TY - JOUR
T1 - Electrochemical performance of plate-like zinc cobaltite electrode material for supercapacitor applications
AU - Ramachandran, Tholkappiyan
AU - Hamed, Fathalla
N1 - Funding Information:
This research was supported by the UAEU Program for Advanced Research under grant number G00001647 , United Arab Emirates University , Al Ain, United Arab Emirates.
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/10
Y1 - 2018/10
N2 - The electrochemical performance of zinc cobaltite–based nanomaterial depends on its shape and morphology. Here we report on the electrochemical performance of plate-like zinc cobaltite nanocrystalline material synthesized via a facile hydrothermal method. The synthesized material was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller analysis. It was found to be a single-phase zinc cobaltite nanocrystalline material with a cubic spinel crystal structure. The electrochemical performance of the synthesized plate-like zinc cobaltite nanocrystalline material was evaluated by cyclic voltammetry, cyclic chronopotentiometry and electrochemical impedance spectroscopy. The plate-like zinc cobaltite nanocrystalline material displayed a maximum coulombic efficiency of 78% and a maximum specific capacitance of 812 F/g, and it retained 88% of its capacitance after 5100 cycles. Such electrochemical performance may qualify the plate-like zinc cobaltite nanocrystalline material as a potential electroactive material in supercapacitors.
AB - The electrochemical performance of zinc cobaltite–based nanomaterial depends on its shape and morphology. Here we report on the electrochemical performance of plate-like zinc cobaltite nanocrystalline material synthesized via a facile hydrothermal method. The synthesized material was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and Brunauer-Emmett-Teller analysis. It was found to be a single-phase zinc cobaltite nanocrystalline material with a cubic spinel crystal structure. The electrochemical performance of the synthesized plate-like zinc cobaltite nanocrystalline material was evaluated by cyclic voltammetry, cyclic chronopotentiometry and electrochemical impedance spectroscopy. The plate-like zinc cobaltite nanocrystalline material displayed a maximum coulombic efficiency of 78% and a maximum specific capacitance of 812 F/g, and it retained 88% of its capacitance after 5100 cycles. Such electrochemical performance may qualify the plate-like zinc cobaltite nanocrystalline material as a potential electroactive material in supercapacitors.
KW - Electrochemical performance
KW - Hydrothermal synthesis
KW - Plate-like zinc cobaltite
KW - Specific capacitance
KW - Supercapacitor
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U2 - 10.1016/j.jpcs.2018.04.044
DO - 10.1016/j.jpcs.2018.04.044
M3 - Article
AN - SCOPUS:85047420502
SN - 0022-3697
VL - 121
SP - 93
EP - 101
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
ER -