Abstract
Supercapacitors with high power density and excellent cycle life are considered to be a promising energy storage system for electric vehicle application. Because of low cost and high abundant, the preparation of iron oxides-based supercapacitors has become significant. Here, we reported the preparation of magnetite supercapacitors by using a facile one-step solvothermal method, where Mn2+ has been used as the doping element to modify the electrochemical properties of Fe3O4. The simply prepared supercapacitor showed a much higher electrochemical capacitance in contrast to reported Fe3O4-based electrochemical capacitors. The electrochemical capacitance at this supercapacitor can be as high as 268.4 F g−1 when the Mn2+ doped reached 1.5 mmol. There was not significant decrease in the capacitance after recycling 600 at 2 A g−1 in KOH aqueous solution. The excellent properties in the supercapacitor share a promising prospect with the development of a next generation of high- performance energy storage devices.
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Acknowledgements
This study was performed with supports from the National Natural Science Foundation of China (Grant Nos. 21403091, and 51473070), Jiangsu Province for the support under the innovation/entrepreneurship program (Surencaiban [2015]26), the Natural Science Foundation of Jiangsu Province (Grant No. BK20130486 and SBK2014041874) and the Jiangsu University (Grant No. 12JDG093).
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Yang, X., Kan, J., Zhang, F. et al. Facile Fabrication of Mn2+ Doped Magnetite Microspheres as Efficient Electrode Material for Supercapacitors. J Inorg Organomet Polym 27, 542–551 (2017). https://doi.org/10.1007/s10904-017-0496-x
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DOI: https://doi.org/10.1007/s10904-017-0496-x