초록 |
A tin sulfide has attracted attention as an alternative anode material for lithium ion batteries due to its high theoretical specific capacity (782 mA h g-1). However, it is still limited to apply a tin sulfide in practical application because of its low rate capability and electrochemical stability by poor conductivity leading to undesirable charge transfer. To enhance electrochemical performance, the flexible tin sulfide@carbon nanofibers are synthesized by electrospinning the composite solution of tin acetate, PAN, and PVP in DMF, followed by heat treatment and a solvothermal method for sulfur coating. The SnS@CNF was directly used as an anode without using any binder or metal current collector. The SnS@CNF, the hybrid material of tin sulfide and carbon nanofiber, offers better electrochemical performance due to its 1D structure which allows facile electron transfer by decreasing resistance in both electron and electrolyte flow and maintaining structural integrity. |