Synthesis, Characterization, and Electrochemical Analysis of Graphene Oxide Prepared by Modified Hummer’s Method | ||||
Sohag Journal of Sciences | ||||
Volume 9, Issue 2, June 2024, Page 140-144 PDF (518.05 K) | ||||
Document Type: Regular Articles | ||||
DOI: 10.21608/sjsci.2024.240208.1133 | ||||
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Authors | ||||
Muhammad Abd El-Monem ![]() ![]() ![]() ![]() | ||||
1Basic Sciences Department, Faculty of Engineering, Sinai University, Egypt | ||||
2Chemistry Department, Faculty of Science, Sohag University, Sohag, 82524, Egypt | ||||
3Physics Department, Electronics and Nano Devices Lab, Faculty of Science, South Valley University, Qena 83523, Egypt | ||||
4Physics Department, Faculty of Science, Sohag University, Sohag 82524, Egypt | ||||
Abstract | ||||
This work aims to explore the structural, morphological, and electrochemical features of graphene oxide. The study investigates graphene oxide's electrochemical behavior in supercapacitor applications. The graphene oxide was synthesized using the modified Hummer's method. XRD, Raman spectroscopy, and (HR-TEM) were used to investigate structural and morphological properties. The results confirmed the formation of the typical hexagonal structure of the graphene oxides. Raman spectrum showed two distinct G (primary mode of graphene) and D (defect or disorder mode) Raman modes at 1592 cm-1 and 1349 cm-1, respectively, in addition to D+D' and 2D modes. The electrochemical measurement revealed that the GO electrode has a specific capacitance of 38.33 F/g at a current density of 5 A/g in a 1 M KOH electrolyte with a very low charge transfer resistance of 0.97Ω. These findings suggested that this straightforward method can be used to create various graphene-derived electrodes for upgrading current supercapacitors. | ||||
Keywords | ||||
Graphene oxide; Graphene; supercapacitor; Hummer’s method; electrode material | ||||
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