PREPARATION METHOD OF THREE-DIMENSIONAL CARBON NANOTUBE/NITROGEN-DOPED GRAPHENE/SULFUR ELECTRODE SLICE

摘要

sb /sb /sb /A three-dimensional carbon nanotube/nitrogen-doped graphene/sulfur electrode slice comprises the following steps of: step (1): adding carbon nanotubes, graphite oxide and polyacrylonitrile to N-methyl pyrrolidone, performing ultrasonic treatment, coating an aluminium foil with mixed slurry, and performing vacuum drying to obtain an electrode slice; step (2): putting the obtained electrode slice into a muffle furnace under the protection of ammonia gas, heating to 400-500℃, and naturally cooling; and step (3): completely inserting the electrode slice obtained in the step (2) into a Na2S2O3 solution, and slowly dropwise adding hydrochloric acid to the solution until the PH value of the solution reaches 6.5-7.5, and then taking out the electrode slice, and drying the electrode slice to obtain a positive plate. The prepared electrode slice can be directly applied to the positive electrode of a lithium-sulfur battery without adding a conductive agent and a binder, thus greatly lowering the cost of the electrode.