Journal
CERAMICS INTERNATIONAL
Volume 42, Issue 15, Pages 16666-16670Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.07.099
Keywords
NiFe2O4/RGO nanocomposites; Sodium ion batteries; Anode materials
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Funding
- National Natural Science Foundation of China [21006075]
- Henan Provincial Science and Technology Foundation [152102210274, 15A530008]
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NiFe2O4/reduced graphene oxide (NFO/RGO) nanocomposites were prepared by a facile one-step hydrothermal method and used as anode for sodium ion batteries (SIBs). The crystal structures, morphologies and electrochemical properties of as-prepared samples were evaluated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge tests. The results show that NFO/RGO-20 (20 wt%) delivers the highest reversible capacity of similar to 450 mA h g(-1) at 50 mA g(-1) after 50 cycles with good cycling stability. The excellent sodium storage performance of NFO/RGO should be attributed to the synergistic effect between NFO and RGO to form conductive network structure, which offers the increased specific surface area, the facilitated electron transfer ability and the buffering of volume expansion. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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