Monodispersed hollow carbon/Fe3O4 composite microspheres for high performance anode materials in lithium-ion batteries
- Authors
- Hwang, Jun-Ki; Lim, Hyung-Seok; Sun, Yang Kook; Suh, Kyung-Do
- Issue Date
- Dec-2013
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Hollow structure; Carbon; Magnetite; Carbon/magnetite composite; Anode materials; Lithium ion battery
- Citation
- JOURNAL OF POWER SOURCES, v.244, pp.538 - 543
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF POWER SOURCES
- Volume
- 244
- Start Page
- 538
- End Page
- 543
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/26596
- DOI
- 10.1016/j.jpowsour.2013.02.017
- ISSN
- 0378-7753
- 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.
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