Li-alloy/FeS2 as a sealed bipolar battery
Abstract
Continued development has brought about an electrolyte-starved cell operation with MgO powder separator and overcharge tolerance. This same technology is being used in development of a bipolar Li/FeS2 battery. This LiCl-LiBr-KBr molten-electrolyte battery is operated at 400-425 C. An overcharge tolerant cell design safeguards the Li/FeS2 cells in a bipolar battery and allows charge/equalization with simple trickle-charging. New materials and hermetic seal development have progressed to a four-cell bipolar Li/FeS2 stack test, having over 150 cycles. A prototype sealed bipolar Li/FeS2 battery has a projected performance of 191-W-h/kg specific energy with 500-W/kg peak specific power through 80 percent depth of discharge.
- Publication:
-
34th International Power Sources Symposium
- Pub Date:
- 1990
- Bibcode:
- 1990ips..symp...26K
- Keywords:
-
- Disulfides;
- Electric Batteries;
- Hermetic Seals;
- Inorganic Sulfides;
- Iron Compounds;
- Lithium Alloys;
- Molten Salt Electrolytes;
- Electric Propulsion;
- Fatigue Life;
- Performance Prediction;
- Service Life;
- Thermal Cycling Tests;
- Energy Production and Conversion