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Recent Advances in the Development of Water Oxidation Electrocatalysts at Mild pH
Author(s) -
Li Peipei,
Zhao Runbo,
Chen Hongyu,
Wang Huanbo,
Wei Peipei,
Huang Hong,
Liu Qian,
Li Tingshuai,
Shi Xifeng,
Zhang Youyu,
Liu Meiling,
Sun Xuping
Publication year - 2019
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201805103
Subject(s) - oxygen evolution , catalysis , water splitting , nanotechnology , anode , materials science , chemistry , biochemical engineering , electrochemistry , electrode , organic chemistry , photocatalysis , engineering
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.