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- Title
Preparation of carbon-coated iron oxide nanoparticles dispersed on graphene sheets and applications as advanced anode materials for lithium-ion batteries.
- Authors
Fei, Huilong; Peng, Zhiwei; Li, Lei; Yang, Yang; Lu, Wei; Samuel, Errol; Fan, Xiujun; Tour, James
- Abstract
We report a novel chemical vapor deposition (CVD) based strategy to synthesize carbon-coated FeO nanoparticles dispersed on graphene sheets (FeO@C@G). Graphene sheets with high surface area and aspect ratio are chosen as space restrictor to prevent the sintering and aggregation of nanoparticles during high temperature treatments (800 °C). In the resulting nanocomposite, each individual FeO nanoparticle (5 to 20 nm in diameter) is uniformly coated with a continuous and thin (two to five layers) graphitic carbon shell. Further, the core-shell nanoparticles are evenly distributed on graphene sheets. When used as anode materials for lithium ion batteries, the conductive-additive-free FeO@C@G electrode shows outstanding Li storage properties with large reversible specific capacity (864 mAh/g after 100 cycles), excellent cyclic stability (120% retention after 100 cycles at 100 mA/g), high Coulombic efficiency (∼99%), and good rate capability. [Figure not available: see fulltext.]
- Publication
Nano Research, 2014, Vol 7, Issue 4, p1
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-014-0416-0