Preparation of Graphene/N-doped Carbon Nanohybrids and Their Application in Supercapacitors

Title:Preparation of Graphene/N-doped Carbon Nanohybrids and Their Application in Supercapacitors

Volume: 14 Issue: 5

Author(s): Biao Xu, Kundrakudi Annamalai, Tianlu Chen, Yueqiu Chen and Yousheng Tao*

Affiliation:

• College of Materials Science and Engineering, Sichuan University, Chengdu 610065,China

Keywords: Graphene, nitrogen doping, nanohybrids, micropore, mesopore, supercapacitor, electrode materials.

Abstract: Background: Nanocarbon hybrids have been a topic of interest in recent years because of their important role in energy storage and conversion device fabrication.

Objective: To get low-cost graphene/N-doped carbon composites (G-NC) for supercapacitor applications.

Method: G-NC samples were prepared with a two-step hydrothermal method and characterized with field emission scanning electron microscopy, 77K nitrogen adsorption, and X-ray photoelectron spectroscopy. The electrochemical performance of samples was investigated with cyclic voltammetry and charge-discharge measurements in threeelectrode configurations.

Results: Samples showed a sheet-type morphology and nanoporous structure. The nanohybrids had a specific surface area of 350 m²g^-1, delivered maximum specific capacitance of 103 F g^-1 at 0.5A g^-1 in 6 M KOH with good cycle stability.

Conclusion: Low-cost G-NC nanohybrids with good electrochemical performance are promising for supercapacitor applications.

Cite this article as:

Xu Biao, Annamalai Kundrakudi, Chen Tianlu, Chen Yueqiu and Tao Yousheng*, Preparation of Graphene/N-doped Carbon Nanohybrids and Their Application in Supercapacitors, Recent Innovations in Chemical Engineering 2021; 14 (5) . https://dx.doi.org/10.2174/2405520414666210531113732