同轴纺线型非对称超级电容器的制备与性能  

Preparation of Coaxial Wire-Like Asymmetric Supercapacitor and Its Properties

作　　者：陆赞 龙海如 

机构地区：[1]东华大学纺织学院,上海201620 [2]东华大学产业用纺织品教育部工程研究中心,上海201620

出　　处：《东华大学学报（自然科学版）》2017年第6期813-818,共6页Journal of Donghua University(Natural Science)

摘　　要：在现有同轴纺丝的基础上,设计并制备了以碳纳米管为芯结构,海藻酸钠为中间层结构,再以化学气相沉积的方法在海藻酸钠外形成聚吡咯层的一种具有多层结构的复合纤维.通过对纤维结构的表征,确定了各组分之间的关系及其在纤维中的分布情况.复合纤维的拉伸强度和杨氏模量可以分别达到64.8 MPa和2.2GPa,并且断裂伸长率为3.5%.在此基础上引入三轴纺技术,将导电棉线作为碳纳米管的承载体和集流器,制备出线型非对称超级电容器.在电流密度为0.5A/g的条件下,其比电容量可以达到25.1F/g,在2 000次充放电循环后比电容量还能保持在原有的86.2%,有望在大规模集成的智能纺织品上为电子元器件提供能源.On the basis of existing coaxial spinning technique, a composite fiber with multilayer structure was prepared by setting carbon nanotube dispersions as the core layer and coagulated alginate as the middle layer, and a polypyrrole layer was then formed outside the alginate by chemical vapor deposition. The relationship between each component and its distribution in the fiber was characterized. For the mechanical properties of composite fiber, the tensile strength and Young＇s modulus could be reached at 64.8 MPa and 2.2 GPa respectively, as well as a strain of 3.5%. In order to develop a new type of wire- like asymmetric supercapacitor, a triaxial spinning method was introduced by using the conductive cotton yarn as the carrier and current collector of carbon nanotube. This sort of wire-like asymmetric supercapacitor has the specific capacitances of 25.1 F/g at a current density of 0.5 A/g and can remain at 86. 2% after 2000 galvanostatic charge-discharge cycles, which is expected to provide energy for electronic components integrated in the smart textiles.

关 键 词：智能纺织品 同轴纺 聚吡咯 海藻酸钠 碳纳米管 超级电容器 

分 类 号：TS101.8[轻工技术与工程—纺织工程]