MSb2型金属间化合物作为锂离子电池负极材料的研究

采用真空悬浮熔炼与高能球磨制备了MSb2(M＝Co和Fe)型合金粉末，利用恒电流电池测试仪研究了其电化学性能。研究发现CoSb2和FeSb2电极的嵌/脱锂平台均在0.8和1.0V左右；在20mA/g电流密度下的首次嵌锂反应的可逆容量为430mAh/g；电流密度为100mA/g条件下，CoSb2首次嵌锂反应的可逆容量为380mAh/g，FeSb2首次嵌锂反应的可逆容量340mAh/g。所以，MSb2型金属锑化物可以作为锂离子电池负极材料的侯选材料。，Sb-based inter-metallic compounds(MSb2) were prepared by levitation melting and milled by high-energy ball-mill.Experiments show that the plateaus of lithium ion insertion and extraction were at about 0.8 and 1.0V. Their reversible capacities are all about 430mAh/g and their cycle lives are almost same during the cycling at the current density of 20mA/g.But at the current density of 100mA/g they both have a little difference in the cycle life.The materials show the superior properties and can be considered as a candidater for the anode materials of lithium ion batteries.

Study on the Metallic Compounds of MSb2 as Anode Material for Lithium Ion Batteries

Sb|based inter|metallic compounds(MSb-2) were prepared by levitation melting and milled by high|energy ball|mill.Experiments show that the plateaus of lithium ion insertion and extraction were at about 0^8 and 1^0V. Their reversible capacities are all about 430mAh/g and their cycle lives are almost same during the cycling at the current density of 20mA/g.But at the current density of 100mA/g they both have a little difference in the cycle life.The materials show the superior properties and can be considered as a candidater for the anode materials of lithium ion batteries.