Effect of Ti Content on Hydrogen Storage Properties of Amorphous MgNi Alloy

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Cycle capacities of Amorphous Mg-Ni alloys declined so fast therefore they can’t be used practically. In this paper,the influence of adding Ti on the discharge capacity and cycle stability of the alloys were investigated. Amorphous Mg1-xTixNi (x=0, 0.1, 0.2, 0.3) alloy powder was prepared successfully by mechanical alloying (MA). X-ray diffraction (XRD) results show that MgNi alloy formed completely amorphous phase after ball milling with 15h. But for Mg1-xTixNi (x=0.1, 0.2, 0.3) alloy, it took 23h. It can be concluded that Ti partial substituting Mg would decrease the amorphous phase forming ability of Mg-Ni based alloy. Compared with amorphous MgNi alloy, the maximal discharge capacities of Mg1-xTixNi (x=0.1, 0.2, 0.3) alloy were decreased slightly, but the cycle stabilities were significantly enhanced. Mg0.9Ti0.1Ni alloy showed the largest discharge capacity and the best cycle stability.

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Edited by:

Yafang Han, Tianmin Wang and Shaoxiong Zhou

Pages:

234-238

Citation:

S. Gao et al., "Effect of Ti Content on Hydrogen Storage Properties of Amorphous MgNi Alloy ", Materials Science Forum, Vol. 650, pp. 234-238, 2010

Online since:

May 2010

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$38.00

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