Negative electrode for lithium ion secondary battery, and lithium ion secondary battery including same
US11804602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Feb 5, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a negative electrode for a lithium ion secondary battery having more improved durability than conventionally, and a lithium ion secondary battery including the same.A negative electrode for a lithium ion secondary battery including a negative electrode active material in which an organic molecule having a dielectric constant larger than that of an electrolyte solvent is chemically bonded, and a lithium ion secondary battery including the same.Preferable examples of the organic molecule include a molecule having a relative dielectric constant of 90 or more at a frequency of 10 kHz, a molecule having a molecular structure that undergoes polarization in a single molecule or between molecules, a zwitter ion compound having a positive electric charge and a negative electric charge in one molecule, hydroxy acid, and a molecule having a molecular weight of 39 to 616.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.