Fabrication and electrochemical performance of nickel ferrite nanoparticles as anode material in lithium ion batteries |
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| Institution: | 1. Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, Henan 461000, PR China;2. Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong, PR China;1. School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212000, China;2. School of Material Science and Engineering, Yancheng Institute of Technology, Yancheng, 224051, China;1. Guang dong Engineering Technology Research Center of Efficient Green Energy and Environmental Protection Materials, Guangzhou 510006, China;2. Guang dong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, China;3. Department of Electrical Engineering, The Hong Kong Polytechnic University, Hunghom, Kowloon 999077, Hong Kong;1. Chemistry Department, Faculty of Science, Benha University, Benha, Egypt;2. Physics Department, Faculty of Science, Benha University, Benha, Egypt;1. Centre for Nanotechnology Research, VIT University, Vellore 632014, India;2. Department of Environmental and Biological Sciences, University of Eastern Finland, P.O. Box 1627, FI-70211 Kuopio, Finland;3. CASEST, School of Physics, University of Hyderabad, Gachibowli, Hyderabad 500046, India;4. Newton Alumnus Researcher – The Royal Society London, Thin Film Magnetism Group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK;5. Climate Change Technology Research Division, Korea Institute of Energy Research, Yuseong-gu, Daejeon 305-343, South Korea |
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| Abstract: | Nano-sized nickel ferrite (NiFe2O4) was prepared by hydrothermal method at low temperature. The crystalline phase, morphology and specific surface area (BET) of the resultant samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and nitrogen physical adsorption, respectively. The particle sizes of the resulting NiFe2O4 samples were in the range of 5–15 nm. The electrochemical performance of NiFe2O4 nanoparticles as the anodic material in lithium ion batteries was tested. It was found that the first discharge capacity of the anode made from NiFe2O4 nanoparticles could reach a very high value of 1314 mAh g−1, while the discharge capacity decreased to 790.8 mAh g−1 and 709.0 mAh g−1 at a current density of 0.2 mA cm−2 after 2 and 3 cycles, respectively. The BET surface area is up to 111.4 m2 g−1. The reaction mechanism between lithium and nickel ferrite was also discussed based on the results of cycle voltammetry (CV) experiments. |
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