Lithium secondary battery
US6300009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1999 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Dec 20, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a lithium secondary battery of this invention, an active material of either a positive electrode or a negative electrode includes a composite sulfide having the same crystal structure as MoS.sub.2 or Mo.sub.2 S.sub.3, or the composite sulfide including lithium, and the composite sulfide is represented by a composition formula, M.sub.X Mo.sub.1-X S.sub.Y, wherein M is at least one element selected from the group consisting of Cu, V, Cr, Mn, Fe, Co, Ni, Ti, Y, Cd, In, La, Ce, Pr, Nd, Sm, W, Pt, Pb, Ca, Sr and Ba; 0<X<0.46; and 1.5.ltoreq.Y.ltoreq.2.0. Thus, the lithium secondary battery using a molybdenum composite sulfide as an active material of a positive or negative electrode can attain good charge-discharge cycle performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.