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

Strontium titanate-based lead-free high-energy storage density and high-energy storage efficiency ceramic material and preparation method thereof

A lead-free-based technology with high storage and energy storage efficiency is applied in the field of strontium titanate-based lead-free high-energy-storage-density and high-energy-storage-efficiency ceramic materials and their preparation fields, and can solve the problems of low energy storage density, low saturation polarization, Limiting applications and other issues, achieving high energy storage density, improving energy storage density and energy storage efficiency, and excellent energy storage characteristics

Active Publication Date: 2017-05-24
SHAANXI UNIV OF SCI & TECH
View PDF3 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

SrTiO 3 Ceramic is an excellent dielectric material with high dielectric constant, low dielectric loss, good temperature stability and high breakdown field strength, 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 lead-free high-energy storage density and high-energy storage efficiency ceramic material and preparation method thereof
  • Strontium titanate-based lead-free high-energy storage density and high-energy storage efficiency ceramic material and preparation method thereof
  • Strontium titanate-based lead-free high-energy storage density and high-energy storage efficiency ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] The preparation method of the high energy storage density and energy storage efficiency medium ceramic material of the present invention comprises the following steps:

[0056] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 、TiO 2 After preparation, use absolute ethanol as the medium, mix uniformly by ball milling, then dry at 100°C, pass through a 120-mesh sieve, briquette, and then pre-calcine at 1150-1200°C for 3-5 hours to obtain blocky solids, and then Crush the massive solid and pass through a 120-mesh sieve to obtain SrTiO 3 Powder;

[0057] (2) According to the chemical formula 0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 will analyze pure BaCO 3 、Na 2 CO 3 、 Bi 2 o 3 、TiO 2 After preparation, use absolute ethanol as the medium, mix evenly by ball milling, then dry at 100°C, pass through a 120-mesh sieve, briquette, and then pre-calcine at 900-950°C for 3-5 hours to obtain blocky solids, and then Crush the massive solid and pass thr...

Embodiment 1

[0069] The chemical formula of strontium titanate-based lead-free ceramic material with high energy storage density and high energy storage efficiency is: (1-x)SrTiO 3 -x(0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 ), where x is 0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 The mole percentage of , and x = 0.1.

[0070] The method for preparing the strontium titanate-based lead-free ceramic material with high energy storage density and high energy storage efficiency includes the following steps:

[0071] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 、TiO 2 After preparation, it is mixed uniformly by ball milling for 24 hours, then dried at 100°C, passed through a 120-mesh sieve, compacted, and then pre-fired at 1150°C for 4 hours to obtain a blocky solid, and then the blocky solid was crushed and passed through a 120-mesh sieve , to get SrTiO 3 Powder;

[0072] (2) According to the chemical formula 0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 will analyze pur...

Embodiment 2

[0079] The chemical formula of strontium titanate-based lead-free ceramic material with high energy storage density and high energy storage efficiency is: (1-x)SrTiO 3 -x(0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 ), where x is 0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 The mole percentage, and x = 0.2.

[0080] The method for preparing the strontium titanate-based lead-free ceramic material with high energy storage density and high energy storage efficiency includes the following steps:

[0081] (1) According to the chemical formula SrTiO 3 will analyze pure SrCO 3 、TiO 2 After preparation, it is mixed uniformly by ball milling for 23 hours, then dried at 100°C, passed through a 120-mesh sieve, briquetted, and then pre-fired at 1175°C for 4 hours to obtain a blocky solid, and then the blocky solid was crushed and passed through a 120-mesh sieve , to get SrTiO 3 Powder;

[0082] (2) According to the chemical formula 0.65BaTiO 3 -0.35Bi 0.5 Na 0.5 TiO 3 will analyze pure B...

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
Average grain sizeaaaaaaaaaa
Breakdown strengthaaaaaaaaaa
Energy storage densityaaaaaaaaaa
Login to View More

Abstract

The invention relates to a strontium titanate-based lead-free high-energy storage density and high-energy storage efficiency ceramic material and a preparation method thereof. The preparation method comprises the following steps: firstly batching according to a chemical formula (1-x)SrTiO3-x(0.65BaTiO3-0.35Bi0.5Na0.5TiO3), wherein x represents a molar fraction and is greater than or equal to 0.1 but less than or equal to 0.6; ball-milling and drying to obtain a raw material powder body; adding the obtained raw material powder body into a bonding agent for pelleting, decaying for 24-48 hours, pressing into a sheet, performing glue removal treatment and sintering at a temperature of 1250-1350 DEG C to obtain the strontium titanate-based lead-free high-energy storage density and high-energy storage efficiency ceramic material. The ceramic material provided by the invention is simple and stable in preparation process, suitable for industrial production and excellent in energy storage characteristics, the energy storage density calculated based on a ferroelectric hysteresis loop is 0.961-1.403 J / cm<3>, and the energy storage efficiency is 84.77-91.63 percent.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of dielectric materials for energy storage capacitors, in particular to a strontium titanate-based lead-free ceramic material with high energy storage density and high energy storage efficiency and a preparation method thereof. [0003] 【Background technique】 [0004] With the continuous development of information technology, the miniaturization and multi-functionalization of devices, ceramics with high energy storage density and high energy storage efficiency are the key materials for making small, large-capacity, and high-efficiency capacitors. Because high energy storage density ceramic capacitors have the advantages of high energy storage density, fast charge and discharge speed, anti-cycle aging, high mechanical strength, suitable for extreme environments such as high temperature and high pressure, and stable performance, they meet the requirements of new energy development and utilization, and a...

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): C04B35/47C04B35/622
CPCC04B35/47C04B35/622C04B2235/3201C04B2235/3213C04B2235/3215C04B2235/3232C04B2235/3236C04B2235/3298C04B2235/96
Inventor 杨海波闫非林营高淑雅朱建锋王芬
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