US4675260A
Expired / Lapsed
US
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Lithium battery including vanadium pentoxide base amorphous cathode active material
Assignee: NTT Inc
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Filing: 1985-11-08
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Granted: 1987-06-23
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Expires: 2005-11-08
Abstract
Abstract A lithium battery essentially consisting of an amorphous cathode active material mainly composed of V2O5 and prepared by adding with at least one first additive selected from the group consisting of P2O5, TeO2, GeO2, Sb2O3, Bi2O3 and B2O3 and/or at least one second additive selected from the group consisting of MoO3 and WO3, heating to melt the admixture and then quenching the molten admixture; an anode active material made of metallic lithium or a lithium alloy; and an electrolyte made of a mixture of a aprotic solvent and a lithium salt. The battery is a small-sized and light-weight secondary battery having a high energy density and being improved in charge-discharge cycle lifetime.
Inventors
- 👤 Yoji Sakurai
- 👤 Toshiro Hirai
- 👤 Shigeto Okada
- 👤 Takeshi Okada
- 👤 Jun-ichi Yamaki
- 👤 Hideaki Ohtsuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:14
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/485; H01M10/00; H01M10/05; H01M10/052; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0568; H01M10/0569; H01M4/13; H01M4/131; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
137 words
A lithium battery comprising: a cathode active material made of an amorphous material prepared by mixing V 2 O 5 with 1 mol % to 40 mol % of at least one metal oxide selected from the group consisting of P 2 O 5 , TeO 2 , GeO 2 , Sb 2 O 3 , Bi 2 O 3 and B 2 O 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 2
Dependent Claim
137 words
A lithium battery comprising: a cathode active material made of an amorphous material prepared by mixing V 2 O 5 with 1 mol % to 40 mol % of at least one metal oxide selected from the group consisting of P 2 O 5 , TeO 2 , GeO 2 , Sb 2 O 3 , Bi 2 O 3 and B 2 O 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 3
Dependent Claim
129 words
The lithium battery as claimed in claim 1, wherein said amorphous cathode active material is selected from the group consisting of V 2 O 5 --P 2 O 5 , V 2 O 5 --TeO 2 , V 2 O 5 --Sb 2 O 3 , V 2 O 5 --Bi 2 O 3 , V 2 O 5 --B 2 O 3 , V 2 O 5 --TeO 2 --Sb 2 O 3 , V 2 O 5 --TeO 2 --Bi 2 O 3 , V 2 O 5 --TeO 2 --B 2 O 3 , V 2 O 5 --GeO 2 --Sb 2 O 3 , V 2 O 5 --GeO 2 --Bi 2 O 3 and V 2 O 5 --GeO 2 --B 2 O 3
Claim 4
Dependent Claim
42 words
The lithium battery as claimed in claim 1, wherein said aprotic solvent of said electrolyte is at least one selected from the group consisting of propylene carbonate, 2-methyltetrahydrofuran, dioxolane, tetrahydrofuran, 1, 2-dimethoxyethane, ethylene carbonate, Y-butyrolactone, dimethyl sulfoxide, acetonitrile, formamide, dimethylformamide and nitromethane.
Claim 5
Dependent Claim
44 words
The lithium battery as claimed in claim 1, wherein said lithium salt of said electrolyte is at least one selected from the group consisting of LiBF 4 , LiClO 4 , LiPF 6 , LiCl, LiAlCl 4 , LiAsF 6 , LiSbF 6 .
Claim 6
Dependent Claim
90 words
A lithium battery comprising: a cathode active material made of an amorphous V 2pl O 5 material prepared by heating to melt V 2 O 5 followed by quenching at a rte of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 7
Dependent Claim
90 words
A lithium battery comprising: a cathode active material made of an amorphous V 2pl O 5 material prepared by heating to melt V 2 O 5 followed by quenching at a rte of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 8
Dependent Claim
43 words
The lithium battery as claimed in claim 5, wherein said aprotic organic solvent of said electrolyte is at least one selected from the group consisting of propylene carbonate, 2-methyltetrahydrofuran, dioxolane, tetrahydrofuran, 1, 2-dimethoxyethane, ethylene carbonate, γ-butyrolactone, dimethyl sulfoxide, acetonitrile, formamide, dimethylformamide and nitromethane.
Claim 9
Dependent Claim
44 words
The lithium battery as claimed in claim 5, wherein said lithium salt of said electrolyte is at least one selected from the group consisting of LiBF 4 , LiClO 4 , LiPF 6 , LiCl, LiAlCl 4 , LiAsF 6 , LiSbF 6 .
