Synthesising of ZnO nanopetals for supercapacitor applications

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Key Points

To synthesize zinc oxide nanopetals using spray pyrolysis and evaluate their electrochemical performance for supercapacitor applications.
Synthesized zinc oxide (ZnO) nanopowder via the spray pyrolysis method.
Characterized structural and morphological properties using X-ray diffraction (XRD) and scanning electron microscopy (SEM).
Evaluated electrochemical energy storage performance using cyclic voltammetry and chronopotentiometry in a 2M potassium hydroxide (KOH) electrolyte.
XRD analysis revealed a crystallite size of 19 nm, and SEM imaging confirmed a petal-like nanostructure.
The ZnO electrode delivered a specific capacitance of 365 F/g at a scan rate of 5 mV/s in 2M KOH.
The material retained strong stability with a 22% capacitance loss after 1,200 charge-discharge cycles.

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Experimental study demonstrates high capacitance in spray-pyrolyzed zinc oxide nanopetals, indicating potential for energy storage devices.

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Purushothaman et al. (2011) studied this question.

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