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.

How to synthesize pure Li2−xFeSi1−xPxO4/C (x = 0.03–0.15) easily from low-cost Fe3+ as cathode materials for Li-ion batteries

Self-catalysis helps to synthesize pure Li_2−xFeSi_1−xP_xO₄/C (0.03–0.15) easily by using the low cost compounds Fe(NO₃)₃·9H₂O and NH₄H₂PO₄.

Structural and electrochemical properties of Mg-doped nickel based cathode materials LiNi0.6Co0.2Mn0.2−xMgxO2 for lithium ion batteries

Combined with experiments and ab initio calculations, we investigated the impact of the substitution of Mn with Mg in LiNi_0.6Co_0.2Mn_0.2O₂.