Composite negative active material, negative electrode and lithium secondary battery including the composite negative active material, and method of preparing the composite negative active material
US10050264B2 · kind B2 · utility
0Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2016 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Jan 18, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite negative active material, and a negative electrode and a lithium secondary battery that include the composite negative active material, and a method of preparing the composite negative active material are disclosed. The composite negative active material includes: a core including a silicon material and a coating layer disposed on the core, wherein the coating layer includes a water-insoluble polymer composite in which at least one anionic component is chemically bonded to a water-soluble polymer, thereby improving lifespan characteristics of the composite negative active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.