Graphene preparation method, graphene, graphene-graphite composite film, graphene ab paste and application

Abstract

The application provides a preparation method of graphene, and belongs to the technical field of graphene. The application comprises the following steps: step 1: preparing an electrolysis environment required by an electrolysis experiment: a graphite electrode, a prepared electrolyte, and a low-temperature environment; step 2: inserting the graphite electrolysis into the electrolyte with a proper electrode spacing and connecting a direct-current power supply, and waiting for a period of time to observe the stability; step 3: placing the electrolysis device built in step 2 into a low-temperature constant-temperature tank, setting a low-temperature temperature and a constant time, taking out part of the electrolysis slurry at a time for freeze-drying and then testing XRD, judging the quality of the graphene slurry, and obtaining graphene slurry with a 1-3 layer content of more than 70%; and step 4: obtaining graphene dry material after collecting and purifying the graphene slurry in step 3, namely graphene. The application prepares graphene by a low-temperature electrolysis experiment, so that more graphene can be prepared.

Images