Hydrothermal synthesis of Fe2O3 nanoparticles and their electrochemical application
- Authors
- Vivekanandan, J.; Prasath, G. Vijaya; Selvamurugan, M.; Usha, K. S.; Ravi, G.
- Issue Date
- Jan-2024
- Publisher
- SPRINGER
- Citation
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, v.35, no.3
- Journal Title
- JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
- Volume
- 35
- Number
- 3
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/90489
- DOI
- 10.1007/s10854-024-11971-4
- ISSN
- 0957-4522
1573-482X
- Abstract
- In the present investigation, we report on Iron oxide (alpha-Fe2O3) nanoparticles synthesized by simple hydrothermal method with different reaction times as 6 h (H1) and 8 h (H2) for supercapacitor application. The significance of varying the reaction time on structural, morphological, and vibrational properties of alpha-Fe2O3 was explored. XRD, FTIR, and Raman study affirmed that the products consist of only the rhombohedral phase of alpha-Fe2O3 nanoparticles. SEM image infers that with a change in reaction time the surface morphology of alpha-Fe2O3 changed from spherical to octahedra. The size of nanoparticles reduced with reaction time. XPS spectra again confirmed the growth of alpha-Fe2O3 nanoparticles. The electrochemical characteristics of the fabricated H2 electrode exhibited excellent performance in a 2 M KOH electrolyte solution. The specific capacitance (Cs) achieved from CV and GCD curves were 299.4 F g(-1), and 351.3 F g(-)1. The R-ct acquired via electrochemical impedance (EIS) reduced from 11.2 to 9.18 Omega demonstrating the rise in the conductivity of the prepared electrodes. Remarkable capacitance retention of 92% was accomplished, even after 1000 cycles, thus making alpha-Fe2O3 nanoparticles a most promising electrode for the fabrication of energy storage devices.
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