin of the advanced activity of oxygen electrocatalysts is still somewhat controversial. The enhanced activity is usually attributed to the high surface areas, the unique facet structures, the enhanced conductivities, or even to unclear synergistic effects, but the importance of the defects, especially the intrinsic defects, is often neglected. More recently,…

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