Li/LiCoO/sub 2/ in inorganic electrolyte solution

The results of half cell experiments with Li/LiCoO/sub 2/ in inorganic electrolyte solution indicate the stability, compatibility, and high rate capability of this system. The electrolyte solution has an acceptable conductivity of about 65 mS/cm at 25 degrees C and can be used in the range from -25...

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Bibliographic Details
Published inIEEE 35th International Power Sources Symposium pp. 260 - 263
Main Authors Hambitzer, G., Dreher, J., Dunger, J., Schriever, U.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1992
Subjects
Batteries
Biomembranes
Chemicals
Counting circuits
Current density
Electrodes
Lithium
Mass spectroscopy
Solvents
Stability
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Summary:The results of half cell experiments with Li/LiCoO/sub 2/ in inorganic electrolyte solution indicate the stability, compatibility, and high rate capability of this system. The electrolyte solution has an acceptable conductivity of about 65 mS/cm at 25 degrees C and can be used in the range from -25 up to 70 degrees C. Potentiodynamic cycling of the LiCoO/sub 2/ electrode between 3.5 and 4.5 V versus Li show power loss with capacity decrease of 0.3% per cycle. Charging up to 5 V results in no degradation of the CoO/sub 2/ electrode. In an overcharge reaction Cl/sub 2/ was evolved reacting with components to compatible products. The formation of Cl/sub 2/ at the Ni electrode was shown by applying online electrochemical mass spectrometry. Lithium cycle efficiencies of about 99% at 40 mA/cm/sup 2/ were achieved.< >
ISBN:9780780305526
0780305523
DOI:10.1109/IPSS.1992.282031