access icon free Preparation of graphene nanowalls on nickel foam as supercapacitor electrodes

Graphene nanowalls (GNWs) were deposited on the surface of the copper foil, nickel foam and glass using the plasma-enhanced chemical vapour deposition (13.56 MHz) method. The etching effect of hydrogen on the morphology of the GNWs was investigated by varying the CH4/H2 ratio during the graphene growth. Supercapacitor electrodes made of GNWs on nickel foam were tested with cyclic voltammetry and galvanostatic charge/discharge methods, showing premium electrical double-layer performance and cyclic stability.

Inspec keywords: graphene devices; surface morphology; electrochemistry; electrochemical electrodes; nanofabrication; voltammetry (chemical analysis); supercapacitors; plasma CVD; graphene; nanocomposites; etching

Other keywords: C; Ni; glass; SiO2; Cu; frequency 13.56 MHz; cyclic stability; electrical double-layer performance; graphene nanowalls; supercapacitor electrodes; cyclic voltammetry; plasma-enhanced chemical vapour deposition; galvanostatic charge-discharge methods; copper foil; etching; nickel foam; surface morphology

Subjects: Chemical vapour deposition; Electrochemical analytical methods; Other methods of nanofabrication; Chemical vapour deposition; Composite materials (engineering materials science); Storage in electrical energy; Fullerene, nanotube and related devices; Plasma applications in manufacturing and materials processing; Structure of graphene and graphene-related materials; Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials; Capacitors; Surface treatment and degradation of composites; Preparation of graphene and graphene-related materials, intercalation compounds, and diamond; Fullerenes, carbon nanotubes, and related materials (engineering materials science); Solid surface structure; Electrochemistry and electrophoresis; Electrochemical conversion and storage; Low-dimensional structures: growth, structure and nonelectronic properties

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http://iet.metastore.ingenta.com/content/journals/10.1049/mnl.2017.0922
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