▎ 摘　　要

NOVELTY - The production method involves using coaxial multilayer core-shell production process (1000) comprising a coaxial flow system (100) with first flow path (101) and first fluid exit (1011) at an end of the first flow path. A first fluid flows through the first flow path and exits through the first fluid exit, and a second fluid flows through the second flow path (102) and exits through the second fluid exit (1021) such that the second fluid circumferentially covers the first fluid upon leaving the coaxial flow system. USE - Production method for obtainment of three-dimensional closed graphene-based nano/microstructures. ADVANTAGE - Prevents the restacking and agglomeration of graphene layers under electrical field since the alignment of graphene sheets in matrix can be enabled. Allows the number and behavior of layers covering the core to be tailored by introducing flow paths and annular fluid exits. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the coaxial flow system. Coaxial flow system (100) First flow path (101) Second flow path (102) Coaxial multilayer core-shell production process (1000) First fluid exit (1011) Second fluid exit (1021)