Method of synthesizing a lithium manganese oxide
US4980251A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1989 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Jul 12, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of synthesizing a lithium manganese oxide in accordance with the formula Li.sub.1-x Mn.sub.2 O.sub.4 in which 0.ltoreq.x<1 and having a spinel-type crystal structure includes forming a mixture in finely divided solid form of at least one lithium salt such as Li.sub.2 CO.sub.3 which decomposes when heated in air to form an oxide of lithium, and at least one manganese salt such as MnCO.sub.3 which decomposes when heated in air to form an oxide of manganese. The mixture is heated in an oxidizing atmosphere to a temperature in the range 200.degree.-600.degree. C. to decompose the salts and to obtain the Li.sub.1-x Mn.sub.2 O.sub.4 having a spinel-type crystal structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.