A novel amorphous Fe2V4O13 as cathode material for lithium secondary batteries

Abstract

Amorphous Fe2V4O13 has been synthesized by the liquid precipitation method. The compound showed nano-lamellar structure with the average thickness of layer was about 40nm, which leads to an enhanced lithium ion transport and sustained volume variations. The initial specific capacity is 235mAh/g, and the specific capacity still remained 201mAh g−1 after 40 cycles at the rate of 0.25C in the range of 2.0–4.0V, 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.