摘要
A facile synthesis of Ge/MoS <sub>2</sub> nanocomposites is developed by blending Ge nanoparticles into MoS <sub>2</sub> nanosheets in solution at room temperature followed by annealing at 350 °C. The decoration with Ge nanoparticles in this compound can synergistically improve the electrochemical performance of LIBs because of increased conductivity and structure stability. Ge/MoS <sub>2</sub> nanocomposites exhibit a high reversible capacity of 1362 mA h g <sup>−1</sup> cycled at 0.2 A g <sup>−1</sup> after 50 cycles. Even at high rate capability (>1 A g <sup>−1</sup> ), the battery performance of Ge/MoS <sub>2</sub> from 0.2 A g <sup>−1</sup> to 15 A g <sup>−1</sup> is superior to the performances of the reported graphene-based and other nanoparticle-decorated MoS <sub>2</sub> anodes. Finally, a coin-type full-cell with a high areal capacity (∼3 mA h cm <sup>−2</sup> ) and a high volumetric capacity (∼1700 mA h cm <sup>−3</sup> ) was also achieved with a Ge/MoS <sub>2</sub> anode and a Li(MnCoNi)O <sub>2</sub> cathode.