| 摘要 |
A preparation method for a lithium battery high-voltage modified negative electrode material. A prepared lithium battery is capable of quick charging/discharging, and a charging cut-off voltage is increased to 4.35 V, significantly improving the energy density of the battery. The prepared negative electrode material uses graphite as a core. The surface of the graphite is evenly coated with a layer of lithium titanate, and then the graphite particle surface coated with the lithium titanate is further coated with a layer of conductive agent, forming a graphite-lithium titanate-conductive agent three-layer composite structure. The prepared battery has desirable quick charging/discharging performance; moreover, the high-and-low temperature performance is greatly improved, and the safety is also significantly improved. |
