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 248Fg−1 in 1.5M 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 15.6kWhkg−1 and 54.6Whkg−1, respectively are obtained. An electrochemical stability of 94% is retained after 1500 cycles.
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