Positive electrode active material for electric device, positive electrode for electric device, and electric device
US9496065B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Jan 10, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material is provided for an electric device that contains a first active material comprising a transition metal oxide represented by formula (1): Li1.5[NiaCobMnc[Li]d]O3 (where a, b, c, and d satisfy the relationships: 0<d<0.5; a+b+c+d=1.5; and 1.0<a+b+c<1.5); and a second active material comprising a spinel transition metal oxide that has a crystal structure assigned to the space group Fd-3m, represented by formula (2): LiMa′Mn2−a′O4 (where M indicates at least one metal element having an atomic valence of 2-4, and a′ satisfies the relationship 0=a′<2.0). The fraction content of the first and second active material by mass ratio satisfies the relationship (3): 100:0 A:MB A indicates the mass of the first active material and MB indicates the mass of the second active material).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.