| abstract |
The invention belongs to the technical field of lithium-sulfur batteries, and particularly relates to a lithium-sulfur battery positive electrode material and a preparation method thereof. The anode material is a cobaltosic oxide double-layer hollow sphere-carbon nanotube-sulfur composite material. The positive electrode material has higher specific capacity under high current density and good cycle life. According to the preparation method, the cobaltosic oxide double-layer hollow spheres are coated by the carbon nano tubes in a spray drying mode, so that the optimal coating effect can be achieved, the conductivity of the material is improved, the structural stability of the cobaltosic oxide spheres is enhanced through the coating support of the carbon nano tubes, and the material has the optimal adsorption effect. |