Research on the electrochemical properties of composite fiber Ti3C2Tx/rGO
In order to solve the problem of insufficient interlayer interaction force of Ti3C2Tx,taking two dimensional layered titanium carbide(Ti3C2Tx)and graphene oxide(GO)as raw materials,Ti3C2Tx/GO fiber is synthesized by wet-spinning technology to prepare electrode materials with excel-lent electrochemical performance.Then,Ti3C2Tx/rGO composite fiber is prepared by chemical reduc-tion.The raw materials and Ti3C2Tx/rGO composite fiber are characterized by adopting field emission scanning electron microscopy(FESEM),atomic force microscopy(AFM)and multifunctional X-ray photoelectron spectroscopy(XPS).Besides,the electrochemical properties of Ti3C2Tx/rGO com-posite fiber are tested.The results show that when the injection speed of spinning solution is 5 mL/h,the coagulation bath is acetic acid,and a 22G needle is used,the spun fiber shows good continuity with the best spinning effect.When the mass ratio of Ti3C2Tx to GO is 2:8,the composite fiber shows the best electrochemical performance.The volume-specific capacitance can reach 426.15 F/cm3 at the current density of 1 A/cm3,and the capacitance retention rate reaches more than 59％after 1 000 cycles.The synergistic effect between Ti3C2Tx and rGO,as well as the wrin-kled structure inside the fiber,provide excellent electrochemical performance and transport characte-ristics for Ti3C2Tx/rGO composite fiber.The composite fiber prepared in this experiment can provide guidance for the design of high performance electrode materials.
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