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Effects of the Chromium Content in (TiVNb) 100−x Cr x Body-Centered Cubic High Entropy Alloys Designed for Hydrogen Storage Applications

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  • Renato Belli Strozi

    (Institut de Recherche sur l’Hydrogène, Universitè du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières, QC G9A 5H7, Canada
    Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal de São Carlos, Via Washington Luiz, km 325, São Carlos 13565-905, Brazil)

  • Daniel Rodrigo Leiva

    (Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Via Washington Luiz, km 325, São Carlos 13565-905, Brazil)

  • Guilherme Zepon

    (Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Via Washington Luiz, km 325, São Carlos 13565-905, Brazil)

  • Walter José Botta

    (Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, Via Washington Luiz, km 325, São Carlos 13565-905, Brazil)

  • Jacques Huot

    (Institut de Recherche sur l’Hydrogène, Universitè du Québec à Trois-Rivières, 3351 des Forges, Trois-Rivières, QC G9A 5H7, Canada)

Abstract

In this paper, we report an investigation of adding a non-hydride forming element in the multicomponent Ti-V-Nb-M system. By the Calculation of Phase Diagrams approach (CALPHAD), the thermodynamic phase stability of the TiVNbT (T = Cr, Mn, Fe, Co, and Ni) was investigated, and Cr was selected as the fourth alloying element due its high tendency to stabilize body-centered cubic solid solutions (BCC). The (TiVNb) 100−x Cr x alloys (with x = 15, 25, and 35 at.% Cr) were synthesized by arc-melting. The structural characterization reveals that the three alloys were composed of a major BCC phase, which agrees with the thermodynamic calculations. The three alloys absorb hydrogen at room temperature without any activation treatment, achieving a hydrogen uptake of about H/M = 2. The Pressure-Composition-Isotherms curves (PCI) has shown that increasing the Cr amount increases the equilibrium pressures, indicating that tunable H storage properties can be achieved by controlling the alloys’ Cr content.

Suggested Citation

  • Renato Belli Strozi & Daniel Rodrigo Leiva & Guilherme Zepon & Walter José Botta & Jacques Huot, 2021. "Effects of the Chromium Content in (TiVNb) 100−x Cr x Body-Centered Cubic High Entropy Alloys Designed for Hydrogen Storage Applications," Energies, MDPI, vol. 14(11), pages 1-11, May.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:11:p:3068-:d:561763
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    References listed on IDEAS

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    1. Wei, T.Y. & Lim, K.L. & Tseng, Y.S. & Chan, S.L.I., 2017. "A review on the characterization of hydrogen in hydrogen storage materials," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 1122-1133.
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    Cited by:

    1. Cermak, Jiri & Kral, Lubomir & Roupcova, Pavla, 2022. "Hydrogen storage in TiVCrMo and TiZrNbHf multiprinciple-element alloys and their catalytic effect upon hydrogen storage in Mg," Renewable Energy, Elsevier, vol. 188(C), pages 411-424.
    2. Cermak, Jiri & Kral, Lubomir & Roupcova, Pavla, 2022. "A new light-element multi-principal-elements alloy AlMg2TiZn and its potential for hydrogen storage," Renewable Energy, Elsevier, vol. 198(C), pages 1186-1192.

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