▎ 摘　　要

NOVELTY - Reduced graphene oxide laminate production involves preparing dispersion comprising a trivalent metal (III) salt and a graphene oxide sheet, and then adding a reducing agent to the dispersion to reduce the graphene oxide sheet to form a reduced graphene oxide sheet. The dispersion is heat treated to form a reduced graphene oxide laminate in which the reduced graphene oxide sheet is laminated, and forming metal oxyhydroxide particles located between the reduced graphene oxide sheets. USE - Method for producing reduced graphene oxide laminate. ADVANTAGE - The reduced graphene oxide laminate enables to improve capacity characteristics and lifetime characteristics of the sodium secondary battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a sodium secondary battery, which comprises multiple reduced graphene oxide sheets, an interlayer distance formed between the reduced graphene oxide sheets in a normal direction of the reduced graphene oxide sheet, a positive electrode having a positive electrode active material containing sodium, and an electrolyte. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic flowchart of the method for producing a reduced graphene oxide laminate. (Drawing includes non-English language text). Preparing graphene oxide dispersion (S10) Adding reducing agent in graphene oxide dispersion (S20) Heat-treating graphene oxide dispersion (S30)