Synthesis, structure, and hydrogen sorption properties of the Nd0.5Pr0.5MgNi4–xFex and Nd0.5Pr0.5MgNi4–xCux (x  0.5, 1, 2) alloys

Authors

DOI:

https://doi.org/10.15407/dopovidi2021.06.059

Keywords:

rare earth and magnesium alloys, crystal structure, hydrides, electrochemical properties

Abstract

New Nd0,5Pr0,5MgNi4–x(Fe, Cu)x (x  0.5, 1, 2) alloys are synthesized by the sintering method and characterized by the X-ray powder diffraction method. The crystal structure and hydrogen sorption properties are studied for some of them. Three hydrides with orthorhombic structure are prepared. Electrode materials for all alloys were made, and their main electrochemical characteristics (maximum discharge capacity and cyclic stability) were established. Additionally, obtained results are compared with related compounds of the composition Nd0,5Pr0,5MgNi4–xCox and discussed.

References

Villars, P. & Cenzual, K. (2021). Pearson’s Crystal Data - Crystal Structure Database for Inorganic Compounds. Release 2020/21. ASM International. Materials Park. OH.

Verbovytskyy, Yu. V. & Zavaliy, I. Yu. (2017). New metal-hydride electrode materials based on R2–xMgxNi4 alloys for chemical current sources. Materials science, 52, pp. 747-759. https://doi.org/10.1007/s11003-017-0018-6

Wang, Z. M., Zhou, H. Y., Cheng, G., Gu, Z. F. & Yu, A. B. (2004). Preparation and electrode properties of new ternary alloys: REMgNi4 (RE  La, Ce, Pr, Nd). J. Alloys Compd., 384, Iss. 1-2, pp. 279-282. https://doi. org/10.1016/j.jallcom.2004.04.087

Sakaki, K., Terashita, N., Tsunokake, S., Nakamura, Y. & Akiba, E. (2012). Effect of rare earth elements and alloy composition on hydrogenation properties and crystal structures of hydrides in Mg2–xRExNi4. J. Phys. Chem. C, 116, pp. 19156-19163. https://doi.org/10.1021/jp3052856

Denys, R. V., Riabov, A. B., Černý, R., Koval’chuk, I. V. & Zavaliy, I. Yu. (2012). New CeMgCo4 and Ce2MgCo9 compounds: Hydrogenation properties and crystal structure of hydrides. J. Solid St. Chem., 187, pp. 1-6. https://doi.org/10.1016/j.jssc.2011.10.040

Sakaki, K., Terashita, N., Kim, H., Proffen, T., Majzoub, E. H., Tsunokake, S., Nakamura, Y. & Akiba, E. (2013). Crystal structure and local structure of Mg2–xPrxNi4 (x  0,6 and 1.0) deuteride using in situ neutron total scattering. Inorg. Chem., 52, № 12, pp. 7010-7019. https://doi.org/10.1021/ic400528u

Shtender, V. V., Denys, R. V., Paul-Boncour, V., Riabov, A. B. & Zavaliy, I. Yu. (2014). Hydrogenation properties and crystal structure of YMgT4 (T  Co, Ni, Cu) compounds. J. Alloys Compd., 603, pp. 7-13. https://doi.org/10.1016/j.jallcom.2014.03.030

Shtender, V. V., Denys, R. V., Paul-Boncour, V., Verbovytskyy, Yu. V. & Zavaliy, I. Yu. (2015). Effect of Co substitution on hydrogenation and magnetic properties of NdMgNi4 alloy. J. Alloys Compd., 639, pp. 526-532. https://doi.org/10.1016/j.jallcom.2015.03.187

Verbovytskyy, Yu. V., Shtender, V. V., Lyutyy, P. Ya. & Zavaliy, I. Yu. (2017). Electrode materials based on LaMgNi4–xCox (0 < x < 1) alloys. Powder Met. Met. Ceramics, 55, pp. 559-566. https://doi.org/10.1007/s11106-017-9839-y

Verbovytskyy, Yu. V., Shtender, V. V., Hackemer, A., Drulis, H., Zavaliy, I. Yu. & Lyutyy, P. Ya. (2018). Solidgas and electrochemical hydrogenation properties of the La1–xNdxMgNi4–yCoy alloys. J. Alloys Compd., 741, pp. 307-314. https://doi.org/10.1016/j.jallcom.2018.01.067

Oprysk, V. O., Verbovytskyy, Yu. V., Shtender, V. V., Lyutyy, P. Ya. & Zavaliy, I. Yu. (2018). The Pr1–xLaxMgNi4–yCoy alloys: Synthesis, structure and hydrogenation properties. Solid State Sciences, 84, pp. 112-119. https://doi.org/10.1016/j.solidstatesciences.2018.08.009

Shtender, V. V., Paul-Boncour, V., Denys, R. V., Crivello, J.-C. & Zavaliy, I. Yu. (2020). TbMgNi4–xCox−(H,D)2 system. I: Synthesis, hydrogenation properties, and crystal and electronic structures. J. Phys. Chem. C, 124, pp. 196-204. https://doi.org/10.1021/acs.jpcc.9b10252

Verbovytskyy, Yu. V., Zavaliy, I. Yu., Berezovets, V. V. & Lyutyy, P. Ya. (2020). Solid gas and electrochemical hydrogenation properties of the R1–xR’xMgNi4–yCoy (R, R’  Y, La, Ce) alloys. Phys. Chem. Solid State, 21, pp. 503-509. https://doi.org/10.15330/pcss.21.3.503-509

Verbovytskyy, Yu., Kosarchyn, Yu. & Zavaliy, I. (2020). Solid gas and electrochemical hydrogenation properties of the selected R,R’MgNi4–xMx (R,R’  La, Pr, Nd; M  Fe, Mn; x  0.5, 1) alloys. French-Ukrainian Journal of Chemistry, 8, pp. 126-139. https://doi.org/10.17721/fujcV8I2P126-139

Verbovytskyy, Yu., Oprysk, V., Paul-Boncour, V., Zavaliy, Yu., Berezovets, V., Lyutyy, P. & Kosarchyn, Yu. (2021). Solid gas and electrochemical hydrogenation of the selected alloys (R’,R’’)2–xMgxNi4–yCoy (R’, R’’ Pr, Nd; x  0.8 – 1.2; y  0 – 2). J. Alloys Compd., 876, pp. 160155 (1–9). https://doi.org/10.1016/j.jallcom.2021.160155

Published

23.12.2021

How to Cite

Verbovytskyy Ю. ., Zavaliy І. ., Lyutyy П. ., & Berezovets В. . (2021). Synthesis, structure, and hydrogen sorption properties of the Nd0.5Pr0.5MgNi4–xFex and Nd0.5Pr0.5MgNi4–xCux (x  0.5, 1, 2) alloys. Reports of the National Academy of Sciences of Ukraine, (6), 59–67. https://doi.org/10.15407/dopovidi2021.06.059