Nano-MoS2/poly (3,4-ethylenedioxythiophene): Poly(styrenesulfonate) composite prepared by a facial dip-coating process for Li-ion battery anode

MoS2/poly (3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) composite (MoS2/P) was prepared through a facial and environmental friendly dip-coating method by dispersing nanostructured MoS2 particles in PEDOT:PSS aqueous solution and subsequent filtering process. The characterization of XRD, FTIR, TGA, SEM and TEM revealed that the surface of rose-like MoS2 was homogeneously coated with a thin layer of PEDOT:PSS. After coating, MoS2/P composite showed an enhanced electric conductivity of 1.0 × 10−1 S/cm, about 5 times of that (2.2 × 10−2 S/cm) of the pristine MoS2. MoS2/P composite electrode exhibited significantly improved electrochemical performances such as cyclability and rate capability. Half-cell tests showed that MoS2/P composite electrode delivered a reversible capacity of 712 mAh g−1 at a current density of 50 mA g−1 and retained 81% capacity after 100 cycles. At a higher current density of 200/300 mA g−1, it still retained a capacity of 439/363 mAh g−1 respectively, as compared to 191/140 mAh g−1 for the pristine MoS2.