Performance characteristics of lithium cobalt dioxide cathodes in polymer-based lithium rechargeable cell
- Alliant Techsystems Inc., Horsham, PA (United States)
- Air Force, Kirtland AFB, NM (United States). Phillips Lab.
The present study was carried out to characterize the electrochemical performance of the polyacrylonitrile (PAN)-based lithium cobalt dioxide (Li{sub x}CoO{sub 2}) cell system in view of developing high energy density, long cycle life, rechargeable lithium-polymer electrolyte batteries. The PAN-based polymer electrolyte exhibited ionic conductivity exceeding 10{sup {minus}3} S/cm in the temperature range of {minus}20 C to 100 C, and an electrochemical stability window of 2.3 to 4.3 volts. The thin, plastic-like LiCoO{sub 2} cathode films offered acceptably low electronic and ionic resistances. The performance characterization of a Li/SPE/Li{sub x}CoO{sub 2} cell indicated discharge rate capability up to 0.5 mA/cm{sup 2} and extended cycle life. The 4.0 volt discharge voltage of Li/Li{sub x}CoO{sub 2} couple was well demonstrated in PAN-based lithium rechargeable cell at various temperatures.
- OSTI ID:
- 43058
- Report Number(s):
- CONF-931024--; ISBN 1-56677-033-5
- Country of Publication:
- United States
- Language:
- English
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