TY - JOUR
T1 - Transformation mechanism of high-valence metal sites for the optimization of Co- and Ni-based OER catalysts in an alkaline environment
T2 - recent progress and perspectives
AU - Qiao, Chen
AU - Hao, Yingying
AU - Cao, Chuanbao
AU - Zhang, Jia Tao
N1 - Publisher Copyright:
© 2023 The Royal Society of Chemistry.
PY - 2022/12/5
Y1 - 2022/12/5
N2 - As an important semi-reaction process in electrocatalysis, oxygen evolution reaction (OER) is closely associated with electrochemical hydrogen production, CO2 electroreduction, electrochemical ammonia synthesis and other reactions, which provide electrons and protons for the related applications. Considering their fundamental mechanism, metastable high-valence metal sites have been identified as real, efficient OER catalytic sites from the recent observation by in situ characterization technology. Herein, we review the transformation mechanism of high-valence metal sites in the OER process, particularly transition metal materials (Co- and Ni-based). In particular, research progress in the transformation process and role of high-valence metal sites to optimize OER performance is summarized. The key challenges and prospects of the design of high-efficiency OER catalysts based on the above-mentioned mechanism and some new in situ characterizations are also discussed.
AB - As an important semi-reaction process in electrocatalysis, oxygen evolution reaction (OER) is closely associated with electrochemical hydrogen production, CO2 electroreduction, electrochemical ammonia synthesis and other reactions, which provide electrons and protons for the related applications. Considering their fundamental mechanism, metastable high-valence metal sites have been identified as real, efficient OER catalytic sites from the recent observation by in situ characterization technology. Herein, we review the transformation mechanism of high-valence metal sites in the OER process, particularly transition metal materials (Co- and Ni-based). In particular, research progress in the transformation process and role of high-valence metal sites to optimize OER performance is summarized. The key challenges and prospects of the design of high-efficiency OER catalysts based on the above-mentioned mechanism and some new in situ characterizations are also discussed.
UR - http://www.scopus.com/inward/record.url?scp=85144808435&partnerID=8YFLogxK
U2 - 10.1039/d2nr05783b
DO - 10.1039/d2nr05783b
M3 - Review article
C2 - 36533402
AN - SCOPUS:85144808435
SN - 2040-3364
VL - 15
SP - 450
EP - 460
JO - Nanoscale
JF - Nanoscale
IS - 2
ER -