1 Simple synthesis of Fe3O4@Fe3S4 Nanocomposites coated with polyindole-polythiophene for high-performance supercapacitor https://jourcc.com/index.php/jourcc/article/view/jcc514 10.52547.jcc.5.1.4 1 To prevent a major energy crisis in the near future, it is necessary to assemble efficient electrochemical energy storage devices such as supercapacitors. Herein, a Fe3O4@Fe3S4 nanocomposites coated with polyindole-polythiophene on nickel foam (NF) has been prepared by following a low facile, multistep method. In terms of structural and electrochemical performance, the nanocomposites have been investigated. The electrochemical properties of as fabricated Fe3O4@Fe3S4@PIn-PTh are studied in 2M KOH. A specific capacitance of 100.83 F g-1 at a current density of 2 A g-1. The results of the synthesized sample in comparison with Fe3O4 show that using sulfide metal and polymer component improve the electrochemical performance. These characteristics of Fe3O4@Fe3S4@PIn-PTh as the active material illustrate a sutiable performance as a cathode material for electrochemical energy storage. 20 24 AliAkbar Asgharinezhad Niroo Research Institute (NRI) Iran aasgharinezhad@nri.ac.ir Ehsan Niknam Niroo Research Institute (NRI) Iran info@jourcc.com Afsanehsadat Larimi Niroo Research Institute (NRI) Iran info@jourcc.com Supercapacitor Nanoshepres Fe3O4 Fe3S4 Active Material Synthesis Article4.pdf [1] A. Muzaffar, M.B. Ahamed, K. Deshmukh, J. Thirumalai, A review on recent advances in hybrid supercapacitors: Design, fabrication and applications, Renewable and Sustainable Energy Reviews 101 (2019) 123-145 .##[2] E. Niknam, H. Naffakh-Moosavy, S.E. Moosavifard, M.G. Afshar, Multishelled bimetal V-doped Co3O4 hollow spheres derived from metal organic framework for high performance supercapacitors, Journal of Energy Storage 44 (2021) 103508 .##[3] U. Gulzar, S. Goriparti, E. Miele, T. Li, G. Maidecchi, A. Toma, F. De Angelis, C. Capiglia, R.P. Zaccaria, Next-generation textiles: from embedded supercapacitors to lithium ion batteries, Journal of Materials Chemistry A 4(43) (2016) 16771-16800 .##[4] E. Niknam, H. Naffakh-Moosavy, M.G. Afshar, Electrochemical performance of Nickel foam electrode in Potassium Hydroxide and Sodium Sulfate electrolytes for supercapacitor applications, Journal of Composites and Compounds 4(12) (2022) 149-152 .##[5] M.K. Aslam, T.S. AlGarni, M.S. Javed, S.S.A. Shah, S. Hussain, M. Xu, 2D MXene Materials for Sodium Ion Batteries: A review on Energy Storage, Journal of Energy Storage 37 (2021) 102478 .##[6] F. Ozel, H.S. Kılıc, H. Coskun, I. Deveci, A. Sarılmaz, A. Balıkcıoglu, Y. Gundogdu, A. Aljabour, A. Ozen, S.Y. Gezgin, A. Houimi, A. Yar, M. Kus, M. Ersoz, A general review on the thiospinels and their energy applications, Materials Today Energy 21 (2021) 100822 .##[7] N. Choudhary, C. Li, J. Moore, N. Nagaiah, L. Zhai, Y. Jung, J. Thomas, Asymmetric Supercapacitor Electrodes and Devices, Advanced Materials 29(21) (2017) 1605336 .##[8] Z.S. Iro, C. Subramani, S.J.I.J.E.S. Dash, A brief review on electrode materials for supercapacitor, 11(12) (2016) 10628-10643 .##[9] S.Z. Golkhatmi, A. Sedghi, H.N. Miankushki, M. Khalaj, Structural properties and supercapacitive performance evaluation of the nickel oxide/graphene/polypyrrole hybrid ternary nanocomposite in aqueous and organic electrolytes, Energy 214 (2021) 118950 .