将反相微乳液工艺用于制备纳米储锂合金，成功地制备出了具有无定形结构的铜锡合金纳米颗粒，避免了电极的粉化问题，改善了合金负极的循环性能。但纳米合金表面SEI膜的成膜反应造成了较大的不可逆容量。纳米颗粒之间的接触电阻导致电极导电性较差。实验证明，纳米铜锡合金的颗粒尺寸与电极中导电剂含量的匹配问题对电极的电化学性能有较大的影响，当导电剂含量为40%时，粒径范围在50-60nm的铜锡合金具有最佳的电化学性能。
A reverse microemulsion technique was applied to prepare nanometer lithium storage alloy. Nanometer particles of copper-tin alloy with amorphous structures were successfully prepared. Because the electrode pulverization problem can be relieved by its small particle size, nanometer copper-tin alloy anode had a good cycle performance. However, a great irreversible capacity was caused by the formation of a SEI layer on the surface of nanometer alloy and the contact resistance between nanometer particles resulted in the poor electric conductivity. It is proved by experiments that the match of particle size and conductive agent content has a great impact on the electrochemical performance of the nanometer copper-tin alloy anode. When the conductive agent content increased to 40%, the nanometer copper-tin alloy with particle size of 50-60nm presented the best performance.
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