Please use this identifier to cite or link to this item:
Title: Graphene-encapsulated hollow Fe3O4 nanoparticle aggregates as a high-performance anode material for lithium ion batteries
Authors: Chen, D.
Ji, G.
Ma, Y.
Lee, J.Y. 
Lu, J.
Keywords: anode material
lithium ion batteries
Issue Date: 24-Aug-2011
Citation: Chen, D., Ji, G., Ma, Y., Lee, J.Y., Lu, J. (2011-08-24). Graphene-encapsulated hollow Fe3O4 nanoparticle aggregates as a high-performance anode material for lithium ion batteries. ACS Applied Materials and Interfaces 3 (8) : 3078-3083. ScholarBank@NUS Repository.
Abstract: Graphene-encapsulated ordered aggregates of Fe3O4 nanoparticles with nearly spherical geometry and hollow interior were synthesized by a simple self-assembly process. The open interior structure adapts well to the volume change in repetitive Li+ insertion and extraction reactions; and the encapsulating graphene connects the Fe 3O4 nanoparticles electrically. The structure and morphology of the graphene-Fe3O4 composite were confirmed by X-ray diffraction, scanning electron microscopy, and high-resolution transmission microscopy. The electrochemical performance of the composite for reversible Li+ storage was evaluated by cyclic voltammetry and constant current charging and discharging. The results showed a high and nearly unvarying specific capacity for 50 cycles. Furthermore, even after 90 cycles of charge and discharge at different current densities, about 92% of the initial capacity at 100 mA g-1 was still recoverable, indicating excellent cycle stability. The graphene-Fe3O4 composite is therefore a capable Li+ host with high capacity that can be cycled at high rates with good cycle life. The unique combination of graphene encapsulation and a hollow porous structure definitely contributed to this versatile electrochemical performance. © 2011 American Chemical Society.
Source Title: ACS Applied Materials and Interfaces
ISSN: 19448244
DOI: 10.1021/am200592r
Appears in Collections:Staff Publications

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


checked on Jun 19, 2021


checked on Jul 5, 2019

Page view(s)

checked on Jun 8, 2021

Google ScholarTM



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