Abstract
Polyaniline–few-layer molybdenum disulfide nanocomposite (PANI–MoS2) has been synthesized by in situ polymerization of aniline over MoS2 using HCl as the dopant. X-ray crystallographic studies show the characteristic peaks of few-layered MoS2 in the PANI matrix. The changes in Raman and UV–Vis spectra have proved that there are definite interactions between PANI and few-layer MoS2.PANI–MoS2 nanocomposite as an electrode material for supercapacitor exhibits a maximum specific capacitance of 687 Fg−1 at a scan rate of 5 mVs−1 using cyclic voltammetry (CV) and a Csp of 612 Fg−1 at a current density of 0.2 Ag−1 using chronopotentiometry (CP). Further, the material also exhibits a high energy density of 128 Wh kg−1with a maximum power density of 9.8 kW kg−1 and a tremendous cyclic stability with 93% capacitance retention after 2000 cycles. These superior electrochemical results over bare PANI and MoS2 showed the PANI–MoS2 nanocomposites to be a capable electrode material for energy storage systems.
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Acknowledgements
The authors are pleased to express their gratitude to the college management, for providing laboratory facilities to carry out this work. The author MSR is grateful to VGST, GOK for providing funding for research. The authors are grateful to DST-FIST for providing financial support under the research grant scheme (Project No SR/FST/ETT-378/2014).
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Raghu, M.S., Kumar, K.Y., Rao, S. et al. Fabrication of polyaniline–few-layer MoS2 nanocomposite for high energy density supercapacitors. Polym. Bull. 75, 4359–4375 (2018). https://doi.org/10.1007/s00289-017-2267-9
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DOI: https://doi.org/10.1007/s00289-017-2267-9