| abstract |
The invention provides an oxide solid electrolyte and a preparation method and application thereof. The preparation method includes the following steps: (1) mixing a lithium source, an aluminum source, a phosphorus source, a titanium source and/or a germanium source with a solvent, grinding Then, a primary sintering material is obtained; (2) the primary sintered material obtained in step (1) is subjected to spark plasma sintering to obtain the oxide solid state electrolyte, and the oxide solid state electrolyte grain boundary obtained by the method of the present invention is used. Low resistance, resulting in high grain boundary conductivity and high overall conductivity, when used for cathode material coating or solid electrolyte, better ion transport channels can be constructed, enabling high energy density cathode materials and solid-state batteries with better rates When the oxide solid electrolyte is used for quasi-solid separator coating, the high lithium ion conductivity enables the battery to have better cycle performance. |