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通过感应熔炼和退火的方法制备了2H-A_(2)B_(7)和3R-A_(2)B_(7)相共存的La_(0.58)Nd_(0.13)Mg_(0.26)Ni_(3.4)合金,研究了退火温度对La_(0.58)Nd_(0.13)Mg_(0.26)Ni_(3.4)合金物相组成、电化学和动力学性能的影响。结果表明:不同退火温度下La_(0.58)Nd_(0.13)Mg_(0.26)Ni_(3.4)合金的物相组成都为Gd_(2)Co_(7)型3R-A_(2)B_(7)和Ce_(2)Ni_(7)型2H-A_(2)B_(7