研究了球磨添加CeO2对La2Mg17-50％(质量分数,下同)Ni复合合金的相结构和储氢性能的影响,并对合金的形貌和吸放氢性能进行了检测.XRD结果表明,球磨加入CeO2后,在La2Mg17-50％ Ni合金中除了Mg2Ni和Ni相外,产生CeMg12相.SEM形貌图清晰地看见CeO2附在La2Mg17-50％Ni合金表面上呈白色小颗粒.吸氢动力学性能表明,加入CeO2后,使La2Mg17-50％ Ni合金的最大吸氢量从3.298％增加到3.594％.添加CeO2后合金的最佳饱和吸氢温度降为200℃(3 MPa),且吸氢动力学性能提高至1 min内的吸氢量达到3.382％,是其最大吸氢量的94％.然而,CeO2在放氢过程中的积极作用并不明显.
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