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

Lead-free multi-layer ceramic material with high energy storage density and preparation method thereof

A technology of high energy storage density and ceramic materials, applied in the field of energy storage ceramics, can solve the problems of the breakdown electric field intensity and energy storage characteristics to be improved, low energy storage density of the base material, and small breakdown electric field intensity, etc., and shorten the drying time. Time, high solid content, fast and efficient drying effect

Active Publication Date: 2018-10-12
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But SrTiO 3 The maximum polarization strength of ceramics is small and the energy storage density is low, which limits its application in actual production
Bi 0.5 Na 0.5 TiO 3 As a typical lead-free dielectric and ferroelectric material, the base material has a high maximum polarization strength and a low dielectric loss value, but the breakdown electric field strength is relatively small, which also makes Bi 0.5 Na 0.5 TiO 3 The energy storage density of the base material is low
[0008] At present, the breakdown electric field strength and energy storage characteristics of lead-free ceramic materials need to be improved

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
  • Lead-free multi-layer ceramic material with high energy storage density and preparation method thereof
  • Lead-free multi-layer ceramic material with high energy storage density and preparation method thereof
  • Lead-free multi-layer ceramic material with high energy storage density and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0038] The preparation method of the lead-free multilayer high energy storage density ceramic material of the present invention comprises the following steps:

[0039] (1) According to the chemical formula SrTiO 3 Carry out batching and mix homogeneously, obtain SrTiO 3 powder, and then to the obtained SrTiO 3 Add Li to the powder 2 CO 3 , to get M powder, where M is SrTiO 3 +0.5wt%Li 2 CO 3 Li 2 CO 3 The amount added is SrTiO 3 0.5% of powder mass;

[0040] (2) According to the chemical formula 0.94Bi 0.54 Na 0.46 TiO 3 -0.06BaTiO 3 , Bi 0.4 La 0.1 (Na 0.82 K 0.18 ) 0.5 Ti 0.96 Zr 0.02 sn 0.02 o 3 , 0.93 Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Carry out batching separately and mix uniformly, obtain corresponding N powder, wherein N is 0.94Bi 0.54 Na 0.46 TiO 3 -0.06BaTiO 3 , Bi 0.4 La 0.1 (Na 0.82 K 0.18 ) 0.5 Ti 0.96 Zr 0.02 sn 0.02 o 3 , 0.93 Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ...

Embodiment 1

[0052] A kind of lead-free multilayer high energy storage density ceramic material, its chemical formula is: (SrTiO 3 +0.5wt%Li 2 CO 3 ) / (0.94Bi 0.54 Na 0.46 TiO 3 -0.06BaTiO 3 ).

[0053] The preparation method of the above-mentioned lead-free multilayer high energy storage density ceramic material comprises the following steps:

[0054] (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; then to the obtained SrTiO 3 Add Li to the powder 2 CO 3 , Li 2 CO 3 The mass of SrTiO3 0.5% of the mass; use absolute ethanol as the medium, mix evenly by ball milling for 12 hours, then dry at 100°C and pass through a 120-mesh ...

Embodiment 2

[0066] A kind of lead-free multilayer high energy storage density ceramic material, its chemical formula is: (SrTiO 3 +0.5wt%Li 2 CO 3 ) / (0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ).

[0067] The preparation method of the above-mentioned lead-free multilayer high energy storage density ceramic material comprises the following steps:

[0068] (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; then to the obtained SrTiO 3 Add Li to the powder 2 CO 3 , Li 2 CO 3 The mass of SrTiO 3 0.5% of the mass; use absolute ethanol as the medium, mix evenly by ball milling for 16 hours, then dry at 10...

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
Breakdown strengthaaaaaaaaaa
Energy storage densityaaaaaaaaaa
Breakdown strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a lead-free multi-layer ceramic material with high energy storage density and a preparation method thereof. The preparation method comprises the following steps of uniformly mixing an organic solvent and an emulsifier; adding powder, an adhesive, a dispersant and a plasticizer, and uniformly mixing, so as to obtain a first tape casting slurry, wherein the powder is a mixture of SrTiO3 (strontium titanate) powder and Li2CO3 (lithium carbonate); uniformly mixing the organic solvent and the emulsifier, adding powder, an adhesive, a dispersant and a plasticizer, and uniformly mixing, so as to obtain a second tape casting slurry; respectively performing tape casting and forming the first tape casting slurry and the second tape casting slurry in a tape casting and forming way, so as to obtain a first tape casting layer or a second tape casting layer; then, overlapping, pressurizing, discharging glue, sintering and forming ceramic, so as to obtain the lead-free multi-layer ceramic material with high energy storage density. The lead-free multi-layer ceramic material has the advantages that the preparation technology is simple, the technique is matured, and the lead-free multi-layer ceramic material is suitable for industrialized production; the energy storage density which is calculated on the basis of a ferroelectric hysteresis loop can reach 2.72J / cm<3>, andthe intensity of an electric field can reach 200kV / cm or above.

Description

technical field [0001] The invention belongs to the field of energy storage ceramics, in particular to a lead-free multilayer ceramic material with high energy storage density and a preparation method thereof. Background technique [0002] Pulse power technology is a multi-disciplinary cross-integrated emerging technology field that emerged in the 1960s. It has many advantages such as high voltage, high current, and strong pulse. Electrophysical technology for delivering electrical energy to loads at extremely high power densities. Pulse power technology has been widely used in lasers, ion beams, weapons, high-power microwaves and other equipment. However, the materials used in most of the existing pulse power capacitors contain lead elements that pollute the environment and endanger human health, and lead-free materials have low energy storage density due to low breakdown electric field strength or low maximum polarization strength, which is difficult to meet The pulse po...

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): C04B35/475C04B35/47C04B35/622C04B35/632
CPCC04B35/47C04B35/475C04B35/622C04B35/632C04B2235/3201C04B2235/3203C04B2235/3215C04B2235/3227C04B2235/3234C04B2235/3236C04B2235/3244C04B2235/3293
Inventor 杨海波邱云闫非林营
Owner SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com