还原氧化石墨烯/碳纳米管透明导电薄膜的制备及性能研究

Preparation and properties of reduced grapheneoxide/carbon nanotubes transparent conductive films

使用天然植物多酚——单宁酸(TA)作为氧化石墨烯(GO)的还原剂,通过“一步法”实现了对GO的绿色还原和功能化。随后,将TA还原氧化石墨烯(RGO)和碳纳米管(SWCNT)结合起来,共同构筑具有三维结构的石墨烯/单壁碳纳米管(RGO/SWCNT)透明导电薄膜(TCFs)。该薄膜有着良好的导电性(透光率为75.1%时,面电阻为36.1Ω/sq)、较低的粗糙度(薄膜的粗糙度仅为5.45 nm)、优异的柔性(经过1000次弯折试验后,薄膜的面电阻保持不变)和较好的界面黏附力(薄膜的黏附因子均大于0.9)。该复合薄膜拥有良好的性能可以应用在柔性可穿戴器件领域。

In this paper,natural plant polyphenol-tannic acid(TA)is used as the reducing agent of graphene oxide(GO),and the green reduction and functionalization of GO are realized through the"one-step method".Subsequently,the TA reduced graphene oxide(RGO)and single-walled carbon nanotubes(SWCNT)are combined to jointly construct a RGO/SWCNT conductive film with a three-dimensional structure.The transparent conductive film(TCF)has good electrical conductivity(when the light transmittance is 75.1%,the surface resistance is 36.1Ω/sq),low roughness(the roughness of the film is only 5.45 nm),excellent flexibility(after 1000 cycles of bending,the sheet resistance of the film remains unchanged)and good interfacial adhesion(the adhesion factor of the film is all>0.9).The composite film has good performance and can be applied in the field of flexible wearable devices.