Electrochemical characteristics of amorphous Mg0.9M0.1Ni (M=Ni, Ti, Zr, Coand Si) ternary alloys prepared by mechanical alloying

Mg0.9M0.1Ni (M=Ni, Ti, Zr, Co or Si) ternary alloys were prepared by mechan ical alloying (MA). The XRD result showed that all ternary alloys were of a morphous structure, with a trace of substitution elements, except for Co. E lectrochemical characteristics of all ternary alloys were studied which wer e compared to MA amorphous MgNi alloy. Experimental results showed that the ternary alloys had a large discharge capacity at room temperature but lowe r than that of the MA MgNi alloy. Partially substituting Mg with Ni, Ti, Co , Si could lead to the improvement of cyclic stability and high rate discha rge capability. Over all, amorphous Mg0.9Ti0.1Ni showed the best synthesis properties. (C) 2000 Elsevier Science S.A. All rights reserved.