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US 9,461,332 B2Granted
LAGP glass ceramics
AssigneesRobert Bosch GmbH, Fm Lab
InventorsFelix Eberle, Daniil Itkis, Lev Trusov, Victor Vizgalov
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Abstract
A solid electrolyte, particularly a lithium-conductive solid electrolyte, can be obtained from a glass-ceramics process. A glass-ceramics process can be used to produce a solid electrolyte, particularly a lithium-conductive solid electrolyte. The solid electrolyte can be LAGP, i.e. Li1+xAlxGe2-x(PO4)3 modified by a crystallization nucleation agent.
Claims12
A method of synthesizing LAGP (Li1+xAlxGe2-x(PO4)3) in a glass-ceramics process, comprising:
- (a) providing a crystallization agent which is configured to crystallize in a glass-ceramics process prior to a main lithium-conductive phase,
- (b) forming a glass melt at a temperature that is between 1000° C. and 1500° C.,
- (c) adding said crystallization agent and a crystallization nucleation agent to the glass melt,
- (d) quenching the glass melt to obtain uniform glass plates, and
- (e) annealing said glass plates in a two-stage heating program including
- crystallization of the crystal nucleation agent prior to crystallization of the main lithium-conductive phase and
- crystallization of the main lithium-conductive phase,
- (f) resulting in LAGP (Li1+xAlxGe2-x(PO4)3).
5 more elements
Dependencies are inferred from the claim text.