Journal
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
Volume 882, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2021.114992
Keywords
Optimization; ANOVA; Electrodeposition; NiO; Binder-free electrode; Energy storage
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Funding
- Malaysia-Japan International Institute of Technology (MJIIT) of Universiti Teknologi Malaysia
- MJIIT JICA Fund [UTM] [4B593]
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In this study, NiO was electrodeposited on a 3D graphene electrode to produce a nanocomposite with enhanced electrochemical properties. The optimal electrodeposition conditions were determined through statistical analysis, and the specific capacity of G-NiO was validated through experimental results. The structural and morphological properties of the composite were analyzed using XRD and FESEM studies, confirming its excellent electrochemical performance for energy storage applications.
In this study, NiO was electrodeposited on a 3D graphene electrode to produce a nanocomposite with enhanced electrochemical properties. The electrodeposition process parameters such as electrolyte concentration, deposition time, and deposition potential were statistically optimised using response surface methodology. The statistical analysis showed that the optimal electrodeposition conditions to be 0.3 M, 10 min, and-1.2 V for electrolyte concentration, deposition time, and deposition potential, respectively. Furthermore, the predicted model and experimental results for the specific capacity of G-NiO were determined to be 240.91 C/g and 240.58 C/g at 3 mV/s. The results show that the electrochemical deposition technique can be employed as a fast and reliable synthesis route to develop graphene-based metal oxide nanocomposites. The structural and morphological properties were determined by XRD and FESEM studies. The electrochemical measurements revealed the excellent electrochemical performance of 3D graphene NiO composite (G-NiO) for energy storage applications.
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