Porous diaphragm for electrochemical cell
US4921587A · kind A · utility
11Cited by
5References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Mar 21, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25B9/70
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A porous diaphragm is disclosed for use in an electrochemical cell having at least one electrode characterized as porous and self-draining. The diaphragm provides a way of obtaining uniformity of flow of an electrolyte through the diaphragm even when exposed to varying electrolyte head pressures. The porous diaphragm of the invention has a plurality of layers of a microporous polyolefin film or a composite comprising the microporous polyolefin film and a support fabric resistant to deterioration upon exposure to an aqueous solution of an ionizable compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.