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Photo-Enhanced Supercapacitive Behaviour of Photoactive Cu2FeSnS4 (CFTS) Nanoparticles

Publication Type : Journal Article

Thematic Areas : Nanosciences and Molecular Medicine

Publisher : Journal of Materials Science: Materials in Electronics

Source : Journal of Materials Science: Materials in Electronics, Volume 31, Issue 1, p.752-761 (2020)

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Campus : Kochi

School : Center for Nanosciences, School of Engineering

Center : Amrita Center for Nanosciences and Molecular Medicine Move

Department : Nanosciences, Nanosciences and Molecular Medicine, Sciences

Year : 2020

Abstract : We present here the synthesis of three different types of Cu2FeSnS4 (CFTS) nanoparticles with the help of solvothermal route. Different chain length of ethylene glycol (EG) (PEG-200, PEG-400 and PEG-600) were used as solvent in hydrothermal process which resulted in stannite phase CFTS nanoparticles which was confirmed by XRD analysis and other characterizations including Raman, SEM, TEM and XPS. Photoresponse of these as-prepared CFTS nanoparticles were studied and among them PEG-400 sample exhibited higher photoresponse and further electrochemical studies such as, cyclic voltammetry (CV), galvanostatic charge/discharge (GCD) and electrochemical impedance spectroscopy (EIS) were done. The as-prepared CFTS nanoparticles not only exhibit a significant enhancement in the electrochemical activity but also in the photo-enhanced specific capacitance under light irradiation. The CFTS nanoparticles were sulfurized at 500 °C to study the effect of sulfurization on photoresponse and photo-supercapacitive behaviour. Moreover, the sample synthesized with PEG-400 demonstrates an outstanding photoresponse among the three samples. The sulfurized CFTS exhibited less specific capacitance compared to the as-prepared sample probably due to the formation of some secondary phases. This study opens up for the direct utilization of this light harvesting CFTS nanoparticles for solar cell and exhibited high photon induced specific capacitance for supercapacitor application.

Cite this Research Publication : S. P. Madhusudanan, Suresh Kumar, M., Y., and Dr. Dhamodaran Santhanagopalan, “Photo-Enhanced Supercapacitive Behaviour of Photoactive Cu2FeSnS4 (CFTS) Nanoparticles”, Journal of Materials Science: Materials in Electronics, vol. 31, no. 1, pp. 752-761, 2020.

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