Co3O4/CC wave-absorbing material with needle-shaped structure and preparation method of Co3O4/CC wave-absorbing material

The invention belongs to the technical field of wave-absorbing materials, and particularly relates to a Co3O4/CC wave-absorbing material with a needle-shaped structure and a preparation method of the Co3O4/CC wave-absorbing material. The Co3O4/CC wave-absorbing material with a needle-shaped structure is prepared by taking cobalt chloride (cobalt nitrate and cobalt sulfate) as metal salt, urea as a precipitator and ammonium fluoride as a reducing agent, so that the Co3O4/CC wave-absorbing material with the needle-shaped structure is efficiently absorbed by the Co3O4/CC wave-absorbing material. The needle-like Co3O4/CC wave-absorbing material is prepared by adopting a hydrothermal synthesis method and a heat treatment process, and the preparation method is simple to operate, easy to regulate and control and short in synthesis period. Besides, the Co3O4/CC wave-absorbing material is formed by coating hydrophilic carbon cloth with acicular Co3O4, the morphology of the Co3O4 is adjusted by changing the molar conce