A Preparation of LMO@SiO2 by CTAB-assisted Hydrolysis of TEOS Regulating Oxygen Activity to Improve Cycle Sability
Lithium-rich manganese-based cathode materials were prepared by co-precipitation method,which were coated with SiO2 by CTAB-assisted hydrolysis of TEOS regulating oxygen activity.The as-prepared materials were characterized by constant current charge and discharge tests,cyclic voltammetry and electrochemical impedance spectroscopy.An investigation was conducted into the impact of SiO2 coating modification on the electrochemical performances of manganese-based materials rich in lithium.The results show that SiO2 coating layer can effectively regulate oxygen activity,which has a positive effect on improving the cyclic stability of the material.
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