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


Background: Nanocarbon hybrids have become an increasing interest in recent years because of their important role in energy storage and conversion device fabrication.

Objective: The objective of this study is the preparation of 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 three-electrode configurations.

Results: Samples showed a sheet-type morphology and nanoporous structures. The nanohybrids had 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.

Journal Title: Recent Innovations in Chemical Engineering

Price: $95

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