Structural and ionic transport studies of LiAlyCo1+yO2 nano-structured intercalation compounds
Identifieur interne : 000A54 ( Main/Exploration ); précédent : 000A53; suivant : 000A55Structural and ionic transport studies of LiAlyCo1+yO2 nano-structured intercalation compounds
Auteurs : N. Amdouni [France, Tunisie] ; H. Zarrouk [Tunisie] ; F. Soulette [France] ; C. Julien [France]Source :
- Proceedings - Electrochemical society [ 0161-6374 ] ; 2003.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We present the electrochemical features behavior of LiAlyCo1-yO2 (0.0≤y≤0.3) electrodes prepared by "chimie douce" using the citrate route. The phase evolution was studied as a function of the aluminum substitution and the modification on the intercalation and deintercalation of Li ions. The overall electrochemical capacity of the LiAlyCo1-yO2 oxides have been reduced due to the sp metal substitution, however, a more stable charge-discharge cycling performances have been observed when electrodes are charged up to 4.3 V as compared to the performance of the native oxide. For such a cut-off voltage, the charge capacity of the Li//LiAl0.2Co0.8O2 cell is ca. 118 mAh/g. Kinetics characterized by the GITT method show enhancement of the chemical diffusion coefficients upon Al substitution in the LiAlyCo1-yO2 matrix.
Affiliations:
- France, Tunisie
- Gouvernorat de Tunis, Île-de-France
- Paris, Tunis
- Université Pierre-et-Marie-Curie, Université de Tunis - El Manar
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Le document en format XML
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O<sub>2</sub>
nano-structured intercalation compounds</title>
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Co<sub>1+y</sub>
O<sub>2</sub>
nano-structured intercalation compounds</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminium oxide</term>
<term>Cathode</term>
<term>Cobalt oxide</term>
<term>Electric batteries</term>
<term>Electrochemical properties</term>
<term>Electrode material</term>
<term>Intercalation compound</term>
<term>Lithium ion</term>
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<term>Lithium ion</term>
<term>Composé insertion</term>
<term>Propriété électrochimique</term>
<term>Cathode</term>
<term>Matériau électrode</term>
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<front><div type="abstract" xml:lang="en">We present the electrochemical features behavior of LiAl<sub>y</sub>
Co<sub>1-y</sub>
O<sub>2</sub>
(0.0≤y≤0.3) electrodes prepared by "chimie douce" using the citrate route. The phase evolution was studied as a function of the aluminum substitution and the modification on the intercalation and deintercalation of Li ions. The overall electrochemical capacity of the LiAl<sub>y</sub>
Co<sub>1-y</sub>
O<sub>2</sub>
oxides have been reduced due to the sp metal substitution, however, a more stable charge-discharge cycling performances have been observed when electrodes are charged up to 4.3 V as compared to the performance of the native oxide. For such a cut-off voltage, the charge capacity of the Li//LiAl<sub>0.2</sub>
Co<sub>0.8</sub>
O<sub>2</sub>
cell is ca. 118 mAh/g. Kinetics characterized by the GITT method show enhancement of the chemical diffusion coefficients upon Al substitution in the LiAl<sub>y</sub>
Co<sub>1-y</sub>
O<sub>2</sub>
matrix.</div>
</front>
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<li>Île-de-France</li>
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<li>Tunis</li>
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<name sortKey="Julien, C" sort="Julien, C" uniqKey="Julien C" first="C." last="Julien">C. Julien</name>
<name sortKey="Soulette, F" sort="Soulette, F" uniqKey="Soulette F" first="F." last="Soulette">F. Soulette</name>
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<country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Amdouni, N" sort="Amdouni, N" uniqKey="Amdouni N" first="N." last="Amdouni">N. Amdouni</name>
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