METHOD FOR RECOVERY OF OXIDE SOLID ELECTROLYTE WITH INITIAL PHASE, METHOD FOR PRODUCING A LITHIUM BATTERY AND ENVIRONMENTALLY SAFE BATTERY MADE OF IT Russian patent published in 2021 - IPC H01M10/54 

FIELD: production of lithium batteries.

SUBSTANCE: invention can be used to recover spent batteries. A method for reducing oxide solid electrolytes with an initial phase includes obtaining a battery with an oxide solid electrolyte with the original size and initial characteristics of the material; disassembling the battery to obtain a work piece comprising at least one electrode and an oxide solid electrolyte; removing organic matter from the portion to be treated so that it substantially remains a inorganic composition; separation of the composition of inorganic substances to obtain an oxide solid electrolyte, and purification of the oxide solid electrolyte to obtain a reduced oxide solid electrolyte with the original size and original characteristics of the material. The invention also discloses a method for producing a lithium battery and an environmentally friendly battery therefrom, which are applied to the recycling of solid or quasi-solid lithium batteries after use. Solid oxide electrolyte is used only as an ion transport channel and does not participate in the input and extraction of lithium ions during the charging and discharging cycles. Its crystal structure is not destroyed. Therefore, the restoration of the original phase of the solid oxide electrolyte is achieved without damaging the structure or materials.

EFFECT: recovered oxide solid electrolyte can be reused for reduction production cost of corresponding lithium battery.

11 cl, 1 tbl, 3 dwg