Decomposition of the LaNi3.55Mn0.4Al0.3Fe0.75 compound upon electrochemical cycling studied by magnetic properties
Identifieur interne : 000992 ( Main/Merge ); précédent : 000991; suivant : 000993Decomposition of the LaNi3.55Mn0.4Al0.3Fe0.75 compound upon electrochemical cycling studied by magnetic properties
Auteurs : M. Ayari [Tunisie] ; V. Paul-Boncour [France] ; Jilani Lamloumi [Tunisie] ; A. Percheron-Guegan [France]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Cycle charge décharge, Durée vie, Corrosion, Précipitation, Superparamagnétisme, Stockage hydrogène, Etude expérimentale, Aimantation, Fer alliage, Lanthane alliage, Nickel alliage, Composé intermétallique, Matériau électrode, Manganèse alliage, Composé n éléments, Alliage LaNiMnAlFe, Al Fe La Mn Ni, 8460V, 8245F.
- Wicri :
- topic : Corrosion.
English descriptors
- KwdEn :
Abstract
The effect of iron substitution for cobalt in LaNi3.55Mn0.4Al0.3Co0.75-xFex (x=0, 0.35, 0.75) on the evolution of the storage capacity during charge/discharge cycles has been investigated. The partial replacement of Co by Fe improves the cycle lifetime of the alloy. However, the total substitution of Fe for Co leads to a very great loss of capacity and therefore considerable alloy decomposition may occur during cycling, due to the corrosion process. The magnetic properties of LaNi3.55Mn0.4Al0.3Fe0.75 and their evolution during the electrochemical cycle have been studied in order to characterize quantitatively the alloy decomposition. This study shows that the amount of decomposed alloy increases with the number of cycles and leads to the precipitation of superparamagnetic Ni-Fe bimetallic particles (d = 1-10 nm). A correlation is established between the loss of electrochemical capacity, the amounts of decomposed alloy and segregated Ni-Fe particles.
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Pascal:03-0427108Le document en format XML
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Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Fe<sub>0.75</sub>
compound upon electrochemical cycling studied by magnetic properties</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Decomposition of the LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Fe<sub>0.75</sub>
compound upon electrochemical cycling studied by magnetic properties</title>
<author><name sortKey="Ayari, M" sort="Ayari, M" uniqKey="Ayari M" first="M." last="Ayari">M. Ayari</name>
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<country>Tunisie</country>
<placeName><settlement type="city">Tunis</settlement>
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<author><name sortKey="Paul Boncour, V" sort="Paul Boncour, V" uniqKey="Paul Boncour V" first="V." last="Paul-Boncour">V. Paul-Boncour</name>
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<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Île-de-France</region>
<settlement type="city">Thiais</settlement>
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</affiliation>
</author>
<author><name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Mécanique, Matériaux et Procédés, ESSTT, 5 Avenue Taha Hussein</s1>
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<orgName type="university" n="3">Université de Tunis</orgName>
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<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="3"><inist:fA14 i1="02"><s1>Laboratoire de Chimie Métallurgique des Terres Rares, GLVT, CNRS, 2-8 Rue Henri Dunant</s1>
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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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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Corrosion</term>
<term>Discharge charge cycle</term>
<term>Electrode material</term>
<term>Experimental study</term>
<term>Hydrogen storage</term>
<term>Intermetallic compound</term>
<term>Iron alloy</term>
<term>Lanthanum alloy</term>
<term>Lifetime</term>
<term>Magnetization</term>
<term>Manganèse alloy</term>
<term>Multi-element compound</term>
<term>Nickel alloy</term>
<term>Precipitation</term>
<term>Superparamagnetism</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Cycle charge décharge</term>
<term>Durée vie</term>
<term>Corrosion</term>
<term>Précipitation</term>
<term>Superparamagnétisme</term>
<term>Stockage hydrogène</term>
<term>Etude expérimentale</term>
<term>Aimantation</term>
<term>Fer alliage</term>
<term>Lanthane alliage</term>
<term>Nickel alliage</term>
<term>Composé intermétallique</term>
<term>Matériau électrode</term>
<term>Manganèse alliage</term>
<term>Composé n éléments</term>
<term>Alliage LaNiMnAlFe</term>
<term>Al Fe La Mn Ni</term>
<term>8460V</term>
<term>8245F</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 for cobalt 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>
(x=0, 0.35, 0.75) on the evolution of the storage capacity during charge/discharge cycles has been investigated. The partial replacement of Co by Fe improves the cycle lifetime of the alloy. However, the total substitution of Fe for Co leads to a very great loss of capacity and therefore considerable alloy decomposition may occur during cycling, due to the corrosion process. The magnetic properties of LaNi<sub>3.55</sub>
Mn<sub>0.4</sub>
Al<sub>0.3</sub>
Fe<sub>0.75</sub>
and their evolution during the electrochemical cycle have been studied in order to characterize quantitatively the alloy decomposition. This study shows that the amount of decomposed alloy increases with the number of cycles and leads to the precipitation of superparamagnetic Ni-Fe bimetallic particles (d = 1-10 nm). A correlation is established between the loss of electrochemical capacity, the amounts of decomposed alloy and segregated Ni-Fe particles.</div>
</front>
</TEI>
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<li>Tunisie</li>
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<region><li>Gouvernorat de Tunis</li>
<li>Île-de-France</li>
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<settlement><li>Thiais</li>
<li>Tunis</li>
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<orgName><li>Université de Tunis</li>
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<tree><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Ayari, M" sort="Ayari, M" uniqKey="Ayari M" first="M." last="Ayari">M. Ayari</name>
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<name sortKey="Lamloumi, J" sort="Lamloumi, J" uniqKey="Lamloumi J" first="J." last="Lamloumi">Jilani Lamloumi</name>
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<country name="France"><region name="Île-de-France"><name sortKey="Paul Boncour, V" sort="Paul Boncour, V" uniqKey="Paul Boncour V" first="V." last="Paul-Boncour">V. Paul-Boncour</name>
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<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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</record>
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