Positive electrode active material for lithium secondary battery, method for preparing the same, and secondary battery including the same
US10651500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2016 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jul 28, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention relates to a positive electrode active material for a secondary battery, a method for preparing the same, and a secondary battery including the same, and more particularly to a positive electrode active material for a secondary battery, which includes lithium transition metal oxide particles represented by Formula 1; and lithium metal phosphate nanoparticles disposed on the surface of the lithium transition metal oxide particles and represented by Formula 2, a method for preparing the same, and a lithium secondary battery including the same Li(1+a)(Ni1−b−cMbCoc)O2 [Formula 1]In which, M is at least one metal selected from the group consisting of Mn, Al, Cu, Fe, Mg, Cr, Sr, V, Sc and Y, 0≤a≤0.2, 0≤b≤1, and 0≤c≤1 Li1+xM′xM″2−x(PO4)3 [Formula 2]In which, M′ is Al, Y, Cr, or Ca, M″ is Ge, Ti, Sn, Hf, Zn, or Zr, and 0≤x≤0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.