Transition metal oxide containing solid solution lithium, non-aqueous electrolyte secondary battery positive electrode and non-aqueous electrolyte secondary battery
US9461299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Jul 2, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A transition metal oxide containing solid solution lithium contains a transition metal oxide containing lithium, which is represented by a chemical formula: Li1.5[NiaCobMnc[Li]d]O3 where 0<a<1.4; 0≦b<1.4; 0<c<1.4; 0.1<d≦0.4; a+b+c+d=1.5; and 1.1≦a+b+c<1.4. The transition metal oxide containing lithium includes: a layered structure region; and a region changed to a spinel structure by being subjected to charge or charge/discharge in a predetermined potential range. When a ratio of an entire change from Li2MnO3 with a layered structure in a region to be changed to the spinel structure to LiMn2O4 with the spinel structure is defined to be 1, a spinel structure change ratio of the transition metal oxide containing lithium is 0.25 or more to less than 1.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.