Structure-Properties Relationship in Iron Oxide-Reduced Graphene Oxide Nanostructures for Li-Ion Batteries
authors Yu, SH; Conte, DE; Baek, S; Lee, DC; Park, SK; Lee, KJ; Piao, Y; Sung, YE; Pinna, N
nationality International
journal ADVANCED FUNCTIONAL MATERIALS
author keywords graphene; iron oxide; nanostructures; Li-ion batteries; microwave-assisted synthesis
keywords X-RAY-DIFFRACTION; PERFORMANCE ANODE MATERIAL; ABSORPTION FINE-STRUCTURE; LITHIUM STORAGE; NONAQUEOUS SYNTHESIS; REVERSIBLE CAPACITY; POWDER DIFFRACTION; FE3O4-GRAPHENE NANOCOMPOSITES; ELECTROCHEMICAL PERFORMANCE; SIZE DISTRIBUTION
abstract Non-aqueous sol-gel routes involving the reaction of metal oxide precursors in organic solvents (e.g., benzyl alcohol) at moderate temperature and pressure, offer advantages such as high purity, high reproducibility and the ability to control the crystal growth without the need of using additional ligands. In this paper, a study carried out on a series of iron oxide/reduced graphene oxide composites is presented to elucidate a structure-properties relationship leading to an improved electrochemical performance of such composites. Moreover, it is demonstrated that the easy production of the composites in a variety of temperature and composition ranges, allows a fine control over the final particles size, density and distribution. The materials obtained are remarkable in terms of the particle's size homogeneity and dispersion onto the reduced graphene oxide surface. Moreover, the synthesis method used to obtain the graphene oxide clearly affects the performances of the final composites through the control of the restacking of the reduced graphene oxide sheets. It is shown that a homogeneous and less defective reduced graphene oxide enables good electrochemical performances even at high current densities (over 500 mAh/g delivered at current densities as high as 1600 mA/g). The electrochemical properties of improved samples reach the best compromise between specific capacity, rate capability and cycle stability reported so far.
publisher WILEY-V C H VERLAG GMBH
issn 1616-301X
year published 2013
volume 23
issue 35
beginning page 4293
ending page 4305
digital object identifier (doi) 10.1002/adfm.201300190
web of science category Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter
subject category Chemistry; Science & Technology - Other Topics; Materials Science; Physics
unique article identifier WOS:000327492800005
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journal analysis (jcr 2017):
journal impact factor 13.325
5 year journal impact factor 13.274
category normalized journal impact factor percentile 94.154
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