On the Na x Ni0.6Co0.4O2System: Physical and Electrochemical Studies
Identifieur interne : 001060 ( Main/Exploration ); précédent : 001059; suivant : 001061On the Na x Ni0.6Co0.4O2System: Physical and Electrochemical Studies
Auteurs : I. Saadoune [Maroc] ; A. Maazaz [Maroc] ; M. Ménétrier [France] ; C. Delmas [France]Source :
- Journal of Solid State Chemistry [ 0022-4596 ] ; 1996.
Descripteurs français
- Pascal (Inist)
- Accumulateur électrochimique, Cinétique, Co Na Ni O, Cobalt Oxyde, Coefficient diffusion, Composé insertion, Composé quaternaire, Désinsertion, Iode, Matériau électrode, NaxNi0,6Co0,4O2, Nickel Oxyde, Paramètre cristallin, Propriété magnétique, Réaction électrochimique, Sodium Oxyde, Solution non aqueuse, Solution électrolyte, XRD.
- Wicri :
- topic : Iode.
English descriptors
- KwdEn :
Abstract
Sodium chemical deintercalation from the NaNi0.6Co0.4O2phase was realized by using iodine as oxidizing agent. The Na0.58Ni0.6Co0.4O2phase obtained was used as the positive electrode in sodium batteries. Several structural transformations were observed during discharge (intercalation reaction). The magnetic and electrical study of the NaxNi0.6Co0.4O2(x= 1, 0.80, 0.58) phases shows clearly that NiIII(t62e1in LS configuration) is preferentially oxidized to the tetravalent state compared to CoIII(t62e0in LS configuration). The sodium diffusion coefficient was also calculated in the solid solution domains. It shows that the diffusion kinetics is faster when sodium ions are situated in a prismatic environment.
Url:
DOI: 10.1006/jssc.1996.0090
Affiliations:
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Le document en format XML
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<term>Desinsertion</term>
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<term>Electrochemical reaction</term>
<term>Electrode material</term>
<term>Electrolyte solution</term>
<term>Intercalation compound</term>
<term>Iodine</term>
<term>Kinetics</term>
<term>Lattice parameters</term>
<term>Magnetic properties</term>
<term>Nickel Oxides</term>
<term>Non aqueous solution</term>
<term>Quaternary compound</term>
<term>Secondary cell</term>
<term>Sodium Oxides</term>
<term>XRD</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Accumulateur électrochimique</term>
<term>Cinétique</term>
<term>Co Na Ni O</term>
<term>Cobalt Oxyde</term>
<term>Coefficient diffusion</term>
<term>Composé insertion</term>
<term>Composé quaternaire</term>
<term>Désinsertion</term>
<term>Iode</term>
<term>Matériau électrode</term>
<term>NaxNi0,6Co0,4O2</term>
<term>Nickel Oxyde</term>
<term>Paramètre cristallin</term>
<term>Propriété magnétique</term>
<term>Réaction électrochimique</term>
<term>Sodium Oxyde</term>
<term>Solution non aqueuse</term>
<term>Solution électrolyte</term>
<term>XRD</term>
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<front><div type="abstract" xml:lang="en">Sodium chemical deintercalation from the NaNi0.6Co0.4O2phase was realized by using iodine as oxidizing agent. The Na0.58Ni0.6Co0.4O2phase obtained was used as the positive electrode in sodium batteries. Several structural transformations were observed during discharge (intercalation reaction). The magnetic and electrical study of the NaxNi0.6Co0.4O2(x= 1, 0.80, 0.58) phases shows clearly that NiIII(t62e1in LS configuration) is preferentially oxidized to the tetravalent state compared to CoIII(t62e0in LS configuration). The sodium diffusion coefficient was also calculated in the solid solution domains. It shows that the diffusion kinetics is faster when sodium ions are situated in a prismatic environment.</div>
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