Lead-free ceramic material with high energy storage density and preparation method

A high energy storage density, ceramic material technology, applied in the field of energy storage ceramics, can solve the problems of low energy storage density and energy storage efficiency, limit the actual use of materials, etc., to achieve good dielectric loss, excellent energy storage density and energy storage. Efficiency, effect of high energy storage density

Inactive Publication Date: 2018-03-02
周开珍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, lead-free energy storage ceramic materials are mainly concentrated in BaTiO 3 , SrTiO 3 , CaTiO 3 and Bi 0.5 Na 0.5 Ti0 3 Howe

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] Lead-free ceramic material 0.90Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 ·0.10Bi 0.18 Na 0.46 NbO 3 For the preparation method, follow the steps below:

[0024] (1) According to the chemical formula Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Weigh the raw material BaCO 3 , SrCO 3 , TiO 2 And SnO 2 , Do the ingredients; ball mill the weighed raw materials in a planetary ball mill, the ball milling medium used is zirconia balls, the dispersion medium is acetone, and the weight ratio of raw material: ball milling medium: acetone during the ball milling process is 1:2:1; The speed of the ball mill is 250r / min, and the time of the ball mill is 10 hours. After ball milling and drying, powder A is obtained; after powder A is pre-fired in the air at 900℃ for 10 hours, it is ground through a 120-mesh sieve to obtain Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Powder

[0025] (2) According to the chemical formula Bi 0.18 Na 0.46 NbO 3 Weigh the raw material Bi 2 O 3 , Na 2 CO 3 And Nb 2 ...

Example Embodiment

[0030] Example 2

[0031] Lead-free ceramic material 0.88Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 ·0.12Bi 0.18 Na 0.46 NbO 3 For the preparation method, follow the steps below:

[0032] (1) According to the chemical formula Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Weigh the raw material BaCO 3 , SrCO 3 , TiO 2 And SnO 2 , Do the ingredients; ball mill the weighed raw materials in a planetary ball mill, the ball milling medium used is zirconia balls, the dispersion medium is acetone, and the weight ratio of raw material: ball milling medium: acetone during the ball milling process is 1:2:2; The speed of the ball mill is 250r / min, and the time of the ball mill is 18 hours. After ball milling and drying, powder A is obtained; powder A is pre-burned in air at 920°C for 8 hours and then ground through a 120-mesh sieve to obtain Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Powder

[0033] (2) According to the chemical formula Bi 0.18 Na 0.46 NbO 3 Weigh the raw material Bi 2 O 3 , Na 2 CO 3 And Nb 2 O 5 Bat...

Example Embodiment

[0038] Example 3

[0039] Lead-free ceramic material 0.85Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 ·0.15Bi 0.18 Na 0.46 NbO 3 For the preparation method, follow the steps below:

[0040] (1) According to the chemical formula Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Weigh the raw material BaCO 3 , SrCO 3 , TiO 2 And SnO 2 , Do the ingredients; ball mill the weighed raw materials in a planetary ball mill, the ball milling medium used is zirconia balls, the dispersion medium is acetone, and the weight ratio of raw materials: ball milling medium: acetone during the ball milling process is 1:3:1; The speed of the ball mill is 300r / min, and the time of the ball mill is 15 hours. After ball milling and drying, powder A is obtained; powder A is pre-burned in air at 920°C for 6 hours, and then ground through a 120-mesh sieve to obtain Ba 0.56 Sr 0.44 Ti 0.93 Sn 0.07 O 3 Powder

[0041] (2) According to the chemical formula Bi 0.18 Na 0.46 NbO 3 Weigh the raw material Bi 2 O 3 , Na 2 CO 3 And Nb 2 O 5 B...

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Abstract

The invention provides a lead-free ceramic material with high energy storage density and a preparation method, belonging to the technical field of energy storage ceramics. The method of the present invention first carries out batching according to Ba0.56Sr0.44Ti0.93Sn0.07O3 and Bi0.18Na0.46NbO3 respectively, after mixing uniformly by ball milling process, at first carry out pre-calcination, then grind and sieve, then according to chemical formula (1-x) Ba0 .56Sr0.44Ti0.93Sn0.07O3·xBi0.18Na0.46NbO3 ingredients and ball milling, granulation after ball milling, and then compression molding in the mold, and then after debinding treatment, the discharge plasma sintering system is used for primary sintering, and then ordinary high temperature The ceramic material with high energy storage density and high energy storage efficiency is obtained after secondary sintering in the furnace. The preparation method of the invention is simple, and the obtained lead-free ceramic material has higher energy storage density and energy storage efficiency.

Description

【Technical field】 [0001] The invention relates to the technical field of energy storage ceramics, in particular to a lead-free ceramic material with high energy storage density and a preparation method thereof. 【Background technique】 [0002] In recent years, with the continuous development of information technology, high-energy-storage-density dielectric materials are key materials for making small, large-capacity, and high-efficiency capacitors, and they play an increasingly important role in various electronic and power systems. Because the high energy storage density ceramic dielectric capacitor material has 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, it meets the requirements of new energy development and utilization. It is widely used in many modern fields such as communication, computer, a...

Claims

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Application Information

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IPC IPC(8): C04B35/468C04B35/622C04B35/638C04B41/88
CPCC04B35/468C04B35/622C04B35/638C04B41/009C04B41/5116C04B41/88C04B2235/3201C04B2235/3213C04B2235/3251C04B2235/3293C04B2235/3298C04B2235/6562C04B2235/6567C04B41/4539C04B41/0072
Inventor 周开珍
Owner 周开珍
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