On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material
Identifieur interne : 000047 ( Maroc/Analysis ); précédent : 000046; suivant : 000048On the LiCo2/3Ni1/6Mn1/6O2 positive electrode material
Auteurs : Abdelfattah Mahmoud [Maroc] ; Ismael Saadoune [Maroc] ; José Manuel Amarilla [Espagne] ; Rachid Hakkou [Maroc]Source :
- Electrochimica acta [ 0013-4686 ] ; 2011.
Descripteurs français
- Pascal (Inist)
- Matériau électrode, Structure lamellaire, Combustion, Lithium Oxyde, Cobalt Oxyde, Nickel Oxyde, Manganèse Oxyde, Capacité spécifique, Décharge, Microscopie électronique balayage, Préparation, Accumulateur électrochimique, Caractéristique électrique, Structure surface, Morphologie, Batterie lithium ion.
English descriptors
- KwdEn :
Abstract
LiCo2/3Ni1/6Mn1/6O2 layered oxide was synthesized by the combustion method that led to a crystalline phase with good homogeneity and low particles size. The structural properties of the prepared positive electrode material were investigated by performing XRD Rietveld refinement. Practically no Li/Ni mixing was detected evidencing that the studied compound adopts almost an ideal α-NaFeO2 type structure. The Li⁄LiCo2/3Ni1/6Mn1/6O2 cell showed a discharge capacity of 199 mAh g-1 when cycled in the 2.7-4.6 V potential rangewhile the best cycling performances were recorded when the upper cut off is fixed at 4.5 V. Structural changes in LixCo2/3Ni1/6Mn1/6O2 with lithium electrochemical de-intercalation were studied using X-ray diffraction. This study clearly shows the existence of a solid solution domain in the 0.1 < x < 1.0 composition range while forx=0.1, a new phase appears explaining the decrease of the electrochemical performance when the cell is cycled at high upper cut off voltage.
Affiliations:
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Pascal:11-0472095Le document en format XML
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A. Khattabi</s1><s2>Marrakech</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Marrakech</settlement><region nuts="2">Marrakech-Tensift-Al Haouz</region></placeName></affiliation></author><author><name sortKey="Saadoune, Ismael" sort="Saadoune, Ismael" uniqKey="Saadoune I" first="Ismael" last="Saadoune">Ismael Saadoune</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>ECME, FST Marrakech, University Cadi Ayyad, BP549, Av. A. Khattabi</s1><s2>Marrakech</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Marrakech</settlement><region nuts="2">Marrakech-Tensift-Al Haouz</region></placeName></affiliation></author><author><name sortKey="Manuel Amarilla, Jose" sort="Manuel Amarilla, Jose" uniqKey="Manuel Amarilla J" first="José" last="Manuel Amarilla">José Manuel Amarilla</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Instituto de Ciencias de Materiales de Madrid, CSIC, c/Sor Juana Ines de la Cruz, 3, Cantoblanco</s1><s2>28049 Madrid</s2><s3>ESP</s3><sZ>3 aut.</sZ></inist:fA14><country>Espagne</country><placeName><region nuts="2" type="communauté">Communauté de Madrid</region></placeName></affiliation></author><author><name sortKey="Hakkou, Rachid" sort="Hakkou, Rachid" uniqKey="Hakkou R" first="Rachid" last="Hakkou">Rachid Hakkou</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>ECME, FST Marrakech, University Cadi Ayyad, BP549, Av. 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Khattabi</s1><s2>Marrakech</s2><s3>MAR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Maroc</country><placeName><settlement type="city">Marrakech</settlement><region nuts="2">Marrakech-Tensift-Al Haouz</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Electrochimica acta</title><title level="j" type="abbreviated">Electrochim. acta</title><idno type="ISSN">0013-4686</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Electrochimica acta</title><title level="j" type="abbreviated">Electrochim. acta</title><idno type="ISSN">0013-4686</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cobalt Oxides</term><term>Combustion</term><term>Discharge</term><term>Electrical characteristic</term><term>Electrode material</term><term>Lamellar structure</term><term>Lithion ion batteries</term><term>Lithium Oxides</term><term>Manganese Oxides</term><term>Morphology</term><term>Nickel Oxides</term><term>Preparation</term><term>Scanning electron microscopy</term><term>Secondary cell</term><term>Specific capacity</term><term>Surface structure</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Matériau électrode</term><term>Structure lamellaire</term><term>Combustion</term><term>Lithium Oxyde</term><term>Cobalt Oxyde</term><term>Nickel Oxyde</term><term>Manganèse Oxyde</term><term>Capacité spécifique</term><term>Décharge</term><term>Microscopie électronique balayage</term><term>Préparation</term><term>Accumulateur électrochimique</term><term>Caractéristique électrique</term><term>Structure surface</term><term>Morphologie</term><term>Batterie lithium ion</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">LiCo<sub>2/3</sub>Ni<sub>1/6</sub>Mn<sub>1/6</sub>O<sub>2</sub> layered oxide was synthesized by the combustion method that led to a crystalline phase with good homogeneity and low particles size. The structural properties of the prepared positive electrode material were investigated by performing XRD Rietveld refinement. Practically no Li/Ni mixing was detected evidencing that the studied compound adopts almost an ideal α-NaFeO<sub>2</sub> type structure. The Li⁄LiCo<sub>2/3</sub>Ni<sub>1/6</sub>Mn<sub>1/6</sub>O<sub>2</sub> cell showed a discharge capacity of 199 mAh g<sup>-1</sup> when cycled in the 2.7-4.6 V potential rangewhile the best cycling performances were recorded when the upper cut off is fixed at 4.5 V. Structural changes in Li<sub>x</sub>Co<sub>2/3</sub>Ni<sub>1/6</sub>Mn<sub>1/6</sub>O<sub>2</sub> with lithium electrochemical de-intercalation were studied using X-ray diffraction. This study clearly shows the existence of a solid solution domain in the 0.1 < x < 1.0 composition range while forx=0.1, a new phase appears explaining the decrease of the electrochemical performance when the cell is cycled at high upper cut off voltage.</div></front></TEI><affiliations><list><country><li>Espagne</li><li>Maroc</li></country><region><li>Communauté de Madrid</li><li>Marrakech-Tensift-Al Haouz</li></region><settlement><li>Marrakech</li></settlement></list><tree><country name="Maroc"><region name="Marrakech-Tensift-Al Haouz"><name sortKey="Mahmoud, Abdelfattah" sort="Mahmoud, Abdelfattah" uniqKey="Mahmoud A" first="Abdelfattah" last="Mahmoud">Abdelfattah Mahmoud</name></region><name sortKey="Hakkou, Rachid" sort="Hakkou, Rachid" uniqKey="Hakkou R" first="Rachid" last="Hakkou">Rachid Hakkou</name><name sortKey="Saadoune, Ismael" sort="Saadoune, Ismael" uniqKey="Saadoune I" first="Ismael" last="Saadoune">Ismael Saadoune</name></country><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Manuel Amarilla, Jose" sort="Manuel Amarilla, Jose" uniqKey="Manuel Amarilla J" first="José" last="Manuel Amarilla">José Manuel Amarilla</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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