Preparation of ultrathin carbon-coated CdS nanobelts for advanced Li and Na storage

In this paper, we report a simple hydrothermal method for preparation of ultrathin carbon-coated CdS (CdS@C) nanobelts. The CdS@C nanobelts show superior electrochemical properties as an anode material for Li-ion batteries. The optimized CdS@C composites deliver a reversible capacity around 910 mAhg^-1 and 48 mAhg^-1 at 0.1 Ag^-1 and 30.0 Ag^-1, respectively. Moreover, the optimized nanobelts are also potential materials for Na storage. A stable capacity around 240 mAhg^-1 is obtained at 0.1 Ag^-1, even after 100 cycles.