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Composite material with ultra-high dielectric constant, and preparation method and application thereof

A dielectric constant and composite material technology, applied in chemical instruments and methods, circuits, capacitors, etc., can solve problems such as difficulty in chip capacitors and complicated manufacturing processes

Inactive Publication Date: 2018-12-14
NORTHEASTERN UNIV
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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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  • Composite material with ultra-high dielectric constant, and preparation method and application thereof
  • Composite material with ultra-high dielectric constant, and preparation method and application thereof
  • Composite material with ultra-high dielectric constant, and preparation method and application thereof

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

The invention relates to a novel ultra-high dielectric constant composite material, and a preparation method and application thereof, the composite material is an oxide composite material formed by ann-type semiconducting metal oxide with a pn junction and a p-type semiconducting metal oxide, and the relative dielectric constant thereof is 105 or more. The invention also provides a preparation method of the ultra-high dielectric constant composite material, a physical or chemical method is applied to p-type semiconducting metal oxide powder and n-type semiconducting oxide powder, the pn junctions are formed between p-type oxide particles and n-type oxide particles, and the oxide particles with the pn junctions are pressed or sintered to form a novel 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 Applications(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
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