A kind of preparation method of nano carbon electrode composite material

Abstract

The invention provides a preparation method of nanometer charcoal electrode composite material, which comprises the following steps: 1) weighing the raw materials by mass percent: 5%-10% of lithium salt, 50%-55% of ferric salt and 30%-40% of phosphate; adding the raw materials into a dispersant for ball milling in a bowl mill, and preparing a precursor; 2) throwing the prepared precursor into a 60-70 DEG C vacuum baking oven for drying 10-30 hours, and placing materials into an atmosphere protection tubular type vacuum furnace, and then letting nitrogen or argon in, and then letting methane gas in, keeping the pressure at 1.5-2.0 MPa; loading platinum or nickel catalyst on a carbon nano-tube by laser; 3) preparing the products obtained in the step 2) into dispersed powder, carrying out an equivalent-volume impregnation for the dispersed powder using phenolic resin-P123 macromolecule copolymer-ethyl orthosilicate and condensation fully, naturally cooling to room temperature, and preparing a nanometer charcoal electrode composite material. The method can prevent agglomeration phenomenon of the electrode material, and not only reduces cost, but also improves performance.

Description

technical field [0001] The invention belongs to the field of battery composite electrode materials, and relates to a preparation method of nano-carbon electrode materials. Background technique [0002] Hydrogen is the cleanest energy and an important industrial raw material, but the storage and transportation problems of hydrogen limit the wide application of hydrogen energy. Whether the vehicle-mounted hydrogen-oxygen fuel cell can be widely used in practice is also closely related to whether this problem can be solved. Research and development of hydrogen storage materials with excellent performance is one of the key ways to solve the storage and transportation of hydrogen energy. [0003] Lithium cobaltate, as the positive electrode material of lithium ion battery, shows excellent performance in the field of portable electronic products such as mobile phones, camcorders, notebook computers, digital cameras, media players, etc. serious safety hazard. Now the scientific ...

AI Technical Summary

Problems solved by technology

But in practical use, this method leads to unstable capacitance due to the change of film thickness

Lithium-ion battery slurry has very high solid content and high viscosity. It is difficult to fully disperse carbon nanotubes by this method

Therefore, the current method of using carbon nanotubes cannot give full play to its advantages. At the same time, due to the serious agglomeration of carbon nanotubes, the amount of raw materials has to be increased, which increases the cost and reduces the capacity of the composite material.