Electrochemical cell with aluminum electrodes and different electrolyte concentration in two compartments
Abstract
Abstract An improved electrochemical cell of the thermal type is described. The improved cell comprises two interconnected compartments with separate aluminum electrodes and separate solid electrolytes positioned in each compartment. The solid electrolytic material positioned within each compartment consist essentially of a mixture of aluminum chloride and sodium chloride having proportions such that the gross stoichiometric composition of the electrolyte in one compartment is less than 50 mole percent aluminum chloride while the gross stoichiometric composition of the electrolyte in the other compartment is greater than 50 mole percent aluminum chloride. The difference in the relative concentrations of aluminum chloride in the two compartments provides an unexpected improvement in the operating characteristics of the improved cell of this invention.
Inventors
- 👤 D Seegmiller
- 👤 L King
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |