Patent US5352548A successfully refreshed from Google Patents.
US5352548A
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Secondary battery
Assignee: Sanyo Electric Co Ltd
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Filing: 1993-06-30
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Granted: 1994-10-04
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Expires: 2013-06-30
Abstract
Abstract A secondary battery is comprised of a positive electrode, a negative electrode formed from a carbon composition intercalating lithium reversibly and a non-aqueous electrolyte. The non-aqueous electrolyte includes a lithium salt and a mixture of a low boiling point solvent having the boiling point of 150° C. or lower and an organic solvent of vinylene carbonate or its derivative. The negative electrode may comprise a graphite, and the positive electrode may comprise a material being selected from a group consisting of metal chalcogen and metal oxide, such as V 2 O 5 , TiS 2 , MoS 2 , LiCoO 2 , LiMnO 2 , LiNiO 2 , LiCrO 2 , LiMn 2 O 4 and LiFeO 2 . The low boiling point solvent may be selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxy ethane and ethoxymethoxy ethane. The derivative may be provided by replacing at least one of two hydrogen atoms of the vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom.
Inventors
- 👤 Masahisa Fujimoto
- 👤 Masatoshi Takahashi
- 👤 Koji Nishio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:39
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0569; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
119 words
A secondary battery, comprising: a positive electrode; a negative electrode having a carbon composition intercalating lithium reversibly, said negative electrode comprising a graphite; and a non-aqueous electrolyte including a lithium salt and a mixture of at least a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom, wherein said low boiling point solvent is selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxyethane and ethoxymethoxy ethane.
Claim 2
Dependent Claim
119 words
A secondary battery, comprising: a positive electrode; a negative electrode having a carbon composition intercalating lithium reversibly, said negative electrode comprising a graphite; and a non-aqueous electrolyte including a lithium salt and a mixture of at least a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom, wherein said low boiling point solvent is selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxyethane and ethoxymethoxy ethane.
Claim 3
Dependent Claim
26 words
A secondary battery according to claim 1, wherein said positive electrode comprises a material being selected from a group consisting of metal chalcogen and metal oxide.
Claim 4
Dependent Claim
51 words
A secondary battery according to claim 2, wherein said material is selected from a group consisting of TiO 2 , V 2 O 5 , TiS 2 , MoS 2 , LiCoO 2 , LiMnO 2 , LiNiO 2 , LiCrO 2 , LiMn 2 O 4 and LiFeO 2 .
Claim 5
Dependent Claim
181 words
A secondary battery, comprising: a positive electrode having one of metal chalcogen and metal oxide selected from a group consisting of TiO 2 , V 2 O 5 , TiS 2 , MoS 2 , LiCoO 2 , LiMnO 2 , LiNiO 2 , LiCrO 2 , LiMn 2 O 4 and LiFeO 2 ; a negative electrode comprising a graphite intercalating lithium reversibly; and a non-aqueous electrolyte including a lithium salt and a mixture of at least a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom of said vinylene carbonate, wherein said mixture includes 20 volume %-80 volume % of said vinylene carbonate or said derivative, and said low boiling point solvent is selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxy ethane and ethoxymethoxy ethane.
Claim 6
Dependent Claim
181 words
A secondary battery, comprising: a positive electrode having one of metal chalcogen and metal oxide selected from a group consisting of TiO 2 , V 2 O 5 , TiS 2 , MoS 2 , LiCoO 2 , LiMnO 2 , LiNiO 2 , LiCrO 2 , LiMn 2 O 4 and LiFeO 2 ; a negative electrode comprising a graphite intercalating lithium reversibly; and a non-aqueous electrolyte including a lithium salt and a mixture of at least a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom of said vinylene carbonate, wherein said mixture includes 20 volume %-80 volume % of said vinylene carbonate or said derivative, and said low boiling point solvent is selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxy ethane and ethoxymethoxy ethane.
Claim 7
Dependent Claim
124 words
A secondary battery, comprising: a positive electrode having one of metal chalcogen and metal oxide; a negative electrode essentially consisting of a graphite intercalating lithium reversibly; and a non-aqueous electrolyte including a lithium salt and a mixture of at least two organic solvents, wherein said mixture is composed of a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom, wherein said mixture includes 20 volume %-80 volume % of said vinylene carbonate or said derivative.
Claim 8
Dependent Claim
124 words
A secondary battery, comprising: a positive electrode having one of metal chalcogen and metal oxide; a negative electrode essentially consisting of a graphite intercalating lithium reversibly; and a non-aqueous electrolyte including a lithium salt and a mixture of at least two organic solvents, wherein said mixture is composed of a low boiling point solvent having a boiling point of 150° C. or lower and an organic solvent defined by one of vinylene carbonate and a derivative provided by replacing at least one of two hydrogen atoms of said vinylene carbonate with one selected from a group consisting of a methyl group, an ethyl group and one halogen atom, wherein said mixture includes 20 volume %-80 volume % of said vinylene carbonate or said derivative.
Claim 9
Dependent Claim
54 words
A secondary battery, according to claim 5, wherein said positive electrode includes a material selected from a group consisting of TiO 2 , V 2 O 5 , TiS 2 , MoS 2 , LiCoO 2 , LiMnO 2 , LiNiO 2 , LiCrO 2 , LiMn 2 O 4 and LiFeO 2 .
Claim 10
Dependent Claim
33 words
A non-aqueous electrolyte according to claim 5, wherein said low boiling point solvent is a solvent selected from a group consisting of dimethyl carbonate, diethyl carbonate, 1,2-dimethoxy ethane, 1,2-diethoxy ethane and ethoxymethoxy ethane.
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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) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
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