Halogen-rich argyrodites for lithium-sulphur batteries

A novel battery composition featuring halogen-rich argyrodites for Lithium-Sulphur batteries.

Applications: Solid state batteries

Features	Benefits
A novel solid-state electrolyte that can be applied in all-solid-state Lithium-Sulphur (Li-S) batteries	Aims to provide a lithium all-solid-state battery with high capacity and high energy density
An argyrodite solid electrolyte which consists of lithium, phosphorus, sulphur, and a halogen/halogens, such as chlorine and bromine	No polysulphide formation or dissolution
Benefits from sulphur’s natural advantages while overcoming its challenge of low stability	Structural modifications of the argyrodites achieves higher conductivity and lower activation energy
Researchers have experimented with different halogen compositions and identified specific novel compositions that are particularly advantageous	Ionic conductivity of the solid electrolyte shown to be ~10 mS/cm
	Can be used in all-solid-state Li-S cells and improve the cycle performance and rate performance, leading to higher energy density
	Sulphur is naturally abundant leading to environmental benefits and lower cost
	Other Li-S advantages include providing lighter-weight and safer batteries
	Initial lab tests and data acquisition completed and show great cycling and rate performance for solid-state Li-S batteries with such an electrolyte