Preparation method of composite ceramic capacitor material

Abstract

The invention relates to the technical field of capacitor material preparation, in particular to a preparation method of a composite ceramic capacitor material. A polymer is processed to obtain iron / cobalt nano powder, finally, a porous nickel cobalt oxide / graphene capacitor material, iron / cobalt nano powder of a core-shell structure and nano powder are mixed and then subjected to high-speed dispersion treatment, and the composite ceramic capacitor material is obtained through die filling, discharge plasma sintering and de-molding. Compared with a simple iron substance, the reaction activity of a simple cobalt substance with oxygen is low, iron powder can be protected against oxidization, and the direct-current electrical resistivity of the composite ceramic capacitor material at a high temperature is improved. Tetrabutyl titanate and citric acid are subjected to a complex reaction to form a network structure so that the rate capacity of the prepared capacitor material can be improved;the iron / cobalt nano powder of the core-shell structure serves as a soft magnetic phase of the capacitor material, so that the bonding force of a magnetic material is enhanced, the heat conductivitycoefficient of the magnetic material can be reduced, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of capacitor material preparation, in particular to a method for preparing a composite ceramic capacitor material. Background technique [0002] Since the beginning of the 21st century, human society is facing the severe challenges of energy crisis and environmental pollution. Countries and energy researchers around the world are constantly seeking cleaner green energy. Environmentally-friendly electric vehicles such as new chemical and physical power sources as power sources have set off a technological upsurge in the world. [0003] Supercapacitor is a new type of energy storage device between batteries and traditional capacitors. It has the characteristics of short charging time, long service life, good temperature characteristics, energy saving and environmental protection. It has attracted widespread attention and has broad The application prospects of the supercapacitor, and the electrode material is ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention is that activated carbon has the advantages of large specific surface area and adjustable pore structure as an electrode material at present. However, activated carbon only has electric double layer capacitance, and the specific capacitance is still low. In addition, electric leakage will inevitably occur due to the capacitance material , easy to generate high temperature, high temperature will reduce the DC resistivity of the capacitor material, increase the dielectric loss, and lead to the defect that the rate characteristic of the capacitor material is poor, and a preparation method of a composite ceramic capacitor material is provided

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