Facile synthesis of polyaniline/TiO2/graphene oxide composite for high performance supercapacitors |
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| Affiliation: | 1. Nanomaterials and System Lab, Faculty of Applied Energy System, Science and Engineering College, Jeju National University, Jeju 690-756, Republic of Korea;2. Nanomaterials and System Lab, Department of Mechatronics Engineering, Engineering College, Jeju National University, Jeju 690-756, Republic of Korea;1. Department of Organic and Nano Engineering, Hanyang University, Seoul, 04763, South Korea;2. Institute of Nano Science and Technology, Hanyang University, Seoul, 04763, South Korea;3. Department of Materials Science and Engineering, Hanyang University, Seoul, 04763, South Korea;4. Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 03760, South Korea;1. Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials(IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China;2. Yancheng Additive Manufacturing Technology Co., Ltd, China;3. Xi’an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi’an 710119, China;4. OSU Institute for Magnetic and Electronic Polymers, USA |
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| Abstract: | The polyaniline/TiO2/graphene oxide (PANI/TiO2/GO) composite, as a novel supercapacitor material, is synthesized by in situ hydrolyzation of tetrabutyl titanate and polymerization of aniline monomer in the presence of graphene oxide. The morphology, composition and structure of the composites as-obtained are characterized by SEM, TEM, XRD and TGA. The electrochemical property and impedance of the composites are studied by cyclic voltammetry and Nyquist plot, respectively. The results show that the introduction of the GO and TiO2 enhanced the electrode conductivity and stability, and then improved the supercapacitive behavior of PANI/TiO2/GO composite. Significantly, the electrochemical measurement results show that the PANI/TiO2/GO composite has a high specific capacitance (1020 F g−1 at 2 mV s−1, 430 F g−1 at 1 A g−1) and long cycle life (over 1000 times). |
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