Silver nanoparticles decorated on a three-dimensional graphene scaffold for electrochemical applications

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• 作者：A. Bello ; M. Fabiane ; D. Dodoo-Arhin ; K.I. Ozoemena ; N. Manyala
• 关键词：Graphene foam ; CVD ; Electron beam evaporation ; Silver nanoparticles ; Electrochemical capacitor
• 刊名：Journal of Physics and Chemistry of Solids
• 出版年：January, 2014
• 年：2014
• 卷：75
• 期：1
• 页码：109-114
• 全文大小：1333 K

文摘

Silver metal nanoparticles were decorated by electron beam evaporation on graphene foam (GF) grown by chemical vapour deposition. X-ray diffraction, Raman spectroscopy, scanning and transmission electron microscopy, and atomic force microscopy were used to investigate the structure and morphology of the graphene foam/silver nanoparticles (GF/Ag). Both samples were tested as electrodes for supercapacitors. The GF/Ag exhibited a significantly higher capacitive performance, including a specific capacitance value of (~110 Fg^鈭?) and excellent cyclability in a three-electrode electrochemical cell. These results demonstrate that graphene foam could be an excellent platform for metal particles for investigating improved electrochemical performance.