TY  - JOUR
AU  - Fei, Huilong
AU  - Peng, Zhiwei
AU  - Li, Lei
AU  - Yang, Yang
AU  - Lu, Wei
AU  - Samuel, Errol L. G.
AU  - Fan, Xiujun
AU  - Tour, James M.
PY  - 2014
TI  - Preparation of carbon-coated iron oxide nanoparticles dispersed on graphene sheets and applications as advanced anode materials for lithium-ion batteries
JO  - Nano Research
SN  - 1998-0124
SP  - 502
EP  - 510
VL  - 7
IS  - 4
AB  - We report a novel chemical vapor deposition (CVD) based strategy to synthesize carbon-coated Fe2O3 nanoparticles dispersed on graphene sheets (Fe2O3@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 ℃). In the resulting nanocomposite, each individual Fe2O3 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 Fe2O3@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.
UR  - https://doi.org/10.1007/s12274-014-0416-0
DO  - 10.1007/s12274-014-0416-0