Among them, two patents were published on solid-state batteries.
One is "a cathode material and its preparation method, a solid-state lithium battery". The filing date of this patent is 2065438+July 65438+July 09, and the filing date is 20265438+1October 65438+September 9.
Specifically, the invention provides a cathode material with a core-shell structure, wherein the core is a cathode active material, and the shell contains a lithium-containing transition metal oxide and Ti2O3, and the ionic conductivity of the lithium-containing transition metal oxide is higher than 10? 8S cm？ 1, when the voltage is higher than 3.0V, the transition metal oxide containing lithium can be removed to generate oxide, and the electronic conductivity of the oxide is higher than 10.
The invention also provides a preparation method of the cathode material and a solid-state lithium battery. The cathode material can simultaneously construct lithium ion transmission channels and electron transmission channels, thus greatly improving the capacity exertion, first cycle Coulomb efficiency, cycle performance and high rate performance of solid-state lithium batteries.