Published November 28, 2006
| public
Journal Article
Probing the Self-Discharge Current in LiMn_2O_4, LiCoO_2 and Li(NiMnCo)_(1/3)O_2 Cathodes
- Creators
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Yazami, R.
- Ozawa, Y.
- Other:
- Weidner, J.
Chicago
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Abstract
We combined open-circuit voltage (OCV) measurements at equilibrium at the ambient temperatures and during thermal aging of Li/LiMO half-cells (M=transition metal) in 60-75ºC temperatures range and electrochemical entropymetry to indirectly determine the self-discharge current in the cells at the corresponding aging temperature. Comparison of normalized currents show highest self-discharge rates in LiMn_2O_4 and lowest in Li(NiMnCo_(1/3)O_2, LiCoO_2 being intermediary. The results are discussed in terms of lithium re- intercalation induced phase transitions associated with electrolyte oxidation together with the phases intrinsic stability and their reactivity with the electrolyte.
Additional Information
© 2016 ECS -- The Electrochemical Society. The authors thank ENAX, Co., Japan for kindly providing the cathodes used in this study.Additional details
- Alternative title
- Probing the Self-Discharge Current in LiMn2O4, LiCoO2 and Li(NiMnCo)1/3O2 Cathodes
- Eprint ID
- 89623
- DOI
- 10.1149/1.2209365
- Resolver ID
- CaltechAUTHORS:20180913-133203768
- Created
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2018-09-14Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field