Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 47, Pages 19101-19105Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm13263f
Keywords
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Funding
- National Key Project on Basic Research [2011CB935904]
- Natural Science Foundation of Fujian Province [2009 J01044, 2010J05041]
- Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences [SZD09003]
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In this article, a simple route for modifying the morphology and lithium storage performance of iron oxide composites has been developed by using Ni2+ or Co2+ to substitute Fe3+. The as-prepared MFe2O4 (M = Ni, Co) nanoparticles (similar to 5 nm) were uniformly distributed on the surface of the carbon substrates. When evaluated as anode materials for lithium ion batteries, these composites showed high specific capacity, excellent cycling performance and rate capabilities. For example, the CoFe2O4/graphene sheets composite delivered a high reversible capacity of 950 mA h g(-1), even higher than the theoretical value, as well as excellent cycling performance.
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