Method for preparing cross-linked ceramic-coated separator containing ionic polymer, ceramic-coated separator prepared by the method, and lithium secondary battery using the same
US8372475B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 2009 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | May 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides method for preparing a cross-linked ceramic-coated separator containing an ionic polymer, a ceramic-coated separator prepared by the method, and a lithium secondary battery using the same. According to preferred methods for preparing a cross-linked ceramic-coated separator, a coating material containing ceramic particles for improving thermal and mechanical characteristics, a functional inorganic compound for improving cycle characteristics and high rate characteristics of a battery, and an ionic polymer for bonding the ceramic particles and the functional inorganic compound on a porous membrane substrate is coated on the porous membrane substrate and subjected to chemical cross-linking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.