Negative electrode active material particle, negative electrode, lithium ion secondary battery, and method of producing negative electrode active material particle
US10446846B2 · kind B2 · utility
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Key dates
| Filing date | Jun 8, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative electrode active material particle has a composition represented by the following formula (I): SiOxDy . . . (I). In the formula (I), x satisfies 0≤x≤1.5. D is a group 13 element or a group 15 element in a periodic table. In an outermost surface of the negative electrode active material particle, y satisfies 10−11≤y≤10−1. In a center of the negative electrode active material particle, y satisfies y≤10−12.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.