Abstract
The hydrogen sorption properties of the nanocomposite 85 wt.% Mg–15 wt.% Mg2Ni0.8Co0.2 obtained by mechanical alloying in inert atmosphere were investigated. Absorption measurements were performed under a hydrogen pressure P = 1 MPa at temperartures ranging from 373 to 573 K, while desorption studies proceeded at P = 0.15 MPa and temperatures of 573 and 553 K. The addition of the intermetallic compound Mg2Ni0.8Co00.2 was shown to improve the hydriding kinetics of magnesium. The composite exhibited a high hydrogen capacity which did not decrease even after a large number of absorption–desorption cycles. Comparison of the hydriding kinetics of the intermetallic compounds Mg2Ni and Mg2Ni0.8Co0.2 indicated facilitation of the process by the presence of cobalt in the alloy. Magnetic measurement data on Mg2Ni0.8Co0.2 showed formation of superparamagnetic precipitations of nickel and cobalt playing the role of active centres for dissociative chemisorption of hydrogen. The behaviour of the composite was explained by the catalytic effect of the intermetallic Mg2Ni0.8Co00.2, the existence of Ni and Co clusters on the surface and the process of mechanical alloying.
Similar content being viewed by others
References
Ivanov EYu, Konstanchuk IG, Stepanov AA, Boldyrev VV (1986) Dokl Akad Nauk SSSR 286:385
Bobet J-L, Akiba E, Darriet B (2001) Int J Hydrogen Energy 26:493
Zaluska A, Zaluski L, Ström-Olsen JO (2001) Appl Phys A, Mater Sci Proc 72:157
Khrussanova M, Terzieva M, Peshev P, Konstanchuk I, Ivanov E (1989) Z Phys Chem (NF) 164:1261
Khrussanova M, Terzieva M, Peshev P (1990) Int J Hydrogen Energy 15:799
Bobet J-L, Akiba E, Nakamura Y, Darriet B (2000) Int J Hydrogen Energy 25:987
Oelerich W, Klassen T, Bormann R (2001) J Alloys Comp 315:37
Terzieva M, Khrussanova M, Peshev P, Radev D (1995) Int J Hydrogen Energy 20:53
Sai Raman SS, Davidson DJ, Srivastava ON (1999) J Alloys Comp 292:202
Khrussanova M, Bobet J-L, Terzieva M, Chevalier B, Radev D, Peshev P, Darriet B (2000) J Alloys Comp 307:283
Bobet J-L, Grigorova E, Khrussanova M, Khristov M, Peshev P (2002) J Alloys Comp 345:280
Khrussanova M, Grigorova E, Bobet J-L, Khristov M, Peshev P (2004) J Alloys Comp 365:308
Tanguy B, Soubeyroux JL, Pezat M, Portier J, Hagenmuller P (1976) Mater Res Bull 11:1441
Darnaudery JP, Darriet B, Pezat M (1983) Int J Hydrogen Energy 8:705
Dehouche Z, Klassen T, Oelerich W, Goyette J, Bose TK, Schulz R (2002) J Alloys Comp 347:319
Grigorova E, Khristov M, Khrussanova M, Bobet J-L, Peshev P (2005) Int J Hydrogen Energy 30:1099
Siegmann HC, Schlapbach L, Brundle CR (1978) Phys Rev Lett 40:972
Schlapbach L, Shaltiel D, Oelhafen P (1979) Mater Res Bull 14:1235
Stucki F, Schlapbach L (1980) J Less-Common Met 74:143
Khrussanova M, Zhecheva E, Stoyanova R, Peshev P, Darriet B, Chambon M (1993) Mater Res Bull 28:377
Lim SH, Lee JY (1983) Int J Hydrogen Energy 8:369
Song MY, Lee JY (1983) Int J Hydrogen Energy 8:363
Boudart M, Delbouille A, Derouane EG, Indovina V, Walters AB (1972) J Am Chem Soc 94:6622
Acknowledgements
Thanks are due to Dr. E. Zhecheva for her help in magnetic measurements. The financial support of the National Fund of Scientific Investigations of Bulgaria under Contract No X-1407/2004 is highly appreciated.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Khrussanova, M., Mandzhukova, T., Grigorova, E. et al. Hydriding properties of the nanocomposite 85 wt.% Mg–15 wt.% Mg2Ni0.8Co0.2 obtained by ball milling. J Mater Sci 42, 3338–3342 (2007). https://doi.org/10.1007/s10853-006-0586-6
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-006-0586-6