Separator, and separator for alkaline manganese dry battery comprising same
US11450922B2 · kind B2 · utility
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14Claims
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Assignee
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Key dates
| Filing date | Dec 25, 2018 |
| Grant date | Sep 20, 2022 |
| Priority date | — |
| Expiry date | Dec 25, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
To provide a separator which has a combination of a preferable air permeability enabling high prevention of internal short circuit and a high retention rate of such an air permeability in an electrolytic solution, and has more improved uniformity of the air permeability.A separator comprising a porous sheet and cellulose nanofibers, wherein the porous sheet comprises a binder component having the SP value of 11 to 16 (cal/cm3)1/2, and the porous sheet has the cellulose nanofibers at the inside and on the surface thereof, and wherein the cellulose nanofibers are combined with the porous sheet by fusion of the binder component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.