Development of a sealed bipolar Li-alloy/FeS2 battery for electric vehicles
Abstract
Rapid progress is being made in the development of a bipolar Li-alloy/FeS2 battery with molten LiCl-LiBr-KBr electrolyte and MgO powder separator. Such a battery would be operated at 400 to 425 C and is expected to attain high performance and long cycle life (greater than 1000 cycles). An overcharge tolerant cell design safeguards the Li-alloys/FeS2 cells in the bipolar battery ad allows charge equalization with simple trickle charging. New ceramic materials have been developed for use as the peripheral hermetic seals required for electrolyte containment in bipolar cells. A stack of four bipolar Li-alloy/FeS2 cells with these seals has been operated for over 150 cycles. Projected performance for a prototype sealed bipolar Li-alloy/FeS2 battery is 191 Wh/kg specific energy and 500 W/kg peak specific power through 80 percent depth of discharge. Outstanding electric-vehicle performance can be expected from such a battery.
- Publication:
-
Presented at the 25th Intersociety Energy Conversion Engineering Conference
- Pub Date:
- April 1990
- Bibcode:
- 1990iece.confQ..12K
- Keywords:
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- Acceleration (Physics);
- Bipolarity;
- Electric Discharges;
- Electric Motor Vehicles;
- Fabrication;
- Lithium Alloys;
- Lithium Sulfur Batteries;
- Magnesium Oxides;
- Powder (Particles);
- Current Density;
- Electrodes;
- Electrolytes;
- High Temperature;
- Electronics and Electrical Engineering