Redox behavior of nanohybrid material with defined morphology: Vanadium oxide nanotubes intercalated with polyaniline |
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| Affiliation: | 1. Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, 13560-970 São Carlos (SP), Brazil;2. Institut des Matériaux Jean Rouxel, Université de Nantes, BP 32229, 44322 Nantes, France;3. Instituto de Química, Universidade de São Paulo, CP 26077, 05513-970 São Paulo (SP), Brazil;1. Guangdong Engineering Technology Research Center of Efficient Green Energy and Environmental Protection Materials, Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China;2. Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong, China;3. School of Chemical and Biomolecular Engineering, The University of Sydney, Australia;1. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;2. State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control, Hubei Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan University of Science and Technology, 947 Heping Road, Wuhan 430081, China;3. Collaborative Innovation Center of Strategic Vanadium Resources Utilization, Wuhan University of Science and Technology, Wuhan 430081, China;4. Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource, Wuhan University of Science and Technology, Wuhan 430081, China;5. Jianghan University, Wuhan 430056, Hubei, China;1. School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China;2. Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, United States;3. School of Chemistry and Chemical Engineering, State Key Laboratory of Hollow-fiber Membrane Materials and Membrane Processes, Tiangong University, Tianjin 300387, China |
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| Abstract: | Vanadium oxide/polyaniline nanotubes were produced by cationic exchange between hexadecylamine and polyaniline after the synthesis of vanadium oxide nanotubes by sol–gel method followed by hydrothermal treatment. The local structure of this hybrid material was studied by high-resolution transmission electron microscopy, infrared and Raman spectroscopy and small angle X-ray diffraction technique. The results show that polyaniline is intercalated in the interlamellar space of the vanadium oxide nanotube forming a hybrid material with defined morphology. Electrochemical impedance spectroscopy experiments have shown that the apparent diffusion coefficient for nanotubes with template was approximately 1 × 10?9 cm2 s?1. Nanotubes with polyaniline presented an apparent diffusion coefficient at least one order in magnitude higher than the parent material “with template”, comparable with other vanadium oxide described in the literature, revealing a promising material for utilization as cathode for ion-Li batteries. |
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