▎ 摘　　要

NOVELTY - Graphite oxide is dispersed in deionized water, ultrasonically processed, glucose solution and aqueous ammonia are added, and stirred. The mixed solution is cooled and centrifuged, dried to obtain pure graphene. Graphene is dispersed in deionized water and ultrasonically processed. Manganese sulfate and potassium permanganate solution is added into graphene dispersion liquid, and stirred to obtain precursor solution. The precursor solution is added into a hydrothermal reaction kettle, reacted and dried to obtain manganese dioxide nano rod/graphene oxide composite electrode material. USE - Manufacture of manganese dioxide nano rod/graphene composite electrode material (claimed) for supercapacitor. ADVANTAGE - The manganese dioxide nano rod/graphene composite electrode material is easily manufactured. DETAILED DESCRIPTION - Graphite oxide is dispersed in deionized water, and ultrasonically processed to obtain 0.5 mg/mL graphite oxide-dispersed solution. 30 Wt.% glucose solution and 25 wt.% aqueous ammonia are added into the dispersed solution, and stirred for 15 minutes. The mixed solution is stirred in 95 degrees C water bath for 1 hour, cooled and centrifuged, filtered, washed and dried at 50 degrees C for 12 hours to obtain pure graphene. 0.05 g Graphene is dispersed in 80 mL deionized water and ultrasonically processed for 20 minutes. Manganese sulfate and potassium permanganate solution is added into graphene dispersion liquid, and stirred to obtain precursor solution. The molar concentration of the manganese sulfate and potassium permanganate solution is 0.015-0.12 M. The number of moles of manganese sulfate and potassium permanganate are same. The precursor solution is added into a hydrothermal reaction kettle, reacted at 120-180 degrees C for 8-24 hours, centrifuged, filtered and washed, and dried at 80 degrees C for 24 hours to obtain manganese dioxide nano rod/graphene oxide composite electrode material.