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Abstract:
Ultrathin Li4Ti5O12 (LTO) nanosheets were successfully synthesized for the first time using the ultrathin titanate nanowires as a precursor. The synthesized Li4Ti5O12 nanosheets have a large surface area of 159.2 m(2)g(-1) and their thickness was found to be ca. 5-7 nm. These nanosheets were highly crystalline and used as anode materials in rechargeable lithium-ion batteries. A stable capacity of 150 mAhg(-1) for LTO nanosheets can be retained after 70 cycles at a current density of 1 Ag-1 in the voltage window of 2.5-1.0V. It is notable that a large capacity of 267.5 mAhg(-1) was obtained at the second discharge and 166 mAhg(-1) can be retained after 70 cycles at 1 Ag-1 in the voltage range of 2.5-0.02 V. These results indicate that the anode materials made of spinel LTO nanosheets displayed a large reversible capacity at a high charge/discharge rate.
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FUNCTIONAL MATERIALS LETTERS
ISSN: 1793-6047
Year: 2011
Issue: 4
Volume: 4
Page: 389-393
0 . 7 2 4
JCR@2011
1 . 2 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
JCR Journal Grade:3
CAS Journal Grade:2
Cited Count:
SCOPUS Cited Count: 29
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
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