Pulse energy storage ceramic material and preparation method thereof

A ceramic material, energy storage technology, applied in electrical components, fixed capacitor dielectrics, circuits, etc., can solve the problems of limited energy storage performance, low electrical strength of energy storage materials, etc., to achieve performance improvement, good energy storage performance, performance stable effect

Inactive Publication Date: 2020-08-25
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, (Sr,Bi)TiO 3 The low electrical strength of base energy storage materials limits the improvement of their energy storage performance

Method used

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  • Pulse energy storage ceramic material and preparation method thereof
  • Pulse energy storage ceramic material and preparation method thereof
  • Pulse energy storage ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-7

[0035] Embodiments 1-7 provide a pulse energy storage ceramic material, including a main crystal phase, and the chemical general formula of the main crystal phase is Sr 0.7+x Ca y Bi 0.2 TiO 3 , where 0.01≤x≤0.05, 0.05≤y≤0.15.

[0036] A preparation method of a pulse energy storage ceramic material, comprising the following steps:

[0037] Step 1: Sr 0.7+x Ca y Bi 0.2 TiO 3 Main crystal phase powder synthesis; the purity is 99% of strontium carbonate, 99.5% of titanium dioxide, 99.5% of bismuth trioxide and 99% of calcium carbonate as starting materials, and the molar ratio between Sr, Ca, Bi and Ti is controlled It is Sr:Ca:Bi:Ti=(0.7+x):y:0.2:1, where 0.01≤x≤0.05, 0.05≤y≤0.15, ball milled and mixed evenly, and pre-fired at 900~1100℃ for 2~4 Hours, with furnace cooling to get Sr 0.7+x Ca y Bi 0.2 TiO 3 The main crystal phase powder; the ball milling process is: using zirconia balls as the ball milling medium, using deionized water as the solvent, and according to ...

Embodiment 8-17

[0050] Embodiments 8-17 provide a pulse energy storage ceramic material, comprising a main crystal phase and a modification additive, and the chemical general formula of the main crystal phase is Sr 0.7+x Ca y Bi 0.2 TiO 3 , where 0.01≤x≤0.05, 0.05≤y≤0.15. The modified additive is CeO 2 , Nb 2 o 5 、Nd 2 o 3 , ZnO, MnCO 3 , SiO 2 One or more of them account for 0.5-4.0% of the total mass of the pulse energy storage ceramic material.

[0051] Among the modified additives, CeO 2 , Nb 2 o 5 、Nd 2 o 3 , ZnO, MnCO 3 , SiO 2 The percentage content of the total mass of the pulse energy storage ceramic material is CeO 2 : 0.2~1.0%, Nb 2 o 5 : 0.5~2.5%, Nd 2 o 3 : 0.1~2.0%, ZnO: 0.2~1.2%, MnCO 3 : 0.1~0.6%, SiO 2 : 0.1 to 1.0%.

[0052] Step 1: Sr 0.7+x Ca y Bi 0.2 TiO 3 Main crystal phase powder synthesis; the purity is 99% of strontium carbonate, 99.5% of titanium dioxide, 99.5% of bismuth trioxide and 99% of calcium carbonate as starting materials, and the...

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Abstract

The invention provides a pulse energy storage dielectric ceramic material and a preparation method thereof. The invention belongs to the field of electronic component materials. The material consistsof a main crystal phase that is Sr<0.7+x>Ca<y>Bi0.2TiO3 (0.01<=x<=0.05, 0.05<=y<=0.15) and a modification additive, wherein the modification additive is one or more of CeO2, Nb2O5, Nd2O3, ZnO, MnCO3 and SiO2. The preparation method comprises the following steps: burdening, ball-milling, granulating, forming and sintering. The pulse energy storage dielectric ceramic material has relatively high dielectric strength (350-450kV / cm), relatively high energy storage density (2.1 J / cm<3> at 290kV / cm), relatively high energy storage efficiency (97-99%) and stable performance, and the loss is as low as0.002. The pulse energy storage dielectric ceramic material is suitable for use as a pulse capacitor dielectric material. The preparation method has the characteristics of being simple, easy to control, environment-friendly and low in cost.

Description

technical field [0001] The invention belongs to the technical field of electronic materials, and relates to a pulse energy storage ceramic material and a preparation method thereof. Background technique [0002] With the sharp increase in energy consumption and the deterioration of the ecological environment around the world, countries have accelerated the extensive development and research of renewable energy technologies such as solar energy, wind energy, thermal energy, etc., in order to reduce or even replace the use of fossil fuel energy. In this context, the development and manufacture of energy storage components that store and provide electrical energy more efficiently have received more extensive attention. Compared with energy storage devices such as electrochemical supercapacitors, lithium batteries and fuel cells, dielectric capacitors have low energy density and high power density, and can release energy in the form of pulse power in a very short time. load. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/47C04B35/622H01G4/12
CPCC04B35/47C04B35/622C04B2235/3208C04B2235/3224C04B2235/3229C04B2235/3251C04B2235/3262C04B2235/3284C04B2235/3298C04B2235/656C04B2235/6567C04B2235/963H01G4/1227
Inventor 唐斌赵鹏方梓烜袁颖钟朝位张树人
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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