Title :
Charge-discharge characteristics of lithium-aluminum/lithiated transition metal oxide cells at high temperatures
Author :
Plichta, Edward J. ; Behl, Wishvender K.
Author_Institution :
US Army Electron. Technol. & Devices Lab., Fort Monmouth, NJ, USA
Abstract :
The charge-discharge characteristics of Li-Al/LiCl-KCl/LiCoO2 and Li-Al/LiCl-KCl/LiFeO2 cells are reported at current densities of 2 to 10 mA/cm2 at 400°C. The cycled cells exhibited multiple voltage plateaus in the charge and discharge curves, which were interpreted to be due to the formation of other lithiated transition metal oxides and/or higher transition metal oxides in addition to LiCoO2 and LiFeO2. It was also found that it was necessary to charge both cells to potentials of about 1.75 to 1.85 V to obtain maximum deliverable capacities. The polarization curves for both cells at current densities of 1 to 100 mA/cm2 are also presented
Keywords :
cobalt compounds; electrochemistry; electrolytes; iron compounds; lithium; lithium compounds; polarisation; secondary cells; 1.75 to 1.85 V; 400 degC; LiAl-LiClKCl-LiCoO2; capacities; charge-discharge characteristics; current densities; cycling; high temperatures; lithiated transition metal oxides; polarization; secondary cells; voltage plateaus; Anodes; Boron; Cathodes; Current density; Lithium compounds; Particle separators; Pressing; Steel; Temperature; Voltage;
Conference_Titel :
Power Sources Symposium, 1990., Proceedings of the 34th International
Conference_Location :
Cherry Hill, NJ
Print_ISBN :
0-87942-604-7
DOI :
10.1109/IPSS.1990.145781
