Synthesis and electrochemical performance of Bi2WO6/graphene composite as anode material for lithium-ion batteries.

A Bi 2 WO 6 /graphene composite synthesized by sol–gel and sintering processes was investigated as anode material for Li-ion batteries. The morphology and structure of the products were analyzed by SEM, TEM, and XRD. The electrochemical performance of Bi 2 WO 6 /graphene composite was investigated by the galvanostatic charge/discharge method, cyclic voltammetry and electrochemical impedance spectroscopy. Results showed that the first cycle of the reversible specific capacity of Bi 2 WO 6 /graphene composite reached 697.1 mA h g −1 at 50 mA g −1 . Charge/discharge cycling study indicated that the Bi 2 WO 6 /graphene composite had excellent cycling stability and superior rate capability. [ABSTRACT FROM AUTHOR]