One‐Step Solvothermally Synthesized Ni Doped MoS₂@SnS₂ Nanocomposite as a High Performance Supercapacitor Electrode Material

Abstract In the present study, a Ni doped bimetallic sulfide Ni‐MoS 2 @SnS 2 flower‐like nanocomposite is synthesized via a facile one‐step solvothermal method. The Ni‐MoS 2 @SnS 2 with the unique structure and composition demonstrates superior supercapacitor performance (a specific capacitance of approximate 1150, and 878 F cm −2 at the current density of 0.5 mA cm −2 and 5 mA cm −2 , respectively) in comparison to sole SnS 2 (a specific capacitance of about 486, and 445 F cm −2 at the same parameters). This remarkable enhancement in the electrochemical performance of Ni‐MoS 2 @SnS 2 may be attributed to synergic effect of bimetallic sulfides with flower‐like structure as fast electronic transport and minimal volume variation of the formation of nanocomposite. More precisely, it exhibits 57.53 Wh kg −1 , 1500.78 W kg −1 energy and power density at 0.5 mA cm −2 , respectively, along with the better capacity retention of 85.2 % at 1 mA cm −2 even after 5000 constructive charge‐discharge cycles. It is viable approach for the development and design of novel type electrode materials featuring with flower ‐like structure is proposed to enhance the structural stability of supercapacitor.