Dynamic investigation of oxygen defects on transition metal-based electrocatalysts: formation, characterization, and mechanism during alkaline oxygen evolution reaction
Publication Name
Science China Chemistry
Abstract
Oxygen defects play a critical role in the electrocatalytic oxygen evolution reaction (OER). Therefore, in-depth understanding the structure-activity-mechanism relationship of these defects is the key to design efficient OER electrocatalysts. This relationship needs to be understood dynamically due to the potential for irreversible phase transitions during OER. Consequently, significant efforts have been devoted to study the dynamic evolution of oxygen defects to shed light on the OER mechanism. This review critically examines and analyzes the dynamic processes occurring at oxygen defect sites during OER, including defect formation and defect evolution mechanisms, along with the advanced characterization techniques needed to understand these processes. This review aims to provide a comprehensive understanding of high-efficiency electrocatalysts, with a particular emphasis on the importance of in situ monitoring the dynamic evolution of oxygen defects, providing a new perspective towards efficient OER electrocatalyst design.[Figure not available: see fulltext.].
Open Access Status
This publication is not available as open access
Volume
66
Issue
8
First Page
2221
Last Page
2237
Funding Number
2021YFF0500502
Funding Sponsor
Ministry of Science and Technology of the People's Republic of China