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BY-NC-ND 3.0 license Open Access Published by De Gruyter Open Access January 23, 2013

Microstructures and electrode performances of Mg50Ni(50-X)Pdx alloys

Sydney Santos, José Castro and Edson Ticianelli
From the journal Open Chemistry


Magnesium and several of its alloys can absorb large amounts of hydrogen. This feature is desirable for several technological applications such as solid state hydrogen storage tanks and anodes of nickel-metal hydride (Ni-MH) batteries. For the latter, Mg-Ni alloys are considered very promising due to their high discharge capacities. Conversely, the low stability of Mg-Ni alloys in alkaline electrolytes have hindered their practical use. In the present manuscript, the effects of palladium black addition on the structure and electrochemical properties of the Mg50Ni50 (in at.%) alloy were investigated. The studied ternary alloys have general composition of Mg50Ni(50-x)Pdx, with 0 ≤ x ≤ 5 (in at.%). These alloys were synthesized by mechanical alloying from pure elements. The alloy powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray absorption spectroscopy (XAS) while their electrode performances were evaluated by galvanostatic cycles of charge and discharge. The investigated alloys have multi-phase structures composed of amorphous and nanocrystalline phases, with nano-grain sizes of nearly 5 nm. Concerning the electrode performance, the best results were attained by the Mg50Ni47.5Pd2.5 alloy, which kept a high discharge capacity and improved the cycling stability.

[1] M.A. Fetcenko, S.R. Ovshinsky, B. Reichman, K. Young, C. Fierro, A. Zallen, W. Mays, T. Ouchi, J. Power Sources 165, 544 (2007) in Google Scholar

[2] S.F. Santos, T.T. Ishikawa, E.A. Ticianelli, In: J.R. Telle, N.A. Pearstine (Eds.), Amorphous Materials: Research, Technology and Applications (Nova Science, New York, 2009) 219 Search in Google Scholar

[3] P.H.L. Notten, M. Ouwerkerk, H. van Hal, D. Beelen, W. Keur, J. Zhuo, H. Feil, J. Power Sources 129, 45 (2004) in Google Scholar

[4] X. Zhao, L. Ma, Int. J. Hydrogen Energy 34, 4788 (2009) in Google Scholar

[5] S.F. Santos, J.F.R. de Castro, T.T. Ishikawa, E.A. Ticianelli, J. Alloys Compd. 434, 756 (2007) in Google Scholar

[6] S.F. Santos, J.F.R. de Castro, T.T. Ishikawa, E.A. Ticianelli, J. Mater. Sci. 43, 2889 (2008) in Google Scholar

[7] C. Rongeat, L. Roué, J. Alloys Compd, 404, 679 (2005) in Google Scholar

[8] E.C. Souza, J.F.R. de Castro, E.A. Ticianelli, J. Power Sources 160, 1425 (2006) in Google Scholar

[9] L.-J. Huang, Y.-X. Wang, J.-G. Tang, J.-Q. Liu, Y. Wang, J.-X. Liu, Z. Huang, Int. J. Electrochem. Sci. 6, 6200 (2011) Search in Google Scholar

[10] J.-J. Jiang, M. Gasik. J. Power Sources 89, 117 (2000) in Google Scholar

[11] E. Souza, E.A. Ticianelli, Int. J. Hydrogen Energy 32, 4917 (2007) in Google Scholar

[12] J.F.R. de Castro, S.F. Santos, F.R. Nikkuni, T.T. Ishikawa, E.A. Ticianelli, J. Alloys Compd. 498, 57 (2010) in Google Scholar

[13] L. Zaluski, A. Zaluska, P. Tessier, J.O. Ström-Olsen, R. Schulz, Mater. Sci. Forum 225, 853 (1996) in Google Scholar

[14] T. Ma, Y. Hatano, T. Abe, K. Watanabe, J. Alloys Compd. 372, 251 (2004) in Google Scholar

[15] S.-I. Yamaura, H.-Y. Kim, H. Kimura, A. Inoue, Y. Arata, J. Alloys Compd. 347, 239 (2002) in Google Scholar

[16] C. Rongeat, M.H. Grosjean, S. Ruggeri, M. Dehmas, S. Bourlot, S. Marcotte, L. Roué, J. Power Sources 158, 747 (2006) in Google Scholar

[17] Y. Hatano, T. Tachikawa, D. Mu, T. Abe, K. Watanabe, S. Morozumi, J. Alloys Compd. 330, 816 (2002) in Google Scholar

[18] S.-C. Han, P.S. Lee, J.-Y. Lee, A. Zuttel, L. Schlapbach, J Alloys Compd 306, 219 (2000) in Google Scholar

[19] H. Ye, Y.Q. Lei, L.S. Chen, H. Zhang, J. Alloys Compd. 311, 194 (2000) in Google Scholar

[20] H. Y. Lee, N. H. Goo, W. T. Jeong, K. S. Lee, J. Alloys Compd. 313, 258 (2000) in Google Scholar

[21] T.B. Massalski, ASM/NIST Data Program for Alloy Phase Diagrams on CD-ROM, OH 44073, USA. Search in Google Scholar

[22] M. Nakagawa, S. Matsuya, K. Udoh, Dental Mater. J. 21, 83 (2002) in Google Scholar

[23] A.J. Maeland, G.G. Libowitz, J. Less-Commomn Metals 101, 131 (1984) in Google Scholar

[24] R. Kirchheim, F. Sommer, G. Schluckebier, Acta Metall. 30, 1059 (1982) in Google Scholar

[25] W. Liu, H. Wu, Y. Lei, Q. Wang, J. Wu, J. Alloys Compd. 252, 234 (1997) in Google Scholar

Published Online: 2013-1-23
Published in Print: 2013-4-1

© 2013 Versita Warsaw

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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