Abstract: Zn_0.76Co_0.24S nanomaterials are prepared by a simple hydrothermal method and used as electrode materials for supercapacitors. Structural analyses show that the as-synthesized material presents flower-like porous micromorphology and ultrathin nanosheets are serve as the petals. The distinct structure could not only provide much more active sites and fast ion transport paths for electrochemical reactions, but also provide the buffer spaces for volume variety in repeat charge-discharge process, thus leading to outstanding electrochemical performances. The electrochemical characterization results in the three-electrode system show that Zn_0.76Co_0.24S nanomaterials exhibit a high specific capacity and excellent rate capability and cycling stability. At 1 mA/cm², the Zn_0.76Co_0.24S electrode delivers a high specific capacity of 2 031.0 C/g. Moreover, the capacity can still be maintained at 888.9 C/g when the current density reaches 30 mA/cm². At 10 mA/cm², after 5000 charge-discharge cycles, the Zn_0.76Co_0.24S favors a high capacity retention of 90.25%.Hybrid surpercapacitors fabricated with Zn_0.76Co_0.24S and AC also exhibit satisfactory performance.The remarkable electrochemical properties are mainly ascribed to the intrinsic high conductivity of Zn_0.76Co_0.24S and the unique flower-like porous microstructure.