Lead-acid separators and cells and batteries using such separators
US6406813B2 · kind B2 · utility
11Cited by
6References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 2, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Apr 2, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sealed lead-acid cell utilizes a separator made with modified plastic microfibers having a contact angle of no more than 1.5° to the sulfuric acid electrolyte used and having a diameter of 1.1 to 5.0&mgr;, the separator having a porosity of 87 to 94%, a surface area of 1.0 to 2.2 meters2/gm., and a maximum pore diameter of 8 to 20&mgr; and a mean pore diameter of 1.2 to 5.0&mgr;.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.