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US 11,444,270 B2Granted
Treating sulfide glass surfaces and making solid state laminate electrode assemblies
AssigneePolyPlus Battery Company
InventorsSteven J. Visco, Vitaliy Nimon, Yevgeniy S. Nimon, Bruce D. Katz, Richard L. Swisher
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Abstract
Methods for making solid-state laminate electrode assemblies include methods of forming a solid electrolyte interphase (SEI) by ion implanting nitrogen and/or phosphorous into the glass surface by ion implantation.
Claims20
A method for making a battery cell, the method comprising:
- forming a solid-state laminate electrode assembly by,
- providing a lithium ion conducting sulfide glass substrate, the substrate comprising a sulfide glass solid electrolyte sheet having room temperature Li ion conductivity of at least 10−5 S/cm, the sulfide glass substrate having first and second major surfaces;
- injecting nitrogen and/or phosphorous into the first major surface of the sulfide glass substrate, wherein the nitrogen and/or phosphorous penetrates the glass surface forming an implanted zone;
- evaporating lithium metal onto the implanted zone of the sulfide glass substrate;
- wherein at least a portion of the evaporated lithium reacts with the injected nitrogen and/or phosphorous to form a solid electrolyte interphase (SEI) layer comprising lithium and one or both of nitrogen and phosphorous;
- and
- disposing a positive electrode adjacent to the second major surface of the sulfide glass substrate of the solid-state laminate electrode assembly.
4 more elements
A battery cell, comprising:
- a solid-state laminate electrode assembly comprising,
- a lithium ion conducting sulfide glass substrate, the substrate comprising a sulfide glass solid electrolyte sheet having room temperature Li ion conductivity of at least 10−5 S/cm, the sulfide glass substrate having first and second major surfaces;
- a solid electrolyte interphase (SEI) layer comprising lithium and one or both of nitrogen and phosphorous at the first major surface of the sulfide glass substrate;
- and
- a lithium ion intercalating transition metal oxide positive electrode adjacent to the second major surface of the sulfide glass substrate of the solid-state laminate electrode assembly.
2 more elements
Dependencies are inferred from the claim text.