AB5-type hydrogen storage alloy used as anodic materials in Ni-MH batteries
Identifieur interne : 000664 ( Main/Exploration ); précédent : 000663; suivant : 000665AB5-type hydrogen storage alloy used as anodic materials in Ni-MH batteries
Auteurs : M. Tliha [Tunisie] ; H. Mathlouthi [Tunisie] ; Jilani Lamloumi [Tunisie] ; A. Percheron-Guegan [France]Source :
- Journal of alloys and compounds [ 0925-8388 ] ; 2007.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The performance of a nickel-metal hydride (Ni-MH) battery depends enormously on the characteristics of the negative electrode. The metal hydride LaNi3.55Mn0.4Al0.3Co0.4Fe0.35 alloy powder can be used as the negative electrode material. The characteristics of the LaNi3.55Mn0.4Al0.3Co0.4Fe0.35, including the polarization resistance, the exchange current density and the equilibrium potential were studied as functions of the number of cycles. The exchange current density of the alloy electrode increases with the increasing number of charge/discharge cycles and then remains almost constant after activation. The increase of the exchange current density is mainly attributed to the increase of the electrocatalytic activity of the LaNi3.55Mn0.4Al0.3Co0.4Fe0.35 alloy. The constant potential discharge technique was used to evaluate the diffusion coefficient of hydrogen in the compound at various states of charge (SOC). It is seen that the diffusion coefficient increases with the hydrogen content in the alloy.
Affiliations:
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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><s2>94320 Thiais</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Thiais</settlement></placeName></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">07-0227013</idno><date when="2007">2007</date><idno type="stanalyst">PASCAL 07-0227013 INIST</idno><idno type="RBID">Pascal:07-0227013</idno><idno type="wicri:Area/PascalFrancis/Corpus">000256</idno><idno type="wicri:Area/PascalFrancis/Curation">000185</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000258</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">000258</idno><idno type="wicri:Area/Main/Merge">000683</idno><idno type="wicri:Area/Main/Curation">000664</idno><idno type="wicri:Area/Main/Exploration">000664</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">AB<sub>5</sub>-type hydrogen storage alloy used as anodic materials in Ni-MH batteries</title><author><name sortKey="Tliha, M" sort="Tliha, M" uniqKey="Tliha M" first="M." last="Tliha">M. Tliha</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Mécanique, Matériaux et Procédés, ESSTT, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Mathlouthi, H" sort="Mathlouthi, H" uniqKey="Mathlouthi H" first="H." last="Mathlouthi">H. Mathlouthi</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Laboratoire de Mécanique, Matériaux et Procédés, ESSTT, 5 Avenue Taha Hussein</s1><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></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><s2>1008 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName><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="3"><inist:fA14 i1="02"><s1>Laboratoire de Chimie Métallurgique des Terres Rares, GLVT, CNRS, 2-8 Rue Henri Dunant</s1><s2>94320 Thiais</s2><s3>FRA</s3><sZ>4 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Thiais</settlement></placeName></affiliation></author></analytic><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="2007">2007</date></imprint></series></biblStruct></sourceDesc><seriesStmt><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></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Current density</term><term>Diffusion coefficient</term><term>Electrochemical properties</term><term>Electrode material</term><term>Hydrides</term><term>Hydrogen storage</term><term>Lanthanum alloy</term><term>Nickel hydrogen batteries</term><term>Polarization</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Stockage hydrogène</term><term>Propriété électrochimique</term><term>Polarisation</term><term>Coefficient diffusion</term><term>Batterie nickel hydrogène</term><term>Densité courant</term><term>Lanthane alliage</term><term>Hydrure</term><term>Matériau électrode</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The performance of a nickel-metal hydride (Ni-MH) battery depends enormously on the characteristics of the negative electrode. The metal hydride LaNi<sub>3.55</sub>Mn<sub>0.4</sub>Al<sub>0.3</sub>Co<sub>0.4</sub>Fe<sub>0.35</sub> alloy powder can be used as the negative electrode material. The characteristics of the LaNi<sub>3.55</sub>Mn<sub>0.4</sub>Al<sub>0.3</sub>Co<sub>0.4</sub>Fe<sub>0.35</sub>, including the polarization resistance, the exchange current density and the equilibrium potential were studied as functions of the number of cycles. The exchange current density of the alloy electrode increases with the increasing number of charge/discharge cycles and then remains almost constant after activation. The increase of the exchange current density is mainly attributed to the increase of the electrocatalytic activity of the LaNi<sub>3.55</sub>Mn<sub>0.4</sub>Al<sub>0.3</sub>Co<sub>0.4</sub>Fe<sub>0.35</sub> alloy. The constant potential discharge technique was used to evaluate the diffusion coefficient of hydrogen in the compound at various states of charge (SOC). It is seen that the diffusion coefficient increases with the hydrogen content in the alloy.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Gouvernorat de Tunis</li><li>Île-de-France</li></region><settlement><li>Thiais</li><li>Tunis</li></settlement><orgName><li>Université de Tunis</li></orgName></list><tree><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Tliha, M" sort="Tliha, M" uniqKey="Tliha M" first="M." last="Tliha">M. Tliha</name></region><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></country><country name="France"><region name="Île-de-France"><name sortKey="Percheron Guegan, A" sort="Percheron Guegan, A" uniqKey="Percheron Guegan A" first="A." last="Percheron-Guegan">A. 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