Active material, manufacturing method for active material, and lithium ion secondary battery
US9093712B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Jul 21, 2011 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Sep 10, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An active material having high capacity and excellent charging/discharging cycle durability at high potential is provided. The active material has a layered structure and is represented by the following composition formula (1):LiyNiaCobMncMdOxFz1Pz2 (1)wherein the element M is at least one element selected from the group consisting of Al, Si, Zr, Ti, Fe, Mg, Nb, Ba and V, and 1.9≦(a+b+c+d+y)≦2.1, 1.0≦y≦1.3, 0<a≦0.3, 0≦b≦0.25, 0.3≦c≦0.7, 0≦d≦0.1, 0.07≦z1≦0.15, 0.01≦z2≦0.1, and 1.9≦(x+z1)≦2.1 are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.