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A general strategy toward graphene@metal oxide core–shell nanostructures for high-performance lithium storage
Abstract
We demonstrate a simple, efficient, yet versatile method for the realization of core–shell assembly of graphene around various metal oxide (MO) nanostructures, including nanowires (NWs) and nanoparticles (NPs). The process is driven by (i) the ring-opening reaction between the epoxy groups and amine groups in graphene oxide (GO) platelets and amine-modified MO nanostructures, respectively, and (ii) electrostatic interaction between these two components. Nearly every single NW or NP is observed to be wrapped by graphene. To the best of our knowledge, this is the first report that substrate-supported MO NWs are fully coated with a graphene shell. As an example of the functional properties of these compound materials, the graphene@α-Fe2O3 core–shell NPs are investigated as the lithium-ion battery (LIB) electrode, which show a high reversible capacity, improved cycling stability, and excellent rate capability with respect to the pristine α-Fe2O3. The superior performance of the composite electrode is presumably attributed to the effectiveness of the graphene shell in preventing the aggregation, buffering the volume change, maintaining the integrity of NPs, as well as improving the conductivity of the electrode.
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Cites
Graphene-based composite materials
Stankovich, S., Dikin, D. A., Dommett, G. H. B., Kohlhaas, K. M., Zimney, E. J., Stach, E. A., Piner, R. D., Nguyen, S. T., & Ruoff, R. S. (2006) · Nature · doi:10.1038/nature04969 · Cited by 12,922
Cited by
Jiang, J., Li, Y., Liu, J., Huang, X., Yuan, C., & Lou, X. W. (. (2012) · Advanced Materials · doi:10.1002/adma.201202146 · Cited by 2,473
Self-citationRaman spectroscopy of graphene-based materials and its applications in related devices
Wu, J.-B., Lin, M.-L., Cong, X., Liu, H.-N., & Tan, P.-H. (2018) · Chemical Society Reviews · doi:10.1039/c6cs00915h · Cited by 2,092
Graphene for batteries, supercapacitors and beyond
El-Kady, M. F., Shao, Y., & Kaner, R. B. (2016) · Nature Reviews Materials · doi:10.1038/natrevmats.2016.33 · Cited by 1,262
Graphene and Graphene‐Based Materials for Energy Storage Applications
Zhu, J., Yang, D., Yin, Z., Yan, Q., & Zhang, H. (2014) · Small · doi:10.1002/smll.201303202 · Cited by 825
Self-citationGraphene based metal and metal oxide nanocomposites: synthesis, properties and their applications
Khan, M., Tahir, M. N., Adil, S. F., Khan, H. U., Siddiqui, M. R. H., Al-warthan, A. A., & Tremel, W. (2015) · Journal of Materials Chemistry A · doi:10.1039/c5ta02240a · Cited by 709
Metadata
- Authors
- Zhou, W., Zhu, J., Cheng, C., Liu, J., Yang, H., Cong, C., Guan, C., Jia, X., Fan, H. J., Yan, Q., Li, C. M., & Yu, T.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2011
- Volume
- 4
- Issue
- 12
- Pages
- 4954
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W2129146317
- Cited by
- 272
- References
- 1
- FWCI
- 20.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Zhou, W., Zhu, J., Cheng, C., Liu, J., Yang, H., Cong, C., Guan, C., Jia, X., Fan, H. J., Yan, Q., Li, C. M., & Yu, T. (2011). A general strategy toward graphene@metal oxide core–shell nanostructures for high-performance lithium storage. Energy & Environmental Science. https://doi.org/10.1039/c1ee02168k
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