A green and fast strategy for the scalable synthesis of Fe2O3/graphene with significantly enhanced Li-ion storage properties
- 24 January 2012
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 22 (9), 3868-3874
- https://doi.org/10.1039/c2jm15927a
Abstract
In this study, we proposed and demonstrated an environmentally friendly and effective methodology to prepare Fe2O3 /graphene composites. The essence of this method was that ferrous ions could serve as both reductant and the iron source for Fe2O3 , which is greener and more facile than the preparation methods for other iron oxide/graphene composites. As anode materials for lithium ion batteries, Fe2O3 /graphene composites achieved high reversible capacities of about 800 mA h g−1 after 100 cycles at a charge–discharge rate of 0.2 C. Moreover, they delivered rate capacities as high as 420 mA h g−1 at a rate of 5 C. Both the cycling performance and rate capacities of Fe2O3 /graphene composites were better than those of commercial Fe2O3 and its graphene composites. The improved performance toward the storage of Li+ was ascribed to graphene sheets, which acted as volume buffers and electron conductors. We believe that the strategy of preparing Fe2O3 /graphene composites proposed by us may open a new way for the synthesis of metal oxide/graphene for various potential purposes.Keywords
This publication has 58 references indexed in Scilit:
- Nanostructured Reduced Graphene Oxide/Fe2O3 Composite As a High-Performance Anode Material for Lithium Ion BatteriesACS Nano, 2011
- Fast Synthesis of Graphene Sheets with Good Thermal Stability by Microwave IrradiationChemistry – An Asian Journal, 2011
- Large-Scale Porous Hematite Nanorod Arrays: Direct Growth on Titanium Foil and Reversible Lithium StorageThe Journal of Physical Chemistry C, 2010
- Water-Dispersible Magnetite-Reduced Graphene Oxide Composites for Arsenic RemovalACS Nano, 2010
- Constructing Hierarchical Spheres from Large Ultrathin Anatase TiO2 Nanosheets with Nearly 100% Exposed (001) Facets for Fast Reversible Lithium StorageJournal of the American Chemical Society, 2010
- Dispersion of Graphene Sheets in Organic Solvent Supported by Ionic InteractionsAdvanced Materials, 2009
- Synthesis of Water Soluble GrapheneNano Letters, 2008
- Reversible Lithium Intercalation in Teardrop‐Shaped Ultrafine SnP0.94 Particles: An Anode Material for Lithium‐Ion BatteriesAdvanced Materials, 2007
- Sulphur-polypyrrole composite positive electrode materials for rechargeable lithium batteriesElectrochimica Acta, 2006
- α‐Fe2O3 Nanotubes in Gas Sensor and Lithium‐Ion Battery ApplicationsAdvanced Materials, 2005