VOPO4 nanosheets as anode materials for lithium-ion batteries

Abstract

VOPO₄ nanosheets are successfully synthesized using a hydrothermal method followed by calcination. The XRD results reveal that obtained products are crystallized in the orthorhombic VOPO₄ phase. SEM and TEM images demonstrate that VOPO₄ products possess unique nanosheet morphology. Electrochemical tests show that the VOPO₄ nanosheets exhibit an excellent electrochemical performance as anode materials. They can deliver an initial discharge capacity of 1356 mA h g⁻¹ at 0.1 C, and possess a favorable capacity at rates of 0.2, 1, and 2 C. The synthesized VOPO₄ can be used as a good anode material; furthermore, the nanosheet structure can effectively improve the electrochemical performance of this material.