##[10] H. Jiang, Y. Li, Y. Deng, W. Zhang, P. Dong, J. Zhang, In-situ-foaming synthesis of cheese-like Fe 3o4/Ti3C2Tx electrode material with both high energy and power density for Al/Zn-ion supercapacitors, Journal of Materials Research and Technology 23 (2023) 3547-3556 .##[11] L. Qu, L. Yang, Y. Ren, X. Ren, D. Fan, K. Xu, H. Wang, Y. Li, H. Ju, Q. Wei, A signal-off electrochemical sensing platform based on Fe3S4 -Pd and pineal mesoporous bioactive glass for procalcitonin detection, Sensors and Actuators B: Chemical 320 (2020) 128324 .##[12] H. Mudila, P. Prasher, M. Kumar, A. Kumar, M.G.H. Zaidi, A. Kumar, Critical analysis of polyindole and its composites in supercapacitor application, Materials for Renewable and Sustainable Energy 8(2) (2019) 9-19 .##[13] E. Niknam, H. Naffakh-Moosavy, S.E. Moosavifard, M. Ghahraman Afshar, Amorphous V-doped Co3S4 yolk-shell hollow spheres derived from metal-organic framework for high-performance asymmetric supercapacitors, Journal of Alloys and Compounds 895 (2022) 162720 .##[14] M. Karuppasamy, D. Muthu, Y. Haldorai, R.T. Rajendra Kumar, Solvothermal synthesis of Fe3S4@graphene composite electrode materials for energy storage, Carbon Letters 30(6) (2020) 667-673 .##[15] W. Meng, W. Chen, L. Zhao, Y. Huang, M. Zhu, Y. Huang, Y. Fu, F. Geng, J. Yu, X. Chen, C. Zhi, Porous Fe3o4/carbon composite electrode material prepared from metal-organic framework template and effect of temperature on its capacitance, Nano Energy 8 (2014) 133-140 .##[16] Y. Miao, X. Zhang, J. Zhan, Y. Sui, J. Qi, F. Wei, Q. Meng, Y. He, Y. Ren, Z. Zhan, Z. Sun, Hierarchical NiS@CoS with Controllable Core-Shell Structure by Two-Step Strategy for Supercapacitor Electrodes, Advanced Materials Interfaces 7(3) (2020) 1901618 .##[17] Y. Zhu, X. Yun, S. Wu, Z. Li, Y. Zhou, W. Zhong, C. Li, J. Li, M. Zhou, Mesoporous Fe3S4 microparticles as a novel anode material for rechargeable alkaline aqueous batteries, Ionics 26(1) (2020) 105-113 .##[18] H. Talebi, A. Olad, R. Nosrati, Fe3o4/PANI nanocomposite core-shell structure in epoxy resin matrix for the application as electromagnetic waves absorber, Progress in Organic Coatings 163 (2022) 106665 .##[19] C.-R. Lin, O.S. Ivanova, I.S. Edelman, Y.V. Knyazev, S.M. Zharkov, D.A. Petrov, A.E. Sokolov, E.S. Svetlitsky, D.A. Velikanov, L.A. Solovyov, Y.-Z. Chen, Y.-T. Tseng, Carbon Double Coated Fe3o4@C@C Nanoparticles: Morphology Features, Magnetic Properties, Dye Adsorption, Nanomaterials 12(3) (2022) 376 .##[20] X. Du, C. Wang, M. Chen, Y. Jiao, J. Wang, Electrochemical Performances of Nanoparticle Fe3o4/Activated Carbon Supercapacitor Using KOH Electrolyte Solution, Journal of Physical Chemistry C 113(6) (2009) 2643-2646 .##[21] M. Aghazadeh, I. Karimzadeh, M.R. Ganjali, Electrochemical evaluation of the performance of cathodically grown ultra-fine magnetite nanoparticles as electrode material for supercapacitor applications, Journal of Materials Science: Materials in Electronics 28(18) (2017) 13532-13539 .##[22] M. Mazloum-Ardakani, F. Sabaghian, M. Yavari, A. Ebady, N. Sahraie, Enhance the performance of iron oxide nanoparticles in supercapacitor applications through internal contact of α-Fe2O3@CeO2 core-shell, Journal of Alloys and Compounds 819 (2020) 152949 .