Enhanced electrochemical performance of three-dimensional graphene/carbon nanotube composite for supercapacitor application
Journal article, 2020

In this work, we developed a facile route to synthesize three-dimensional graphene/carbon nanotube (3DG/CNT) hybrids as electrodes for binder-free electrical double layer capacitor (EDLC) by using chemical vapor deposition (CVD) method. The 3DG/CNT composites have been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, cyclic voltammetry (CV), galvanostatic charge-discharge (GCD) and electrochemical impedance spectroscopy (EIS). It was found that the 3DG/CNT with interconnected architecture exhibit improved capacitive characteristic and electrical conductivity compared to that of pure 3DG. The 3DG/CNT composites have high specific capacitance of 197.2 F/g and excellent capacity retention rate of 93% after 1000 cycles. The experiment results show that the as-synthesized 3DG/CNT hold great potential as candidate as electrode for binder-free EDLC. © 2019 Elsevier B.V.

Graphene

Carbon nanotubes

Supercapacitor

CVD

Electrode

Author

Ziyu Niu

Shanghai University

Yong Zhang

Shanghai University

Yan Zhang

Shanghai University

Xiuzhen Lu

Shanghai University

Johan Liu

Chalmers, Microtechnology and Nanoscience (MC2), Electronics Material and Systems Laboratory

Shanghai University

Journal of Alloys and Compounds

0925-8388 (ISSN)

Vol. 820 153114

Subject Categories

Inorganic Chemistry

Materials Chemistry

Composite Science and Engineering

DOI

10.1016/j.jallcom.2019.153114

More information

Latest update

2/6/2020 9