Patent US5196279A successfully refreshed from Google Patents.
US5196279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable battery including a Li1+x Mn2 O4 cathode and a carbon anode
Assignee: Valence Technology Inc
•
Filing: 1991-01-28
•
Granted: 1993-03-23
•
Expires: 2011-01-28
Abstract
Abstract A lithium metal free non-aqueous secondary battery including a carbon anode and a lithium manganese oxide cathode is described. In operation, lithium from the lithium manganese oxide positive electrode intercalates with the carbon negative electrode and in this manner lithium ions are rocked back and forth during charge-discharge cycling. Lithium manganese oxide of the formula Li 2 Mn 2 O 4 may also be used as the cathode and this material may be prepared by a novel technique which involves reacting LiMn 2 O 4 with lithium iodide at low temperatures (150° C.), or alternatively by refluxing LiMn 2 O 4 in an acetonitrile solution of lithium iodide.
Inventors
- 👤 Jean-Marie Tarascon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:32
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/13; H01M4/131; C; C01; C01G; C01G45/00; C01G45/12; C01G45/1221; C01G45/1235; C01G45/1242; H01M10/00; H01M10/05; H01M4/36; H01M4/48; H01M4/485; H01M4/50; H01M4/505; H01M4/58; H01M4/583; H01M4/587; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2006/00; C01P2006/42; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
51 words
Lithium metal free non-aqueous secondary battery comprising a carbon anode of the formula Li x C 6 wherein x ranges from 0 to 1, an electrolyte, and a cathode consisting essentially of lithium manganese oxide of the formula Li x Mn 2 O 4 wherein x ranges from 0 to 2.
Claim 2
Dependent Claim
51 words
Lithium metal free non-aqueous secondary battery comprising a carbon anode of the formula Li x C 6 wherein x ranges from 0 to 1, an electrolyte, and a cathode consisting essentially of lithium manganese oxide of the formula Li x Mn 2 O 4 wherein x ranges from 0 to 2.
Claim 3
Dependent Claim
26 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and a lithium manganese oxide positive electrode.
Claim 4
Dependent Claim
26 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and a lithium manganese oxide positive electrode.
Claim 5
Dependent Claim
47 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and (b) a positive intercalation electrode consisting essentially of lithium manganese oxide of the formula Li x Mn 2 O 4 wherein x ranges from 0 to 2.
Claim 6
Dependent Claim
47 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and (b) a positive intercalation electrode consisting essentially of lithium manganese oxide of the formula Li x Mn 2 O 4 wherein x ranges from 0 to 2.
Claim 7
Dependent Claim
12 words
Battery in accordance with claim 3 wherein the anode is free carbon.
Claim 8
Dependent Claim
18 words
Battery in accordance with claim 3 wherein the electrolyte is a solution of lithium perchlorate in propylene carbonate.
Claim 9
Dependent Claim
17 words
Battery in accordance with claim 3 wherein the electrolyte is stable upon oxidation up to 4.5 volts.
Claim 10
Dependent Claim
20 words
Battery in accordance with claim 4 wherein the anode is selected from the group consisting of graphite and petroleum coke.
Claim 11
Dependent Claim
49 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and a positive intercalation electrode consisting essentially of a mixture of lithium manganese oxides of the formula Li 1+x Mn 2 O 4 wherein x ranges from 0 to 1.
Claim 12
Dependent Claim
49 words
Lithium metal free non-aqueous secondary battery comprising an electrolyte and two air-stable electrodes consisting of a carbon negative electrode and a positive intercalation electrode consisting essentially of a mixture of lithium manganese oxides of the formula Li 1+x Mn 2 O 4 wherein x ranges from 0 to 1.
References Cited (Backward Citations)
US4246253A
Cited
US4304825A
Cited
US4423125A
Cited
US4828834A
Cited
US5053297A
Cited
US5110696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-03-22 | 1996-09-21 | 1997-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-22 | 2000-09-21 | 2001-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-22 | 2004-09-21 | 2005-03-23 | $7700.00 | Window Closed / Lapsed |