Article Title

Preparation of carbon-coated iron oxide nanoparticles dispersed on graphene sheets and applications as advanced anode materials for lithium-ion batteries

Authors

Huilong Fei, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Zhiwei Peng, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Lei Li, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Yang Yang, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Wei Lu, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Errol L. G. Samuel, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Xiujun Fan, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
and James M. Tour, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA Richard E. Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA

Keywords

Fe2O3 nanoparticles, carbon coating, graphene, chemical vapor deposition (CVD), anode, lithium ion batteries

Abstract

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 °C). 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.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-014-0416-0

Publisher

Tsinghua University Press

Recommended Citation

Huilong Fei,Zhiwei Peng,Lei Li,Yang Yang,Wei Lu,Errol L. G. Samuel,Xiujun Fan,James M. Tour, Preparation of carbon-coated iron oxide nanoparticles dispersed on graphene sheets and applications as advanced anode materials for lithium-ion batteries. NanoRes.2014, 7(4): 502–510