US12573678USUSPTO Grant XML

Recycling all solid state battery technology

In a method for recycling all solid-state batteries, spent battery cells are dissolved in anhydrous ethanol. The resulting solution is separated into solids and supernatants which are separately processed to regenerate the solid electrolyte and the solid electrode materials. The supernatant is subjected to vacuum evaporation to precipitate an electrolyte powder, which is then annealed under flowing oxygen. The solid electrode material is regenerated by washing the solids with water, drying the washed solids, relithiating the washed solids, and annealing the relithiated solids. The resulting materials are suitable for use in fabrication of new all-solid state batteries.

Patent

Brief

Patent brief

Problem

How can battery fires and thermal runaway in EV packs be prevented?

Novelty

The resulting solution is separated into solids and supernatants which are separately processed to regenerate the solid...

Uses

Patent review

Assignee

THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Published

Mar 10, 2026

Inventors

Zheng Chen, Darren Huan Shen Tan, Abhik Banerjee, Ying Shirley Meng

Domain

Mobility / storage

Plain-English summary

Problem

How can battery fires and thermal runaway in EV packs be prevented?

Solution

In a method for recycling all solid-state batteries, spent battery cells are dissolved in anhydrous ethanol.

Key novelty

The resulting solution is separated into solids and supernatants which are separately processed to regenerate the solid electrolyte and the solid electrode materials.

Applications

Patent review

Relevant search intents

bd4e33cf5b38

Related patents