采用化学镀镍、镀钴、机械混合以及球磨几种方法对Zr-Ti系贮氢合金进行了表面改性.XRD结果表明,随着镀镍量的增加,合金越趋向微晶化;球磨时间越长,合金的衍射峰更加弥散化,充放电试验结果表明,当镀镍量为15%(质量分数,下同)时,贮氢合金在60 mA.g-1的电流密度下初始容量比未处理的合金高出130 mAh.g-1,经过6次～8次循环完全活化,最大放电容量可达400 mAh.g-1,随着镀镍量的增加,抗自放电能力增加;当镀钴量为5%时,贮氢合金在60 mA.g-1的电流密度下初始容量比未处理的合金高出40 mAh.g-1,经过7次～9次循环完全活化,最大放电容量可达390 mAh.g-1,但随着镀钴量的增加,初始容量上升较快,但放电容量在减少;而机械混合仅提高初始容量,对最大放电容量没有改善;球磨不仅改善贮氢合金的活化性能,并且其最大放电容量可达450 mAh.g-1.
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