Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61176
Title: Zn substitution NiFe2O4 nanoparticles with enhanced conductivity as high-performances electrodes for lithium ion batteries
Authors: Mao, J
Hou, X
Huang, F
Shen, K
Lam, KH 
Ru, Q
Hu, S
Keywords: Anode materials
Density functional calculations
Electrochemical properties
Lithium ion battery
Issue Date: 2016
Publisher: Elsevier
Source: Journal of alloys and compounds, 2016, v. 676, p. 265-274 How to cite?
Journal: Journal of alloys and compounds 
Abstract: Zn2+ ion substituted nickel ferrite nanomaterials with the chemical formula Ni1-xZnxFe2O4 for x = 0, 0.3, 0.5, 0.7 and 1 have been synthesized by a facile green-chemical hydrothermal method as anode materials in lithium ion battery. The morphology and structure of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The physical and electrochemical properties were tested by electrochemical system. Furthermore, the energetic and electronic properties of the samples were investigated by density functional calculations. The results suggest that Zn substitution can affect the conduction performance of the zinc - nickel ferrite. Meanwhile, electrochemical results show that an enhancement in the capacity with increasing Zn concentration is observed especially for x = 0.3 which exhibit high discharge capacity of 1416 mAh g-1at the end of 100th cycle. Moreover, the theoretical research method with high yield synthesis strategy described in the present work holds promise for the general fabrication of other metallic elements substitution in complex transition metal oxides for high power LIBs.
URI: http://hdl.handle.net/10397/61176
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2016.03.153
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