期刊
COORDINATION CHEMISTRY REVIEWS
卷 397, 期 -, 页码 138-167出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ccr.2019.06.015
关键词
Oxygen vacancy; Metal oxides; Lithium-ion batteries; Sodium-ion batteries; Supercapacitors
资金
- National Natural Science Foundation of China [51302079]
- Natural Science Foundation of Hunan Province [2017JJ1008]
Oxygen vacancy (V-O), the most common type of defect in metal oxides, could alter intrinsic properties which are usually determined by crystal structures. Oxygen-deficient metal oxides with regulated properties have been applied in many aspects, especially lithium/sodium-ion batteries and supercapacitors, in which the V-O-induced mobility, conductivity, and structural stability could affect their performance to a great extent. By modeling certain oxygen-deficient metal oxides, the mechanisms behind such performance regulations are comprehensively described. For instance, while appropriate V-O can enhance the electrochemical properties of anode materials by providing extra active sites, built-in electric field, etc.; the influences of oxygen non-stoichiometry vary with the cathode's crystal structure and cationic composition. In addition to these, the synthesis strategies and common physical characterization techniques for V-O are also introduced. This review aims to introduce oxygen defect chemistry and propel its reasonable applications in the field of electrochemical energy storage. (C) 2019 Elsevier B.V. All rights reserved.
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