Lithium ion secondary battery and method of manufacturing the same
US10749167B2 · kind B2 · utility
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Key dates
| Filing date | Jun 18, 2018 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Dec 7, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium ion secondary battery includes at least a positive electrode, a negative electrode, and an electrolyte. The positive electrode contains at least a first positive electrode active material and a second positive electrode active material. The first positive electrode active material is expressed with a formula (I) LiNiaCobMncO2 and the second positive electrode active material is expressed with a formula (II) LiNidCoeMnfO2, where a, b, c, d, e, and f satisfy conditions of a>d, 0.4≤a≤0.6, 0.2≤b≤0.5, 0.1≤c≤0.2, a+b+c=1.0, 0.2≤d≤0.5, 0.1≤e≤0.2, 0.4≤f≤0.6, and d+e+f=1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.