##[23] Q. Liu, Z. Chen, R. Qin, C. Xu, J. Hou, Hierarchical mulberry-like Fe3S4/ Co9S8 nanoparticles as highly reversible anode for lithium-ion batteries, Electrochimica Acta 304 (2019) 405-414 .##[24] J. Sun, P. Zan, X. Yang, L. Ye, L. Zhao, Room-temperature synthesis of Fe3o4/ Fe-carbon nanocomposites with Fe-carbon double conductive network as supercapacitor, Electrochimica Acta 215 (2016) 483-491 .##[25] B. Hu, Y. Wang, X. Shang, K. Xu, J. Yang, M. Huang, J. Liu, Structure-tunable Mn3O4-Fe 3o4@C hybrids for high-performance supercapacitor, Journal of Colloid and Interface Science 581 (2021) 66-75 .##[26] A. Shokry, M. Karim, M. Khalil, S. Ebrahim, J. El Nady, Supercapacitor based on polymeric binary composite of polythiophene and single-walled carbon nanotubes, Scientific Reports 12(11278) (2022) 1-13 .##[27] S. Mozaffari, J. Behdani, S.M.B. Ghorashi, Synthesis of polyindole nanoparticles and its copolymers via emulsion polymerization for the application as counter electrode for dye-sensitized solar cells, Polymer Bulletin 79(8) (2022) 6777-6796 .##[28] A. Shokry, M. Karim, M. Khalil, S. Ebrahim, J. El Nady, Supercapacitor based on polymeric binary composite of polythiophene and single-walled carbon nanotubes %J Sci. Rep, 12(11278) (2022) 1–13 .##[29] J. Li, J. Zheng, C. Wu, H. Zhang, T. Jin, F. Wang, Q. Li, E. Shangguan, Facile synthesis of Fe3S4 microspheres as advanced anode materials for alkaline iron-based rechargeable batteries, Journal of Alloys and Compounds 874 (2021) 159873 .##[30] X. Wang, D. Jiang, C. Jing, X. Liu, K. Li, M. Yu, S. Qi, Y. Zhang, Biotemplate Synthesis of Fe3o4/Polyaniline for Supercapacitor, Journal of Energy Storage 30 (2020) 101554 .##[31] C. Wu, J. Zheng, J. Li, T. Jin, F. Wang, Q. Li, M. Chen, J. Qi, S. Gao, E. Shangguan, Fe3S4@reduced graphene oxide composites as novel anode materials for high performance alkaline secondary batteries, Journal of Alloys and Compounds 895 (2022) 162593 .##[32] W. Bao, C. Chen, W. Chen, X. Ding, Z. Si, Controllable synthesis of Ni-dotted Fe 3S4 with its superior wideband electromagnetic absorbing performance, Journal of Materials Science: Materials in Electronics 31(15) (2020) 12775-12782 .##[33] R.B. Choudhary, S. Ansari, B. Purty, Robust electrochemical performance of polypyrrole (PPy) and polyindole (PIn) based hybrid electrode materials for supercapacitor application: A review, Journal of Energy Storage 29 (2020) 101302 .##[34] M. Moradi, F. Hasanvandian, M. Ghahraman Afshar, A. Larimi, F. Khorasheh, E. Niknam, S. Rahman Setayesh, Incorporation of Fe in mixed CoCu-alkoxide hollow sphere for enhancing the electrochemical water oxidation performance, Materials Today Chemistry 22 (2021) 100586 .##[35] Y. Wang, Y. Lei, J. Li, L. Gu, H. Yuan, D. Xiao, Synthesis of 3D-Nanonet Hollow Structured Co3O4 for High Capacity Supercapacitor, ACS Applied Materials and, Interfaces 6(9) (2014) 6739-6747 .##[36] Y.-W. Li, W.-J. Zhang, J. Li, H.-Y. Ma, H.-M. Du, D.-C. Li, S.-N. Wan J.-S. Zhao, J.-M. Dou, L. Xu, Fe-MOF-Derived Efficient ORR/OER Bifunctional Electrocatalyst for Rechargeable Zinc–Air Batteries, ACS Applied Materials and, Interfaces 12(40) (2020) 44710-44719 .##[37] L. Wang, J. Yu, X. Dong, X. Li, Y. Xie, S. Chen, P. Li, H. Hou, Y. Song, Three-Dimensional Macroporous Carbon/Fe3o4-Doped Porous Carbon Nanorods for High-Performance Supercapacitor, ACS Sustainable Chemistry and, Engineering 4(3) (2016) 1531-1537.