Cathode active material layer for lithium secondary battery and method of manufacturing
US10411264B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a cathode active material layer for a lithium battery. The cathode active material layer comprises multiple particulates of a cathode active material, wherein a particulate is composed of one or a plurality of cathode active material particles being fully embraced or encapsulated by a thin layer of a high-elasticity polymer having a recoverable tensile strain from 2% to 700% (preferably from 5% to 500%) when measured without an additive or reinforcement, a lithium ion conductivity no less than 10−5 S/cm (preferably and typically from 1.0×10−5 S/cm to 5×10−2 S/cm) at room temperature, and a thickness from 0.5 nm (essentially a molecular monolayer) to 10 μm (preferably from 1 nm to 100 nm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.