Thispaperaims to develop a high-performance electrode material for supercapacitor applications.A facilehydrothermal, environment-friendly,and low-costtechniquewas used for synthesizing hexagonal (2H) phase MoS2.Structuraland morphological characterizations were studiedusingXRD, Ramanspectroscopy, SEM, EDX,and HRTEM. The results demonstratethathigh-quality flower-likeof MoS2microspherethat providesa very highsurface area has been wellsynthesized. Symmetric supercapacitors (SCs) based onMoS2with Ag-doped reduced graphene oxide (RGO-Ag) additivewasfabricated and electrochemicallytested using three alkaline hydroxides electrolytenamelyNaOH, LiOH, and KOH.Theeffectof differentelectrolytes has been investigated using multichannel galvanostats wherecyclic voltammetry(CV), galvanostatic charge/discharge(GCD),and electrochemical impedance spectroscopy(EIS)experimentswere carried out.Despite the weak alkaline nature of LiOH electrolyte, itrevealsconvenient electrochemical performances witha relativelylargespecific capacitance of 120 F.g-1at5mV.s-1, a high power density of about 20KW.Kg-1,and excellentdurability with 90.3 % capacitance retention after more than 10000cycles.The high-power capability and retention rate of the MoS2based SC indicate that it is a candidate material for high-performance SCs applications