Strontium titanate based lead-free high-pressure-resistant ceramic energy storage material and preparation method thereof

A ceramic material and high-voltage-resistant technology, applied in the field of energy storage ceramics, can solve the problems of limited application, low energy storage density, and low saturation polarization strength, and achieve uniform grain size distribution, high energy storage density, and good stability Effect

Active Publication Date: 2017-12-08
SHAANXI UNIV OF SCI & TECH
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  • 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

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  • Strontium titanate based lead-free high-pressure-resistant ceramic energy storage material and preparation method thereof
  • Strontium titanate based lead-free high-pressure-resistant ceramic energy storage material and preparation method thereof
  • Strontium titanate based lead-free high-pressure-resistant ceramic energy storage material and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0046] The preparation method of the strontium titanate-based lead-free high-voltage resistant energy storage ceramic material of the present invention comprises the following steps:

[0047] (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 12-16 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1150-1200°C for 3-5 hours to obtain blocks shape solid, and then crush the massive solid through a 120-mesh sieve to obtain SrTiO 3 Powder;

[0048] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 , Na 2 CO 3 ,TiO 2 , BaCO 3 , La 2 o 3 and ZrO 2 After batching, use absolute ethanol as the medium, mix evenly through ball milling for 12-16 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 800-850°C ...

Embodiment 1

[0061] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -x(0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ), where x represents 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Mole fraction, and x=0.1.

[0062] The preparation method of the above-mentioned lead-free high energy storage density ceramic material comprises the following steps:

[0063] (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;

[0064] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 , N...

Embodiment 2

[0072] The chemical formula of the ceramic material in this example is: (1-x)SrTiO 3 -x(0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 ), where x represents 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Mole fraction, and x=0.2.

[0073] The preparation method of the above-mentioned lead-free high energy storage density ceramic material comprises the following steps:

[0074] (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 13 hours, then dry at 100°C, pass through a 120-mesh sieve, briquette, and pre-calcine at 1165°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;

[0075] (2) According to the chemical formula 0.93Bi 0.5 Na 0.5 TiO 3 -0.07Ba 0.94 La 0.04 Zr 0.02 Ti 0.98 o 3 Analytical pure Bi 2 o 3 ,...

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Abstract

The invention discloses a lead-free ceramic material with high energy storage density and energy storage efficiency and a preparation method thereof. The preparation method comprises the following steps of mixing materials according to a chemical formula (1-x)SrTiO3-x(0.93Bi0.5Na0.5TiO3-0.07Ba0.94La0.04Zr0.02Ti0.98O3), uniformly mixing, so as to obtain raw-material powder, uniformly mixing an organic solvent and an emulsifier, then adding the raw-material powder, a binder, a dispersant and a plasticizer, then uniformly mixing, carrying out tape casing, and then cutting, superposing, pressurizing, discharging glue and sintering, so that a strontium titanate based lead-free high-pressure-resistant ceramic energy storage material is obtained. The ceramic material provided by the invention is simple in preparation process, mature in technique, suitable for industrialized production and excellent in energy storage property, and has the energy storage density of 1.80J/cm<3> to 2.83J/cm<3>, the energy storage efficiency of 74 to 87 percent and the electric field intensity of 175kV/cm to 326kV/cm, which are calculated based on an electric hysteresis loop.

Description

technical field [0001] The invention belongs to the field of energy storage ceramics, in particular to a strontium titanate-based lead-free high-voltage resistant energy storage ceramic material and a preparation method thereof. Background technique [0002] With the continuous development of the electronics industry, electronic components with high energy storage density and high electric field strength have attracted widespread attention, and it is imminent to develop new high energy storage devices. In order to meet the development of electronic components in the direction of miniaturization, large capacity, high withstand voltage and miniaturization, researchers from all over the world are actively exploring and researching electronic components with high dielectric constant, low dielectric loss, high breakdown strength and high storage capacity. Dielectric materials with high energy density and high energy storage efficiency. Compared with other energy storage dielectr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49
CPCC04B35/49C04B2235/3227C04B2235/3244C04B2235/3298C04B2235/442C04B2235/96
Inventor 杨海波闫非林营
Owner SHAANXI UNIV OF SCI & TECH
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