Lithium secondary battery
US10490851B2 · kind B2 · utility
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Key dates
| Filing date | Jun 2, 2015 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium secondary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte, and more particularly, the positive electrode includes a positive active material including lithium-metal oxide in which at least one metal has the continuous concentration gradient from the center to the surface, and the non-aqueous electrolyte includes a lithium salt, a multinitrile compound, and an organic solvent, thereby improving storage characteristics at a high voltage and lifetime characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.