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Methods of making lithium ion conducting sulfide glass

Patent ·
OSTI ID:2222295
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. Such an electrolyte is also manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner using an automated machine based system, apparatus and methods based on inline spectrophotometry to assess and inspect the quality of such vitreous solid electrolyte sheets and associated components. Suitable manufacturing methods can involve providing a sulfur precursor, providing a boron precursor material having lithium as a second constituent, combining the sulfur and boron precursor materials to form a precursor mixture, melting the mixture, and cooling the melt to form a solid lithium ion conducting glass. The glass may have a Li+ conductivity of at least 10−5 S/cm. The boron precursor material may be synthesized by reducing boron oxide to boron metal by heating the boron oxide in direct contact with lithium metal.
Research Organization:
PolyPlus Battery Company, Berkeley, CA (United States)
Sponsoring Organization:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
DOE Contract Number:
AR0000772
Assignee:
PolyPlus Battery Company (Berkeley, CA)
Patent Number(s):
11,749,834
Application Number:
16/509,385
OSTI ID:
2222295
Country of Publication:
United States
Language:
English

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