Active substances, electrodes, nonaqueous electrolyte secondary cells, and a process for fabricating the active substances
US6368749B1 · kind B1 · utility
17Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2000 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Sep 14, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a positive electrode of a nonaqueous electrolyte secondary cell which is prepared using an active substance containing a composition of LiNiaCobMcO2 (a+b+c=1;0≦c≦0.5) wherein M is at least one metal selected from among Mn, Fe, Zn, Ti, Cr, Mg, Al, Cu, or Ga and a composition of AlX(SO4)2 wherein X is at least one material selected from among Na, Rb, Cs, or NH4. This enables the secondary cell to diminish the reduction of a cell capacity when allowed to store and thus the storage characteristics of the secondary cell is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.