Preparation of nitrogen-doped carbon using graphene Quantum dots-chitosan as the precursor and its supercapacitive behaviors

Wensheng Tan; Renjun Fu; Hong Ji; Yong Kong; Yueguo Xu; Yong Qin

doi:10.1016/j.ijbiomac.2018.02.014

Preparation of nitrogen-doped carbon using graphene Quantum dots-chitosan as the precursor and its supercapacitive behaviors

Int J Biol Macromol. 2018 Jun:112:561-566. doi: 10.1016/j.ijbiomac.2018.02.014. Epub 2018 Feb 3.

Authors

Wensheng Tan¹, Renjun Fu², Hong Ji³, Yong Kong⁴, Yueguo Xu², Yong Qin³

Affiliations

¹ Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China; Changzhou Key Laboratory of Large Plastic Parts Intelligence Manufacturing, Changzhou College of Information Technology, Changzhou 213164, China.
² Changshu Changel Chemical Co., LTD., Changshu 215522, China.
³ Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China.
⁴ Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China. Electronic address: yzkongyong@126.com.

PMID: 29408393
DOI: 10.1016/j.ijbiomac.2018.02.014

Abstract

Nitrogen-doped carbon (N-C) is pyrolytically prepared by using the nanocomposites of graphene Quantum dots (GQDs) and chitosan (CS) as the precursor. Due to the existence of GQDs nanofiller, the three-dimensional (3D) interconnected frameworks of CS are well preserved after the pyrolysis treatment; meanwhile, CS in the nanocomposites functions as nitrogen source for the N-C. The obtained N-C exhibits a considerable specific capacitance (545Fg^-1 at 1Ag^-1), high rate capability and excellent cyclic stability (88.9% capacitance retention after 5000cycles at 10Ag^-1) when it is used as the electrode materials in supercapacitors. The well-preserved 3D frameworks and N-doping are believed to be responsible for the excellent supercapacitive behaviors of the N-C.

Keywords: 3D frameworks; Chitosan; Graphene Quantum dots; Nitrogen-doped carbon; Supercapacitor electrode.

MeSH terms

Carbon / chemistry*
Chitosan / chemistry*
Electrochemistry
Graphite / chemistry*
Nitrogen / chemistry*
Photoelectron Spectroscopy
Quantum Dots / chemistry*
Spectroscopy, Fourier Transform Infrared
Thermogravimetry
X-Ray Diffraction

Substances

Carbon
Graphite
Chitosan
Nitrogen