Lithium secondary battery
US6337158B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Dec 16, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium secondary battery of this invention includes a positive electrode using, as an active material, a lithium-containing manganese composite oxide with a spinel structure having a composition, during charge and discharge, represented by a formula, LixMn2-y-zNiyMzO4, in which M is at least one element selected from the group consisting of Fe, Co, Ti, V, Mg, Zn, Ga, Nb, Mo and Cu; 0.02≦×≦1.10, whereas x changes in accordance with occlusion and discharge of lithium ions during charge and discharge; 0.25≦y≦0.60; and 0<z≦0.10. Thus, the invention provides a high-voltage lithium secondary battery exhibiting good charge-discharge cycle performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.