采用真空蒸镀法制备了金属Sb膜电极,通过XRD、SEM、恒流充放电循环、循环伏安(CV)等方法,研究了Sb膜电极的结构、形貌和电化学性能,并对嵌脱锂机理进行了分析.结果表明:蒸镀后,金属Sb为六方晶体,(003)晶面择优取向.Sb膜电极与基底铜箔的微观形貌接近,Sb金属以片层颗粒堆积在Cu箔颗粒上面.在首次嵌锂过程中,能观察到Li3Sb合金的生成和Sb相的消失,在脱锂之后,能观察到Sb相的重新出现和Li3Sb合金的消失,且Sb相还是回复到(003)面择优相.Sb膜电极的首次充放电比容量分别为652和454mAh/g,循环16周后放电比容量还为300mAh/g,性能远优于Sb粉电极.
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