Negative electrode active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including the material
US10637051B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Oct 1, 2015 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Sep 10, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a negative electrode active material for a lithium secondary battery and a method of preparing the same, wherein since the negative electrode active material includes porous polycrystalline silicon and the porous polycrystalline silicon includes pores disposed at grain boundaries, the negative electrode active material may exhibit a buffering action by internally absorbing changes in volume of the active material during charge and discharge. As a result, lifetime characteristics of a negative electrode and a battery may be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.