▎ 摘　　要

NOVELTY - Preparing gradient pore structure graphene aerogel microspheres comprises e.g. (i) ultrasonic dispersing graphene oxide powder, lithium salt and ionic liquid to obtain graphene oxide ionic liquid solution, (ii) preparing graphene oxide ionic liquid microdroplets, (iii) making the graphene oxide ionic liquid microdroplets absorb water in the inorganic salt solution to form gradient pore structure microemulsion, (iv) subjecting the gradient pore structure microemulsion to chemical reduction reaction to obtain gradient pore structure graphene ionic liquid composite wet gel microspheres, (v) washing to remove the ionic liquid and lithium salt contained in the gradient pore structure graphene ionic liquid composite wet gel microspheres to obtain gradient pore structure graphene wet gel microspheres, and (vi) drying to obtain final product. USE - The aerogel microsphere is useful in energy storage and conversion field, medicine slow release field, environmental governance field, deep space exploration field, national defense military field and sound insulation and noise reduction field (claimed). ADVANTAGE - The method: solves the technical problems that existing technologies fail to realize the preparation of graphene aerogel microspheres, and enriches the connotation and use of graphene aerogel microspheres. DETAILED DESCRIPTION - Preparing gradient pore structure graphene aerogel microspheres comprises (i) ultrasonic dispersing graphene oxide powder, lithium salt and ionic liquid to obtain graphene oxide ionic liquid solution, (ii) preparing graphene oxide ionic liquid microdroplets by using the graphene oxide ionic liquid solution as dispersed phase and polyvinyl alcohol aqueous solution as continuous phase, and microfluidic glass chip system, (iii) making the graphene oxide ionic liquid microdroplets absorb water in the inorganic salt solution by using the osmotic pressure difference to induce phase separation of the ionic liquid contained in the graphene oxide ionic liquid microdroplets to form gradient pore structure microemulsion, (iv) subjecting the gradient pore structure microemulsion to chemical reduction reaction to obtain gradient pore structure graphene ionic liquid composite wet gel microspheres, (v) washing the gradient pore structure graphene ionic liquid composite wet gel microspheres to remove the ionic liquid and lithium salt contained in the gradient pore structure graphene ionic liquid composite wet gel microspheres to obtain gradient pore structure graphene wet gel microspheres, and (vi) drying the graphene wet gel microspheres under normal pressure to obtain final product.