Improved cycling performance and rate stability of ITO-compounded Li₂MnSiO₄ for lithium-ion batteries

Li₂MnSiO₄ compounded with indium tin oxide (ITO) was successfully synthesized through a sol-gel method. The structure and morphology characterization of Li₂MnSiO₄/ITO nanocomposite are demonstrated by XRD, SEM, TEM, EDS and XPS. Galvanostatic charge-discharge tests, EIS and CV are employed to examine the electrochemical performance of the composite. From those results, it could be observed that the electrochemical performance of Li₂MnSiO₄ cathode material has been significantly improved due to the introducing of indium tin oxide. The 3 wt% ITO-compounded sample displayed a discharge specific capacity around 141 mA h g^-1 at 0.05C, 134.4 mA h g^-1 at 0.1C, 132.9 mA h g^-1 at 0.2C and 127.4 mA h g^-1 at 0.5C in the first cycle, which is much higher than the pristine sample.