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Enhanced electrochemical performance of bio-derived nickel oxide nanoparticles using Zephyranthes rosea flower extract and investigation on charge storage mechanism
A NIVEDHITHA BHARATHI G MAHESHWARAN V KOUSALYA DEVI M KRISHNA KUMAR S SUDHAHAR
Volume 45 Published: 25 September 2022 Article ID 0188
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https://www.ias.ac.in/article/fulltext/boms/045/0188 -
Keywords
Biomaterials ;Zephyranthes rosea ;energy storage and conversion ;cyclic voltammetry ;NiO NPs. -
Abstract
Phytosynthesis plays a crucial role for synthesizing nickel oxide nanoparticles (NiO NPs) in a harmless, nontoxic and cost-effective way using Zephyranthes rosea (Z. rosea) flower extract as reducing agent. The cyclic voltammetry(CV) study shows the excelled enhanced specific capacitance of 548.25 F g$^{–1}$ at 10 mV s$^{–1}$. Trasatti and Dunn’s methods demonstrates the charge storage mechanisms with total, outer and inner capacitances of 2207.50, 48.08 and 2159.41 F g$^{–1}$, respectively. Galvanostatic charge–discharge profile makes evident of prolonged discharge time by providing the high specific capacitance of 1095.75 F g$^{–1}$ at 0.5 A g$^{–1}$. The fabricated electrode delivers outstanding capacitance retention of 96.1% for 2000 cycles.
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Author Affiliations
A NIVEDHITHA BHARATHI1 G MAHESHWARAN1 V KOUSALYA DEVI1 M KRISHNA KUMAR2 S SUDHAHAR1
- Department of Physics, Alagappa University, Karaikudi 630003, India
- Department of Physics, Kalasalingam University, Krishnankoil 626126, India
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Dates
- Published
- 25 September 2022
- Manuscript received
- 4 March 2022
- Accepted
- 2 June 2022
- Final version published online
- 25 September 2022
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Bulletin of Materials Science
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