Separator structure, method for producing the same, and secondary battery using the same
US12283714B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Jan 4, 2022 |
| Grant date | Apr 22, 2025 |
| Priority date | — |
| Expiry date | Feb 17, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.