▎ 摘　　要

NOVELTY - Preparing polydopamine-coated graphene oxide-based ternary synthetic pearl layer material, comprises (i) preparing tris(hydroxymethyl)aminomethane hydrochloride buffer solution using tris(hydroxymethyl)aminomethane hydrochloride, and adjusting pH of buffer solution to 8-8.5 by adding sodium hydroxide solution, (ii) preparing dopamine solution, adding tris(hydroxymethyl)aminomethane hydrochloride buffer solution, adjusting pH of dopamine solution to 8-8.5 to obtain graphene oxide/nanocellulose/polydopamine synthetic pearl layer, then soaking in dopamine solution for a period of time, taking out, washing and drying to obtain polydopamine-coated graphene oxide/nanocellulose/polydopamine synthetic pearl layer, and (iii) soaking step (ii) product in copper(II) nitrate solution, then slowly dropping monosodium phosphate solution under ultrasonic condition, soaking for a certain period of time, taking out, washing and drying to obtain final product. USE - The pearl layer material is useful in flexible energy device, super capacitors and other electronic device. ADVANTAGE - The method: solves the problem of poor mechanical properties and low electrical conductivity of the existing graphene oxide biomimetic materials; inherits and improves tensile strength of the material; and improves electrical conductivity of the material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for polydopamine-coated graphene oxide-based ternary man-made pearl layer material, prepared by above mentioned method, where the the electrical conductivity of the polydopamine-coated graphene oxide-based ternary man-made pearl layer material is 207.6 S/cm.