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Hollow Fe3O4/C spheres as superior lithium storage materials

Authors Zhang, Qiumei View this author's profile
Shi, Zhicong
Deng, Yuanfu
Zheng, Jun
Liu, Guichang
Chen, Guohua View this author's profile
Issue Date 2012
Source Journal of power sources , v. 197, 2012, p. 305-309
Summary Unique hollow Fe3O4/C spheres are prepared by a simple one-pot solvothermal method, with spinel structure and 750 nm in diameter identified by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) techniques. The hollow Fe 3O4/C spheres exhibit excellent cycling and rate performance as anode material for lithium ion batteries, delivering reversible specific capacities of 984 mAh g-1 even after 70 cycles at 0.2 C, 620 mAh g-1 at 2 C, and 460 mAh g-1 at 5 C, respectively. Lithium insertion mechanisms are also proposed in terms of the ex situ XRD analysis of the electrodes after discharged and charged to certain voltages together with cyclic voltammetry (CV) and voltage profile. © 2011 Elsevier B.V. All rights reserved.
ISSN 0378-7753
Language English
Format Article
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