Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 676, Issue -, Pages 265-274Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.03.153
Keywords
Anode materials; Electrochemical properties; Density functional calculations; Lithium ion battery
Categories
Funding
- National Science Foundation of China (NSFC) [51201066, 51171065]
- College students' innovative entrepreneurial training program of South China Normal University [2015058]
- Scientific Research Foundation of Graduate School of South China Normal University [2015lkxm33]
- Hong Kong Polytechnic University and Strategic Plan [4-ZZDC, 1-ZVCG]
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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(-1) at 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. (C) 2016 Elsevier B.V. All rights reserved.
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