研究了添加5种稀土元素对Ti0.26Zr0.07V0.24Mn0.1Ni0.33合金的微观结构和电化学性能的影响. 结果表明,Ti0.26Zr0.07V0.24Mn0.1Ni0.33和Ti0.26Zr0.07V0.24Mn0.1Ni0.33RE0.01(RE=La,Ce,Pr,Nd,Gd)合金均由体心立方结构的BCC主相和少量六方结构的C14 型Laves相组成; 在合金中加入稀土元素,会使合金中两相的晶胞体积同时增大. 添加5种稀土元素都可以改善合金电极的活化性能,而对合金电极其他性能的影响则各有不同,其中添加铈和镨可以提高合金电极的最大放电容量,而添加钕和钆能改善合金电极的循环稳定性. 工作温度对合金电极的放电容量影响较大,过高的温度使其循环容量衰减加剧; 而含稀土元素的合金电极在333 K温度下放电容量达到最大值. 稀土对合金电极的荷电保持率产生一定影响; 镧、铈、镨的添加能够改善合金电极的倍率放电性能.
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