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Probing the Self-Discharge Current in LiMn_2O_4, LiCoO_2 and Li(NiMnCo)_(1/3)O_2 Cathodes

Yazami, R. and Ozawa, Y. (2006) Probing the Self-Discharge Current in LiMn_2O_4, LiCoO_2 and Li(NiMnCo)_(1/3)O_2 Cathodes. ECS Transactions, 1 (26). pp. 151-159. ISSN 1938-6737. https://resolver.caltech.edu/CaltechAUTHORS:20180913-133203768

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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.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1149/1.2209365DOIArticle
ORCID:
AuthorORCID
Yazami, R.0000-0002-0085-5012
Alternate Title:Probing the Self-Discharge Current in LiMn2O4, LiCoO2 and Li(NiMnCo)1/3O2 Cathodes
Additional Information:© 2016 ECS -- The Electrochemical Society. The authors thank ENAX, Co., Japan for kindly providing the cathodes used in this study.
Issue or Number:26
Record Number:CaltechAUTHORS:20180913-133203768
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180913-133203768
Official Citation:Rachid Yazami and Yasunori Ozawa Probing the Self-Discharge Current in LiMn2O4, LiCoO2 and Li(NiMnCo)1/3O2 Cathodes ECS Trans. 2006 1(26): 151-159; doi:10.1149/1.2209365
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:89623
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:14 Sep 2018 15:54
Last Modified:03 Oct 2019 20:17

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