▎ 摘　　要

A flower-like vanadium sulfide/reduced graphene oxide (VS4/rGO) composite was prepared by a typical hydrothermal method and it was investigated as cathode for aluminum-ion batteries with non-inflammable and non-explosive ionic-liquid electrolytes. The charge/discharge performance measurements were performed in a voltage range of 0.1-2.0 V versus Al/AlCl4-, which gave an initial charge/discharge specific capacity af approximately 491.57 and 406.94 mAhg(-1), respectively, at a current density of 100 mAg(-1). Additionally, in the cycling performance, the discharge capacity was observed to remain over 80, 70, and 60 mAhg(-1) at current densities of 100, 200, and 300 mAg(-1) after 100 cycles, respectively. The result of a coulombic efficiency over 90% after 100 cycles and high retained capacity indicate that the composite is a favorable cathode material for new rechargeable aluminum-ion batteries.