二氧化锰@丝素蛋白/还原氧化石墨烯复合薄膜的制备及性能  

Preparation and properties of manganese dioxide@silk fibroin/reduced graphene oxide composite film

作　　者：徐颖淑 叶名宇 邓佳佳 贾红兵[1] XU Ying-shu;YE Ming-yu;DENG Jia-Jia;JIA Hong-bing(School of Chemistry and Chemical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学化学与化工学院,江苏南京210094

出　　处：《石化技术与应用》2025年第2期98-104,共7页Petrochemical Technology & Application

摘　　要：为提高石墨烯基柔性电极的综合性能,通过真空辅助抽滤和化学还原的方式,制备了丝素蛋白/还原氧化石墨烯(SF/rGO)复合薄膜,在硫酸钾/高锰酸钾(K_(2)SO_(4)/KMnO_(4))溶液中,以SF/rGO作为碳源,制备了二氧化锰@丝素蛋白/还原氧化石墨烯(MnO_(2)@SF/rGO)复合薄膜,考察了K_(2)SO_(4)/KMnO_(4)的浸渍时间对MnO_(2)@SF/rGO薄膜的力学性能及电化学性能的影响。结果表明:当浸渍时间为60 min时,制得的MnO_(2)@SF/rGO薄膜具有优异的力学性能与电化学性能,薄膜电极的拉伸强度为(41.4±3.4)MPa,当电流密度为0.25 mA/cm^(2)时,其面积比电容达到548.7 mF/cm^(2);该薄膜组装成的超级电容器器件在0.25 mA/cm^(2)电流密度下,面积比电容为200 mF/cm^(2),在5 mA/cm^(2)的电流密度下循环6000次,仍可保持85%的优异倍率性能。In order to improve the comprehensive performance of graphene-based flexible electrodes,silk fibroin/reduced graphene oxide(SF/rGO)films were prepared by vacuum-assisted filtration and chemical reduction.Manganese dioxide@silk fibroin/reduced graphene oxide(MnO_(2)@SF/rGO)composite films were prepared in potassium sulfate/potassium permanganate(K_(2)SO_(4)/KMnO_(4))solution using SF/rGO as carbon source.The effects of K_(2)SO_(4)/KMnO_(4) impregnation time on the mechanical and electrochemical properties of MnO_(2)@SF/rGO films were investigated.The results showed that the films had excellent mechanical and electrochemical properties when loaded with MnO_(2) for 60 min,and the tensile strength of the film electrodes was 41.4±3.4 MPa,and the areal capacitance of the area reached 548.7 mF/cm^(2) at a current density of 0.25 mA/cm^(2).The supercapacitor device assembled by the film had an areal capacitance of 200 mF/cm^(2) at a current density of 0.25 mA/cm^(2),and could maintain an excellent rate performance of 85%after 6000 cycles at a current density of 5 mA/cm^(2).

关 键 词：还原氧化石墨烯 二氧化锰 丝素蛋白 浸渍法 柔性电极 超级电容器 

分 类 号：TB383.2[一般工业技术—材料科学与工程]