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A kind of ultra-high dielectric constant composite material, its preparation method and application

A technology of dielectric constant and composite materials, applied in chemical instruments and methods, circuits, capacitors, etc., can solve problems such as complex manufacturing process and difficulty in chip capacitors

Inactive Publication Date: 2021-03-26
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manufacturing process of the above two capacitors is relatively complicated, and it is still difficult to make a chip capacitor

Method used

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  • A kind of ultra-high dielectric constant composite material, its preparation method and application
  • A kind of ultra-high dielectric constant composite material, its preparation method and application
  • A kind of ultra-high dielectric constant composite material, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Composite materials with ultrahigh dielectric constant were prepared by chemical liquid phase precipitation, in which MnO 2 The synthesis of according to the chemical reaction equation:

[0058] MnSO 4 +H 2 o 2 +2NaOH=MnO 2 +2H 2 O+Na 2 SO 4

[0059] To be done.

[0060] The specific operation is as follows:

[0061] (1) First, 4.66g BaTiO 3 powder in H 2 Heat treatment at 900°C in air for 8 hours to make it semi-conductive.

[0062] (2) The composite material with pn junction was obtained by in situ synthesis. Weigh 1.6g NaOH and put it into a beaker, add 200ml deionized water to dissolve; 3 The powder was transferred to the prepared NaOH solution, stirred vigorously and heated to 60°C as the base liquid. Weigh 3.38gMnSO 4 ·H 2 O, put it into a small beaker, add 50mlH 2 O and 5ml 30% HO 2 o 2 Let it dissolve to form a titration solution. Add the titrant solution dropwise to the base solution, keep at 60°C and stir vigorously. After the titration is ...

Embodiment 2

[0070]Composite materials with ultrahigh dielectric constant were prepared by chemical liquid phase precipitation, in which MnO 2 The synthesis of according to the chemical reaction equation:

[0071] 2KMnO 4 +4NaOH+3MnSO 4 =5MnO 2 +2H 2 O+2Na 2 SO 4 +K 2 SO 4

[0072] To be done.

[0073] (1), first 4.66gBaTiO 3 powder in H 2 Heat treatment at 900°C for 8 hours in air.

[0074] (2) The composite material with pn junction is obtained by in-situ synthesis method. Weigh 1.58g KMnO 4 and 0.8gNaOH into a beaker, add 200mlH 2 O dissolved, the semiconducting BaTiO 3 The powder was transferred to the prepared above solution, vigorously stirred and heated to 70°C as the base liquid. Weigh 2.54g MnSO 4 ·H 2 O, put it into a small beaker, add 50ml H 2 O dissolves it to form a titrant. The titration solution was added dropwise to the base solution, kept at 70°C and vigorously stirred, and a dark brown precipitate was obtained after the titration was completed. After ...

Embodiment 3

[0077] Composite materials with ultrahigh dielectric constant were prepared by chemical liquid phase precipitation, in which MnO 2 The synthesis of according to the chemical reaction equation:

[0078] MnSO 4 +H 2 o 2 +2NaOH=MnO 2 +2H 2 O+Na 2 SO 4 To be done.

[0079] The specific operation is as follows:

[0080] (1) First, 3.07g BaTiO 3 powder in H 2 Heat treatment at 900°C in air for 8 hours to make it semi-conductive.

[0081] (2) The composite material with pn junction was obtained by in situ synthesis. Weigh 1.6g NaOH and put it into a beaker, add 200ml deionized water to dissolve; 3 The powder was transferred to the prepared NaOH solution, stirred vigorously and heated to 60°C as the base liquid. Weigh 3.38gMnSO 4 ·H 2 O, put it into a small beaker, add 50mlH 2 O and 5ml 30% HO 2 o 2 Let it dissolve to form a titration solution. Add the titrant solution dropwise to the base solution, keep at 60°C and stir vigorously. After the titration is completed...

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Abstract

Provided is a composite material with a ultra-high dielectric constant. The material is an oxide composite material formed from an n-type semiconducting metal oxide and a p-type semiconducting metal oxide having a pn junction, and the relative dielectric constant thereof is 105 or more. The preparation method of the composite material with a ultra-high dielectric constant comprises applying a physical or chemical method to a p-type semiconducting metal oxide powder and an n-type semiconducting oxide powder, and forming a pn junction between a p-type oxide particle and an n-type oxide particle. The oxide particles having a pn junction are pressed or sintered to form a composite material with an ultra-high dielectric constant.

Description

technical field [0001] The invention relates to a novel ultrahigh dielectric constant composite material, its preparation method and application, and belongs to the technical field of high dielectric material preparation. Background technique [0002] Capacitors are indispensable electronic components in the modern electronics industry. How to reduce the volume of electronic components, increase the capacity of capacitors, and realize surface mounting are important topics in capacitor research. In addition to the problem of component structure, the improvement of the dielectric properties of dielectric materials has always been the goal of material research, and the improvement of dielectric constant is the most important research direction. Electrolytic capacitor is a kind of capacitor, the metal foil (aluminum or tantalum) is the positive electrode, the oxide film (aluminum oxide or tantalum pentoxide) close to the metal is the dielectric, and the negative electrode is mad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/04H01G9/042H01G9/045C01G9/02C01G23/00C01G45/02
CPCC01G9/02C01G23/006C01G45/02H01G9/04H01G9/042H01G9/045
Inventor 齐建全汪晋宽马振伟张圆喜张琴琴李梦莹
Owner NORTHEASTERN UNIV LIAONING
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