Standalone sulfide based lithium ion-conducting glass solid electrolyte and associated structures, cells and methods
AssigneePolyPlus Battery Company
InventorsSteven J. Visco, Yevgeniy S. Nimon, Lutgard C. De Jonghe, Bruce D. Katz, Vitaliy Nimon
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Abstract
A standalone lithium ion-conductive solid electrolyte including a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass is capable of high performance in a lithium metal battery by providing a high degree of lithium ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner.
Claims23
A standalone lithium ion-conductive solid electrolyte, comprising:
- a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass having,
- a liquid-like surface;
- an area of at least 10 cm2;
- a thickness of no more than 100 μm;
- and
- a room temperature intrinsic lithium ion conductivity of at least 10−5 S/cm.
A method of making a standalone Li-ion conductive solid electrolyte, the method comprising drawing a molten sheet of Li ion conducting sulfide glass into a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass.
A method of making a standalone Li-ion conductive solid electrolyte, the method comprising:
- providing a Li ion conducting sulfide glass pre-form;
- and
- pulling on the preform at a temperature sufficient to draw the pre-form to a vitreous glass ribbon having a thickness in the range of 5 μm to 100 μm.
Dependencies are inferred from the claim text.