▎ 摘　　要

NOVELTY - The preparation method of manganese monoxide/nitrogen-doped reduced graphene oxide composite electrode material involves (i) adding manganese acetate tetrahydrate and urea to water, uniformly mixing and stirring to obtain mixed solution, (ii) adding graphene oxide to mixed solution, stirring, ultrasonically dispersing to obtain mixture, (iii) transferring the mixture to a Teflon (RTM: PTFE)-lined reactor, and hydrothermally reacting to obtain reaction product, (iv) filtering the reaction product, washing, drying, (iv) heat-treating the dried product in an inert atmosphere. USE - Preparation of manganese monoxide/nitrogen-doped reduced graphene oxide composite electrode material (claimed). ADVANTAGE - The method enables the preparation of manganese monoxide/nitrogen-doped reduced graphene oxide composite electrode material with high conductivity and excellent electrochemical property, and prevents the aggregation and pulverization of manganese oxide particles during the continuous charging and discharging process. DETAILED DESCRIPTION - The preparation method of manganese monoxide/nitrogen-doped reduced graphene oxide composite electrode material involves (i) adding 3.5-10 %mass manganese acetate tetrahydrate and 1.25-4.6 %mass urea to water, uniformly mixing and stirring to obtain mixed solution, (ii) adding 30-100 mg graphene oxide to 30-70 ml mixed solution, stirring, ultrasonically dispersing to obtain mixture, (iii) transferring the mixture to a Teflon (RTM: PTFE)-lined reactor, and hydrothermally reacting to obtain reaction product, (iv) filtering the hydrothermal reaction product, washing, drying, (iv) heat-treating the dried product in an inert atmosphere to obtain solid product with particle size of 100 nm.