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Title: Stability of the solid electrolyte Li{sub 3}OBr to common battery solvents

Graphical abstract: The stability of the anti-perovskite phase Li{sub 3}OBr has been assessed in a variety of battery solvents. - Highlights: • Lithium stable solid electrolyte Li{sub 3}OBr unstable to polar organic solvents. • Solvation with no dissolution destroys long-range structure. • Ion exchange with protons observed. - Abstract: Recently a new class of solid lithium ion conductors was reported based on the anti-perovskite structure, notably Li{sub 3}OCl and Li{sub 3}OBr. For many beyond lithium-ion battery uses, the solid electrolyte is envisioned to be in direct contact with liquid electrolytes and lithium metal. In this study we evaluated the stability of the Li{sub 3}OBr phase against common battery solvents electrolytes, including diethylcarbonate (DEC) and dimethylcarbonate (DMC), as well as a LiPF{sub 6} containing commercial electrolyte. In contact with battery-grade organic solvents, Li{sub 3}OBr was typically found to be insoluble but lost its crystallinity and reacted with available protons and in some cases with the solvent. A low temperature heat treatment was able to restore crystallinity of the samples; however evidence of proton ion exchange was conserved.
Authors:
 [1] ;  [2] ;  [2]
  1. Department of Engineering Technology, College of Engineering and Engineering Technology, Northern Illinois University, 301B Still Gym, DeKalb, IL 60115 (United States)
  2. Chemical Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439-4837 (United States)
Publication Date:
OSTI Identifier:
22341868
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 49; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DIFFUSION; DISSOLUTION; ENERGY STORAGE; HEAT TREATMENTS; ION EXCHANGE; IONIC CONDUCTIVITY; LIQUIDS; LITHIUM; LITHIUM ION BATTERIES; LITHIUM IONS; ORGANIC SOLVENTS; PEROVSKITE; PROTONS; SOLID ELECTROLYTES; SOLIDS; SOLVATION; STABILITY