US4687598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrode-active material for electrochemical batteries and method of preparation
Assignee: United States Department of Energy
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Filing: 1986-06-17
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Granted: 1987-08-18
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Expires: 2006-06-17
Abstract
Abstract A battery electrode material comprising a non-stoichiometric electrode-active material which forms a redox pair with the battery electrolyte, an electrically conductive polymer present in the range of from about 2% by weight to about 5% by weight of the electrode-active material, and a binder. The conductive polymer provides improved proton or ion conductivity and is a ligand resulting in metal ion or negative ion vacancies of less than about 0.1 atom percent. Specific electrodes of nickel and lead are disclosed.
Inventors
- 👤 Ravi Varma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:42
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/62; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
129 words
A negative electrode material for an electrochemical battery comprising an electrode-active material selected from the group consisting of lithium, sodium, potassium calcium, magnesium, manganese, zinc, cadmium, copper, silicon, aluminum, lead and alloys thereof, said electrode-active material forms a redox pair with the battery electrolyte, a ligand selected from the group of electrically conductive polymers consisting of tertiary butyl cyclohexyl-15-crown-5, TTF-TCNO and polymers of polyethylene oxide and one or more of LiCF 3 SO 3 , LiBr, Na 2 S, and NaCN present in the range of from about 2% by weight to about 5% by weight of said electrode-active material to provide negative ion vacancies in the range of from about 0.05 to about 0.1 atom percent in the lattice structure of said electrode-active material and a binder material.
Claim 2
Dependent Claim
129 words
A negative electrode material for an electrochemical battery comprising an electrode-active material selected from the group consisting of lithium, sodium, potassium calcium, magnesium, manganese, zinc, cadmium, copper, silicon, aluminum, lead and alloys thereof, said electrode-active material forms a redox pair with the battery electrolyte, a ligand selected from the group of electrically conductive polymers consisting of tertiary butyl cyclohexyl-15-crown-5, TTF-TCNO and polymers of polyethylene oxide and one or more of LiCF 3 SO 3 , LiBr, Na 2 S, and NaCN present in the range of from about 2% by weight to about 5% by weight of said electrode-active material to provide negative ion vacancies in the range of from about 0.05 to about 0.1 atom percent in the lattice structure of said electrode-active material and a binder material.
Claim 3
Dependent Claim
37 words
The electrode material of claim 1, wherein said electrode-active material is a lead compound having an antimony compound present in a concentration of from about 10 -5 to about 10 -3 weight percent of the electrode material.
Claim 4
Dependent Claim
37 words
The electrode material of claim 1, wherein said electrode-active material is a lead compound having a bismuth compound present in a concentration of from about 10 -5 to about 10 -3 weight percent of the electrode material.
Claim 5
Dependent Claim
116 words
A positive electrode material comprising an electrode-active material selected from the class consisting of chalcogen-containing compounds of Ni, Fe, Pb, Co, Cu, and mixtures thereof, a ligand in the form of the electrically conductive polymer present in the range of from about 2% by weight to about 5% by weight of said positive electrode material, wherein said electrodeactive material and said ligand combine to provide metal ion vacancies in the electrode-active material lattice structure in the range of from about 0.05 to about 0.1 atom percent, and a binder, wherein said ligand is selected from the class consisting of polyacetylene polymers having molecular weights in excess of 10,000 and a cyclic polyamine with 3-6 functional groups.
Claim 6
Dependent Claim
116 words
A positive electrode material comprising an electrode-active material selected from the class consisting of chalcogen-containing compounds of Ni, Fe, Pb, Co, Cu, and mixtures thereof, a ligand in the form of the electrically conductive polymer present in the range of from about 2% by weight to about 5% by weight of said positive electrode material, wherein said electrodeactive material and said ligand combine to provide metal ion vacancies in the electrode-active material lattice structure in the range of from about 0.05 to about 0.1 atom percent, and a binder, wherein said ligand is selected from the class consisting of polyacetylene polymers having molecular weights in excess of 10,000 and a cyclic polyamine with 3-6 functional groups.
