The solid product of heavy oil slurry-bed hydrocracking as raw material was treated by the chemical activation method to activate its structure,which aims to study the influence laws of process conditions on the composition,structure and electrochemical energy storage performance of the activated product.The experimental results demonstrate that the solid product with uniformly dispersed monolayer molybdenum disulfide composite structure in petroleum coke is used as raw material to prepare molybdenum sulfide/porous carbon composite materials through KOH activation.The specific surface area of the activated product can reach 1998.5 m2/g at the mass ratio of petroleum coke to KOH of 1/3,and 800 ℃ for 2.5 h.The electrochemistry test results show that the above molybdenum sulfide/porous carbon composite materials exhibit the capacitance of 176.1 F/g at the current density of 1 A/g in 6 mol/L KOH electrolyte and a good rate capability.In addition,the assembled symmetric supercapacitor device exhibits the high power density of 900.01 W/kg,energy density of 24.25 W·h/kg in 1 mol/L Na2SO4 electrolyte,and the capacitance retention rate of 91.17％after 3000 cycles,possessing good electrochemical performance and cycling stability.
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