Strontium titanate-based ceramic material with high energy storage density and low dielectric loss and preparation method thereof

A high energy storage density, ceramic material technology, applied in the field of energy storage ceramics, can solve the problems of low saturation polarization, limited application, low energy storage density, etc., achieve uniform grain size distribution, fast and efficient drying, high storage capacity. The effect of energy density

Active Publication Date: 2017-12-15
SHAANXI UNIV OF SCI & TECH
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But SrTiO 3 The saturation polarization of ceramics is small and the energy storage density is low, which limits its application in actual production

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
  • Strontium titanate-based ceramic material with high energy storage density and low dielectric loss and preparation method thereof
  • Strontium titanate-based ceramic material with high energy storage density and low dielectric loss and preparation method thereof
  • Strontium titanate-based ceramic material with high energy storage density and low dielectric loss and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0049] (1-x)SrTiO of the present invention 3 -xBi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 The preparation method comprises the following steps:

[0050] (1) According to the chemical formula SrTiO 3 , will analyze pure SrCO 3 and TiO 2 Mix the ingredients evenly, then dry at 100°C, pass through a 120-mesh sieve, briquette, and then pre-fire at 1150-1200°C for 3-5 hours to obtain a blocky solid, then crush the blocky solid and pass through a 120-mesh sieve , to get SrTiO 3 Powder;

[0051] (2) According to the chemical formula Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 , will Bi 2 o 3 , La 2 o 3 、Na 2 CO 3 , Li 2 CO 3 、TiO 2 and ZrO 2 Carry out ingredients and mix evenly, then sieve and briquette, and then pre-calcine at 800-850°C for 3-4 hours to obtain a block solid, then crush the block solid and pass through a 120-mesh sieve to obtain Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 Powder;

[0052] (3) the SrTiO of s...

Embodiment 1

[0063] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -xBi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3, where x represents Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 Mole fraction, and x=0.1.

[0064] The preparation method of the above-mentioned strontium titanate-based ceramic material with high energy storage density and low dielectric loss comprises the following steps:

[0065] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 and TiO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 12 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1150°C for 5 hours to obtain a block solid, and then the block After the solid is crushed and passed through a 120-mesh sieve, the SrTiO 3 Powder;

[0066] (2) According to the chemical formula Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 Bi 2 o 3 , La 2 o 3 , Na ...

Embodiment 2

[0074] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -xBi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 , where x represents Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 Mole fraction, and x=0.2.

[0075] The preparation method of the above-mentioned strontium titanate-based ceramic material with high energy storage density and low dielectric loss comprises the following steps:

[0076] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 and TiO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 14 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1180°C for 4 hours to obtain a block solid, and then the block After the solid is crushed and passed through a 120-mesh sieve, the SrTiO 3 Powder;

[0077] (2) According to the chemical formula Bi 0.48 La 0.02 Na 0.48 Li 0.02 Ti 0.98 Zr 0.02 o 3 Bi 2 o 3 , La 2 o 3 、Na ...

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
strengthaaaaaaaaaa
energy densityaaaaaaaaaa
energy densityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a strontium titanate-based ceramic material with high energy storage density and low dielectric loss and a preparation method thereof. The method comprises the following steps: preparing materials according to a chemical formula which is expressed as (1-x)SrTiO[3-x]Bi0.48La0.02Na0.48Li0.02Ti0.98Zr0.02O3, mixing uniformly to obtain raw material powder, uniformly mixing organic solvents and emulsifiers, then adding the raw material powder, adhesives, dispersants and plasticizers, mixing uniformly, carrying out tape casting, then cutting and stacking, then pressurizing, discharging glue and sintering to obtain the strontium titanate-based ceramic material with high energy storage density and low dielectric loss. The ceramic material is simple in preparation process and mature in preparation technique, and is suitable for industrial production; the energy storage density calculated on the basis of ferroelectric hysteresis loop is 1.98-2.59j/cm<3>, the energy storage efficiency is 69-87%, and the electric field intensity is 200kV/cm or more; the ceramic material is excellent in energy storage characteristic and low in dielectric loss.

Description

technical field [0001] The invention belongs to the field of energy storage ceramics, in particular to a strontium titanate-based ceramic material with high energy storage density and low dielectric loss and a preparation method thereof. Background technique [0002] The miniaturization and integration of pulsed power systems require energy storage dielectric materials with high energy storage density and low dielectric loss. Energy storage ceramic capacitors have the advantages of fast charge and discharge speed, anti-cycle aging, good mechanical properties, and are suitable for extreme environments such as high temperature and high pressure. Further improving the energy storage density of energy storage ceramic materials while maintaining low dielectric loss is the research and development. The key to realizing the miniaturization of pulse components. Usually, the energy storage density of energy storage ceramic materials can be calculated by the hysteresis loop (P-E curv...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/47C04B35/622C04B35/626
CPCC04B35/47C04B35/622C04B35/62605C04B2235/3201C04B2235/3203C04B2235/3227C04B2235/3234C04B2235/3244C04B2235/3298C04B2235/6025C04B2235/656C04B2235/6567C04B2235/768C04B2235/782C04B2235/786
Inventor 杨海波闫非林营
Owner SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap