▎ 摘　　要

NOVELTY - Preparing high specific surface area reducing graphene oxide powder, comprises (i) diluting the acidic oxidized graphite filter cake with water, and using alkali to adjust the pH value to 9-10, uniformly stirring and dispersing to obtain pre-reduced precursor slurry with a certain viscosity; and (ii) placing the pre-reduced precursor slurry obtained in the step (i) in the drying chamber, where the upperpart of the drying chamber is connected with the heat medium, the bottom is provided with a dispersing device and a discharging port and the heating temperature and the flow of the inert medium are set after reaching the set temperature, reducing the precursor slurry of the pre-inserted layer by the dispersing device to form uniform precursor small liquid drop, heating the inert medium from the top of the drying chamber, mixing the precursor small liquid drop countercurrent to heat transfer, and collecting the powder from the drying chamber bottom discharge port. USE - The method is useful for preparing high specific surface area reducing graphene oxide powder. ADVANTAGE - The method is simple, efficient and continuous. The powder has a large specific surface area and a controllable reduction degree, and satisfies a wide range of applications in composite materials, energy, catalysis and other fields.