(α-Fe2O3)1 - x(V2O5)x solid solutions: An excellent lithium ion anodes material

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.