caa a22 4500 463222776 CHVBK 20180405153217.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10853-007-1689-4 doi (NATIONALLICENCE)springer-10.1007/s10853-007-1689-4 Effects of the substitution of Al for Ni on the structure and electrochemical performance of La0.7Mg0.3Ni2.55− x Co0.45Al x ( x =0-0.4) electrode alloys [Elektronische Daten] [Yanghuan Zhang, Dongliang Zhao, Baowei Li, Huiping Ren, Shihai Guo, Xinlin Wang] In order to improve the cycling stability of La-Mg-Ni system (PuNi3-type) hydrogen storage alloy, Ni in the alloy was partially substituted by Al, and La0.7Mg0.3Ni2.55−x Co0.45Al x (x=0, 0.1, 0.2, 0.3, 0.4) electrode alloys were prepared by casting and rapid quenching. The effects of the substitution of Al for Ni on the structure and electrochemical performance of the as-cast and quenched alloys were investigated in detail. The results obtained by XRD, SEM and TEM show that the substitution of Al for Ni has an inappreciable influence on the abundance of the LaNi2 phase in the as-quenched alloy, while it increases the amount of the LaNi2 phase in the as-cast alloys. In addition, the substitution of Al for Ni is unfavourable for the formation of an amorphous in the as-quenched alloy. The results obtained by the electrochemical measurement indicate that the cycling stabilities of the as-cast and quenched alloys are significantly ameliorated with increasing Al content. When Al content increases from 0 to 0.4, the cycle life of the as-cast and quenched (30m/s) alloys enhances from 72 to 132 cycles and from 100 to 136 cycles, respectively. Springer Science+Business Media, LLC, 2007 Zhang Yanghuan Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut Zhao Dongliang Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut Li Baowei School of Material, Inner Mongolia University of Science and Technology, 014010, Baotou, Inner Mongolia, P.R. China aut Ren Huiping School of Material, Inner Mongolia University of Science and Technology, 014010, Baotou, Inner Mongolia, P.R. China aut Guo Shihai Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut Wang Xinlin Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/19(2007-10-01), 8172-8177 0022-2461 42:19<8172 2007 42 10853 https://doi.org/10.1007/s10853-007-1689-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-007-1689-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhang Yanghuan Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut NATIONALLICENCE 700 1- Zhao Dongliang Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut NATIONALLICENCE 700 1- Li Baowei School of Material, Inner Mongolia University of Science and Technology, 014010, Baotou, Inner Mongolia, P.R. China aut NATIONALLICENCE 700 1- Ren Huiping School of Material, Inner Mongolia University of Science and Technology, 014010, Baotou, Inner Mongolia, P.R. China aut NATIONALLICENCE 700 1- Guo Shihai Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut NATIONALLICENCE 700 1- Wang Xinlin Department of Functional Material Research, Central Iron and Steel Research Institute, 100081, Beijing, P.R. China aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/19(2007-10-01), 8172-8177 0022-2461 42:19<8172 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer