▎ 摘　　要

NOVELTY - A sodium intercalated manganese dioxide/graphene bivalve hollow microsphere material comprises an inner graphene shell layer (1) and a sodium intercalated manganese dioxide shell layer (2) that covers a surface of the inner graphene shell layer, where the manganese dioxide shell layer has a foil layer assembled by a structure and the inner graphene shell layer has layers formed by stacking in a laminated structure. USE - Sodium intercalated manganese dioxide/graphene bivalve hollow microsphere material for use in an electrochemical supercapacitor electrode for energy storage application. ADVANTAGE - The material has better conductivity and ion diffusion transport properties, high specific capacitance, high stability and better charge-discharge cycle. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for preparing a sodium intercalated manganese dioxide/graphene bivalve hollow microsphere material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a sodium intercalated manganese dioxide/graphene bivalve hollow microsphere material. Inner graphene shell layer (1) Sodium intercalated manganese dioxide shell layer (2)