Preparation method of micro-mesoporous carbon nano capsule net

The invention discloses a preparation method of a micro-mesoporous carbon nano capsule net. The preparation method comprises the following steps: by taking halloysite as a hard template and glucose orcane sugar as a raw material, carrying out ultrasonic stirring and uniform mixing, then carrying out hydrothermal reaction to obtain a hydrothermal carbon composite material, and then carrying out high-temperature carbonization, halloysite etching and alkali activation treatment in a protective atmosphere to obtain the micro-mesoporous carbon nano capsule net. The prepared micro-mesoporous carbonnano capsule net is amorphous carbon with a three-dimensional network structure, is large in specific surface area and pore volume, and has excellent electrochemical performance and adsorption performance. The hard template halloysite required by the invention is wide in source and low in cost, and has better biocompatibility; and the preparation process is simple and feasible, is convenient to control, and is beneficial