US5478675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary battery
Assignee: Envision AESC Energy Devices Ltd
•
Filing: 1994-12-19
•
Granted: 1995-12-26
•
Expires: 2014-12-19
Abstract
Abstract A nonaqueous electrolyte secondary battery comprising a cathode, an anode, a separator and a nonaqueous electrolyte, wherein a spinel type lithium manganese complex oxide is used as main active substance for the cathode, which is characterized in that a solid state lithium ion conductor is mixed with the main active substance in the cathode.
Inventors
- 👤 Toru Nagaura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
H; H01; H01M; H01M10/00; H01M10/05; H01M10/052; H01M10/0525; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; H01M4/505; H01M4/52; H01M4/525; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
156 words
A nonaqueous electrolyte secondary battery comprising: a cathode; an anode; a separator; a nonaqueous electrolyte; wherein said cathode comprises a main active substance comprising a spinel lithium manganese complex oxide and wherein said cathode comprises a solid state lithium ion conductor that is mixed with the main active substance, further comprising an anode comprising an active substance comprising a carbon material capable of doping and dedoping lithium; and wherein said cathode comprises Li x Co 1-y Ni y O 2 (where 0<x<, 0≦y≦1) as a lithium ion conductor comprising 5 mole % or more and 50 mole % or less of the cathode main active substance; and wherein a molar number a of Mn and a sum b molar number of Co and Ni contained in a cathode active substance layer, and a molar number c of active substance carbon contained in an anode active substance layer confronting the cathode are in the relation of: 0.12≦(a+2b)/2c≦0.17.
Claim 2
Dependent Claim
156 words
A nonaqueous electrolyte secondary battery comprising: a cathode; an anode; a separator; a nonaqueous electrolyte; wherein said cathode comprises a main active substance comprising a spinel lithium manganese complex oxide and wherein said cathode comprises a solid state lithium ion conductor that is mixed with the main active substance, further comprising an anode comprising an active substance comprising a carbon material capable of doping and dedoping lithium; and wherein said cathode comprises Li x Co 1-y Ni y O 2 (where 0<x<, 0≦y≦1) as a lithium ion conductor comprising 5 mole % or more and 50 mole % or less of the cathode main active substance; and wherein a molar number a of Mn and a sum b molar number of Co and Ni contained in a cathode active substance layer, and a molar number c of active substance carbon contained in an anode active substance layer confronting the cathode are in the relation of: 0.12≦(a+2b)/2c≦0.17.
Claim 3
Dependent Claim
38 words
A nonaqueous electrolyte secondary battery as claimed in claim 1, wherein the Li x Co 1-y Ni y O 2 comprising 5 mole % or more and 30 mole % or less of the cathode main active substance.
Claim 4
Dependent Claim
33 words
A nonaqueous electrolyte secondary battery as claimed in claim 2, wherein the Li x Co 1-y Ni y O 2 comprises by 5 mole % or more and 20 mole % or less.
References Cited (Backward Citations)
US5053297A
Cited
US5316875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-25 | 2003-06-26 | 2003-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-25 | 2007-06-26 | 2007-12-26 | $7700.00 | Window Closed / Lapsed |