Claim 7
Dependent Claim
35 words
The electrode material of claim 4, wherein said electrode-active material is a nickel compound having a cobalt compound present in the range of from greater than about 3 mole percent to about 5 mole percent.
Claim 8
Dependent Claim
40 words
The electrode material of claim 4, wherein the nickel and cobalt compounds are hydroxides, the cobalt is about 5 mole percent and thallium dopant is present in a concentration of from about 10 -3 weight percent of the electrode material.
Claim 9
Dependent Claim
16 words
The electrode material of claim 4, wherein the electrode-active material is a compound of alpha nickel.
Claim 10
Dependent Claim
63 words
The electrode material of claim 4, wherein the electrode-active material is a compound of alpha nickel and cobalt, with said cobalt compound being present in the range of from greater than about 3 mole percent to about 5 mole percent and a thallium compound present in a concentration of from about 10 -5 to about 10 -3 weight percent of the electrode material.
Claim 11
Dependent Claim
35 words
The electrode material of claim 4, wherein said electrode-active material is lead oxide having antimony oxide present in a concentration of from about 10 -5 to about 10 -3 weight percent of the electrode material.
Claim 12
Dependent Claim
35 words
The electrode material of claim 4, wherein said electrode-active material is lead oxide having bismuth oxide present in a concentration of from about 10 -5 to about 10 -3 weight percent of the electrode material.
Claim 13
Independent Claim
205 words
A method of preparing a battery electrode comprising providing an electrode-active material selected from chalogen-containing compounds of Ni, Fe, Pb, Co, Cu and mixtures thereof for a positive electrode and selected from the group consisting of Li, Na, K, Ca, Mg, Mn, Zn, Cd, Cu, Si, Al, Pb and alloys thereof for the negative electrode, mixing a ligand in the form of an electrically conductive polymer with the electrode-active material wherein the polymer is present in the range of from about 2% by weight to about 5% by weight of said electrode-active material, to provide metal ion or negative ion vacancies in the range of from about 0.05 to about 0.1 atom percent, said ligands for a positive electrode being selected from the class consisting of polyacetylene polymers having molecular weights in excess of 10,000 and cyclic polyamide with 3-5 functional groups and wherein said ligands for a negative electrode being selected from the class consisting of tertiary butyl cyclohexyl-15-crown-5, TTF-TCNQ, and polymers of polyethylene oxide and one or more of LiCF 3 SO 3 , LiBr, Na 2 S, and NaCN, mixing a binder with the electrode-active material and polymer, and forming the mixed electrode-active material and polymer and binder into a battery electrode.
Claim 14
Independent Claim
205 words
A method of preparing a battery electrode comprising providing an electrode-active material selected from chalogen-containing compounds of Ni, Fe, Pb, Co, Cu and mixtures thereof for a positive electrode and selected from the group consisting of Li, Na, K, Ca, Mg, Mn, Zn, Cd, Cu, Si, Al, Pb and alloys thereof for the negative electrode, mixing a ligand in the form of an electrically conductive polymer with the electrode-active material wherein the polymer is present in the range of from about 2% by weight to about 5% by weight of said electrode-active material, to provide metal ion or negative ion vacancies in the range of from about 0.05 to about 0.1 atom percent, said ligands for a positive electrode being selected from the class consisting of polyacetylene polymers having molecular weights in excess of 10,000 and cyclic polyamide with 3-5 functional groups and wherein said ligands for a negative electrode being selected from the class consisting of tertiary butyl cyclohexyl-15-crown-5, TTF-TCNQ, and polymers of polyethylene oxide and one or more of LiCF 3 SO 3 , LiBr, Na 2 S, and NaCN, mixing a binder with the electrode-active material and polymer, and forming the mixed electrode-active material and polymer and binder into a battery electrode.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
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