Preparation method of sodium lithium battery cathode material as well as product and application thereof

The invention belongs to the field of sodium ion batteries and in particular relates to a preparation method of a sodium lithium battery cathode material as well as a product and an application thereof. The preparation method comprises the following steps: (1) preparing a graphene oxide aqueous solution and adding sodium humate into the graphene oxide aqueous solution in a certain charge ratio; and (2) stirring and drying the solution, and performing a reduction reaction in hydrogen or a mixed gas atmosphere of hydrogen and inert gas to obtain the sodium lithium battery cathode material. The cathode material can be used for preparing a corresponding positive pole piece which is further applied to the sodium ion battery. The cathode material has an excellent electrochemical property, good specific discharge capacity and rate capability, and the preparation method is simple, commercialized sodium humate can be directly used, and the method is mild in operating condition and easy to realize industrialization. 本发