A low temperature synthesis of nanocrystalline spinel NiFe2O4 and its electrochemical performance as anode of lithium-ion batteries |
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| Affiliation: | 1. Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, Taizhou University, Taizhou 318000, PR China;2. Environmental Engineering Program, University of Northern British Columbia, Prince GeorgeBritish Columbia, CanadaV2N 4Z9;3. School of Environmental Science and Public Health, Wenzhou Medical UniversityWenzhou325035, PR China;1. Departamento de Engenharia Metalúrgica e de Materiais, Centro de Tecnologia, Campus do Pici, Universidade Federal do Ceará – UFC, 60455-760 Fortaleza, CE, Brazil;2. Departamento de Física, Universidade Federal do Ceará – UFC, Campus do Pici, 60440-970 Fortaleza, CE, Brazil;3. Instituto de Física, Universidade de São Paulo – USP, 05315-970 São Paulo, SP, Brazil;1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education and School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, PR China;2. Hefei National Laboratory for Physical Science at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China;1. Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, Tongji University, Shanghai, 200092, China;2. School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, 510006, PR China;3. College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, China;4. Integrated Composites Lab (ICL), Department of Chemical & Biomolecular Engineering University of Tennessee, Knoxville, TN, 37966, USA;5. Department of Physics and Astronomy, Louisiana State University, Baton Rouge, LA, 70803, USA;6. Department of Chemical & Biomolecular Engineering and Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT, 06269, USA;7. State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Hebei, 066004, China |
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| Abstract: | ![]()
Nanocrystalline spinel NiFe2O4 was synthesized by a novel low temperature route. The crystal structure, composition and morphology of the as-prepared powder were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). The average diameter of the particles prepared at 700 °C is about 30 nm. The electrochemical reaction mechanism and charge–discharge mechanism of the nanocrystalline NiFe2O4 were proposed based on thermogravimetric analysis (TGA) and cyclic voltammogram study. The charge–discharge tests indicated that the sample calcined at 700 °C shows the highest initial discharge capacity (1400 mAh g−1) attributed to the nanometer size and the better crystallinity of the powder. A discharge capacity stabilizes at about 600 mAh g−1 after 10 cycles. The columbic efficiency is improved. The synthesis method is relatively low cost and convenient for large-scale production. |
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