In this work, we report the synthesis and electrode applications of iron-carbon nanohybrid particles prepared by carbonization of a nanocomposite of FeOOH nanoneedles and melamine-formaldehyde resin. The chemical composition and microstructure of the material have been characterized using ICP-AES, FT-IR, XRD, FESEM, TEM and XPS. The supercapacitor properties of the MF-Fe-C are studied in detail. A thorough comparison of the supercapacitor performances of MF-Fe-C and bare MF-C has been carried out through detailed electrochemical characterisations employing both two and three-electrode techniques. The nanohybrid showed an enhanced energy density of 127.75 WhKg−1, specific capacitance of ∼408 F g−1 at 1 mVs−1 scan rate, and excellent cyclic stability even after 1000 charge-discharge cycles, making it an intriguing material for high energy density supercapacitor devices.
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DJ acknowledges the financial support from the Science and Engineering Research Board (RJN-112/2012) and Board of Research in Nuclear Sciences (37(2)/14/21/2015/BRNS). DV acknowledges the DST Inspire Doctoral Fellowship (IF150027). CSR would like to thank DST (Government of India) for the Ramanujan fellowship (Grant No. SR/S2/RJN-21/2012). This work was supported by the DST-SERB Fast-Track Young Scientist (Grant No. SB/FTP/PS-065/2013), UGC-UKIERI Thematic Awards (Grant No. UGC-2013-14/005), and BRNS-DAE (Grant No. 37(3)/14/48/2014-BRNS/1502). Also, part of this work is supported by the Indo-US Science and Technology Forum (IUSSTF) through a joint INDO-US centre grant and Ministry of Human Resources Development (MHRD), India, through a center of excellence grant. The authors acknowledge the electron microscopy facility at Centre for Materials Characterization in CSIR – National Chemical Laboratory.
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Ratha, S., Vernekar, D., Sivaneri, K. et al. Iron-carbon nanohybrid particles as environmentally benign electrode for supercapacitor. J Solid State Electrochem 21, 1665–1674 (2017). https://doi.org/10.1007/s10008-017-3537-z
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