Barium titanate-based relaxor ferroelectric ceramic powder, ceramic and preparation method and application thereof

A barium titanate-based, ceramic powder technology, applied in the direction of circuits, capacitors, electrical components, etc., can solve the problems of low dielectric breakdown field strength, low maximum polarization strength, hindering practical applications, etc., and achieve dielectric shock Enhanced through-field strength, excellent current density, and suppression of remanent polarization

Active Publication Date: 2021-08-03
LIAOCHENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, barium titanate-based relaxor ferroelectric ceramics still suffer from low energy storage density due to its low maximum polarization and low dielectric breakdown field strength, which seriously hinders its practical application.
In addition, the charge and discharge characteristics of dielectric energy storage ceramic materials (such as discharge rate, power density, and current density, etc.) are indispensable for practical applications, but are often ignored

Method used

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  • Barium titanate-based relaxor ferroelectric ceramic powder, ceramic and preparation method and application thereof
  • Barium titanate-based relaxor ferroelectric ceramic powder, ceramic and preparation method and application thereof
  • Barium titanate-based relaxor ferroelectric ceramic powder, ceramic and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Preparation (1-Z) (Ba 1-x CA x (Ti) 1-y SN y ) O 3 -ZBi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3 , X = 0, y = 0, z = 0.13 Take the material, the raw material selection Baco 3 , TIO 2 , BI 2 O 3 , ZnO, NB 2 O 5 , TA 2 O 5 , 0.87batio according to chemistry 3 -0.13bi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3The chemometrics ratio of BA, Ti, Bi, Zn, Nb and TA elements weigh the raw materials, and the raw material weighing is placed in the ball mill, and zirconia balls and anhydrous ethanol are added to the ball mill, and the ball milling for 16 h. After drying in an oven (80 ° C, 4H), a mixed powder A is obtained, wherein the mass ratio of the anhydrous ethanol and the feedstock is 3: 1; the mass ratio of zirconia balls and raw materials used in the ball mill is 2: 1. The mixed powder A is placed in the alumina crucible, the pre-feeding temperature is 850 ° C, the temperature rise rate is 3 ° C / min, after 4 hours, naturally cooled to obtain a pre-feeding powder B. After the pre-feeti...

Embodiment 2

[0099] Preparation (1-Z) (Ba 1-x CA x (Ti) 1-y SN y ) O 3 -ZBi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3 , X = 0.05, y = 0.09, z = 0.13 Take the raw material to select Baco 3 Caco 3 , TIO 2 SNO 2 , BI 2 O 3 , ZnO, NB 2 O 5 , TA 2 O 5 Press Formula 0.87 (BA 0.95 CA 0.05 (Ti) 0.91 SN 0.09 ) O 3 -0.13bi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3 The medium element ratio is referred to as the selected raw material, the pre-feeding temperature is 850 ° C, and the insulation temperature of the ceramic embgeject after the discharge treatment is 1200 ° C, and the upper and lower sides of the sintered ceramic sheet are grinded to a thickness of 0.20 mm, and then The silver-plated electrode, the silver electrode has a diameter of 2.1 mm, and the remaining experimental conditions and examples are consistent.

[0100] It can be seen that the final sample obtained in this embodiment is 0.87 (BA) of the relaxed iron power storage ceramic material in the present invention. 0.95 CA 0.05 (Ti) 0.91 SN 0.09 ) ...

Embodiment 3

[0102] Preparation (1-Z) (Ba 1-x CA x (Ti) 1-y SN y ) O 3 -ZBi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3, X = 0.05, y = 0.03, z = 0.12 Take the material, the raw material selection Baco 3 Caco 3 , TIO 2 SNO 2 , BI 2 O 3 , ZnO, NB 2 O 5 , TA 2 O 5 , According to the formula 0.88 (Ba 0.95 CA 0.05 (Ti) 0.97 SN 0.03 ) O 3 -0.12bi (Zn 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3 The medium element ratio is called the selected raw material, the pre-feet temperature is 1000 ° C, the insulation temperature of the ceramic embgeject after the disc bonding treatment is 1170 ° C, and the upper and lower sides of the sintered ceramic sheet are grinded to a thickness of 0.30 mm, and then The gold plating electrode, the diameter of the gold electrode is 2 mm, and 20 min at 250 ° C, the remaining experimental conditions and the first embodiment are consistent.

[0103] It is understood that the final sample obtained in this embodiment is 0.88 (Ba) relaxed iron power storage ceramic material in the present inventi...

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Abstract

The invention provides barium titanate-based relaxor ferroelectric ceramic powder, ceramic and a preparation method and application thereof, the chemical general formula of the ceramic powder is (1-z) (Ba1-xCax) (Ti1-ySny) O3-zBi (Zn2/3 (Nb0.85Ta0.15) 1/3) O3, 0 < = x < = 0.05, 0 < = y < = 0.09, and 0.1 < = z < = 0.15. The ceramic powder is obtained by adopting a traditional solid-phase ceramic preparation technology and industrial raw materials, the sintering temperature of the ceramic can be reduced to 1150 DEG C, the discharging speed t0.9 of the material is 24 ns, the charging and discharging speed is extremely high, and the ceramic powder belongs to a novel lead-free energy storage ceramic capacitor material. The barium titanate-based relaxor ferroelectric ceramic has ultra-fast charging and discharging capacity and high power density, and has wide application prospects in the fields of pulse power equipment, high-power capacitors, directional energy weapons and the like.

Description

Technical field [0001] The present invention relates to the field of energy storage ceramic materials, and more particularly to a barium titanate, ceramic, and preparation method and application thereof, with BI (Zn) 2 / 3 (NB 0.85 TA 0.15 ) 1 / 3 ) O 3 As the second component, there is a fast discharge capability and a high storage energy density. Background technique [0002] Energy is an important substance foundation for human society to survive and develop. With the rapid development of the world economy and human society, energy and environmental problems have become increasingly prominent, and people have stimulated people to develop clean and renewable energy technologies. Lead-free dielectric capacitor is a typical environmentally friendly dielectric material, compared to battery, fuel cell, electrochemical capacitor and supercapacitor due to its high cycle life (~ 50,000) and security, super fast Charge and discharge rate (<1 μs) and high power density (~ 10 8 W / kg) ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/626C04B35/622C04B35/64C04B41/88H01G4/12
CPCC04B35/4682C04B35/62605C04B35/622C04B35/64C04B41/88C04B41/5116H01G4/1227C04B2235/3208C04B2235/3293C04B2235/3298C04B2235/3284C04B2235/3251C04B2235/656C04B2235/6567C04B41/0072
Inventor 李伟孙铭泽张玉洁周晓晓任梦宇唐旭郝继功
Owner LIAOCHENG UNIV
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