Serveur d'exploration sur le cobalt au Maghreb

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Local structure and electrochemistry of LiNiyMnyCo1−2yO2 electrode materials for Li-ion batteries

Identifieur interne : 000723 ( Main/Exploration ); précédent : 000722; suivant : 000724

Local structure and electrochemistry of LiNiyMnyCo1−2yO2 electrode materials for Li-ion batteries

Auteurs : K. Ben Kamel [Tunisie] ; N. Amdouni [Tunisie] ; A. Abdel-Ghany [France] ; K. Zaghib [Canada] ; A. Mauger [France] ; F. Gendron [France] ; C. M. Julien [France]

Source :

RBID : Hal:hal-00344702

English descriptors

Abstract

A series of LiNixMnyCozO2 (x=y, z=1−2y) oxides have been synthesized by “chimie douce” and investigated as positive electrodes in rechargeable lithium batteries. Layered LiNiyMnyCo1−2yO2 materials with high homogeneity and crystallinity were synthesized using the wet-chemical method assisted by carboxylic acid as the polymeric agent. The long range and local structural properties are investigated with experiments including Xray diffraction, Fourier transform infrared spectroscopy, and electron paramagnetic resonance spectroscopy. The evolution of the structure is discussed as a function of the cobalt content that confers layer-like behavior on the framework. Electrochemical performance of LiNiyMnyCo1−2yO2 oxides is tested in cells using nonaqueous 1 M LiPF6 dissolved in ethylene carbonate–diethyl carbonate. Charge–discharge profiles are investigated as a function of the rate capability and the voltage window. A relation is found between the gravimetric capacity and the cation disorder of the positive electrode as indicated by structural analysis. Fast lithium extraction attributed to the larger interslab space has been observed in the cobalt-rich oxides

Url:
DOI: 10.1007/s11581-007-0167-y


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<idno type="IdRef">02636817X</idno>
<orgName>Centre National de la Recherche Scientifique</orgName>
<orgName type="acronym">CNRS</orgName>
<date type="start">1939-10-19</date>
<desc>
<address>
<country key="FR"></country>
</address>
<ref type="url">http://www.cnrs.fr/</ref>
</desc>
</org>
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</hal:affiliation>
<country>France</country>
</affiliation>
</author>
<author>
<name sortKey="Julien, C M" sort="Julien, C M" uniqKey="Julien C" first="C. M." last="Julien">C. M. Julien</name>
<affiliation wicri:level="1">
<hal:affiliation type="laboratory" xml:id="struct-101592" status="VALID">
<idno type="RNSR">199712634A</idno>
<orgName>Institut des Nanosciences de Paris</orgName>
<orgName type="acronym">INSP</orgName>
<desc>
<address>
<addrLine>Université Pierre et Marie Curie Case 840 4 place Jussieu 75252 Paris Cedex 05</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.insp.upmc.fr</ref>
</desc>
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<relation active="#struct-93591" type="direct"></relation>
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<tutelle active="#struct-93591" type="direct">
<org type="institution" xml:id="struct-93591" status="VALID">
<orgName>Université Pierre et Marie Curie - Paris 6</orgName>
<orgName type="acronym">UPMC</orgName>
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<address>
<addrLine>4 place Jussieu - 75005 Paris</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.upmc.fr/</ref>
</desc>
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<orgName>Centre National de la Recherche Scientifique</orgName>
<orgName type="acronym">CNRS</orgName>
<date type="start">1939-10-19</date>
<desc>
<address>
<country key="FR"></country>
</address>
<ref type="url">http://www.cnrs.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1007/s11581-007-0167-y</idno>
<series>
<title level="j">Ionics</title>
<idno type="ISSN">0947-7047</idno>
<imprint>
<date type="datePub">2008</date>
</imprint>
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<textClass>
<keywords scheme="mix" xml:lang="en">
<term>Intercalation compounds</term>
<term>Layered structure</term>
<term>Li-ion batteries</term>
<term>Transition-metal oxides</term>
</keywords>
</textClass>
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<front>
<div type="abstract" xml:lang="en">A series of LiNixMnyCozO2 (x=y, z=1−2y) oxides have been synthesized by “chimie douce” and investigated as positive electrodes in rechargeable lithium batteries. Layered LiNiyMnyCo1−2yO2 materials with high homogeneity and crystallinity were synthesized using the wet-chemical method assisted by carboxylic acid as the polymeric agent. The long range and local structural properties are investigated with experiments including Xray diffraction, Fourier transform infrared spectroscopy, and electron paramagnetic resonance spectroscopy. The evolution of the structure is discussed as a function of the cobalt content that confers layer-like behavior on the framework. Electrochemical performance of LiNiyMnyCo1−2yO2 oxides is tested in cells using nonaqueous 1 M LiPF6 dissolved in ethylene carbonate–diethyl carbonate. Charge–discharge profiles are investigated as a function of the rate capability and the voltage window. A relation is found between the gravimetric capacity and the cation disorder of the positive electrode as indicated by structural analysis. Fast lithium extraction attributed to the larger interslab space has been observed in the cobalt-rich oxides</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Canada</li>
<li>France</li>
<li>Tunisie</li>
</country>
</list>
<tree>
<country name="Tunisie">
<noRegion>
<name sortKey="Ben Kamel, K" sort="Ben Kamel, K" uniqKey="Ben Kamel K" first="K." last="Ben Kamel">K. Ben Kamel</name>
</noRegion>
<name sortKey="Amdouni, N" sort="Amdouni, N" uniqKey="Amdouni N" first="N." last="Amdouni">N. Amdouni</name>
</country>
<country name="France">
<noRegion>
<name sortKey="Abdel Ghany, A" sort="Abdel Ghany, A" uniqKey="Abdel Ghany A" first="A." last="Abdel-Ghany">A. Abdel-Ghany</name>
</noRegion>
<name sortKey="Gendron, F" sort="Gendron, F" uniqKey="Gendron F" first="F." last="Gendron">F. Gendron</name>
<name sortKey="Julien, C M" sort="Julien, C M" uniqKey="Julien C" first="C. M." last="Julien">C. M. Julien</name>
<name sortKey="Mauger, A" sort="Mauger, A" uniqKey="Mauger A" first="A." last="Mauger">A. Mauger</name>
</country>
<country name="Canada">
<noRegion>
<name sortKey="Zaghib, K" sort="Zaghib, K" uniqKey="Zaghib K" first="K." last="Zaghib">K. Zaghib</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

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