IP Library › Granted Patent US 12,294,051
Granted Patent B2
US 12,294,051 · App. 17/654,648 · Granted May 6, 2025

Making and inspecting a web of vitreous lithium sulfide separator sheet and lithium electrode assemblies and battery cells

Inventors: Steven J. Visco (Berkeley, CA); Yevgeniy S. Nimon (Danville, CA); Lutgard C. De Jonghe (Lafayette, CA); Bruce D. Katz (Moraga, CA); Vitaliy Nimon (San Francisco, CA)
Assignee: PolyPlus Battery Company
H01M10/0562G01N21/31G01N21/8422G01N21/8914G01N21/896H01M4/0407H01M4/134H01M4/1395H01M10/0525H01M50/403H01M50/406H01M50/437H01M50/46G01N2021/8416G01N2021/8438G01N2021/8967H01M10/0566H01M2300/0068
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Quick Facts
Patent No.
US 12,294,051
App. No.
17/654,648
Granted
May 6, 2025
Kind
B2
Abstract

A 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. An automated machine based system, apparatus and methods assessing and inspecting the quality of such vitreous solid electrolyte sheets, electrode sub-assemblies and lithium electrode assemblies can be based on spectrophotometry and can be performed inline with fabricating the sheet or web (e.g., inline with drawing of the vitreous Li ion conducting glass) and/or with the manufacturing of associated electrode sub-assemblies and lithium electrode assemblies and battery cells.

Claims (11)

1. A Li ion conductive vitreous sulfide glass sheet in the form of a mother-sheet having a high-quality center portion, with uniform thickness and smooth liquid-like surfaces, and lower quality peripheral edge portions, which generally extend along its lengthwise dimension.

2. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the low-quality peripheral edge portions are removed by slicing.

3. The Li ion conductive vitreous sulfide glass sheet of claim 2 , wherein the low-quality peripheral edge portions are removed by laser cutting.

4. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion accounts for at least 50% of the mother-sheet's footprint/area.

5. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion accounts for at least 60% of the mother-sheet's footprint/area.

6. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion accounts for at least 70% of the mother-sheet's footprint/area.

7. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion accounts for at least 80% of the mother-sheet's footprint/area.

8. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion accounts for at least 90% of the mother-sheet's footprint/area.

9. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the major opposing surfaces of the high-quality center portion of the mother-sheet has an average surface roughness R a <1.0 mm.

10. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the high-quality center portion of the mother-sheet has thin uniform thickness≤100 mm.

11. The Li ion conductive vitreous sulfide glass sheet of claim 1 , wherein the mother-sheet is fabricated as a mother-web having a high-quality center portion and once the lower quality edge portions of the mother-web are sliced off the glass sheet is rolled to form a supply roll.

Continuity (18)
Continuation 16174058 · Oct 29, 2018
Continuation In Part 15726302 · Oct 5, 2017
Continuation 15380989 · Dec 15, 2016
Continuation In Part 14954812 · Nov 30, 2015
Continuation In Part 14954816 · Nov 30, 2015
Provisional Application 62344349 · Jun 1, 2016
Provisional Application 62342155 · May 26, 2016
Provisional Application 62271180 · Dec 22, 2015
Provisional Application 62222408 · Sep 23, 2015
Provisional Application 62196247 · Jul 23, 2015
Provisional Application 62171561 · Jun 5, 2015
Provisional Application 62165791 · May 22, 2015
Provisional Application 62149250 · Apr 17, 2015
Provisional Application 62146809 · Apr 13, 2015
Provisional Application 62126319 · Feb 27, 2015
Provisional Application 62111048 · Feb 2, 2015
Provisional Application 62086641 · Dec 2, 2014
Related Publication 20220328865A1 · Oct 13, 2022
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