Supercapacitors based on electrochemically deposited polypyrrole nanobricks |
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| Authors: | D.P. Dubal S.V. Patil W.B. Kim C.D. Lokhande |
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| Affiliation: | 1. Thin Film Physics Laboratory, Department of Physics, Shivaji University, Kolhapur, 416004 (M.S.), India;2. Department of Materials Science and Engineering, Gwangju Institute of Science and Technology, 261 Cheomdan-gwagiro, Buk-gu, Gwangju 500-712, Republic of Korea;1. Chemical Engineering College, Inner Mongolia University of Technology, Hohhot, 010051, People''s Republic of China;2. Inner Mongolia Key Laboratory of Industrial Catalysis, Hohhot, 010051, People''s Republic of China;1. Department of Applied Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi’an Jiaotong University, Xi’an, 710049, China;2. State Key Laboratory of Electrical Insulation and Power Equipments, Xi’an Jiaotong University, Xi’an, 710049, China;1. State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Gansu, Lanzhou 730000, China;2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;3. College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China;1. State Key Laboratory of Applied Organic Chemistry and Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, PR China;2. Center of Xuyi Attapulgite Applied Technology, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, PR China;1. Hacettepe University, Faculty of Science, Department of Chemistry, Ankara, Turkey;2. Dumlup?nar University, Faculty of Science and Arts, Department of Chemistry, Kütahya, Turkey;1. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;2. North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3, Matsubara, Aomori 030-0813, Japan;3. Shanxi Institute of Applied Chemistry, Taiyuan 030024, China |
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| Abstract: | Simple and inexpensive electrodeposition method for the synthesis of polypyrrole (PPy) nanobricks has been reported. These PPy nanobricks are characterized with X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Polypyrrole nanobricks exhibit amorphous nature as confirmed from XRD study. Based on SEM and TEM analysis, the formation of the spherical bunches of PPy nanobricks with average size of about 20–30 nm are inferred. The electrochemical performance of PPy electrode was evaluated by cyclic voltammetry (CV) and galvanostatic charge–discharge techniques. A high specific capacitance of 476 F·g?1 was obtained within the potential range of ? 0.4 to 0.6 V in 0.5 M H2SO4 solution. Moreover, PPy electrode exhibited high discharge/charge efficiency of 89%. |
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