▎ 摘　　要

NOVELTY - Preparing graphene by electrolysis involves starting the pump under the condition of controlling the temperature of the electrolyte in the electrolytic cell to push the electrolyte to flow and reach the required temperature, applying the required current or voltage between the positive electrode and the negative electrode in the electrolytic cell. The graphene is peeled off from the graphite electrode and enters the electrolyte to obtain product. USE - Method for preparing graphene by electrolysis used in lead-acid battery and in electronic, information, material and biological medicine. ADVANTAGE - The method improves the positive and negative electrode active material performance of the lead-acid battery and cycle life of the lead-acid battery, inhibits the lead-acid battery negative electrode, in simple, eco-friendly and cost-effective manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a device for preparing graphite, which comprises a positive electrode, negative electrode and a pump, where the positive electrode and the first isolating film form a positive electrode chamber, the first isolating film and the second isolating film form a product chamber, the negative electrode and the second isolating film are surrounded with a negative electrode chamber, the positive electrode the product chamber, the negative electrode chamber and the corresponding pipeline are full of electrolyte solution, the pump is used for pushing the electrolyte solution, one of the positive electrode and the negative electrode is a graphite electrode or is a graphite electrode.