Alkaline battery, composite separator therefor
US4361632A · kind A · utility
23Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1981 |
| Grant date | Nov 30, 1982 |
| Priority date | — |
| Expiry date | May 22, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A dual function, composite absorber/barrier battery separator for alkaline cells is comprised of a moderately cross-linked polyvinyl alcohol film and a flexible, fibrous and wettable absorber web, the film being semipermeable to electrolyte flow. The film is mechanically bonded to a top surface of the web in a manner so as to minimize the delays of transitions from hydrodynamic flow to diffusional flow through the separator during cell operation. The invention also includes the method of making the composite separator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.