▎ 摘　　要

NOVELTY - A two-dimensional nickel-organic structure/reduced graphene oxide (rGO) composite comprises a two-dimensional electroconductive nickel-organic structure comprising an organic ligand comprising an optionally substituted 6-30C aryl hexamine and nickel which are repeatedly bonded in a pulverized form, and reduced graphene oxide (rGO). The two-dimensional electrically conductive nickel-organic structure is a two-dimensional structure which is agglomerated to form spherical particles. The reduced graphene oxide (rGO) is in the form of overlapping nanosheets. The spherical particles are stacked on the nanosheets to be uniformly distributed over the entire surface, and enter between the nanosheets. USE - Two-dimensional nickel-organic structure/reduced graphene oxide composite used as electrode material for secondary battery, super capacitor e.g. electric double layer capacitor, and electrochemical sensor material (all claimed). ADVANTAGE - The two-dimensional nickel-organic structure/reduced graphene oxide composite provides electrode having excellent mechanical flexural strength, high density, and high discharge capacity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) manufacture of the two-dimensional nickel-organic structure/reduced graphene oxide (rGO) composite, which involves (a) dispersing a dispersion of the two-dimensional nickel-organic structure, and preparing a graphene oxide dispersion, dispersing graphene oxide in a solvent, (b) preparing a two-dimensional nickel-organic structure/GO mixed dispersion by mixing the two-dimensional nickel-organic structure dispersion and the graphene oxide dispersion, (c) separating the solvent from the two-dimensional nickel-organic structure/graphene oxide mixture dispersion and preparing two-dimensional Ni-organic structure/graphene oxide composite, and (d) reducing the two-dimensional Ni-organic structure/graphene oxide composite by heat treatment.