Forcespinning of Microfibers and their Applications in Lithium-ion and Sodium-ion Batteries

摘要

In this paper, a scalable technique, Forcespinning (FS) is employed to produce SnO_2/carbon composite microfibers as anode materials for lithium-ion batteries (LIBs) and sodium-ion batteries (SBIs). The fiber preparation process involved the FS of Tin (Ⅱ) 2-ethylhexanoate/PAN and PAN solution precursors into fibers and subsequently stabilizing in air at 280℃ and calcined at 800℃ under an inert atmosphere. A hollow and pore microstructure of the SnCVCFs were produced that were flexible and were directly used as free-standing anodes in LIBs and SBIs An improved electrochemical performance was observed in the SnCVC composite electrode in particular for the sodium ion battery (SIB), with a recorded specific capacity of 198 mAhg~(-1) after 50 cycles at a current density of 100 mAg~(-1). The FS method clearly produced both carbon and SnCVC composite fiber electrodes that showed improved electrochemical performance for the SIB due largely to the unique structure and properties of the microfibers.