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DOE OSTI · 1892406

Differences in the Interfacial Mechanical Properties of Thiophosphate and Argyrodite Solid Electrolytes and Their Composites

Dixit, Marm·Muralidharan, Nitin·Parejiya, Anand·Jafta, Charl·Du, Zhijia·Neumayer, Sabine M.·Essehli, Rachid·Amin, Ruhul·Balasubramanian, Mahalingam·Belharouak, Ilias
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Abstract

Interfacial mechanics are a significant contributor to the performance and degradation of solid-state batteries. Spatially resolved measurements of interfacial properties are extremely important to effectively model and understand the electrochemical behavior. Herein, we report the interfacial properties of thiophosphate (Li 3 PS 4 )- and argyrodite (Li 6 PS 5 Cl)-type solid electrolytes. Using atomic force microscopy, we showcase the differences in the surface morphology as well as adhesion of these materials. Additionally we investigate solvent-less processing of hybrid electrolytes using UV-assisted curing. Physical, chemical, and structural characterizations of the materials highlight the differences in the surface morphology, chemical makeup, and distribution of the inorganic phases between the argyrodite and thiophosphate solid electrolytes.

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36 MATERIALS SCIENCEAFMargyroditebatteriescompositesinterfacematerialsmechanical propertiessolid electrolytesurface interactionsthiophosphate

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Dixit, Marm, Muralidharan, Nitin, Parejiya, Anand, Jafta, Charl, Du, Zhijia, Neumayer, Sabine M., Essehli, Rachid, Amin, Ruhul, Balasubramanian, Mahalingam, Belharouak, Ilias. 2022-09-21. Differences in the Interfacial Mechanical Properties of Thiophosphate and Argyrodite Solid Electrolytes and Their Composites. https://doi.org/10.1021/acsami.2c10589

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