Direct growth of Fe3O4-MoO2 hybrid nanofilm anode with enhanced electrochemical performance in neutral aqueous electrolyte |
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| Authors: | Ruizhi Li Xin B Yimeng Wang Wenhua Zuo Chong Wang Yuanyuan Li and Jinping Liu |
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| Institution: | a School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China;b Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, Hubei 430079, China;b Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, Hubei 430080, China;b Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, Hubei 430081, China;b Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, Hubei 430082, China;c School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China;a School of Chemistry, Chemical Engineering and Life Science, and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, Hubei 430070, China |
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| Abstract: | To enhance the electrochemical energy storage performance of supercapacitors(SCs), the current researches are general directed towards the cathode materials. However, the anode materials are relatively less studied. In the present work, Fe_3O_4-MoO_2(FO-MO) hybrid nano thin film directly grown on Ti substrate is investigated, which is used as high-performance anode material for SCs in Li_2SO_4 electrolyte with the comparison to pristine Fe_3O_4 nanorod array. The areal capacitance of FO-MO hybrid electrode was initially found to be 65.0 m F cm~(-2)at 2 m Vs~(-1)and continuously increased to 260.0% after 50 cycles of activation. The capacitance values were considerably comparable or higher than many reported thinfilm iron oxide-based anodes in neutral electrolyte. With the protection of MoO_2 shell, the FO-MO electrode developed in this study also exhibited excellent cyclic stability(increased to 230.8% after 1000cycles). This work presents a promising way to improve the electrochemical performance of iron oxidebased anodes for SCs. |
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| Keywords: | Magnetite MoO2 Supercapacitor Binder-free anode Hybridization |
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