Structural, solid-gas and electrochemical characterization of Mg2Ni-rich and MgxNi100-x amorphous-rich nanomaterials obtained by mechanical alloying
Identifieur interne : 000709 ( Main/Exploration ); précédent : 000708; suivant : 000710Structural, solid-gas and electrochemical characterization of Mg2Ni-rich and MgxNi100-x amorphous-rich nanomaterials obtained by mechanical alloying
Auteurs : M. Abdellaoui [Tunisie] ; S. Mokbli [Tunisie] ; F. Cuevas [France] ; M. Latroche [France] ; A. Percheron Guegan [France] ; H. Zarrouk [Tunisie]Source :
- International journal of hydrogen energy [ 0360-3199 ] ; 2006.
Descripteurs français
- Pascal (Inist)
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- topic : Hydrogène.
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Abstract
Using a planetary ball mill and starting from a mixture of Mg and Ni with an atomic ration of 2:1, we successfully elaborated a nanocomposite material formed by the Mg2Ni phase in high proportion, some residual Ni and an amorphous phase. The synthesis of this composite proceeded at milling intensities 7 and 10, corresponding to 3.5 and 10 W/g shock power, respectively, after 18 and 4h. The best hydrogen absorption capacity reported, 3.75 H mol-1 (3.53 wt%) is for the composite synthesized for 24 h at 3.5 W/g shock power. Using the same planetary ball mill and starting from a mixture of Mg2Ni and Ni with a Mg atomic content ranging from 40 to 60at%, we elaborated amorphous phase alloys with little quantities of residual Ni. The synthesis of the amorphous phase proceeded at 6.49 W/g shock power, for milling durations ranging from 8 to 101 h for Mg40Ni60 and Mg60Ni40 samples, respectively. The best electrochemical capacity (470mAh/g) was obtained for the Mg50Ni50 sample obtained at milling duration 10 times shorter than that reported in the literature.
Affiliations:
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Abdellaoui</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INRAP, Pôle technologique de Sidi Thabet 2020</s1><s2>Sidi Thabet</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Sidi Thabet</wicri:noRegion></affiliation></author><author><name sortKey="Mokbli, S" sort="Mokbli, S" uniqKey="Mokbli S" first="S." last="Mokbli">S. Mokbli</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INRAP, Pôle technologique de Sidi Thabet 2020</s1><s2>Sidi Thabet</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Sidi Thabet</wicri:noRegion></affiliation></author><author><name sortKey="Cuevas, F" sort="Cuevas, F" uniqKey="Cuevas F" first="F." last="Cuevas">F. 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Zarrouk</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>INRAP, Pôle technologique de Sidi Thabet 2020</s1><s2>Sidi Thabet</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>Tunisie</country><wicri:noRegion>Sidi Thabet</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">International journal of hydrogen energy</title><title level="j" type="abbreviated">Int. j. hydrogen energy</title><idno type="ISSN">0360-3199</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">International journal of hydrogen energy</title><title level="j" type="abbreviated">Int. j. hydrogen energy</title><idno type="ISSN">0360-3199</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amorphous alloy</term><term>Ball mill</term><term>Electrochemical characteristic</term><term>Hydrogen</term><term>Magnesium Nickel Alloys</term><term>Mechanical alloying</term><term>Nanocomposite</term><term>Nanostructured materials</term><term>Planetary mill</term><term>Secondary cell</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Accumulateur électrochimique</term><term>Alliage mécanique</term><term>Broyeur satellite</term><term>Broyeur boulet</term><term>Magnésium Nickel Alliage</term><term>Nanocomposite</term><term>Nanomatériau</term><term>Hydrogène</term><term>Alliage amorphe</term><term>Caractéristique électrochimique</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Hydrogène</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Using a planetary ball mill and starting from a mixture of Mg and Ni with an atomic ration of 2:1, we successfully elaborated a nanocomposite material formed by the Mg<sub>2</sub>Ni phase in high proportion, some residual Ni and an amorphous phase. The synthesis of this composite proceeded at milling intensities 7 and 10, corresponding to 3.5 and 10 W/g shock power, respectively, after 18 and 4h. The best hydrogen absorption capacity reported, 3.75 H mol<sup>-1</sup> (3.53 wt%) is for the composite synthesized for 24 h at 3.5 W/g shock power. Using the same planetary ball mill and starting from a mixture of Mg<sub>2</sub>Ni and Ni with a Mg atomic content ranging from 40 to 60at%, we elaborated amorphous phase alloys with little quantities of residual Ni. The synthesis of the amorphous phase proceeded at 6.49 W/g shock power, for milling durations ranging from 8 to 101 h for Mg<sub>40</sub>Ni<sub>60</sub> and Mg<sub>60</sub>Ni<sub>40</sub> samples, respectively. The best electrochemical capacity (470mAh/g) was obtained for the Mg<sub>50</sub>Ni<sub>50</sub> sample obtained at milling duration 10 times shorter than that reported in the literature.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country><region><li>Île-de-France</li></region><settlement><li>Thiais</li></settlement></list><tree><country name="Tunisie"><noRegion><name sortKey="Abdellaoui, M" sort="Abdellaoui, M" uniqKey="Abdellaoui M" first="M." last="Abdellaoui">M. Abdellaoui</name></noRegion><name sortKey="Mokbli, S" sort="Mokbli, S" uniqKey="Mokbli S" first="S." last="Mokbli">S. Mokbli</name><name sortKey="Zarrouk, H" sort="Zarrouk, H" uniqKey="Zarrouk H" first="H." last="Zarrouk">H. Zarrouk</name></country><country name="France"><region name="Île-de-France"><name sortKey="Cuevas, F" sort="Cuevas, F" uniqKey="Cuevas F" first="F." last="Cuevas">F. Cuevas</name></region><name sortKey="Latroche, M" sort="Latroche, M" uniqKey="Latroche M" first="M." last="Latroche">M. Latroche</name><name sortKey="Percheron Guegan, A" sort="Percheron Guegan, A" uniqKey="Percheron Guegan A" first="A." last="Percheron Guegan">A. Percheron Guegan</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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