Synthesis and supercapacitive performance of g -C3 N4 /C-DOTs composite
WEI Ying
GUO Jing-yang
ZHANG Wen-bo
ZHANG Qing-guo
Abstract：Graphite carbon nitride(g-C3N4)is a kind of 2D semiconductor materials with unique electronic structure, large specific surface area, low-cost, good chemical stability and thermal stability ,which has a great application prospect in supercapacitors .In this paper , a two -dimensional layered graphite -like C3 N4/C -DOTs composite was successfully synthesized via a facile sintering process of urea and C -DOTs′ethanol solu-tion.The structure and morphology of the composite is folded layer with uniform 6 nm C-DOTs particles on its surface with large surface area, which characterized by TEM, SEM and XRD.As an electrode material of super-capacitor,the curves of the CV show the ideal capacitive rectangle characteristics at different speeds , and when the sweep speed increases to 400 mV/s, the curve still maintains rectangle , which indicate the material has small internal resistance and excellent magnification performance .When current density of 2 A/g, specific ca-pacity can reach 216.4 F/g, charge and discharge efficiency is 94.5%.Compared with the pure g-C3 N4 , g-C3 N4/C-DOTs composite material with more specific storage performance and higher charge -discharge effi-ciency is an ideal supercapacitor electrode materials .
Keywords：g-C3 N4carbon dotstwo-dimensional layered compositesupercapacitive performance
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 224-228 )