Process for producing lithium-containing composite oxide for positive electrode for lithium secondary battery
US8287828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2006 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Sep 19, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for producing a lithium-containing composite oxide for a positive electrode active material for use in a lithium secondary battery, the oxide having the formula LipQqNxMyOzFa (wherein Q is at least one element selected from the group consisting of titanium, zirconium, niobium and tantalum, N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, alkaline earth metal elements and transition metal elements other than Q and N, 0.9≦p≦1.1, 0≦q<0.03, 0.97≦x≦1.00, 0≦y<0.03, 1.9≦z≦2.1, q+x+y=1 and 0≦a≦0.02), which comprises firing a mixture of a lithium, Q element source and N element sources, and an M element source and/or fluorine source when these elements are present, in an oxygen-containing atmosphere, wherein the Q element source is a Q element compound aqueous solution having a pH of from 0.5 to 11.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.