▎ 摘　　要

Graphene is a carbon material with an outstanding combination of beneficial properties, of interest for various practical applications in electronic, optoelectronic, and energy storage devices. In this paper, we prepare a 3D graphene network by using nickel foam as template in a chemical vapour deposition (CVD) process with methane as the carbon source. The obtained graphene network on nickel foam does not present notable defects as shown from scanning electron microscopy and Raman spectroscopy. Raman spectroscopy is used to evaluate the influence of the deposition time on the thickness of graphene layers as well as to evaluate their structural properties.