▎ 摘　　要

NOVELTY - Preparation of polyaniline-coated graphene-nickel-manganese-lactate dehydrogenase (LDH) composite electrode material comprises mixing oxidized graphene/aniline mixture, initiator and inorganic acid, performing polymerization reaction, centrifuging, washing filter cake with deionized water to neutralize to obtain crude graphene/polyaniline, adding crude nickel nitrate, manganese nitrate, ammonium fluoride and urea or hexamethylene tetramine, performing hydrothermal reaction, filtering, washing and drying. USE - Method of preparing polyaniline-coated graphene-nickel-manganese-lactate dehydrogenase composite electrode material (claimed). ADVANTAGE - The material has large specific surface area, good conductivity and high specific capacitance.