Facile hydrothermal synthesis of NiO/rGO nanocomposite electrodes for supercapacitor and nonenzymatic glucose biosensing application.

Autor: Pore, O. C., Fulari, A. V., Parale, V. G., Park, H. H., Shejwal, R. V., Fulari, V. J., Lohar, G. M.
Zdroj: Journal of Porous Materials; Dec2022, Vol. 29 Issue 6, p1991-2001, 11p
Abstrakt: The NiO/rGO composites are synthesized via a hydrothermal method followed by annealing treatment with varying graphene oxide concentrations. The structural and morphological characterizations of synthesized samples are done by XRD, FT-IR, Raman, and FE-SEM. The electrochemical supercapacitor performance of prepared electrodes is characterized by CV, GCD, and EIS studies. The NiO/rGO composite achieved the highest specific capacitance of 727.1 F g−1 at 1 mA cm−2 current density and showed good cyclic stability of about 80.4% over 9000 cycles. In a nonenzymatic glucose sensing study, the sensing properties are analyzed by CV and chronoamperometry. The NiO/rGO composite showed the highest glucose sensitivity of 442.4 μA mM−1 cm−2 with correlation coefficient R2 = 0.9964 and LOD of 7.42 μM. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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