Separators for secondary alkaline batteries having a zinc-containing electrode
Abstract
Abstract A SEALED OR RESEALABLY SAFETY-VALUED ALKALINE ZINC ELECTRODE-CONTAINING BATTERY CELL IS DISCLOSED EMPLOYING A MULTI-LAYER SEPARATOR MATERIAL WHICH IS COMPOSED OF: (1) A FIRST LAYER IS CLOSE ENGAGEMENT WITH THE ZINC ELECTRODE, MICROSCOPICALLY HOMOGENOUS, NON-RETICULATED, HIGHLY ABSORBING AND RETENTIVE OF ELECTROLYTE, AND PROVIDING A UNIFORMLY WETTED INTERFACE WITH THE ZINC ELECTRODE SUBSTANTIALLY LACKING OCCULDED VOIDS; (2) A SECOND LAYER, CONTIGUOUS TO THE OPPOSITE POLARITY ELECTRODE, WHICH IS COMPOSED OF THE SAME MATERIAL AS THE FIRST LAYER, OR OF A MORE POROUS, RETICULATED AND LESS-RETENTIVE MATERIAL THAN THE FIRST LAYER; AND OPTIONALLY, (3) A THIRD LAYER, INTEPOSED BETWEEN TH FIRST AND SECOND LAYERS, OF AS SEMI-PERMEABLE MEMBRANOUS LAYER, THE NET EFFECT OF THIS MULTI-LAYER SEPARATOR IS TO PROVIDE A VARIANCE IN SEPARATOR MATERIAL CHARACTERISTICS NORMALLY TO AND TRANSVERSELY BETWEEN THE ELECTRODES.
Inventors
- 👤 John L Devitt
- 👤 Donald H Mcclelland
Bibliographic Details
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| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |