Monodispersed hollow carbon/Fe3O4 composite microspheres for high performance anode materials in lithium-ion batteries

Title
Monodispersed hollow carbon/Fe3O4 composite microspheres for high performance anode materials in lithium-ion batteries
Other Titles
Fe3O4 composite microspheres for high performance anode materials in lithium-ion batteries
Author
선양국
Keywords
Hollow structure; Carbon; Magnetite; Carbon/magnetite composite; Anode materials; Lithium ion battery
Issue Date
2013-12
Publisher
Elsevier
Citation
Journal of Power Sources, Volume 244, Pages 538-543
Abstract
Monodispersed carbon/Fe3O4 composite microspheres with hollow structures are prepared by heat treating monodispersed hollow poly(St/AN/DVB)/Fe3O4 microspheres synthesized through seeded polymerization and a wet chemical method. Monodispersed hollow carbon/Fe3O4 composite microspheres are characterized by optical microscopy, scanning electron microscopy, focused-ion beam scanning electron microscopy and transmission electron microscopy, X-ray diffraction. The electrodes containing the monodispersed hollow carbon/Fe3O4 composite microspheres exhibit an excellent cycling and rate capabilities with efficiency of 99% even after 100 cycles at high current rate. These results are because hollow structure and Fe3O4 nano-crystals introduced significantly affected the kinetics of lithium ions and improvement of low capacity of carbon used as LIBs anodes. (C) 2013 Elsevier B.V. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0378775313002802http://hdl.handle.net/20.500.11754/45342
ISSN
0378-7753
DOI
10.1016/j.jpowsour.2013.02.017
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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