US4281047A
Expired / Lapsed
US
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Zinc electrode made from a modified zinc oxide for use in rechargeable electrochemical cells
Assignee: Congress Financial Corp Florida
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Filing: 1980-06-11
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Granted: 1981-07-28
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Expires: 2000-06-11
Abstract
Abstract An improved zinc electrode for use in rechargeable nickel-zinc electrochemical cells having greatly enhanced cycle life is disclosed, which comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has beem formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m 2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.
Inventors
- 👤 Ivan F. Danzig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:02
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/24; H01M4/244; H01M4/36; H01M4/38; H01M4/42; H01M4/62; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
A zinc electrode for use in rechargeable nickel-zinc electrochemical cells having greatly enhanced cycle life which comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has been formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m 2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.
Claim 2
Dependent Claim
95 words
A zinc electrode for use in rechargeable nickel-zinc electrochemical cells having greatly enhanced cycle life which comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has been formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m 2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.
Claim 3
Dependent Claim
36 words
A zinc electrode according to claim 1 wherein the ZnO component has an average surface area of about 3.5 m 2 /gr and contains 0.11 percent by weight Cd and about 0.08 percent by weight Pb.
Claim 4
Dependent Claim
17 words
A zinc electrode according to claim 1 wherein the ZnO component is HORSE HEAD XX-203 zinc oxide.
Claim 5
Dependent Claim
36 words
A zinc electrode according to claim 1 wherein the electrode comprises in admixture 19.6 percent by weight Zn, 78.15 percent by weight ZnO, 0.25 percent by weight HgO and 2.0 percent by weight DAA reaction product.
Claim 6
Dependent Claim
93 words
A rechargeable nickel-zinc electrochemical cell having greatly enhanced cycle life wherein the zinc electrode comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has been formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m 2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.
Claim 7
Dependent Claim
93 words
A rechargeable nickel-zinc electrochemical cell having greatly enhanced cycle life wherein the zinc electrode comprises in admixture Zn, ZnO, HgO and an organic liquid binder produced via the reaction of diacetone acrylamide (DAA) and acrylic acid, which mixture has been formed into a paste and uniformly applied to a suitable current collector, wherein the ZnO component has an average surface area of about 3.5-4.0 m 2 /gr and contains about 0.08 to 0.11 percent by weight Cd and about 0.05 to 0.08 percent by weight Pb, and has a generally rod-like particle structure.
Claim 8
Dependent Claim
38 words
A rechargeable nickel-zinc electrochemical cell according to claim 5 wherein the ZnO component has an average surface area of about 3.5 m 2 /gr and contains 0.11 percent by weight Cd and about 0.08 percent by weight Pb.
Claim 9
Dependent Claim
19 words
A rechargeable nickel-zinc electrochemical cell according to claim 5 wherein the ZnO component is HORSE HEAD XX-203 zinc oxide.
Claim 10
Dependent Claim
38 words
A rechargeable nickel-zinc electrochemical cell according to claim 5 wherein the electrode comprises in admixture 19.6 percent by weight Zn, 78.15 percent by weight ZnO, 0.25 percent by weight HgO and 2.0 percent by weight DAA reaction product.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |