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Preparation method of composite ceramic capacitor material

A technology of composite ceramics and capacitors, which is applied to the parts of fixed capacitors, fixed capacitor dielectrics, etc., can solve the problems of increased dielectric loss, easy to generate high temperature, and poor multiplier characteristics of capacitor materials, so as to increase specific capacitance and DC resistance. rate effect

Inactive Publication Date: 2018-09-21
郦璋
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  • Abstract
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  • Application Information

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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

Method used

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  • Preparation method of composite ceramic capacitor material

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Embodiment Construction

[0027]In terms of parts by weight, dissolve 3-4 parts of citric acid in 10-12 parts of ethylene glycol, heat up to 80-90°C to obtain a mixed solution, and then use 0.5-1.0 parts of tetrabutyl titanate with 5- Dilute with 7 parts of absolute ethanol, add to the mixed solution and stir for 2.0-2.5 hours to obtain a compound solution. After the above-mentioned compound solution is cooled to 40-50°C, continue to drop 13-15 parts of Barium acetate solution, stirred and reacted for 1.0-1.5 hours, followed by adding 3-4 parts of calcium nitrate solution with a mass fraction of 10%, and 0.5-0.8 parts of a zirconium nitrate solution with a mass fraction of 20%, and mixed to obtain a polymer precursor; Put the above polymer precursor in a blast dryer with a set temperature of 100-120°C, dry for 7-8 hours to obtain a gel, and coke the gel in a muffle furnace with a temperature of 450-500°C for 4-4~ 5h, to obtain a black foam, grind the black foam to a particle size of 20-25μm, put it int...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/52C04B35/622H01G4/12
CPCC04B35/01C04B35/522C04B35/622C04B2235/3208C04B2235/3215C04B2235/3244C04B2235/3275C04B2235/3279C04B2235/405H01G4/12
Inventor 郦璋邓博陈帅
Owner 郦璋
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