Rechargeable battery including a Li.sub.1+x Mn.sub.2 O.sub.4 cathode and a carbon anode
US5196279A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Jan 28, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.sub.2 Mn.sub.2 O.sub.4 may also be used as the cathode and this material may be prepared by a novel technique which involves reacting LiMn.sub.2 O.sub.4 with lithium iodide at low temperatures (150.degree. C.), or alternatively by refluxing LiMn.sub.2 O.sub.4 in an acetonitrile solution of lithium iodide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.