▎ 摘　　要

NOVELTY - A mono-atom dispersed graphene foam with in situ grown nitrogen-doped carbon nanospheres is grown in situ with carbon nanospheres doped with nitrogen atoms and single metal atoms. USE - Mono-atom dispersed graphene foam with nitrogen-doped carbon nanospheres used in preparation of anode material for lithium-sulfur battery (claimed). ADVANTAGE - The graphene foam improves the utilization rate and overall electrochemical performance of the anode material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of graphene foam, which involves (i) preparing graphene foam on the surface of foam metal template using vapor deposition method, (ii) growing nitrogen-containing organic nanospheres in situ on the surface of the graphene foam, calcining (C1), and removing the foam metal template; and (2) preparation of anode material of lithium-sulfur battery, which involves tableting the monoatomic dispersion in situ growth of nitrogen atom-doped carbon nanospheres graphene foam or the monoatomic dispersion in situ after growing graphene foam with carbon nanospheres doped with nitrogen atoms under pressure of 3-5 MPa and vacuum drying at 50-70 degrees C for 12-24 hours to obtain lithium-sulfur battery anode material.