Journal
SMALL
Volume 15, Issue 13, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201805103
Keywords
earth-abundant metals; electrocatalysts; mild pH; oxygen evolution reaction (OER); water oxidation
Categories
Funding
- National Natural Science Foundation of China [21575137, 21645008, 21305042, 21375037]
- Scientific Research Fund of Hunan Provincial Education Department [14B116]
- Science and Technology Department [14JJ4030]
- construct program of the key discipline in Hunan province
- Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province
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Developing anodic oxygen evolution reaction (OER) electrocatalysts with high catalytic activities is of great importance for effective water splitting. Compared with the water-oxidation electrocatalysts that are commonly utilized in alkaline conditions, the ones operating efficiently under neutral or near neutral conditions are more environmentally friendly with less corrosion issues. This review starts with a brief introduction of OER, the importance of OER in mild-pH media, as well as the fundamentals and performance parameters of OER electrocatalysts. Then, recent progress of the rational design of electrocatalysts for OER in mild-pH conditions is discussed. The chemical structures or components, synthetic approaches, and catalytic performances of the OER catalysts will be reviewed. Some interesting insights into the catalytic mechanism are also included and discussed. It concludes with a brief outlook on the possible remaining challenges and future trends of neutral or near-neutral OER electrocatalysts. It hopefully provides the readers with a distinct perspective of the history, present, and future of OER electrocatalysts at mild conditions.
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