Carbon Nanotubes/Cellulose Composite Paper as Electrodes for Supercapacitor

• Main Authors: CHEN Wei, SUN Xiao-gang, CAI Man-yuan, NIE Yan-yan, QIU Zhi-wen, CHEN Long
• Format: Article
• Language: zho
• Published: Journal of Materials Engineering 2018-10-01
• Series: Journal of Materials Engineering
• Subjects: whisker carbon nanotubes; carbon nanotubes; supercapacitor; paper fiber
• Online Access: http://jme.biam.ac.cn/CN/Y2018/V46/I10/113

Whisker multiwalled carbon nanotubes (WMWCNTs) and multiwalled carbon nanotubes (MWCNTs) were synthesized <i>via</i> chemical vapor deposition (CVD), and were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and Raman spectroscopy. Paper fibers were used as matrix material, WMWCNTs and MWCNTs as functional material. Paper fibers were mixed with dispersed WMWCNTs and MWCNTs by speed-cutting procedure in water. Then the composite papers were fabricated by vacuum filtration method. The electrochemical performance of the supercapacitor was tested by cyclic voltammetry, galvanostatic charge/discharge. The testing results indicate the supercapacitor has a maximum capacitance of 120F/g at a scan rate of 1mV/s and has a specific capacitance of 51.5F/g at 0.4A/g. The maximum energy density and power density reach 63.7Wh/kg and 3.99kW/kg respectively in the current range of 0.4-1.4A/g.