Microporous membrane separators for lithium ion rechargeable batteries and related methods
US11728546B2 · kind B2 · utility
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Key dates
| Filing date | Nov 24, 2015 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Aug 9, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Several embodiments of a microporous battery separator for lithium rechargeable batteries and/or related methods of making and/or using such separators are disclosed. A dry process battery separator or membrane separator exhibits a thickness that is less than about 14 μm and has increased strength performance as defined by reduced splittiness. The mode of splitting failure has been investigated, and the improvement in splittiness quantified by a test method known as the Composite Splittiness Index (CSI).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.