Synthesis, characterizations, and utilization of oxygen-deficient metal oxides for lithium/sodium-ion batteries and supercapacitors

By L. Wang, Xuan Xie, K. Dinh, Qingyu Yan, Jianmin Ma. Coordination chemistry reviews, 2019

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Abstract 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.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/890f9fe8a2759fe436c4184826e650faedb506c1