【摘要】 以茶多酚/铝片作为还原剂,通过对氧化石墨烯(GO)还原制备石墨烯(RGO),并将石墨烯与纤维素复合制备石墨烯基导电纸;在分析石墨烯结构特征的基础上,研究了石墨烯与纤维素配比、石墨烯基导电纸定量、弯折次数及角度对导电纸性能的影响,并对石墨烯基导电纸的电容性进行了测试。结果表明,茶多酚/铝片可有效还原氧化石墨烯,石墨烯的sp2电子共轭结构得到有效重建;当纤维素/石墨烯为1:1、定量为72 g/m2时,石墨烯基导电纸方阻为66.33Ω/sq,弹性模量高达1234.00 MPa。石墨烯基导电纸具有优异的柔性及导电稳定性,在反复弯折及90°及-90°的条件下,其电阻比值均在1.0左右;石墨烯基导电纸的面积比电容为5.47 m F/cm2,具有较好的电容性。更多还原

【Abstract】 Tea polyphenols and aluminum flakes was utilized as the reductants to reduce graphene oxide and then synthesize graphene, the as-prepared graphene was then to prepare the graphene-based conductive paper recombination with cellulose. The influence of composite ratio between cellulose and graphene, the conductive paper ration, the folding times and angles to the conductive paper’s electrical property were discussed. The results show that graphene oxide can be reduced effectively by tea polyphenols and aluminum flakes, the sp2 structure can be restored effectively. The optimal conditions is composite ratio between cellulose and graphene 1:1, the conductive paper ration 72 g/m2, the sheet resistanceand elasticity modulus of the as-prepared conductive paper is 66.33 Ω/sqand 1234.00 MPa. The conductive paper reserved good conductivity after 500 times folding and different folding angles, the ratio between after-folded resistanceand initial resistance is near 1.0. Besides, the specific capacitance of the conductive paper is 5.47 m F/cm2, which suggests a good capacitive performance.更多还原