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

Journal Article · Wed Jan 01 04:00:00 EST 2014 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2013.10.006· OSTI ID:22341868

Schroeder, D. J. ^[1]; Hubaud, A. A. ^[2]

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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)

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.

• OSTI ID: 22341868
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 49; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

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