US4233377A
Expired / Lapsed
US
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Electrical storage device
Assignee: BRITISH COLUMBIA DEVELOPMENT Corp 272 - 200 GRANVILL STREET VANCOUVER BRITISH COLUMBIA
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Filing: 1978-07-06
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Granted: 1980-11-11
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Expires: 1998-07-06
Abstract
Abstract A battery having a layered transition metal dichalcogenide cathode in which has been incorporated by intercalation a relatively small amount of a dopant material having a relatively large atomic or ionic size so as to spread apart adjacent molecular layers in the cathode material and permit more rapid intercalation of cations during the battery discharge, an anode, and an electrolyte which will permit the migration of cations from the anode to the cathode. The preferred dopants are sodium or potassium and the invention is chiefly applicable to a battery having a molybdenum disulphide cathode.
Inventors
- 👤 Rudolph R. Haering
- 👤 James A. R. Stiles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:51
CPC Classifications
H; H01; H01M; H01M6/00; H01M6/14; H01M6/16; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M4/581; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/824
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
138 words
A battery comprising: (a) an anode consisting essentially of a material selected from the group consisting of lithium and magnesium, (b) a cathode consisting essentially of a layered transition metal dichalcogenide which has been pretreated by intercalating a relatively small amount of a suitable selected dopant having a relatively large atomic molecular or ionic radius with respect to the radius of cations migrating to and intercalating in the cathode during discharge of the battery, so as to permit more rapid intercalation of the cathode by said cations, said layered transition metal dichalcogenide being selected from the group consisting of molybdenum disulphide and titanium disulphide, said dopant being selected from the group consisting of sodium, potassium, cesium and rubidium, and (c) a suitable selected liquid electrolyte in which the migration of said cations occurs during discharge of the battery.
Claim 2
Dependent Claim
138 words
A battery comprising: (a) an anode consisting essentially of a material selected from the group consisting of lithium and magnesium, (b) a cathode consisting essentially of a layered transition metal dichalcogenide which has been pretreated by intercalating a relatively small amount of a suitable selected dopant having a relatively large atomic molecular or ionic radius with respect to the radius of cations migrating to and intercalating in the cathode during discharge of the battery, so as to permit more rapid intercalation of the cathode by said cations, said layered transition metal dichalcogenide being selected from the group consisting of molybdenum disulphide and titanium disulphide, said dopant being selected from the group consisting of sodium, potassium, cesium and rubidium, and (c) a suitable selected liquid electrolyte in which the migration of said cations occurs during discharge of the battery.
Claim 3
Dependent Claim
15 words
A battery as defined in claim 1, wherein the cathode consists essentially of molybdenum disulphide.
Claim 4
Dependent Claim
12 words
A battery as defined in claim 2, wherein the cation is lithium.
Claim 5
Dependent Claim
21 words
A battery as defined in claim 3 where the dopant material is selected from the group consisting of sodium and potassium.
Claim 6
Dependent Claim
32 words
A battery as defined in claim 3 wherein the cathode material has the general Formula A y MoS 2 where A is the dopant and y has a value of about 0.1.
Claim 7
Dependent Claim
12 words
A battery as defined in claim 2, wherein the cation is Magnesium.
Claim 8
Dependent Claim
21 words
A battery as defined in claim 6 wherein the dopant material is selected from the group consisting of sodium and potassium.
Claim 9
Dependent Claim
32 words
A battery as defined in claim 7 wherein the cathode material has the general Formula A y MoS 2 where A is the dopant and y has a value of about 0.1.
Claim 10
Dependent Claim
32 words
A battery as defined in claim 1 wherein the cathode material has the general formula A y TiS 2 , where A is the dopant and y lies in the range 0.05<y<0.4.
Claim 11
Dependent Claim
32 words
A battery as defined in claim 1 wherein the cathode material has the general formula A y MoS 2 , where A is the dopant and y lies in the range 0.05<y<0.4.
Claim 12
Dependent Claim
32 words
A battery as defined in claim 1 wherein the cathode material has the general formula A y TiS 2 where A is the dopant and y has a value of about 0.1.
Claim 13
Dependent Claim
12 words
A battery as defined in claim 11, wherein the cation is lithium.
Claim 14
Dependent Claim
79 words
In a battery comprising an anode, a cathode consisting essentially of a layered transition metal dichalcogenide, and an electrolyte, said battery being of the type wherein cations migrate through said electrolyte to and intercalate in said cathode during discharge thereof, the improvement wherein said layered transition metal dichalcogenide has been pre-treated by intercalating a relatively small amount of a suitable selected dopant having a relatively large atomic molecular or ionic radius with respect to the radius of said cations.
Claim 15
Dependent Claim
79 words
In a battery comprising an anode, a cathode consisting essentially of a layered transition metal dichalcogenide, and an electrolyte, said battery being of the type wherein cations migrate through said electrolyte to and intercalate in said cathode during discharge thereof, the improvement wherein said layered transition metal dichalcogenide has been pre-treated by intercalating a relatively small amount of a suitable selected dopant having a relatively large atomic molecular or ionic radius with respect to the radius of said cations.
Claim 16
Dependent Claim
15 words
A battery as defined in claim 13, wherein the cathode consists essentially of molybdenum disulphide.
Claim 17
Dependent Claim
12 words
A battery as defined in claim 14, wherein the cation is lithium.
Claim 18
Dependent Claim
23 words
A battery as defined in claim 15, wherein the dopant material is selected from the group consisting of sodium, potassium, cesium and rubidium.
Claim 19
Dependent Claim
21 words
A battery as defined in claim 15, wherein the dopant material is selected from the group consisting of sodium and potassium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-11 | 1984-05-12 | 1984-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-11 | 1988-05-12 | 1988-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-11 | 1992-05-12 | 1992-11-11 | $7700.00 | Window Closed / Lapsed |