Synthesis and Redox Behavior of Oxygen Deficient Brannerite LiVWO6-δ for Lithium Batteries

This paper describes the synthesis and electrochemical behavior of the oxygen deficient brannerite LiVWO_6-δ Brannerite LiVWO_6-δ has been synthesized by means of a simple aqueous solution reaction (ASR) technique namely soft-combustion process employing glycine as a soft combustion agent. The synthesized product has been subjected to thermal treatment in various stages in order to best understand the phase formation and study their redox behavior in lithium-containing cells. Electrochemical studies such as Cyclic voltammetry, Galvanostatic (constant current) charge-discharge curves and Galvanostatic Intermittent Titration Technique (GITT) on this oxygen deficient product show that this material could be regarded as 4-volt class category with specific capacities as high as ~ 95 mAh/g in the voltage regime 4.9 V to 2.8 V vs Li⁺/Li.