Please use this identifier to cite or link to this item: https://doi.org/10.1039/c1ee02168k
Title: A general strategy toward graphene@metal oxide core-shell nanostructures for high-performance lithium storage
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. 
Issue Date: Dec-2011
Source: 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. (2011-12). A general strategy toward graphene@metal oxide core-shell nanostructures for high-performance lithium storage. Energy and Environmental Science 4 (12) : 4954-4961. ScholarBank@NUS Repository. https://doi.org/10.1039/c1ee02168k
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 at 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-Fe2O 3. 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. © The Royal Society of Chemistry 2011.
Source Title: Energy and Environmental Science
URI: http://scholarbank.nus.edu.sg/handle/10635/95624
ISSN: 17545692
DOI: 10.1039/c1ee02168k
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

190
checked on Apr 24, 2018

WEB OF SCIENCETM
Citations

181
checked on Apr 24, 2018

Page view(s)

43
checked on Feb 27, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.