Thermoplastic separator for alkaline electrochemical cells and processes for the production thereof
US7563544B2 · kind B2 · utility
0Cited by
8References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 2004 |
| Grant date | Jul 21, 2009 |
| Priority date | — |
| Expiry date | Dec 11, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49108
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An alkaline electrochemical cell containing a neat multiphase thermoplastic polymer separator is disclosed. The microstructure and composition of the polymer are selected to provide a film that can physically endure the rigors of a cell assembly process and also provide adequate ionic conductivity to support a high rate discharge. In one embodiment, the ionic conductivity of the separator is improved upon contact with the cell's alkaline electrolyte. Processes that can be used to manufacture a cell of this invention are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.