Acid additive for rechargeable batteries employing an organic depolarizer
Abstract
Abstract AN ELECTRIC BATTERY HAVING AN AZODICARBONAMIDE COMPOUND AS THE DEPOLARIZER IN WHICH BORIC ACID IS ADDED TO THE CATHODE (DEPOLARIZER) MIX TO IMPROVE THE EFFICIENCY OF THE AZODICARBONAMIDE COMPOUNDS AS A DEPOLARIZER, TO IMPROVE THE STABILITY OF THE AZODICARBONAMIDE COMPOUNDS, AND TO IMPROVE BATTERY CYCLE LIFE. THE BORIC ACID MAY BE DRY BLENDED WITH THE CATHODE MIX AND /OR DISSOLVED (IT HAS LIMITED SOLUBILITY) IN THE ELECTROLYTE WHICH IS ADDED TO THE CATHODE MIX. THE BORIC ACID MAY BE ADDED TO THE CATHODE MIX IN AMOUNTS RANGING FROM ABOUT 1 TO ABOUT 20% BY WEIGHT OF DRY CATHODE MIX AND /OR DISSOLVED IN THE ELECTROLYTE IN AMOUNTS UP TO SATURATION (ABOUT 6% BY WEIGHT). THE BORIC ACID IS EFFECTIVE FOR BOTH SUBSTITUTED AND UNSUBSTITUTED AZODICARBONAMIDE COMPOUNDS WHEN THEY ARE USED AS BATTERY DEPOLARIZERS.
Inventors
- 👤 George F Nordblom
Bibliographic Details
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |