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

fYear

1990

fDate

25-28 Jun 1990

Firstpage

22

Lastpage

25

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Sources Symposium, 1990., Proceedings of the 34th International

Conference_Location

Cherry Hill, NJ

Print_ISBN

0-87942-604-7

Type

conf

DOI

10.1109/IPSS.1990.145781

Filename

145781