▎ 摘　　要

NOVELTY - Producing a carbon and sulfur complex having a hierarchical structure comprises reducing the carbon dioxide-containing gas in the presence of a reducing agent and a carbonate-based pore template to prepare a carbon material, mixing sulfur with the prepared carbon material and heat-treating. USE - The carbon and sulfur complex is useful for next-generation lithium-sulfur battery electrode for small electronic devices. ADVANTAGE - The lithium-sulfur battery anode material has voltage of 1.7-2.8 V, current density of 0.1-7.0 C and charge and discharge capacity of 700-1300 mAh/g. The cathode material has charge/discharge capacity of 600-1300 mAh/g based on voltage of 1.7-2.8 V and a current density of 0.1 to 5.0 C. The method: is economical and environmentally friendly; improves stability. The complex improves electrical conductivity of battery, electric capacity and battery life. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) carbon and sulfur complex having a hierarchical structure comprising hierarchical carbon structure in which mesopores and micropores coexist is formed and has mesopores of 1.5-3.0 cm3/g, and 3-6 times the amount of sulfur compared to the carbon mass is contained in the carbon structure; (2) producing porous carbon fiber for an intermediate layer of a lithium-sulfur battery comprising electrospinning with a carbon dioxide reducing agent and conductive polymer in the presence of an organic solvent, and heat-treating under carbon dioxide conditions; (3) porous carbon fiber having total surface area of 100-700 m3/g, total pore volume of 0.1-1.2 cm3/g, and a surface nitrogen of 5-25%; (4) lithium-sulfur battery anode material comprising the carbon and sulfur complex; (5) lithium-sulfur battery intermediate layer comprising the porous carbon fiber; (6) producing carbon fiber and sulfur complex comprising (a) electrospinning in the presence of a carbon dioxide reducing agent and a conductive polymer in the presence of an organic solvent, heat treating under carbon dioxide conditions to prepare a porous carbon fiber, and (b) mixing sulfur with the carbon fiber, heat-treating, and filtering graphene; (7) carbon fiber and sulfur complex comprising hierarchical carbon structure in which mesopores and micropores coexist, where mesopores are 0.1-1.0 cm3/g, and contains 1-2 times the amount of sulfur compared to the carbon mass in the carbon fiber; and (8) lithium-sulfur battery cathode material comprising carbon fiber and sulfur complex. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating the method for producing a carbon and sulfur complex having hierarchical structure.