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Title: Synthesis of porous hollow Fe 3O 4 beads and their applications in lithium ion batteries
Authors: Chen, Y.
Xia, H. 
Lu, L. 
Xue, J. 
Issue Date: 21-Mar-2012
Citation: Chen, Y., Xia, H., Lu, L., Xue, J. (2012-03-21). Synthesis of porous hollow Fe 3O 4 beads and their applications in lithium ion batteries. Journal of Materials Chemistry 22 (11) : 5006-5012. ScholarBank@NUS Repository.
Abstract: Porous hollow Fe 3O 4 beads constructed with rod-shaped Fe 3O 4 nanoparticles were synthesized via a facile solvothermal route. The formation mechanism of the obtained Fe 3O 4 beads was proposed on the basis of oriented assembly and Ostwald ripening. The as-prepared Fe 3O 4 beads had promising applications as lithium ion battery anodes, which showed a reversible specific capacity of 500 mAh g -1 after 50 cycles at 100 mA g -1. After being decorated with a carbon coating layer, the Fe 3O 4/C composite beads showed an enhanced capacity of 700 mAh g -1 after 50 cycles at 100 mA g -1. Such a satisfactory electrochemical performance was due to several factors of the Fe 3O 4/C composite beads including high theoretical capacity of Fe 3O 4, nanosized active Fe 3O 4 particles, hollow porous structure that mitigated the volume change problem, and carbon coating layer that enhanced both the electronic conductivity and structure integrity. © 2012 The Royal Society of Chemistry.
Source Title: Journal of Materials Chemistry
ISSN: 09599428
DOI: 10.1039/c2jm15440d
Appears in Collections:Staff Publications

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