Dielectric strontium titanate material for super-capacitance battery and preparation method thereof

A supercapacitor battery and dielectric technology, applied in the field of electronic ceramics, can solve the problems of complex preparation process and large dielectric loss, and achieve the effects of simple preparation process, reduced preparation cost and simplified components

Active Publication Date: 2014-03-19
枣庄市三禾农副产品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Check some literatures and patents about the preparation of high dielectric constant materials, the information shows that the dielectric constant of the prepared dielectric materials generally does not exceed 10 7 order of magnitude, and there are problems such as large dielectric loss and complicated preparation process

Method used

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  • Dielectric strontium titanate material for super-capacitance battery and preparation method thereof
  • Dielectric strontium titanate material for super-capacitance battery and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Under a certain mass, the material component SrTiO 3 , Nb 2 o 5 and CeO 2 Weighing according to the molar ratio of 1:1:0.004, uniformly mix the materials of each group with a mixer, and ball mill on a planetary ball mill for 5 hours after mixing, and dry the mixed materials in a vacuum drying oven for 10 hours after ball milling. Pass the dried material powder through a 300-mesh sieve to obtain material powder with uniform particle size. The obtained material powder was pressed into a disc with a diameter of 10 mm and a thickness of 1 mm under a pressure of 3 MPa for 10 minutes, and the resulting pressed disc was pulverized and ground on a grinder for 1 hour, and the ground disc was ground. The powder is passed through a 150-mesh sieve, and the material powder obtained after sieving is pressed into a disc under a pressure of 1 MPa for 5 minutes to obtain SrTiO 3 Blank. Put it in a vacuum graphite carbon tube furnace for temperature segmental sintering. The segmenta...

Embodiment 2

[0028] Under a certain mass, the material component SrTiO 3 , Nb 2 o 5 and CeO 2 Weigh the reagents at a molar ratio of 1:1:0.0045, mix the materials of each group uniformly with a mixer, and ball mill on a planetary ball mill for 5.5 hours after mixing, and dry the mixed materials in a vacuum drying oven for 11 hours after ball milling , passing the dried material powder through a 300-mesh sieve to obtain a material powder with uniform particle size. The resulting material powder was pressed into a disc with a diameter of 10 mm and a thickness of 1.5 mm under a pressure of 3.5 MPa for a holding time of 7.5 minutes, and the resulting compressed disc was pulverized and ground on a grinder for 2 hours. The powder is passed through a 150-mesh sieve, and the material powder obtained after sieving is again pressed into a disc under a pressure of 2 MPa for a holding time of 4 minutes, and the obtained SrTiO 3 Blank. Put it in a vacuum graphite carbon tube furnace for temperatur...

Embodiment 3

[0030] Under a certain mass, the material component SrTiO 3 , Nb 2 o 5 and CeO 2 Weigh the reagents at a molar ratio of 1:1:0.6%, mix the materials of each group evenly with a mixer, and ball mill on a planetary ball mill for 6 hours after mixing, and mix the materials in a vacuum drying oven for 12 hours after ball milling Drying, passing the dried material powder through a 300-mesh sieve to obtain material powder with uniform particle size. The obtained material powder was pressed into a disc with a diameter of 10 mm and a thickness of 2 mm under a pressure of 4 MPa for a holding time of 5 minutes, and the resulting pressed disc was pulverized and ground on a grinder for 1 hour, and the ground disc was ground. The powder is passed through a 150-mesh sieve, and the material powder obtained after sieving is pressed into a disc under a pressure of 3MPa for 3 minutes again, and the obtained SrTiO 3 Blank. Put it in a vacuum graphite carbon tube furnace for temperature segme...

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Abstract

The invention discloses a dielectric strontium titanate (SrTiO3) material for a super-capacitance battery and a preparation method thereof, which belong to the technical field of an electronic ceramic material. In the material, the molar ratio of each component is as follows: SrTiO3: Nb2O5: CeO2=1: 1: (0.004-0.006). The preparation method comprises the steps of first preparing material powder, then preparing SrTiO3 green body, and finally sintering. The SrTiO3 material is prepared by adopting a primary mixing segmented sintering method. The prepared SrTiO3 material is high in dielectric constant, low in dielectric loss and slow to age. No adhesive is added, so that other chemical impurities can be prevented from being mixed with the SrTiO3 material. The components are simple, the sintering temperature is low, the preparation process is simple, and the industrialized mass production is favored.

Description

technical field [0001] The invention belongs to the technical field of electronic ceramics, in particular to a dielectric SrTiO for a supercapacitor battery 3 Materials and their preparation methods. Background technique [0002] With the global pollution and energy crisis becoming more and more serious, the green energy storage devices represented by supercapacitor batteries have become the focus of attention and research hotspots. Dielectric materials are one of the important materials in the manufacture of supercapacitor batteries. Dielectric materials with high dielectric constants and their preparation methods are the bottleneck that restricts the improvement of the energy storage capacity of supercapacitor batteries. The higher the dielectric constant of the dielectric material, the greater the room for improvement in the energy storage capacity of the supercapacitor battery. Check some literatures and patents about the preparation of high dielectric constant materia...

Claims

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Application Information

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IPC IPC(8): C04B35/47C04B35/622
Inventor 马玉田苏茂忠王宁章
Owner 枣庄市三禾农副产品有限公司
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