Non-aqueous electrolyte secondary battery including positive and negative electrodes
US6514638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1999 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Nov 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A non-aqueous electrolyte secondary battery having a large capacity with improved charge/discharge characteristics is provided.The non-aqueous electrolyte secondary battery is fabricated by combining a positive electrode (4) and a negative electrode (2) so that the relationship:0.9≦Kp/Kn≦1.1is satisfied, where an initial efficiency of the positive electrode (4) is represented by Kp and an initial efficiency of the negative electrode (2) is represented by Kn. An active material of the positive electrode (4) preferably contains a lithium composite oxide having a composition of LixNiyMzO2 (0.8<×<1.5, 0.8<y+z<1.2, 0≦z<0.35; M is at least one element selected from Co, Mg, Ca, Sr, Al, Mn and Fe).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.