期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 499, 期 -, 页码 145-150出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2017.03.104
关键词
Metal-organic frameworks; Porous CoFe2O4 nanocubes; Sodium ion batteries
资金
- Provincial Natural Science Foundation of Anhui [1508085ME104]
- Important Project of Anhui Provincial Education Department [KJ2015A250]
- Research Team of Anhui Provincial Education Department [2016SCXPTTD]
- Key Project of National Natural Science Foundation of China [61231003]
Recently sodium ion batteries (SIBs) as a new energy storage system have attracted enormous interests. Unfortunately, the development of high-performance electrode materials for SIBs is restricted owing to the large volume change during sodium insertion and extraction. In this work, porous CoFe2O4 nanocubes (PCFO-NCs) were prepared simply by annealing metal-organic frameworks and used as anode materials for SIBs. The PCFO-NCs exhibit a high initial Coulombic efficiency of 68.8% and a maximum reversible capacity of 360 mAh g(-1) after 50 cycles at the current density of 50 mA g(-1), as well as good rate capability and excellent cycling stability at high current density. The excellent electrochemical performance can be attributed the short diffusion distance of sodium ion due to the good interfacial contact between electrode and electrolyte, and the buffering of volume change during charge/discharge processes by the porous structure. (C) 2017 Elsevier Inc. All rights reserved.
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