| abstract |
The invention relates to the field of lithium ion batteries, in particular to a solid electrolyte, a preparation method thereof, and a lithium ion battery. The solid electrolyte has a core-shell structure, the core-shell structure includes a core material and a shell material coated on the core material, the core material has a perovskite structure, and the shell material contains Li 3+ y Y 2 Si y P 3‑y O 12 , wherein 0.05≤y≤0.5. It also relates to the preparation method of the above-mentioned solid electrolyte. It also relates to a lithium ion battery, which includes a positive electrode, a negative electrode, and a solid electrolyte disposed between the positive electrode and the negative electrode. The solid electrolyte of the invention has wider electrochemical window and higher ionic conductivity, and has wide application. |