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Wide-temperature stable energy storage ceramic material and preparation method thereof

A ceramic material and a stable technology, which are applied in the field of wide temperature stable energy storage ceramic materials and their preparation, can solve the problems of low releasable energy density, insufficient temperature stability of BaTiO-based energy storage performance, and lack of pulse charge and discharge performance, and achieve The effect of good energy storage temperature stability, increased process complexity, and high energy efficiency

Pending Publication Date: 2022-04-15
MOBILE ANTENNA TECH SHENZHEN +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at this stage about BaTiO 3 The releasable energy density reported by base ceramics is still at a relatively low level (0.6-2.0 J / cm 3 )
In addition, on BaTiO 3 The research on the temperature stability of base energy storage performance and the actual pulse charge and discharge performance is still relatively lacking.

Method used

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  • Wide-temperature stable energy storage ceramic material and preparation method thereof
  • Wide-temperature stable energy storage ceramic material and preparation method thereof
  • Wide-temperature stable energy storage ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation method of the wide temperature stable energy storage ceramic material described in this embodiment comprises the following steps:

[0037] S1: BaCO 3 、TiO 2 , SrCO 3 、 Bi 2 o 3 , MgO and Nb 2 o 5 According to the weight percentages of 68.1wt%, 28.9wt%, 1.2wt%, 1.7wt%, 0.05wt% and 0.08wt%, respectively, the compounded material is obtained;

[0038] S2: The mixture is milled with yttrium-stabilized zirconia balls as the ball milling medium, and deionized water is used as the solvent. According to the weight ratio of mixture: ball milling medium: solvent = 1:5:2, grind for 6 hours, dry and pass through an 80-mesh sieve After that, the mixture is obtained;

[0039] S3: The mixture is placed in a crucible, and pre-fired at 1000°C for 4 hours to obtain a pre-fired powder;

[0040] S4: Weigh 100g of calcined powder, mix with 0.05g of manganese carbonate and 1.0g of silicon dioxide, and ball mill for 6 hours, dry and pass through an 80-mesh sieve, mix wi...

Embodiment 2

[0043] The preparation method of the wide temperature stable energy storage ceramic material described in this embodiment comprises the following steps:

[0044] S1: BaCO 3 、TiO 2 , SrCO 3 、 Bi 2 o 3 , MgO and Nb 2 o 5 According to the weight percentages of 68.1wt%, 28.5wt%, 3.1wt%, 3.0wt%, 0.20wt% and 0.32wt%, the mixture is obtained;

[0045] S2: The mixture is milled with yttrium-stabilized zirconia balls as the ball milling medium, and deionized water is used as the solvent. According to the weight ratio of mixture: ball milling medium: solvent = 1:5:2, grind for 6 hours, dry and pass through an 80-mesh sieve After that, the mixture is obtained;

[0046] S3: The mixture is placed in a crucible, and pre-fired at 1000°C for 4 hours to obtain a pre-fired powder;

[0047] S4: Weigh 100g of calcined powder, mix with 0.1g of manganese carbonate and 0.5g of silicon dioxide, and ball mill for 6 hours, dry and pass through an 80-mesh sieve, mix with polyvinyl alcohol aqueou...

Embodiment 3

[0050] The preparation method of the wide temperature stable energy storage ceramic material described in this embodiment comprises the following steps:

[0051] S1: BaCO 3 、TiO 2 , SrCO 3 、 Bi 2 o 3 , MgO and Nb 2 o 5 According to the weight percentages of 61.5wt%, 28.4wt%, 4.7wt%, 4.6wt%, 0.30wt% and 0.49wt%, respectively, the compounded material is obtained;

[0052] S2: The mixture is milled with yttrium-stabilized zirconia balls as the ball milling medium, and deionized water is used as the solvent. According to the weight ratio of mixture: ball milling medium: solvent = 1:5:2, grind for 6 hours, dry and pass through an 80-mesh sieve After that, the mixture is obtained;

[0053] S3: The mixture is placed in a crucible, and pre-fired at 1000°C for 4 hours to obtain a pre-fired powder;

[0054] S4: Weigh 100g of calcined powder, mix with 0.05g of manganese carbonate and 1.0g of silicon dioxide, and ball mill for 6 hours, dry and pass through an 80-mesh sieve, mix wi...

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Abstract

The invention relates to the technical field of ceramic materials, in particular to a wide-temperature stable type energy storage ceramic material and a preparation method thereof.The wide-temperature stable type energy storage ceramic material comprises a principal crystalline phase and a modifier, the general chemical formula of the principal crystalline phase is (1-x) BaTiO3-x [ySr0. 7Bi0. 2TiO3-(1-y) Bi (Mg2 / 3Nb1 / 3) O3], x is larger than or equal to 0.1 and smaller than or equal to 0.4, y is larger than or equal to 0.5 and smaller than or equal to 0.95, the modifier is a simple oxide or carbonate, and the main crystalline phase and the modifier are mixed to form the wide-temperature stable type energy storage ceramic material. The main crystal phase is modified by adding the modifier, so that the energy storage performance is obviously improved, high energy density and high energy efficiency are realized, and the material has excellent frequency and temperature stability; according to the preparation method of the wide-temperature stable energy storage ceramic material provided by the invention, the energy storage ceramic material is prepared by ball-milling and mixing for the first time, pre-sintering, ball-milling and mixing for the second time, and sintering at 1100-1250 DEG C. The method is simple, the cost is low, the control is easy, and the preparation is easy.

Description

technical field [0001] The invention relates to the technical field of ceramic materials, in particular to a wide temperature stable energy storage ceramic material and a preparation method thereof. Background technique [0002] With the rapid development of renewable and new energy sources, energy storage devices with high energy density, high power, and high efficiency have received increasing attention. As an optimal energy storage device for pulsed power systems, dielectric capacitors have attracted extensive research attention in the past decade due to their advantages such as fast charge and discharge rates, high power density, and long cycle life. As the core component of dielectric capacitors, dielectric materials directly determine the performance of dielectric capacitors. Among various materials used in dielectric capacitors, energy storage ceramics are considered to be the most promising ones because of their excellent chemical stability, temperature stability, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/468C04B35/622
Inventor 司峰王秀红
Owner MOBILE ANTENNA TECH SHENZHEN
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