Development of Large Li-Ion Batteries for Aircraft and Spacecraft Applications
Final rept. 1 Jul 96-1 Dec 97
BLUE STAR ADVANCED TECHNOLOGY CORP NORTH VANCOUVER (CANADA)
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This program was initially focussed on the development of very large rechargeable LiSO2 cells for use as a survival pow source in missile silos. With the diminishment in the strategic value of these missile systems came a redirection of the program towards smaller cell silos. Concurrent was a chemical direction which changed the emphasis of the program from the rechargeable LiSO2 chemistry to that of the family of cell chemistries which are collectively referred to as lithium ion. These cells are based on a metal oxide cathode, a carbon-lithium intercalation anode and an electrolyte solution consisting of a mixture of organic solvents and a soluble Li salt. These systems moved to the forefront of advanced battery technology in the early 1990s because they clearly offered significant improvements in cycle life, cell safely and energy densityspecific energy. More recently, it became clear that spacecraft batteries based on large 20 to 100-Ah Li ion cells would offer a significant reduction in spacecraft power system mass and the USAF Phillips laboratory joined Wright laboratory and Canadas DND in the sponsorship of this program.
- Electrochemical Energy Storage