Preparation and Capacitive Performance of Graphene/Nanocellulose Composite Conductive Paper
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/cm2,the area specific ca-pacitance of the rGO/GS/CNF electrode was 227.8 mF/cm2,and the capacitance retention rate was 82.1％after 1 000 charge-discharge cy-cles,with exhibiting large energy density(62.0 μWh/cm2),and power density(2 080 μW/cm2),which indicated good application potential in the field of flexible supercapacitors.
万方数据
维普
