| 摘要 |
The invention discloses a lithium ion battery, an active cathode material thereof and preparation methods for the lithium ion battery and the active cathode material. The active cathode material comprises active cathode substances and a surface coating film, wherein the surface coating film comprises the components of carbon and metallic or non-metallic oxides. The stability and security of the active cathode material provided by the invention can be improved, and simultaneously, the high electric conductivity of the active cathode material is maintained. The battery has high stability at high temperature, and can effectively reduce the potential safety hazards of a battery core such as case bulging, leakage, explosion and the like. The methods provided by the invention are simple and easy to industrially popularize and apply, and are implemented by manufacturing procedures easy to control. |
