对比研究了烧结法和熔炼法制备的Ti3Ni2合金的储氢性能.结果显示,烧结合金具有多孔特性,有利于提高合金的电化学储氢性能.烧结合金的最大放电容量Cmax为305 mAh/g,其值远高于熔炼合金的Cmax(242 mAh/g).另外,烧结合金在电化学动力学方面也优于熔炼合金,这主要是由于采用烧结法可以改善氢在Ti3Ni2合金中的扩散,从而使氢的扩散系数(D)从7.16×10-10 cm2/s(熔炼合金)提高到3.2×10-9 cm2/s(烧结合金).
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