Synthesis of intertwined Zn0.5Mn0.5Fe2O4@CNT composites as a superior anode material for Li-ion batteries

Wang, X., Hou, X., Mao, J., Gao, Y., Ru, Q., Hu, S. and Lam, K.-h. (2016) Synthesis of intertwined Zn0.5Mn0.5Fe2O4@CNT composites as a superior anode material for Li-ion batteries. Journal of Materials Science: Materials in Electronics, 51(12), pp. 5843-5856. (doi: 10.1007/s10853-016-9886-7)

Abstract

Nanocrystalline ZnFe2O4, Zn0.5Mn0.5Fe2O4, and Zn0.5Mn0.5Fe2O4@CNT composites have been successfully prepared by a facile and high-yield co-precipitation method. All the samples as the anode materials were characterized by X-ray diffraction, thermogravimetry, and electrochemical measurements. It has been found that the appropriate Mn doping and CNTs intertwining actively affect the formation of uniform morphology and improve the cycling stability and rate capability. The Zn0.5Mn0.5Fe2O4@CNT composites exhibit excellent electrochemical performance as the anode material, with enhanced reversible capacity (1374.8 mAh g−1 after 100 cycles at the current density of 100 mA g−1) and good rate capability (933.5 mAh g−1 at 500 mA g−1, 809.9 mAh g−1 at 1000 mA g−1, 634.2 mAh g−1 at 1500 mA g−1). We also present the crystal structure and Li-ion insertion mechanism for the above materials.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Lam, Dr Koko
• Authors: Wang, X., Hou, X., Mao, J., Gao, Y., Ru, Q., Hu, S., and Lam, K.-h.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Journal of Materials Science: Materials in Electronics
• Publisher: Springer
• ISSN: 0957-4522
• ISSN (Online): 1573-4803