| 초록 |
Tin sulfide encapsulated porous carbon nanofiber (SnS/CNF) composites are synthesized by an electrospinning process of tin acetate, polyvinylpyrrolidone (PVP), and polyacrylonitrile (PAN) in dimethylformamide (DMF), followed by calcination. Tin sulfide (SnS) has high theoretical capacity (~780 mA h g-1), better structural stability than tin oxides, and has good conductivity with its low band gap, but it still has limitations of poor cycling retention and fast capacity decay. We developed SnS/CNF which is very suitable for enhancing electrochemical performance by giving cushioning effect hampering pulverization of metal particles and offering facile electron pathway with high electrical conductivity. As a result, SnS/CNF composites plays important roles in facilitating mass transfer and charge transfer, and sustaining structural integrity, which leads to the superior electrochemical performance. |
