Polyolefin microporous membrane and method of producing the same, separator for non-aqueous secondary battery and non-aqueous secondary battery
US9281509B2 · kind B2 · utility
1Cited by
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20Claims
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Key dates
| Filing date | Sep 17, 2015 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Sep 17, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a separator for a non-aqueous secondary battery, the separator including: a polyolefin microporous membrane having a degree of crystallinity of from 60 to 85% and a tie molecular volume fraction of from 0.7 to 1.7%; and a heat resistant porous layer containing a heat resistant resin and provided on one side or both sides of the polyolefin microporous membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.