▎ 摘　　要

NOVELTY - device of this utility model claims a large-scale electrolysis for preparing graphene, comprising multiple electrolytic tanks arranged in parallel, each electrolytic cell containing electrolyte, in each electrolytic cell comprises a plurality of pairs of electrolytic electrode, each electrolytic electrode at least partially submerged in the electrolyte, which is used under the power supply for electrolytic reaction for preparing graphene. the device further comprises a plurality of cooling arranged in parallel, the plurality of cooling and the plurality of electrolyte are parallel to each other and are staggered, each cooling containing a cooling liquid for cooling the side wall of each electrolytic cell, wherein the plurality of cooling liquid are in fluid communication. a plurality of cooling of this utility model can effectively cool the plurality of electrolyser, so that it is in the proper temperature range, so as to effectively control the quality of the graphene product, and ensures the safety of the preparation process.