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ECS New England Section: Understanding (effective) ionic transport in solids and solid-state batteries

Date(s):
November 30, 2022
Venue:
Sheraton Boston Hotel
39 Dalton ST
Boston, MA 02199-3901 
Website:
Not available
Description:

The ECS New England Section is hosting an in-person reception and technical presentation during the 2022 MRS Fall Meeting on Wednesday, November 30. Join the section for networking and a presentation from Wolfgang Zeier from the University of Munster & Helmholtz-Institute Munster.

Agenda:
1800-1900h – Reception & Networking
1900-2000h - "Understanding (effective) ionic transport in solids and solid-state batteries" by Wolfgang Zeier

Abstract:
The advent of solid-state batteries has spawned a recent increase in interest in lithium conducting solid electrolytes. However, many open questions remain when trying to optimize electrolytes and understand solid state battery chemistries.

In this presentation, we will show how an understanding of the structure-transport properties of the lithium argyrodites Li6PS5X can help tailor the ionic conductivity. We show that an anion site-disorder and anionic charge inhomogeneities are important and that and that tailoring dis disorder leads to improvements of the conductivity.

In a second part of this presentation, we will show that it is not only important to find fast ionic conductors, but that fast ionic conduction is paramount within solid state battery composites. Measuring the effective ionic transport in cathode composites provides an avenue to explore transport and stability limitations that in turn provide better criteria for solid state battery performance.

Finally, we will explore the current focus of halide-based ionic conductors in solid state batteries and discuss stability limitations in solid state battery cells at the anode as well as the cathode composites.


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