▎ 摘　　要

NOVELTY - A defect-rich metal oxygen (sulfur) chalcogenide/graphene oxide composite material is prepared by adding metal lithium sheet, graphene oxide gel and target metal oxygen (sulfur) compound to ethylenediamine (EDA), stirring the solution under normal temperature condition, dripping and stirring hydrochloric acid after fully reacting, and freeze-drying after washing the product. USE - Preparation of defect-rich metal oxygen (sulfur) chalcogenide/graphene oxide composite material e.g., titanium dioxide material, zinc oxide and molybdenum oxide, and molybdenum sulfide for introducing sulfur vacancies (all claimed). ADVANTAGE - The method can be carried out at room temperature, is easy to operate, and costs low.