Silver oxide/zinc rechargeable lithium cells: A comparison with high energy density lithium/lithium cobalt oxide. Final report, 24 September 1989-1 March 1992

Technical Report · Wed Nov 01 04:00:00 EST 1995

OSTI ID:370988

Lin, H P.W.; Kelly, C J; Chua, D L; Fleischmann, C W; Smith, P H

Commercial, 30-ampere-hour Silver Oxide/Zinc (AgO/Zn) cells were evaluated for cycle life and charge retention. Results were compared to recently developed 30-ampere-hour Lithium/Lithium Cobalt Oxide (Li/Li(x)CoO2) cells. Prior to cycling at -2 deg C, +23 deg C, and +35 deg C, some cells were stored up to three months under four storage conditions: +23 deg C charged, +23 deg C discharged, +35 deg C charged, and +35 deg C discharged. Cells were discharged at the six hour rate. Cycling continued until discharge capacity fell to 25 Ampere-hour (Ah) at room temperature, cells delivered about 40 watt-hours per pound (Wh/lb). Performance improved at +35 deg C but severely degraded at -2 deg C. The lithium cells provided almost 60-Wh/lb. Silver Oxide/Zinc cells stored charged at +23 deg C for three months lost one-third of their initial capacity; those stored at +35 deg C lost half of their initial capacity. Even slow charging could not restore the loss. Discharged cells stored better, but capacity fell off more rapidly.

• Research Organization: Alliant Techsystems, Inc., Horsham, PA (United States). Power Sources Center
• OSTI ID: 370988
• Report Number(s): AD-A--308902/6/XAB; CNN: Contract N60921-89-D-0039
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
COBALT OXIDES
COMPARATIVE EVALUATIONS
ELECTROCHEMISTRY
LITHIUM
PROGRESS REPORT
SILVER-ZINC BATTERIES