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HomeSolid State PhenomenaSolid State Phenomena Vol. 331Electrochemical Hydrogenation Properties of New...

Electrochemical Hydrogenation Properties of New YNi₃ and YNi₄ Based Alloys

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Abstract:

Seven multiphase YNi₃ and YN₄ based alloys have been prepared by arc-melting. Based on X-ray phase and structural analysis synthesized alloys depending on its composition contain intermetallics with PuNi₃, Gd₂Co₇ and CaCu₅ structure types. The influence of Y/La and Ni/Co/Mn/Al substitution on the discharge characteristics of the AB₃ and AB₄ electrodes was studied. Substitution Y by La and further Ni by Mn and Al lead to increasing discharge capacity from 40 to 341 mAh/g. Positive effect of Ni/Co/Al or Ni/Mn/Al substitution was also observed for the AB₃ electrodes. The high discharge capacities of 318 mAh/g and 340 mAh/g were seen for the YNi_2.65Co_0.2Al_0.15 and YNi_2.65Mn_0.2Al_0.15 electrodes.

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Periodical:

Solid State Phenomena (Volume 331)

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25-30

DOI:

https://doi.org/10.4028/p-c9wr6y

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Online since:

April 2022

Authors:

Yuriy Verbovytskyy*, Volodymyr Oprysk, Pavlo Lyutyy, Ihor Zavaliy

Keywords:

Alloys, Electrochemical Properties, Ni/MH Batteries, Yttrium Compounds

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© 2022 Trans Tech Publications Ltd. All Rights Reserved

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