Claim 10
Dependent Claim
120 words
A lithium battery comprising: a cathode active material made of an amorphous V 2 O 5 material prepared by mixing V 2 O 5 with 5 mol% to 90 mol% of at least one metal oxide selected from the group consisting of MoO 3 and WO 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 11
Dependent Claim
120 words
A lithium battery comprising: a cathode active material made of an amorphous V 2 O 5 material prepared by mixing V 2 O 5 with 5 mol% to 90 mol% of at least one metal oxide selected from the group consisting of MoO 3 and WO 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 12
Dependent Claim
35 words
The lithium battery as claimed in claim 8, wherein said amorphous cathode active material is selected from the group consisting of V 2 O 5 --MoO 3 and V 2 O 5 --WO 3 .
Claim 13
Dependent Claim
42 words
The lithium battery as claimed in claim 8, wherein said aprotic solvent of said electrolyte is at least one selected from the group consisting of propylene carbonate, 2-methyltetrahydrofuran, dioxolane, tetrahydrofuran, 1, 2-dimethoxyethane, ethylene carbonate, γ-butyrolactone, dimethyl sulfoxide, acetonitrile, formamide, dimethylformamide and nitromethane.
Claim 14
Dependent Claim
44 words
The lithium battery as claimed in claim 8, wherein said lithium salt of said electrolyte is at least one selected from the group consisting of LiBF 4 , LiClO 4 , LiPF 6 , LiCl, LiAlCl 4 , LiAsF 6 , LiSbF 6 .
Claim 15
Dependent Claim
162 words
A lithium battery comprising: a cathode active material made of an amorphous material prepared by mixing V 2 O 5 with 1 mol% to 39 mol% of at least one first additive selected from the group consisting of P 2 O 5 , TeO 2 , GeO 2 , Sb 2 O 3 , Bi 2 O 3 and B 2 O 3 and further added with 1 mol% to 25 mol% of at least one second additive selected from the group consisting of MoO 3 and WO 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 16
Dependent Claim
162 words
A lithium battery comprising: a cathode active material made of an amorphous material prepared by mixing V 2 O 5 with 1 mol% to 39 mol% of at least one first additive selected from the group consisting of P 2 O 5 , TeO 2 , GeO 2 , Sb 2 O 3 , Bi 2 O 3 and B 2 O 3 and further added with 1 mol% to 25 mol% of at least one second additive selected from the group consisting of MoO 3 and WO 3 , heating to melt the admixture and then quenching the molten admixture at a rate of at least 10 2 ° C./sec; an anode active material made of at least one selected from the group consisting of metallic lithium and lithium alloys; and an electrolyte selected from the group consisting of mixtures of aprotic organic solvents with lithium salts, molten salts containing Li ions as the conductors, and solid electrolytes of Li ions.
Claim 17
Dependent Claim
145 words
The lithium battery as claimed in claim 12, wherein said amorphous cathode active material is selected from the group consisting of V 2 O 5 --P 2 O 5 --WO 3 , V 2 O 5 --P 2 O 5 --MoO 3 , V 2 O 5 --TeO 2 --WO 3 , V 2 O 5 --TeO 2 --MoO 3 , V 2 O 5 --GeO 2 --WO 3 , V 2 O 5 --GeO 2 --MoO 3 , V 2 O 5 --Sb 2 O 3 --WO 3 , V 2 O 5 --Sb 2 O 3 --MoO 3 , V 2 O 5 --Bi 2 O 3 --WO 3 , V 2 O 5 --Bi 2 O 3 --MoO 3 , V 2 O 5 --B 2 O 3 --WO 3 and V 2 O 5 --B 2 O 3 --MoO 3 .
Claim 18
Dependent Claim
42 words
The lithium battery as claimed in claim 12, wherein said aprotic solvent of said electrolyte is at least one selected from the group consisting of propylene carbonate, 2-methltetrahydrofuran, dioxolane, tetrahydrofuran, 1, 2-dimethoxyethane, ethylene carbonate, γ-butyrolacton, dimethyl sulfoxide, acetonitrile, formamide, dimethylformamide and nitromethane.
Claim 19
Dependent Claim
44 words
The lithium battery as claimed in claim 12, wherein said lithium salt of said electrolyte is at least one selected from the group consisting of LiBF 4 , LiClO 4 , LiPF 6 , LiCl, LiAlCl 4 , LiAsF 6 , LiSbF 6 .
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) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |