US3939008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of perovskites and perovskite-related compounds as battery cathodes
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1975-02-10
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Granted: 1976-02-17
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Expires: 1995-02-10
Abstract
Abstract A novel battery is disclosed in which the cathode active material is an oxide having a perovskite or perovskite related structure and the general formula ABO 3 , wherein A is an element selected from Group IIA of the Periodic Table of the Elements and B is a non-noble transition metal selected from Group VIIB and VIII of the periodic Table of the Elements. The anode is a metal selected from cadmium, zinc, lead, lithium, sodium and potassium.
Inventors
- 👤 John M. Longo
- 👤 LeRoy R. Clavenna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:15
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/58; H01M6/00; H01M6/14; H01M6/16
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
82 words
An electrical energy storage device comprising: a. a container; b. an electrolyte in said container; c. a metal anode; and d. a cathode-active material, said cathode active material being an oxide of the general formula ABO 3 and having perovskite structure, wherein A is selected from the group consisting of non-transition metals of Group IIA of the Periodic Table of the Elements and B is a non-noble transition metal selected from Groups VIIB and VIII of the Periodic Table of the Elements.
Claim 2
Dependent Claim
82 words
An electrical energy storage device comprising: a. a container; b. an electrolyte in said container; c. a metal anode; and d. a cathode-active material, said cathode active material being an oxide of the general formula ABO 3 and having perovskite structure, wherein A is selected from the group consisting of non-transition metals of Group IIA of the Periodic Table of the Elements and B is a non-noble transition metal selected from Groups VIIB and VIII of the Periodic Table of the Elements.
Claim 3
Dependent Claim
12 words
The device of claim 1 wherein the electrolyte is an aqueous base.
Claim 4
Dependent Claim
18 words
The device of claim 2 wherein the aqueous base is an alkaline metal or alkaline earth metal hydroxide.
Claim 5
Dependent Claim
19 words
The device of claim 1 wherein the metal anode is selected from zinc, lead, cadmium, lithium, sodium and potassium.
Claim 6
Dependent Claim
11 words
The device of claim 1 wherein the metal anode is zinc.
Claim 7
Dependent Claim
28 words
The device of claim 1 wherein the cathode-active material is selected from the group consisting of CaMnO 3 , BaNiO 3 , SrCoO 3 and SrFeO 3 .
Claim 8
Dependent Claim
15 words
The device of claim 6 wherein the said cathode-active material is mixed with carbon black.
Claim 9
Dependent Claim
13 words
The device of claim 7 wherein the cathode-active material is CaMnO 3 .
Claim 10
Dependent Claim
12 words
The device of claim 1 wherein the electrolyte is a non-aqueous electrolyte.
Claim 11
Dependent Claim
12 words
The device of claim 9 wherein the non-aqueous electrolyte is propylene carbonate.
Claim 12
Dependent Claim
38 words
A battery comprising a container, an aqueous basic electrolyte, a metal anode selected from zinc, cadmium or lead and a cathode-active material selected from the perovskites CaMnO 3 , BaNiO 3 , SrCoO 3 and SrFeO 3 .
Claim 13
Dependent Claim
38 words
A battery comprising a container, an aqueous basic electrolyte, a metal anode selected from zinc, cadmium or lead and a cathode-active material selected from the perovskites CaMnO 3 , BaNiO 3 , SrCoO 3 and SrFeO 3 .
Claim 14
Dependent Claim
37 words
A battery comprising a container, a non-aqueous electrolyte, a metal anode selected from lithium, potassium and sodium, and a cathode-active material selected from the perovskites CaMnO 3 , BaNiO 3 , SrCoO 3 and SrFeO 3 .
Claim 15
Dependent Claim
37 words
A battery comprising a container, a non-aqueous electrolyte, a metal anode selected from lithium, potassium and sodium, and a cathode-active material selected from the perovskites CaMnO 3 , BaNiO 3 , SrCoO 3 and SrFeO 3 .
Claim 16
Dependent Claim
25 words
The battery of claim 12 wherein the electrolyte is propylene carbonate, the anode metal is lithium and wherein LiPf 6 is dissolved in the electrolyte.
References Cited (Backward Citations)
US3644147A
Cited
US3804674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-16 | 1979-08-18 | 1980-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-16 | 1983-08-18 | 1984-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-16 | 1987-08-18 | 1988-02-17 | $7700.00 | Window Closed / Lapsed |