A novel amorphous Fe2V4O13 as cathode material for lithium secondary batteries

Amorphous Fe2V4O13 has been synthesized by the liquid precipitation method. The compound showed nanolamellar structure with the average thickness of layer was about 40 nm, which leads to an enhanced lithium ion transport and sustained volume variations. The initial specific capacity is 235 mAh/g, and the specific capacity still remained 201 mAh g(-1) after 40 cycles at the rate of 0.25 C in the range of 2.0-4.0 V. which only brought about an 14% reduction of the capacity. The results show that the amorphous nanostructured Fe2V4O13 is a novel promising cathode material due to its high specific capacity, power density and good cycle performance. (C) 2011 Elsevier B.V. All rights reserved.