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Barium strontium titanate-based ceramic material as well as preparation method and application thereof

A ceramic material, strontium-barium-based technology, applied in the field of strontium-barium titanate-based ceramic materials and its preparation, can solve the problems of energy storage performance to be improved

Inactive Publication Date: 2020-08-04
XIAN TECHNOLOGICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But (Ba,Sr)TiO 3 The energy storage performance still needs to be improved

Method used

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  • Barium strontium titanate-based ceramic material as well as preparation method and application thereof
  • Barium strontium titanate-based ceramic material as well as preparation method and application thereof
  • Barium strontium titanate-based ceramic material as well as preparation method and application thereof

Examples

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preparation example Construction

[0028] The present invention provides a method for preparing the strontium barium titanate-based ceramic material described in the above technical solution, comprising the following steps:

[0029] BaCO 3 、 Bi 2 o 3 , Nb 2 o 5 , MgO, SrCO 3 and TiO 2According to the chemical composition of the barium strontium titanate-based ceramic material, the first ball milling, calcining, second ball milling, granulation and tableting, debinding and sintering are carried out sequentially to obtain the barium strontium titanate-based ceramic material.

[0030] The present invention will BaCO 3 、 Bi 2 o 3 , Nb 2 o 5 , MgO, SrCO 3 and TiO 2 Mixing ingredients according to the chemical composition of the barium strontium titanate-based ceramic material to obtain a mixed raw material. In the present invention, according to the chemical composition of the barium strontium titanate-based ceramic material, the mass of each raw material is weighed by an electronic balance, and the ele...

Embodiment 1

[0043] The composition of barium strontium titanate based ceramic material is 0.92Ba 0.8 Sr 0.2 TiO 3 -0.08Bi(Mg 2 / 3 Nb 1 / 3 )O 3 , the preparation method comprises the following steps:

[0044] (1) Ingredients: BaCO is calculated according to the formula ratio 3 、 Bi 2 o 3 , Nb 2 o 5 , MgO, SrCO 3 and TiO 2 The required quality of each raw material is weighed with a precision electronic balance, and the electronic balance is calibrated and cleared before the use of the electronic balance, and the reading error is 5 / 1000;

[0045] (2) Primary ball milling: according to the mass ratio of zirconium balls, ethanol and medicine (i.e. the mixture of each raw material) is 2:1:1, put them into the grinding tank, set the speed of the ball mill to 400rpm, and mill for 4 hours. Zirconium balls are separated, and the obtained slurry is dried at 80°C to obtain a ball mill mixture;

[0046] (3) Pre-burning: add the ball mill mixture into the crucible, after compaction, place it...

Embodiment 2

[0052] Prepare strontium barium titanate based ceramic material according to the method of Example 1, the difference is that the chemical composition of strontium barium titanate based ceramic material is 0.9Ba 0.8 Sr 0.2 TiO 3 -0.1Bi(Mg 2 / 3 Nb 1 / 3 )O 3 .

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Abstract

The invention provides a barium strontium titanate-based ceramic material as well as a preparation method and application thereof, and belongs to the technical field of energy storage ceramic materials. The chemical composition of the barium strontium titanate-based ceramic material provided by the invention is (1-x) Ba < 0.8 > Sr < 0.2 > TiO < 3-x > Bi (Mg < 2 > / 3Nb < 1 / 3 >) O < 3 >, and x is greater than or equal to 0.08 and less than or equal to 0.16. The barium strontium titanate-based ceramic material provided by the invention has high energy storage density and energy storage efficiency.Results show that the barium strontium titanate-based ceramic material provided by the invention has high dielectric relaxation and breakdown resistance, and can obtain a slender hysteresis loop; under an external electric field of 250 kV / cm, the effective energy storage density of the barium strontium titanate-based ceramic material is 2.028 J / cm < 3 >, and the energy storage efficiency reaches96.8%.

Description

technical field [0001] The invention relates to the technical field of energy storage ceramic materials, in particular to a barium strontium titanate-based ceramic material and a preparation method and application thereof. Background technique [0002] With the rapid development of the world economy and human society, people's demand for energy is increasing day by day, and new clean energy sources such as solar energy and wind energy that have intermittent, random, and volatility problems are gradually becoming practical. Advanced energy storage equipment and Research on the rational storage and utilization of these new types of renewable energy has gradually deepened. Because of its ultra-high power density and ultra-fast charging and discharging capabilities, dielectric capacitors are very suitable for fields with large power fluctuations or high power density. In addition, the charging and discharging process of dielectric capacitors is extremely fast, and it also has a...

Claims

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Application Information

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IPC IPC(8): C04B35/468
CPCC04B35/468C04B2235/3255C04B2235/442C04B2235/3298C04B2235/3206C04B2235/96C04B2235/6562C04B2235/6567
Inventor 庞利霞周陈周迪刘卫国张磊王欣纪红芬邓立儿
Owner XIAN TECHNOLOGICAL UNIV
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