石墨烯/纳米纤维素复合导电纸的制备及电容性能研究  

Preparation and Capacitive Performance of Graphene/Nanocellulose Composite Conductive Paper

作　　者：张长军[1,4] 高健 李冠辉[2] 杨辉 ZHANG Changjun;GAO Jian;LI Guanhui;YANG Hui(Hebei Institute of Mechanical and Electrical Technology,Xingtai,Hebei Province,054000;School of Electronic and Information Engineering,South China University of Technology,Guangzhou,Guangdong Province,510640;Institute of Semiconductors,Guangdong Academy of Sciences,Guangzhou,Guangdong Province,510650;Hebei Province Electromechanical Equipment Intelligent Perception and Advanced Control Technology Innovation Center,Xingtai,Hebei Province,054000)

机构地区：[1]河北机电职业技术学院,河北邢台054000 [2]华南理工大学电子与信息学院,广东广州510640 [3]广东省科学院半导体研究所,广东广州510650 [4]河北省机电装备智能感知与先进控制技术创新中心,河北邢台054000

出　　处：《中国造纸》2024年第8期106-113,共8页China Pulp & Paper

基　　金：河北省高等学校科学技术研究项目(Z2019098);河北机电职业技术学院教科研规划项目自然重点项目(ZD22003)。

摘　　要：本研究选用球形碳(GS)作为插层剂,还原氧化石墨烯(rGO)作为导电基质,纤维素纳米纤丝(CNF)作为绿色柔性基底,制备了具有三明治结构的石墨烯/纳米纤维素复合导电纸(rGO/GS/CNF),并探讨了GS和CNF的加入对rGO/GS/CNF的影响。结果表明,与纯石墨烯导电纸相比,CNF和GS的存在改变了复合纸的微观结构,使rGO/GS/CNF具有更好的力学强度(53.7 MPa);GS的嵌入增加了rGO的片层距离,有效改善了rGO/GS/CNF的倍率性能和电容性能。在0.5 mA/cm^(2)的电流密度下,rGO/GS/CNF电极的面积比电容为227.8 mF/cm^(2),经过1000次充放电循环测试后,电容保留率为82.1%,且具有较大的能量密度(62.0μWh/cm2)和功率密度(2080μW/cm2),在柔性超级电容器领域具有良好的应用潜力。In this study,taking carbon sphere(GS)as the intercalating agent,reduced graphene oxide(rGO)as conductive matrix,and cellulose nanofibril(CNF)as green and flexible substrate,the graphene/cellulose nanofiber composite conductive paper(rGO/GS/CNF)with sandwich structure was prepared and the effects of adding GS and CNF on rGO/GS/CNF were explored.The results showed that com⁃pared with pure graphene conductive paper,the presence of CNF and GS could change the microstructure of the composite paper,giving rGO/GS/CNF better mechanical strength(53.7 MPa),and the embedding of GS could also increase the interlayer distance of rGO,effec⁃tively improving the multiplicity and capacitive performance of rGO/GS/CNF.At the current density of 0.5 mA/cm^(2),the area specific ca⁃pacitance of the rGO/GS/CNF electrode was 227.8 mF/cm^(2),and the capacitance retention rate was 82.1%after 1000 charge-discharge cy⁃cles,with exhibiting large energy density(62.0μWh/cm2),and power density(2080μW/cm2),which indicated good application potential in the field of flexible supercapacitors.

关 键 词：石墨烯 纳米纤维素 柔性电极 超级电容器 

分 类 号：TS761.2[轻工技术与工程—制浆造纸工程] TM53[电气工程—电器]