Solid state ion-conducting membrane could enable safer batteries

Li-ion Batteries 18650 - Pouch Cell (Charged EVs)

Researchers at the University of Maryland have developed a flexible, solid-state, ion-conducting membrane based on a 3D Li-ion conducting ceramic nanofiber network.

In “Flexible, solid-state, ion-conducting membrane with 3D garnet nanofiber networks for lithium batteries,” published in the Proceeding of the National Academy of Sciences, the scientists describe a hybrid solid-state composite electrolyte in which ceramic garnet nanofibers function as the reinforcement and lithium-ion-conducting polymer functions as the matrix. The interwelded garnet nanofiber network provides a continuous ion-conducting pathway in the electrolyte membrane.

Solid-state composite electrolyte

According to the research team, the membrane shows superior thermal stability and electrochemical stability to high voltage, and could replace conventional flammable organic liquid electrolyte systems in lithium-ion batteries.

 

Source: University of Maryland