Rational optimization of cathode/electrolyte bilayer assemblies for all-solid-state batteries

Description

Solid electrolytes with high ionic conductivity of >10−3 S cm−1 have become commercially available and new materials are continuously developed. The race for higher ionic conductivities has become less important and the focus of solid-state-battery research shifts more and more to the interface between active material and electrolyte particles. Electro-chemomechanical aspects for the fabrication of all-solid-state batteries need to be considered to develop scalable production technologies.
In this work, investigations on wet-chemical processing of cathode/electrolyte bilayers using Li6PS5Cl as electrolyte and NMC811 as active material are presented. First, key parameters for the fabrication of electrolyte and composite cathode layers are identified and optimized with special focus on the influence of binder materials and their interaction with selected solvents. Furthermore, experimental considerations regarding the combination of electrolyte and cathode layers to form bilayer assemblies are discussed and strategies to avoid cross-contamination and improve the cathode-electrolyte interface are presented.

Period	8 Nov 2022
Event title	International Battery Production Conference - IBPC 2022
Event type	Conference
Location	Braunschweig, GermanyShow on map
Degree of Recognition	International