Publication: Characterization and electrochemical properties of CuO–Cu2O@rGO nanocomposite synthesized by a seed-mediated growth process
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Issued Date
2022
Resource Type
Language
eng
File Type
application/pdf
ISSN
223697
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Journal of Physics and Chemistry of Solids. Vol 163, No. (2022)
Suggested Citation
Wongjom P., Tuichai W., Karaphun A., Phrompet C., Daengsakul S., Pimanpang S., Moontragoon P., Srepusharawoot P., Sriwong C., Ruttanapun C. Characterization and electrochemical properties of CuO–Cu2O@rGO nanocomposite synthesized by a seed-mediated growth process. Journal of Physics and Chemistry of Solids. Vol 163, No. (2022). doi:10.1016/j.jpcs.2021.110540 Retrieved from: https://hdl.handle.net/20.500.14740/10123
Abstract
A CuO–Cu2O@rGO nanocomposite (CuO–Cu2O@rGO NCP) has been successfully prepared through a seed-mediated growth process. X-ray diffraction (XRD) analysis results indicated a monoclinic phase of CuO–Cu2O@rGO NCP with space group C2/c. Transmission electron microscopy (TEM) revealed agglomeration of the CuO and Cu2O nanoparticles in the rGO sheet matrix. The interaction of CuO–Cu2O@rGO NPC resulted from the aggregation and overlapping of CuO and Cu2O nanoparticles owing to the influence of a seed-mediated growth process. The electrochemical properties of the CuO–Cu2O@rGO NPC electrode indicate the storage of energy at the surface through a pseudo-capacitive mechanism. The specific capacitance at a current density of 0.5 A g−1 and the average percentage capacity retention after 1000 cycles of a CuO–Cu2O@rGO electrode at a current density of 10 A g−1 were evaluated as 125.54 F g−1 and 89.87 ± 3.30%, respectively. In the CuO–Cu2O@rGO electrode, the incorporated rGO affects the electrical conductivity and the synergistic interactions in charge–discharge processes. Interestingly, these results showed that the material was synthesized through a seed-mediated growth process and reveal the key factors that determine the combination and volume expansion of the reversible redox transition between Cu+ and Cu2+ during charge–discharge processes. © 2021 Elsevier Ltd
Subject(s)
Agglomeration
Copper oxides
Electric discharges
Electrochemical electrodes
Graphene
High resolution transmission electron microscopy
Nanocomposites
Nanoparticles
X ray diffraction analysis
CuO–cu2O@reduced graphene oxide nanocomposite (CuO–cu2O@reduced graphene oxide NCP)
Graphene oxide nanocomposites
Copper oxides
Electric discharges
Electrochemical electrodes
Graphene
High resolution transmission electron microscopy
Nanocomposites
Nanoparticles
X ray diffraction analysis
CuO–cu2O@reduced graphene oxide nanocomposite (CuO–cu2O@reduced graphene oxide NCP)
Graphene oxide nanocomposites