▎ 摘　　要

NOVELTY - A carbon fiber/three-dimensional net-like graphene composite material preparing method involves weighing polyvinyl alcohol solid, adding water, warming and stirring to obtain polyvinyl alcohol solution and dissolving potassium hydroxide solids in water, mixing with polyvinyl alcohol solution and stirring to obtain polyvinyl alcohol-potassium hydroxide solution, and mixing glucose powder and nickel acetate to obtain mixture. The mixture is mixed with polyvinyl alcohol-potassium hydroxide solution, coated on a carbon fiber paper, annealed, washed and dried to obtain the finished product. USE - Method for preparing carbon fiber/three-dimensional net-like graphene composite material for use as cathode material of a super capacitor, and conductive base material to prepare composite electrode material. ADVANTAGE - The method enables preparing carbon fiber/three-dimensional net-like graphene composite material with high specific surface area, fast transmission of electronic and electrolyte ions and increased capacitive energy. DETAILED DESCRIPTION - A carbon fiber/three-dimensional net-like graphene composite material preparing method involves weighing 0-6 g polyvinyl alcohol solid, adding 30 ml distilled water, warming upto 70-90 degrees C and stirring to dissolve to obtain polyvinyl alcohol solution, and dissolving 10-30 ml potassium hydroxide solids in distilled water, mixing with polyvinyl alcohol solution and stirring at 60-80 degrees C for 10-300 minutes to obtain polyvinyl alcohol-potassium hydroxide solution, weighing 0.1-5 g glucose powder, 0.01-1.5 g red phosphorus and 0.01-1 g nickel acetate, adding 20-30 ml distilled water, mixing, stirring at 50-80 degrees C for 10-300 minutes, until the solution is viscous to obtain mixture of glucose-red phosphorus-nickel acetate. The mixture is mixed with polyvinyl alcohol-potassium hydroxide solution and stirred uniformly to obtain a mixed slurry. The mixed slurry is coated on a carbon fiber paper or polyacrylonitrile fiber membrane with a coating thickness of 10-30 mu m, transferred to a tube furnace, annealed in an argon atmosphere, washed with deionized water and dried to obtain the finished product.