Separator for non-aqueous secondary battery and non-aqueous secondary battery
US12288898B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Apr 4, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and a heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin A that is a polyvinylidene fluoride type resin containing a tetrafluoroethylene unit; a polyvinylidene fluoride type resin B that is a polyvinylidene fluoride type resin other than the polyvinylidene fluoride type resin A; and a filler, in which an average primary particle diameter of the filler contained in the heat-resistant porous layer is from 0.01 μm to 1.0 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.