Codoping effect of Li1.1V0.9O2 anodes for lithium-ion batteries with Mo and W (Li1.1V0.9-2xMoxWxO2): Based on electronic structure calculations using full-potential KKR-Green's function method

Abstract

Pure crystalline doped Li1.1V0.9O2 powder was prepared. The specific charge/discharge capacities of the doped Li1.1V0.9O2 anodes were more than double of those of the bare Li1.1V0.9O2 anodes, especially at high C-rates. The main origin of such capacities was revealed to be the increase in electronic conductivity upon doping due to the extra free electron. (C) 2012 Elsevier B. V. All rights reserved.