Serveur d'exploration sur le nickel au Maghreb

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Structural and electrochemical properties of amorphous rich MgxNi100-x nanomaterial obtained by mechanical alloying

Identifieur interne : 000283 ( France/Analysis ); précédent : 000282; suivant : 000284

Structural and electrochemical properties of amorphous rich MgxNi100-x nanomaterial obtained by mechanical alloying

Auteurs : M. Abdellaoui [Tunisie] ; S. Mokbli [Tunisie] ; F. Cuevas [France] ; M. Latroche [France] ; A. Percheron-Guegan [France] ; H. Zarrouk [Tunisie]

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RBID : Pascal:03-0428843

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Abstract

Using a planetary ball mill and starting from a mixture of Mg2Ni and Ni with a Mg atomic content ranging from 40 to 60 at.%, we have elaborated amorphous phase alloys with little quantities of residual Ni. The synthesis of the amorphous phase proceeded at 6.49 W g-1 shock power, for milling durations ranging from 8 to 10 h for Mg40Ni60 and Mg60Ni40 samples, respectively. The best electrochemical capacity (470 mAh g-1, equivalent of MgNiH2.0) was obtained for the Mg50Ni50 sample synthesized in milling duration 10 times shorter than that commonly reported in the literature.


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Pascal:03-0428843

Le document en format XML

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<div type="abstract" xml:lang="en">Using a 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 60 at.%, we have elaborated amorphous phase alloys with little quantities of residual Ni. The synthesis of the amorphous phase proceeded at 6.49 W g
<sup>-1</sup>
shock power, for milling durations ranging from 8 to 10 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 (470 mAh g
<sup>-1</sup>
, equivalent of MgNiH
<sub>2.0</sub>
) was obtained for the Mg
<sub>50</sub>
Ni
<sub>50</sub>
sample synthesized in milling duration 10 times shorter than that commonly reported in the literature.</div>
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