CobaltMaghrebV1, Main, Exploration, bibRecord, 000A65

Effect of partial substitution of co with Fe on the properties of LaNi3.55Mn0.4Al0.3Co0.75-xFex (x=0, 0.15, 0.55) alloys electrodes

Identifieur interne : 000A65 ( Main/Exploration ); précédent : 000A64; suivant : 000A66

Effect of partial substitution of co with Fe on the properties of LaNi3.55Mn0.4Al0.3Co0.75-xFex (x=0, 0.15, 0.55) alloys electrodes

Auteurs : C. Khaldi [Tunisie] ; H. Mathlouthi [Tunisie] ; Jilani Lamloumi [Tunisie] ; A. Percheron-Guegan [France]

Source :

Journal of alloys and compounds [ 0925-8388 ] ; 2003.

RBID : Pascal:03-0527740

Descripteurs français

Pascal (Inist)
- Voltammétrie cyclique, Corrosion, Processus réversible, Oxydoréduction, Etude expérimentale, Diffusivité, Coefficient diffusion, Fer alliage, Matériau électrode, Cobalt alliage, Aluminium alliage, Manganèse alliage, Lanthane alliage, Nickel alliage, Alliage LaNiMnAlCoFe, Al Co Fe La Mn Ni, 8245F, 8245A.
Wicri :
- topic : Corrosion.

English descriptors

KwdEn :
- Aluminium alloy, Cobalt alloy, Corrosion, Cyclic voltammetry, Diffusion coefficient, Diffusivity, Electrode material, Experimental study, Iron alloy, Lanthanum alloy, Manganèse alloy, Nickel alloy, Oxidation reduction, Reversible processes.

Abstract

The effect of iron substitution on the electrochemical behaviour of LaNi_3.55Mn_0.4Al_0.3Co_0.75-xFe_x compounds (x=0, 0.15, 0.55) has been studied by chronopotentiometry and cyclic voltammetry techniques. The maximum capacity decreases linearly from 308 to 239 mAhg^-1 when the iron content increases from 0 to 7.3 wt.% (x=0.55). This decrease can be explained by the corrosion of the alloy in the aqueous KOH electrolyte. In spite of this decrease and of the long time needed for the activation, a good stability of discharge capacity was observed in LaNi_3.35Mn_0.4Al_0.3Co_0.75-xFe_x compounds. The reversibility of the electrochemical redox reaction of LaNi_3.55Mn_0.4Al_0.3Co_0.75-xFe_x alloy electrodes has been observed in the alloys least rich in iron. The hydrogen diffusivity in LaNi_3.55Mn_0.4Al_0.3Co_0.75-xFe_x alloy electrodes decreases when increasing the iron content. The obtained values of the hydrogen diffusion coefficient D_H, varies between 2.1×10^-7 and 8.2×10^-9 cm²s^-1 depending on the iron content of the electrode.

Affiliations:

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Le document en format XML

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Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 (x=0, 0.15, 0.55) alloys electrodes</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Effect of partial substitution of co with Fe on the properties of LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 (x=0, 0.15, 0.55) alloys electrodes</title>
<author><name sortKey="Khaldi, C" sort="Khaldi, C" uniqKey="Khaldi C" first="C." last="Khaldi">C. Khaldi</name>
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<author><name sortKey="Mathlouthi, H" sort="Mathlouthi, H" uniqKey="Mathlouthi H" first="H." last="Mathlouthi">H. Mathlouthi</name>
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<placeName><settlement type="city">Tunis</settlement>
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<author><name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name>
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<s2>1008 Tunis</s2>
<s3>TUN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
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<placeName><settlement type="city">Tunis</settlement>
<region type="region" nuts="2">Gouvernorat de Tunis</region>
</placeName>
<orgName type="university" n="3">Université de Tunis</orgName>
</affiliation>
</author>
<author><name sortKey="Percheron Guegan, A" sort="Percheron Guegan, A" uniqKey="Percheron Guegan A" first="A." last="Percheron-Guegan">A. Percheron-Guegan</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>L.C.M.T.R. G.L.T, CNRS, 2-8 Rue Henri Dunant</s1>
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<s3>FRA</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
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<series><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
<idno type="ISSN">0925-8388</idno>
<imprint><date when="2003">2003</date>
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<seriesStmt><title level="j" type="main">Journal of alloys and compounds</title>
<title level="j" type="abbreviated">J. alloys compd.</title>
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</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aluminium alloy</term>
<term>Cobalt alloy</term>
<term>Corrosion</term>
<term>Cyclic voltammetry</term>
<term>Diffusion coefficient</term>
<term>Diffusivity</term>
<term>Electrode material</term>
<term>Experimental study</term>
<term>Iron alloy</term>
<term>Lanthanum alloy</term>
<term>Manganèse alloy</term>
<term>Nickel alloy</term>
<term>Oxidation reduction</term>
<term>Reversible processes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Voltammétrie cyclique</term>
<term>Corrosion</term>
<term>Processus réversible</term>
<term>Oxydoréduction</term>
<term>Etude expérimentale</term>
<term>Diffusivité</term>
<term>Coefficient diffusion</term>
<term>Fer alliage</term>
<term>Matériau électrode</term>
<term>Cobalt alliage</term>
<term>Aluminium alliage</term>
<term>Manganèse alliage</term>
<term>Lanthane alliage</term>
<term>Nickel alliage</term>
<term>Alliage LaNiMnAlCoFe</term>
<term>Al Co Fe La Mn Ni</term>
<term>8245F</term>
<term>8245A</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Corrosion</term>
</keywords>
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<front><div type="abstract" xml:lang="en">The effect of iron substitution on the electrochemical behaviour of LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 compounds (x=0, 0.15, 0.55) has been studied by chronopotentiometry and cyclic voltammetry techniques. The maximum capacity decreases linearly from 308 to 239 mAhg<sup>-1</sup>
 when the iron content increases from 0 to 7.3 wt.% (x=0.55). This decrease can be explained by the corrosion of the alloy in the aqueous KOH electrolyte. In spite of this decrease and of the long time needed for the activation, a good stability of discharge capacity was observed in LaNi<sub>3.35</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 compounds. The reversibility of the electrochemical redox reaction of LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 alloy electrodes has been observed in the alloys least rich in iron. The hydrogen diffusivity in LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Co<sub>0.75-x</sub>
Fe<sub>x</sub>
 alloy electrodes decreases when increasing the iron content. The obtained values of the hydrogen diffusion coefficient D<sub>H</sub>
, varies between 2.1×10<sup>-7</sup>
 and 8.2×10<sup>-9</sup>
 cm<sup>2</sup>
s<sup>-1</sup>
 depending on the iron content of the electrode.</div>
</front>
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<name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name>
<name sortKey="Mathlouthi, H" sort="Mathlouthi, H" uniqKey="Mathlouthi H" first="H." last="Mathlouthi">H. Mathlouthi</name>
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<country name="France"><noRegion><name sortKey="Percheron Guegan, A" sort="Percheron Guegan, A" uniqKey="Percheron Guegan A" first="A." last="Percheron-Guegan">A. Percheron-Guegan</name>
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Effect of partial substitution of co with Fe on the properties of LaNi3.55Mn0.4Al0.3Co0.75-xFex (x=0, 0.15, 0.55) alloys electrodes

Effect of partial substitution of co with Fe on the properties of LaNi3.55Mn0.4Al0.3Co0.75-xFex (x=0, 0.15, 0.55) alloys electrodes

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri