利用静电纺丝技术结合水热法制备了一种柔性TiO₂@CNFs@SnS₂复合纳米纤维薄膜。超薄的SnS₂纳米片生长在TiO₂的碳纳米纤维上形成分层独特的柔性纤维薄膜，其作为锂离子电池的负极材料具备优异的电化学性能，在0.2 A/g的电流密度下充放电循环300次，可逆容量能保持在400 mA·h/g左右。此外，该电极也表现出优异的倍率性能，即使在2 A/g电流密度下循环300圈可逆容量仍达100 mA·h/g以上。

A flexible TiO₂@CNFs@SnS₂ composite nanofiber film is prepared by electrostatic spinning technology and hydrothermal method.Ultra-thin SnS₂ nanosheets grow on carbon nanofibers with TiO₂ to form a layered unique flexible fiber film that has excellent electrochemical performance as a negative electrode material for lithium-ion batteries.The reversible specific capacity of the electrode can maintain around 400 mAh·g^-1 after 300 cycles at a current density of 0.2 A·g^-1.In addition,this electrode exhibits excellent rate performance,its reversible capacity can exceed 100 mAh·g^-1 after 300 cycles even at 2 A·g^-1 of current density.

方雪(1993-),女,硕士研究生,主要从事材料的晶体结构解析和锂离子、钠离子电池的研究,fangxue1207@163.com;卢锋奇(1984-),男,博士,副研究员,主要从事锂离子电池电极材料和锂离子导体的合成、结构分析及电化学性能研究,lufengqi@glut.edu.cn。