Facile synthesis of one-dimensional mesoporous cobalt ferrite nanofibers for high lithium storage anode material
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One-dimension mesoporous cobalt ferrite (CoFe2O4) nanofibers were prepared by a facile single-nozzle electrospinning technique followed by calcination. The lithium storage properties show that the CoFe2O4 nanofibers obtained at 800 °C deliver an initial discharge capacity of 1888 mAh g−1 and a reversible capacity as high as 942 mAh g−1 after 80 cycles, much higher than those of the samples obtained at 600 °C (1193 and 701 mAh g−1, respectively). The CoFe2O4 nanofibers obtained at 800 °C also demonstrate an excellent rate capability. The improved lithium storage properties of CoFe2O4 nanofibers obtained at 800 °C can be attributed to the unique mesoporous and fibrous structures, as well as the high crystallinity, which provide an easy Li+ diffusion path promote electron transfer, meanwhile preventing volume expansion/contraction during discharge/charge processes.
KeywordsElectrospinning One-dimensional Nanofibers Lithium storage properties Lithium-ion batteries
This work was financially supported by the China Postdoctoral Science Foundation (2017M610296), the National Natural Science Foundation of China (21201083), the Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices (HLOM161002 and HLOM161005), the Undergraduate Innovation Training Program of Jiangnan University of China Grant, Cooperative Innovation Fund-Prospective Project of Jiangsu Province (BY2014023-29 and BY2014023-23), the National First-Class Discipline Program of Light Industry Technology and Engineering (LITE2018-21), and the Fundamental Research Funds for the Central Universities (JUSRP51621A and JUSRP51505).
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