Low-temperature preparation of lithium vanadium oxides by solution processing

Lithium vanadium (Li–V) oxides were prepared by solution processing using the reaction of an aqueous hydrogen peroxide solution with lithium and vanadium alkoxides, LiO-n-C3H7 and VO(O-i-C3H7)3. It was found that various phases of the Li–V oxides such as the orthorhombic 2D-V2O5 compound, and the β- and γ-phases having the general formula of LixV2O5 (0⩽x <2.2) are obtained at low temperature such as ∼300 °C. Particularly, it should be noted that γ-LixV2O5 can be prepared as a single phase in the x range of 1.3–2.2. The charge and discharge behavior for the γ-phase material (x=2.2) is discussed as compared to that of the γ-phase material (x=1) prepared by conventional high temperature solid-state reaction.