▎ 摘　　要

NOVELTY - Preparing graphene in large quantity under high pressure comprises (i) taking biocatalyst catalyst material, and dissolving or dispersing for ultrasonic vibration treatment to obtain the biocatalyst solution, (ii) taking the graphene oxide gel, adding the biocatalyst solution, performing ultrasonic vibration treatment to obtain the dispersion solution and magnetically stirring and pre-reducing the dispersing solution to obtain the pre-reducing solution mixed by graphene oxide gel and biocatalyst solution, (iii) taking the reducing material, and carrying out ultrasonic vibration treatment after dissolving it to obtain reducing solution, (iv) mixing the pre-reducing solution with the reducing solution, performing ultrasonic vibration treatment to obtain the mixed solution, and (v) placing the mixed solution in the pressure cooker for cooking, performing the second reduction, and repeatedly washing. USE - The material is useful for manufacturing electronic component in an electromagnetic shielding (claimed). ADVANTAGE - The method is simple, safe, has high yield, low cost, easy mass production, and is environmentally friendly. The material has good water dispersibility, and can be used to prepare conductive inks to prepare graphene electrode films with high conductivity and uniformity. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for reduced graphene oxide material prepared according to above mentioned method.