Project title: New Li+ ion conducting solid electrolytes based on the LISICON structure
Project summary: The LISICON structure is a well known host for Li+ ion conduction. The original LISICON discovered by Hong in 1978 was Li2+2xZn1-xGeO4 since then a number of related LISICONs have been developed. The LISICON structure is based on a distorted hexagonal close packed array of oxide ions with Li, Zn and Ge occupying half the tetrahedral sites. Additional Li+ ions enter octahedral sites in the lattice and it is these compositions that exhibit high Li+ ion conductivity.
Recently, there has been a resurgence of interest in Li+ ion conducting solid electrolytes for Li-battery applications due to safety problems with flammable liquid electrolytes. The present project seeks do develop new families of LISICONs, with a view to enhancing their conductivity and stability.