Ionic barrier
US4259417A · kind A · utility
6Cited by
10References
52Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1980 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Mar 10, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01M2300/0002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention features an electrochemical cell having two fluid-containing compartments separated by a nonselective microporous membrane. Select ions which would normally pass through the membrane under the influence of an ionic field, are prevented from passing through the membrane by a polyelectrolyte which has migrated through the compartment fluid to the membrane. The polyelectrolyte acts as an ionic barrier to the passage of select ions, thus effectively increasing the ion-selective capability of the membrane and, hence, the coulombic efficiency of the electrochemical cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.