Abstract
α-Fe2O3 thin films were deposited through spray pyrolysis technique with different precursor solution concentrations i.e. (0.05, 0.1 and 0.2 M) of iron nitrate at optimized 400 °C temperature. The effect of precursor concentrations on material properties such as structural, morphological, contact angle and electrochemical supercapacitive were explored. Structural analysis, using X-ray diffraction confirmed the hexagonal phase of the films polycrystalline in nature. The Scanning electron microscopy showed large area grannual morphology. Contact angle analysis of α-Fe2O3 thin films illustrated hydrophobic in nature. The supercapacitive performance of Fe2O3 thin film electrodes were explored in 1M NaOH aqueous electrolyte. The specific capacitance was decreased from 277 F g−1 to 196 F g−1 as the concentrations of precursor solution varied from 0.05 to 0.2 M.
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Acknowledgements
Author (PDM) is thankful to UGC, WRO Pune for the financial support through the Scheme No. 47-1255/2009. One of author Prof. V.B. Patil is thankful to the CSIR (India), for financial support through Scheme No. 03 (1319)/14/EMR-II. Authors also would like to thank DAE-BRNS for the financial support through Scheme No. 34/14/21/2015-BRNS and RUSA Maharashtra for the financial support through Scheme No. RUSA/R&I/2016/267.
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More, P.D., Jadhav, P.R., Ghanwat, A.A. et al. Spray synthesized hydrophobic α-Fe2O3 thin film electrodes for supercapacitor application. J Mater Sci: Mater Electron 28, 17839–17848 (2017). https://doi.org/10.1007/s10854-017-7725-5
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DOI: https://doi.org/10.1007/s10854-017-7725-5