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US4444857A
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Electrochemical cell including a solid electrolyte made from a cation conductive vitreous compound
Assignee: Gipelec SA
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Filing: 1982-06-08
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Granted: 1984-04-24
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Expires: 2002-06-08
Abstract
Abstract An electrochemical cell having a lithium based negative active material, an electrolyte in the form of a vitreous cation conductive compound having a formula: aP2S5, bLi2S, cLiX, where X stands for chlorine, bromine or iodine, and a, b, and c are numbers chosen in such a manner that b/(a+b) lies in the range 0.61 to 0.70 and c/(a+b+c) is less than or equal to the maximum solubility in the vitreous phase of LiX in the compound aP2S5, bLi2S, and a positive active material in the form of a compressed powder with particles of the electrolyte dispersed throughout said positive active material. The positive active material is chosen from the group constituted by: (CHx; CudO(PO4)2; V6O13; V2S5; MoS3; CuS; S; CuO; Cu3B2O6; FeS2; Pb3O4; Bi2O3; PbO; BiO(CrO4)2; AgBi(CrO4)2; I2; MoO3; WO3; TiS2; NiPS3; copper bismuthate; and lead bismuthate.
Inventors
- 👤 Jean-Pierre Duchange
- 👤 Jean-Paul Gabano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:49
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/18; H01M4/00; H01M4/02; H01M4/36; H01M4/58; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
122 words
An electrochemical cell having a lithium based negative active material, an electrolyte in the form of a vitreous cation conductive compound having a formula: aP 2 S 5 , bLi 2 S, cLiX, where X stands for chlorine, bromine or iodine, and a, b, and c are numbers chosen in such a manner that b/(a+b) lies in the range 0.61 to 0.70 and c/(a+b+C) is less than or equal to the maximum solubility in the vitreous phase of LiX in the compound aP 2 S 5 , bLi 2 S, and a positive active material, wherein the improvement comprises: said positive active material is in the form of a compressed powder with particles of the electrolyte dispersed throughout said positive active material.
Claim 2
Dependent Claim
122 words
An electrochemical cell having a lithium based negative active material, an electrolyte in the form of a vitreous cation conductive compound having a formula: aP 2 S 5 , bLi 2 S, cLiX, where X stands for chlorine, bromine or iodine, and a, b, and c are numbers chosen in such a manner that b/(a+b) lies in the range 0.61 to 0.70 and c/(a+b+C) is less than or equal to the maximum solubility in the vitreous phase of LiX in the compound aP 2 S 5 , bLi 2 S, and a positive active material, wherein the improvement comprises: said positive active material is in the form of a compressed powder with particles of the electrolyte dispersed throughout said positive active material.
Claim 3
Dependent Claim
95 words
A cell according to claim 1, wherein the positive active material is chosen from the group consisting of: (CF) x ; Cu 4 O(PO 4 ) 2 ; V 6 O 13 ; V 2 S 5 ; MoS 3 ; CuS; S; CuO; Cu 3 B 2 O 6 ; FeS 2 ; Pb 3 O 4 ; Bi 2 O 3 ; PbO; BiO(CrO 4 ) 2 ; AgBi(CrO 4 ) 2 ; I 2 ; MoO 3 ; WO 3 ; TiS 2 ; NiPS 3 ; copper bismuthate; and lead bismuthate.
Claim 4
Dependent Claim
20 words
A cell according to claim 1, wherein the positive active material includes between 20% and 80% by volume solid electrolyte.
Claim 5
Dependent Claim
19 words
A cell according to claim 1, wherein the positive active material contains particles of an electron conductor dispersed therein.
Claim 6
Dependent Claim
34 words
A cell according to claim 1, wherein the positive active material is chosen from the group consisting of lead oxides, copper bismuthate, and lead bismuthate, and wherein the active material contains particles of silica.
Claim 7
Dependent Claim
39 words
A cell according to claim 5, wherein the positive active material comprises a mixture of the following items in powder form, the percentages being by weight: ______________________________________
Bi.sub.2 O.sub.4 Cu, 0.7 SiO.sub.2
68%
Solid electrolyte
25%
Graphite 7%
______________________________________
Claim 8
Dependent Claim
18 words
A cell according to claim 1, wherein the electrolyte has the following formula: 0.18P.sub.2 S.sub.5, 0.37Li.sub.2 S, 0.45LiI.
References Cited (Backward Citations)
US4258109A
Cited
US4331750A
Cited
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
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