Journal
NANO ENERGY
Volume 5, Issue -, Pages 9-19Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2014.01.004
Keywords
alpha-Fe2O3; V2O5; Solid solutions; Nanoplates; Lithium ion anodes
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Funding
- National Nature Science Foundation of China [51125008, 11274392]
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In this work, we report on the first synthesis of novel ultrathin (alpha-Fe2O3)(1) (-) (x)(V2O5)(x) solid-solution nanoplates via a facile one-pot hydrothermal method. Shape selection and crystallographic orientation show closely interrelated with the V2O5-modification. Irregular alpha-Fe2O3 particles with random exposed facets were obtained in the absence of vanadium sources. When tested as anode materials for lithium batteries, the ultrathin (alpha-Fe2O3)(1) (-) (x)(V2O5) nanoplates show greatly enhanced performance of Li storage. Under the condition of high current density of 1 C, the ultrathin (alpha-Fe2O3)(1) (-) (x)(V2O5)(x) nanoplates were capable of retaining a specific capacity of 771 mA h g(-1) over 100 cycles. Even when cycled at 5 C and 10 C, comparable capacities of 482 and 365 mA h g(-1) could be achieved, indicating an excellent rate capability. (C) 2014 Elsevier Ltd. All rights reserved.
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