Porous network of samarium sulfide thin films for supercapacitive application |
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| Affiliation: | 1. Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur 416004, Maharashtra, India;2. Mechanical Engineering Department, Sinhgad Institute of Technology, Lonavala 410401, Maharashtra, India;3. Yashavantrao Chavan Institute of Science, Satara–415001, Maharashtra, India;1. School of Chemistry, College of Science, University of Tehran, Tehran, Iran;2. Department of Chemistry, Tabriz Branch, Islamic Azad University, Tabriz, Iran;3. Department of Chemistry, Faculty of Science, Alzahra University, Tehran, Iran;1. Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran;2. Chemical Injuries Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran;3. Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, Iran;4. Center of Excellence in Electrochemistry, University of Tehran, Tehran, Iran;5. Department of Chemistry, Payame Noor University, Tehran, Iran;6. Department of Medicinal Chemistry, School of Pharmacy–International Campus, University of Medical Sciences, Tehran, Iran;7. Biosensor Research Centre, Endocrinology & Metabolism Molecular and Cellular Research Institute, Tehran University of Medical Sciences, Tehran, Iran;8. Institute of Experimental Physics, TU Bergakademie, Freiberg, Germany |
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| Abstract: | In the present letter, a novel aqueous chemical method is employed to prepare thin film of Sm2S3 material containing porous network of interconnected nanoparticles for supercapacitive application. The orthorhombic phase formation of Sm2S3 film is concluded from X–ray diffraction study. The chemical states of samarium and sulfur are determined using X–ray photoelectron spectroscopy study. The pseudocapacitive behavior of Sm2S3 showed a maximum specific capacitance of 248 F g−1 in 1.5 M LiClO4 electrolyte prepared in propylene carbonate electrolyte. The nature of charge and discharge curves confirmed pseudocapacitive behavior of film electrode. The highest power and energy densities of 15.6 kWh kg−1 and 54.6 Wh kg−1, respectively are obtained. An electrochemical stability of 94% is retained after 1500 cycles. |
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| Keywords: | Samarium sulfide Thin films XPS Pseudocapacitive Charge–discharge |
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