Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-electric-field-resistant high-energy-density barium titanate-based relaxor ferroelectric ceramic material and preparation method thereof

A high energy storage density, ferroelectric ceramic technology, applied in the field of capacitor material preparation, can solve the problems of remanent polarization, large coercive field, low effective energy storage density and energy storage efficiency, limitations, etc., and achieve high dielectric constant. , The effect of low equipment requirements and simple operation

Active Publication Date: 2020-01-03
SOUTHWEST UNIVERSITY
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Capacitors are widely used in pulse fields such as communication equipment, industrial instrument power supplies, and weapons because of their high power density. Among them, inorganic dielectric capacitors represented by ceramic dielectrics are simple in structure, high temperature resistance, corrosion resistance, low price and The preparation process is simple and has attracted much attention; and the ferroelectric ceramics typically represented by barium titanate, because of the high saturation polarization value and relative permittivity, make it a very potential matrix ceramic, but due to the ferroelectric Ceramics are generally limited by the shortcomings of remanent polarization, large coercive field, and low effective energy storage density and energy storage efficiency.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-electric-field-resistant high-energy-density barium titanate-based relaxor ferroelectric ceramic material and preparation method thereof
  • High-electric-field-resistant high-energy-density barium titanate-based relaxor ferroelectric ceramic material and preparation method thereof
  • High-electric-field-resistant high-energy-density barium titanate-based relaxor ferroelectric ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of a Barium Titanate-based Relaxor Ferroelectric Ceramic Material with High Electric Field Resistance and High Energy Storage Density

[0038] (0.65(Ba 0.98 Li 0.04 ) Ti 0.98 o 3 -0.35 (Sr 0.7 Bi 0.2 )TiO 3 ), the specific method is as follows:

[0039] (1) Weigh the raw material SrCO with a purity of more than 99% according to the molar ratio of 7:2:10 3 、 Bi 2 o 3 and TiO 2 , put into the ball mill tank after mixing the raw materials weighed, and add the ball milling solvent absolute ethanol (dehydrated alcohol and the above-mentioned added SrCO 3 、 Bi 2 o 3 and TiO 2 The volume ratio of the total volume is 2:1) and zirconia balls (zirconia balls and the above added SrCO 3 、 Bi 2 o 3 and TiO 2 The volume ratio of the total volume is 3:2, wherein the zirconia balls are composed of zirconia balls with a diameter of 10mm and a diameter of 5mm according to the number ratio of 1:2), after ball milling at a ball milling speed of 270r / min for 24 ...

Embodiment 2

[0052] Preparation of a Barium Titanate-based Relaxor Ferroelectric Ceramic Material with High Electric Field Resistance and High Energy Storage Density

[0053] (0.65(Ba 0.98 Li 0.04 ) Ti 0.98 o 3 -0.35 (Sr 0.7 Bi 0.2 )TiO 3 ), the specific method is as follows:

[0054] (1) Weigh the raw material SrCO with a purity of more than 99% according to the molar ratio of 7:2:10 3 、 Bi 2 o 3 and TiO 2 , put into the ball mill tank after mixing the raw materials weighed, and add the ball milling solvent absolute ethanol (dehydrated alcohol and the above-mentioned added SrCO 3 、 Bi 2 o 3 and TiO 2 The volume ratio of the total volume is 2:1) and zirconia balls (zirconia balls and the above added SrCO 3 、 Bi 2 o 3 and TiO 2 The volume ratio of the total volume is 3:2, wherein the zirconia balls are composed of zirconia balls with a diameter of 10mm and a diameter of 5mm according to the number ratio of 1:2), and ball milled at a ball milling speed of 330r / min for more t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a high-electric-field-resistant high-energy-density barium titanate-based relaxor ferroelectric ceramic material and a preparation method thereof, belonging to the technical field of capacitor material preparation. The chemical composition of the barium titanate-based relaxor ferroelectric ceramic material with high electric field resistance and high energy storage densityis 0.65 (Ba<0.98>Li<0.04>) Ti<0.98>O<3>-0.35 (Sr<0.7>Bi<0.2>)TiO<3>, and the barium titanate-based relaxor ferroelectric ceramic material with high electric field resistance and high energy storage density can resist a high electric field at room temperature and has a total energy storage density of 3.43 J / cm<3> and an effective energy storage density of 2.43 J / cm<3> at room temperature in an electric field with a density of 340 kV / cm; the energy storage efficiency of the material between 10 kV / cm and 340 kV / cm is larger than 70%; and the materials is prepared through solid-phase synthesis ata low temperature and has a high dielectric constant and a low sintering temperature, and the preparation method is easy to operate, low in equipment requirement, easily controllable in reaction conditions and good in repeatability.

Description

technical field [0001] The invention belongs to the technical field of capacitor material preparation, and in particular relates to a barium titanate-based relaxation ferroelectric ceramic material with high electric field resistance and high energy storage density and a preparation method thereof. Background technique [0002] Capacitors are widely used in pulse fields such as communication equipment, industrial instrument power supplies, and weapons because of their high power density. Among them, inorganic dielectric capacitors represented by ceramic dielectrics are simple in structure, high temperature resistance, corrosion resistance, low price and The preparation process is simple and has attracted much attention; and the ferroelectric ceramics typically represented by barium titanate, because of the high saturation polarization value and relative permittivity, make it a very potential matrix ceramic, but due to the ferroelectric Ceramics are generally limited by the s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C04B35/468
CPCC04B35/468C04B2235/77C04B2235/96C04B2235/442C04B2235/3298
Inventor 刘岗李洋严岩
Owner SOUTHWEST UNIVERSITY
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com