Standalone sulfide based lithium ion-conducting glass solid electrolyte and associated structures, cells and methods
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01M-010/0562
H01M-010/0525
C03B-023/037
C03B-017/06
C03B-033/023
C03B-023/24
C03C-003/19
C03C-003/32
C03C-004/18
출원번호
US-0954816
(2015-11-30)
등록번호
US-10147968
(2018-12-04)
발명자
/ 주소
Visco, Steven J.
Nimon, Yevgeniy S.
De Jonghe, Lutgard C.
Katz, Bruce D.
Nimon, Vitaliy
출원인 / 주소
POLYPLUS BATTERY COMPANY
대리인 / 주소
Weaver Austin Villeneuve & Sampson LLP
인용정보
피인용 횟수 :
0인용 특허 :
75
초록▼
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 i
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.
대표청구항▼
1. 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; anda room temperature intrinsic lithium ion conduct
1. 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; anda room temperature intrinsic lithium ion conductivity of at least 10−5 S/cm. 2. The electrolyte of claim 1, wherein the glass sheet has a substantially uniform thickness of no more than 100 μm. 3. The electrolyte of claim 1, wherein the glass sheet further comprises substantially parallel lengthwise edges. 4. The electrolyte of claim 1, wherein the glass sheet is a continuous web at least 100 cm in length. 5. The electrolyte of claim 1, wherein the glass sheet is a continuous web at least 1000 cm in length. 6. The electrolyte of claim 1, wherein the vitreous sulfide-based glass sheet is characterized as having a threshold current for Li dendrite initiation that is greater than 1 mA/cm2. 7. The electrolyte of claim 1, wherein the liquid-like surface lacks surface flaws having a depth dimension greater than 1% of the sheet thickness. 8. The electrolyte of claim 1, wherein the sheet lacks of powder particles, inter-particle boundaries, or contiguous voids extending between first and second principal surfaces that are sufficient to propagate a Li dendrite, and the liquid-like surface lacks flaw manifestations of a pressed powder compact that are sufficient to initiate Li dendrite penetration. 9. The electrolyte of claim 1, wherein the sulfide glass has a glass stability factor {Tx−Tg}<100° C. 10. The electrolyte of claim 1, wherein the sulfide glass has a glass stability factor {Tx−Tg}<50° C. 11. The electrolyte of claim 1, wherein the sulfide glass has a glass stability factor {Tx−Tg}<30° C. 12. The electrolyte of claim 1, wherein the sulfide-based glass is of a type Li2S—YSn; Li2S—YSn—YOn and combinations thereof, wherein Y is selected from the group consisting of Ge, Si, As, B, or P, and n=2, 3/2 or 5/2. 13. The electrolyte of claim 12, wherein the glass is chemically and electrochemically compatible in contact with lithium metal. 14. The electrolyte of claim 12, wherein the glass is devoid of phosphorous. 15. The electrolyte of claim 1, wherein the glass comprises Li2S and/or Li2O as a glass modifier and one or more of a glass former selected from the group consisting of P2S5, P2O5, SiS2, SiO2, B2S3 and B2O3. 16. The electrolyte of claim 1, wherein the electrolyte is disposed in a battery cell component as a separator adjacent a negative lithium electroactive layer. 17. The electrolyte of claim 1, wherein the electrolyte is disposed in a battery cell as a separator between a positive electrode and a negative lithium electroactive layer. 18. 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. 19. The method of claim 18, wherein the sulfide glass has a glass stability factor {Tx−Tg}<100° C. 20. The method of claim 18, wherein the drawn freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass has, a liquid-like surface;an area of at least 10 cm2;a thickness of no more than 100 μm; anda room temperature intrinsic lithium ion conductivity of at least 10-5 S/cm. 21. A method of making a standalone Li-ion conductive solid electrolyte, the method comprising: providing a Li ion conducting sulfide glass pre-form; andpulling 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. 22. The method of claim 21, wherein the sulfide glass has a glass stability factor {Tx−Tg}<100° C. 23. The method of claim 21, wherein the ribbon is 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; anda room temperature intrinsic lithium ion conductivity of at least 10−5 S/cm.
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이 특허에 인용된 특허 (75)
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