Title :
Rate capabilities and specific energies of Li/MnO2 and Li/LixCoO2 AA cells
Author :
Murphy, T.C. ; James, S.D. ; Smith, P.H. ; Cason-Smith, D.M. ; Zoski, G.D. ; Fleischmann, C.W. ; Chua, D.L. ; Lin, H.P.
Author_Institution :
US Naval Surface Warfare Center, Silver Spring, MD, USA
Abstract :
Rechargeable lithium battery chemistries are being evaluated for low power underwater vehicle applications. Testing of AA size cells has been completed for Moli Energy´s lithium/manganese dioxide (MnO2 ) and Alliant Techsystems´ first embodiment of the lithium/lithium cobalt oxide (Li/LixCoO2) system in the AA size. Cells were cycled at various discharge rates, temperatures, and depths of discharge. At 25°C and 5 mA/cm2, delivered energy densities were about 30 Wh/lb for Li/MnO2 cycled over 0.375 F/mol. Li/LixCoO2 cells cycled under the same conditions delivered an equivalent energy density. When Li/LixCoO2 cells were cycled to utilize 0.5 and 0.75 F/mol, energy densities of 40 Wh/lb and 60 Wh/lb, respectively, were demonstrated
Keywords :
cobalt compounds; life testing; lithium; lithium compounds; manganese compounds; secondary cells; 25 degC; AA cells; Li-LixCoO2; Li-MnO2; Moli Energy; cell cycling; delivered energy densities; depths of discharge; low power underwater vehicle applications; rate capabilities; rechargeable Li batteries; specific energies; Batteries; Cathodes; Chemistry; Lithium; Manufacturing; Surface discharges; Temperature; Testing; Underwater vehicles; Voltage;
Conference_Titel :
Power Sources Symposium, 1992., IEEE 35th International
Conference_Location :
Cherry Hill, NJ
Print_ISBN :
0-7803-0552-3
DOI :
10.1109/IPSS.1992.281990
