Monaqueous electrolyte secondary battery and process for producing positive active materials
US5286582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Nov 1, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A nonaqueous electrolyte secondary battery uses lithium or a substance capable of absorbing and releasing lithium as a negative active material of a negative electrode, and uses a layer-like composite oxide of the formula Li.sub.x M.sub.y L.sub.z O.sub.2, where M is one or more transistion metal elements selected from Groups IIIB, IVB, VB, VIB, VIIB and VIII of the periodic table, L is one or more elements selected from nonmetal, metalloid and semimetal elements selected from Groups IIIA, IVA and VA of the periodic table, alkaline earth metal elements and metal elements of Zn and Cu as a positive active material constituting a positive electrode. The polarization (internal resistance) at the time of charging and discharging is reduced and an effective charging-discharging capacity is enhanced. Charging and discharging at a large current become easy, and a cycle deterioration is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.