| abstract |
The invention belongs to the technical field of zinc ion batteries, in particular to an aqueous zinc ion battery based on manganese dioxide/graphene and a preparation method thereof. The zinc ion battery of the present invention uses the carbon nanotube fiber uniformly loaded with manganese dioxide/reduced graphene oxide composite material as the positive electrode, the fibrous zinc wire as the negative electrode, and the surfaces of the two electrodes are evenly coated with gel electrolyte and then entangled with each other to form a winding structure The preparation steps include: preparation of graphene oxide dispersion, preparation of fibrous manganese dioxide/reduced graphene oxide positive electrode, and assembly of fibrous water-based rechargeable zinc ion battery. Among them, the manganese dioxide/reduced graphene oxide composite material has a three-dimensional network skeleton structure with high electrical conductivity, which can increase the contact area between the current collector and the active material, reduce the contact resistance, improve the performance of the fibrous battery, and prolong the fibrous battery. life. The fiber battery is incorporated into the fabric, and wearable electronic devices with excellent performance can be prepared. |