静电纺丝结合还原氮化法制备多孔TiN纤维及其电化学性能  

Synthesis of Porous TiN Fiber via Reduction-nitridation Based on Electrospinning and Its Electrochemical Performance

作　　者：吕东风 卜景龙 魏恒勇 崔燚 倪洁 刘盼 刘会兴 魏颖娜 张利芳 

机构地区：[1]华北理工大学,河北唐山063009 [2]河北省无机非金属材料重点实验室,河北唐山063009

出　　处：《稀有金属材料与工程》2017年第10期3135-3140,共6页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(51272066;51302064);河北省自然科学基金(E2013209183);华北理工大学科学研究基金(Z201413)

摘　　要：采用静电纺丝结合还原氮化法制备多孔TiN纤维,利用XRD、SEM、TEM和N_2吸脱附等分析其结构,使用循环伏安和充放电测试其电化学性能。结果表明,纤维为立方TiN相,纤维连续,存在较为丰富的介孔结构,其比表面积为21.55 m^2/g。样品在不同扫率下的CV曲线均呈类矩形,由电流密度为20 mA/g时GCD曲线计算其比电容为24.03 F/g,在电流密度为50 mA/g时,经4500次充放电循环后样品的比电容仍能保持90%以上,当功率密度为20 W/kg时,样品的能量密度为3.3 Wh/kg。因此,采用本方法制备的多孔TiN纤维在超级电容器领域具有应用潜力。The porous titanium nitride fibers were prepared by electrospinning combined with reduction-nitride process. The structure of the prepared fibers was characterized by XRD, SEM, TEM and BET. And the electrochemical property was tested by cyclic voltammetry and charge-discharge measurements. The results show that the synthesized TiN continuous fiber is cubic TiN phase, and there exists abundant mesoporous structure. The specific surface area of the fiber is 21.55 m^2/g. The CV curves at different scan rates are similar to a rectangle. The specific capacitance is 24.03 F/g when the current density is 20 mA/g. When the current density is 50 mA/g, the specific capacitance remains above 90 % after charge-discharge measurement for 4500 times. Moreover, when the power density is 20 W/kg, the energy density is 3.3 Wh/kg. In summary, the porous TiN fibers have great potential application in the field of super capacitor.

关 键 词：多孔TiN纤维 静电纺丝 还原氮化 电化学性能 

分 类 号：TQ343[化学工程—化纤工业]