Please use this identifier to cite or link to this item:
Title: Self-assembled porous NiFe2O4 floral microspheres inlaid on ultrathin flake graphite as anode materials for lithium ion batteries
Authors: Qu, L
Hou, X
Huang, X
Liang, Q
Ru, Q
Wu, B
Lam, KH 
Issue Date: 2017
Source: ChemElectroChem, 2017, v. 4, no. 12, p. 3148-3155
Abstract: A fairly simple and environmentally friendly hydrothermal method is reported to synthesize anode materials composed of NiFe2O4 (NFO) and ultrathin flake graphite (UFG), which are denoted as NFO/UFG composites. Several experiments were then carried out in order to determine the most beneficial proportion of UFG in the composite. Finally, it was found that the NFO/UFG-2 composite exhibits the most beneficial morphological structure which is characterized as three-dimensional floral NFO microspheres assembled by many porous nanosheets anchored on the pedestal of UFG (as determined from SEM and TEM measurements). In addition, the NFO/UFG-2 composite also demonstrates the best electrochemical performances. It shows a stable long-term cycling performance with a high initial Coulombic efficiency of 83.4 % and even obtains a high specific capacity of 963.4 mAh g−1 after 300 cycles at a current density of 200 mA g−1 and remarkable reversibility not only at low current densities but also at high current densities. Satisfyingly, the good synergy between porous NFO and UFG significantly enhances the electronic conductivity and relieves the huge bulk expansion of traditional transition metal oxide. This unique electrode material is demonstrated to be a promising candidate for the new-generation lithium ion batteries.
Keywords: Anode materials
Composite materials
Lithium ion batteries
Publisher: Wiley-VCH Verlag
Journal: ChemElectroChem 
ISSN: 2196-0216
DOI: 10.1002/celc.201700862
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Sep 5, 2020


Last Week
Last month
Citations as of Sep 19, 2020

Page view(s)

Citations as of Sep 20, 2020

Google ScholarTM



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