Patent EP0482287A1 successfully refreshed from Google Patents.
EP0482287A1
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EP
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A non-aqueous secondary electrochemical battery
Assignee: Panasonic Holdings Corp
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Filing: 1991-04-30
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Granted: —
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Expires: 2011-04-30
Abstract
Abstract A non-aqueous secondary electrochemical battery (1) which comprises a complex oxide containing lithium for a cathode (6), a carbon material for an anode (4), and a mixed solvent for an electrolyte is disclosed. The mixed solvent is obtained by dissolving an inorganic salt in a mixture of a cyclic ester and a chain ester. The cyclic ester is selected from the group consisting of ethylene carbonate, propylene carbonate, butylene carbonate, and y-butyrolactone. The chain ester is selected from the group consisting of diethyl carbonate, dimethyl carbonate, ethyl formate, methyl formate, ethyl acetate, methyl acetate, and dimethyl sulfoxide. In this way, a non-aqueous secondary electrochemical battery having improved cycle life capabilities, discharge performance, and low temperature performance can be obtained.
Inventors
- 👤 Hiromi Okuno
- 👤 Hizuru Koshina
- 👤 Akiyoshi Morita
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 23:42
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M10/056; H01M10/0564; H01M10/0566; H01M10/0569; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M4/505; H01M4/52; H01M4/525; H01M4/58; H01M4/583; H01M4/587; H01M10/0568; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
47 words
A non-aqueous secondary electrochemical battery comprising a complex oxide containing lithium for a cathode, a carbon material for an anode, and a non-aqueous electrolyte, wherein said non-aqueous electrolyte is obtained by dissolving an inorganic salt in a mixed solvent containing a cyclic ester and a chain ester.
Claim 2
Dependent Claim
47 words
A non-aqueous secondary electrochemical battery comprising a complex oxide containing lithium for a cathode, a carbon material for an anode, and a non-aqueous electrolyte, wherein said non-aqueous electrolyte is obtained by dissolving an inorganic salt in a mixed solvent containing a cyclic ester and a chain ester.
Claim 3
Dependent Claim
31 words
A non-aqueous secondary electrochemical battery according to claim 1, wherein said cyclic ester is at least one selected from the group consisting of ethylene carbonate, propylene carbonate, butylene carbonate, and y-butyrolactone.
Claim 4
Dependent Claim
38 words
A non-aqueous secondary electrochemical battery according to claim 1, wherein said chain ester is at least one selected from the group consisting of diethyl carbonate, dimethyl carbonate, ethyl formate, methyl formate, ethyl acetate, methyl acetate, and dimethyl sulfoxide.
Claim 5
Dependent Claim
35 words
A non-aqueous secondary electrochemical battery according to claim 1, wherein said inorganic salt is at least one selected from the group consisting of lithium tetrafluoroborate, lithium hexafluorophosphate, lithium hex- afluoroacetate, lithium trifluoromethanesulfonate, and lithium perchlorate.
Claim 6
Dependent Claim
60 words
A non-aqueous secondary electrochemical battery according to claim 1, wherein said complex oxide containing lithium is of the formula Li 1-x MO 2 (0≦x<l), wherein M is a transition metal selected from the group consisting of Co, Ni, Fe, and Mn, or a plurality of transition metals including one selected from the group consisting of Co, Ni, Fe, and Mn.
Claim 7
Dependent Claim
33 words
A non-aqueous secondary electrochemical battery according to claim 1, wherein a mixing ratio of said chain ester to cyclic ester (chain ester/cyclic ester) is in the range of 1 to 9 by volume.
Claim 8
Dependent Claim
76 words
A non-aqueous secondary electrochemical battery comprising Li 1-x MO2 (0≦x<1) for a cathode, a carbon material for an anode, and a non-aqueous electrolyte, wherein M is Co or part of Co is replaced by another kind of transition metal, and wherein said non-aqueous electrolyte is obtained by dissolving at least one inorganic salt selected from the group consisting of lithium tetrafluoroborate, lithium hexafluorophosphate, and lithium perchlorate in a mixed solvent containing ethylene carbonate and diethyl carbonate.
Claim 9
Dependent Claim
76 words
A non-aqueous secondary electrochemical battery comprising Li 1-x MO2 (0≦x<1) for a cathode, a carbon material for an anode, and a non-aqueous electrolyte, wherein M is Co or part of Co is replaced by another kind of transition metal, and wherein said non-aqueous electrolyte is obtained by dissolving at least one inorganic salt selected from the group consisting of lithium tetrafluoroborate, lithium hexafluorophosphate, and lithium perchlorate in a mixed solvent containing ethylene carbonate and diethyl carbonate.
Claim 10
Dependent Claim
32 words
A non-aqueous secondary electrochemical battery according to claim 7, wherein a mixing ratio of said ethylene carbonate and diethyl carbonate (diethylcarbonate/ethylene carbonate) is in the range of 1 to 9 by volume.
Claim 11
Dependent Claim
46 words
A non-aqueous secondary electrochemical battery according to claim 7, wherein a mixing ratio of said diethyl carbonate to ethylene carbonate (diethyl carbonate/ethylene carbonate) is in the range of 1 to 4 by volume, and said lithium hexafluorophosphate is dissolved as a solute in said mixed solvent.
References Cited (Backward Citations)
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