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Preparation method of graphene-CCTO-based ceramic composite dielectric material

A kind of CCTO and ceramic composite technology, which is applied in the field of laser processing technology and energy materials, can solve the problems of not improving the overall performance of CCTO materials and complex process, and achieve the effect of fine particles, low cost and good compactness

Inactive Publication Date: 2019-10-22
CHONGQING INST OF EAST CHINA NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these doping studies did not achieve the purpose of improving the overall performance of CCTO materials. Usually, it reduces the dielectric loss while also reducing the dielectric constant, or brings more technological advantages while improving the dielectric properties. complexity problem

Method used

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  • Preparation method of graphene-CCTO-based ceramic composite dielectric material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue stirring for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.03mol of Cu(NO 3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution. To prepare a solution containing calcium ions, a certain amount of Ca(CH 3 COO) 2 ·H 2 O, be dissolved in 40ml deionized water to obtain a solution containing calcium ions. Slowly add this solution dropwise to the aforementioned blue-green solution containing titan...

Embodiment 2

[0024] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue stirring for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.03mol of Cu(NO 3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution. To prepare a solution containing calcium ions, a certain amount of Ca(CH 3 COO)2 ·H 2 O, be dissolved in 40ml deionized water to obtain a solution containing calcium ions. Slowly add this solution dropwise to the aforementioned blue-green solution containing titaniu...

Embodiment 3

[0026] Using tetrabutyl titanate, copper nitrate, and calcium acetate as the precursor raw materials, with absolute ethanol and glacial acetic acid as the solvent, first weigh 0.04mol of tetrabutyl titanate, dissolve it in absolute ethanol, and stir with a glass rod Mix evenly, add glacial acetic acid, and continue stirring for 1 hour with a magnetic stirrer to prepare a precursor solution containing titanium ions, and weigh 0.03mol of Cu(NO 3 ) 2 ·3H 2 O, dissolved in absolute ethanol, stirred on a magnetic stirrer to a clear and transparent blue solution, and then this blue solution was added to the aforementioned precursor solution containing titanium ions to form a clear and transparent blue-green solution. To prepare a solution containing calcium ions, a certain amount of Ca(CH 3 COO) 2 ·H 2 O, be dissolved in 40ml deionized water to obtain a solution containing calcium ions. Slowly add this solution dropwise to the aforementioned blue-green solution containing titan...

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Abstract

The invention discloses a preparation method of a graphene-CCTO-based ceramic composite dielectric material. The preparation method comprises the following steps: dissolving a metal ion source component in a solvent and uniformly mixing to obtain a precursor sol of the CCTO-based ceramic material; leaving the precursor sol of the CCTO-based ceramic material to stand to age, adding a graphene oxidedispersion liquid, uniformly mixing the mixture, drying the mixture to obtain a precursor dry powder of the graphene-CCTO-based ceramic material, grinding the precursor dry powder of the graphene-CCTO-based ceramic material into a fine powder, and irradiating the fine powder by low power laser to obtain a graphene-CCTO-based ceramic composite powder; and compacting and forming the graphene-CCTO-based ceramic composite powder, and carrying out synthesis under high power laser to obtain the graphene-CCTO-based ceramic composite dielectric material. The composite dielectric material is small inparticles and relatively good in compactness, and has the characteristics of being huge in dielectric property and low in loss. The preparation method is low in cost, quick and efficient, and is suitable for large range application of the huge dielectric material in a high density storage apparatus.

Description

technical field [0001] The invention belongs to the field of laser processing technology and energy materials, and in particular relates to a fast laser sintering solid state electrolyte and a preparation method thereof. Background technique [0002] CCTO is a kind of giant dielectric constant ceramic material, in a wide frequency range and temperature range, the dielectric constant can reach 10 5 Above, with the rapid development of the electronic communication industry and the new energy industry, the research and development of the giant dielectric properties of CCTO has attracted more and more attention, especially in high-density storage devices, which has a broad application prospect. CCTO belongs to ABO 3 Type compounds, in which the A site is Ca and Cu, and the B site is Ti, which has a perovskite-like structure. Since it was proposed by Subramanian et al. in 2000 [M.A.Subramanian, D.Li, N.Duan, B.A.Reisner, A.Sleight, Highdielectric constant in ACaCu 3 Ti 4 o 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/462C04B35/622
CPCC04B35/462C04B35/622C04B2235/3208C04B2235/3281C04B2235/425C04B2235/66C04B2235/96C04B2235/3225C04B2235/3244C04B2235/3251C04B2235/3284C04B2235/3293C04B2235/3232C04B2235/441C04B2235/449C04B35/6264C04B35/62645C04B2235/665C04B2235/3224C04B35/62655C04B2235/604C04B35/63416C01G23/003C04B2235/401C04B2235/407C04B2235/422
Inventor 曾和平黄延伟贺嘉杨
Owner CHONGQING INST OF EAST CHINA NORMAL UNIV