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Borate fast ionic conductor and preparation method thereof

A technology of ion conductors and borates, which is applied in the field of borate fast ion conductors and its preparation, can solve the problems that it is not easy to grasp the doping amount, do not exclude, impurity, and melting point drop are not suitable for large-scale production, and achieve the goal of preparing The method is simple, the synthesis temperature is low, and the effect of environmental protection and low cost

Inactive Publication Date: 2017-08-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this document discloses that a purer doping compound can only be obtained in the range of x=0.5-1.0, and with the increase of Na doping amount, the melting point of the doping compound gradually decreases, although the analysis shows that it is towards Li 6 NdB 3 o 9 Doping with Na does have the potential to increase ionic conductivity, but it does not rule out that the increase in ionic conductivity is caused by factors such as melting state or impurities due to melting point drop.
Therefore, it is not easy to control the doping amount by doping Na element into borate rich in Li ions, and the factors such as impurity phase and melting point drop are not suitable for industrial scale production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) Will Li 2 CO 3 、Na 2 CO 3 、BaCO 3 and H 3 BO 3 The raw powder of Li 3 NaBaB 6 o 12 Weigh the ingredients and put them into a ball mill tank, add zirconia balls with a diameter of 7mm and deionized water, ball mill for 2 hours, mix evenly and finely, take out and dry to obtain powder raw materials;

[0015] (2) Press the dried powder raw material in step (1) into a columnar sample, place it on a ceramic setter, cover the sample with a crucible, then place it in a tube furnace, calcinate at 550 ° C, keep it warm for 2 hours, and then Clamp the setter plate with pliers from the tube furnace at 550°C and take it out quickly, so that the samples on the ceramic setter plate and in the crucible are cooled rapidly, and after cooling to room temperature, smash and grind them into powder;

[0016] (3) Put the powder obtained by grinding in step (2) into a ball milling jar, add zirconia balls with diameters of 2mm and 7mm respectively, and ball mill the powder and zir...

Embodiment 2

[0020] (1) Will Li 2 CO 3 、Na 2 CO 3 、BaCO 3 and H 3 BO 3 The raw powder of Li 3 NaBaB 6 o 12 Weigh the ingredients and put them into a ball mill tank, add zirconia balls with a diameter of 7mm and deionized water, ball mill for 2 hours, mix evenly and finely, take out and dry to obtain powder raw materials;

[0021] (2) Press the dried powder raw material in step (1) into a columnar sample, place it on a ceramic setter, cover the sample with a crucible, then place it in a tube furnace, calcinate at 550 ° C, keep it warm for 2 hours, and then Clamp the setter plate with pliers from the tube furnace at 550°C and take it out quickly, so that the samples on the ceramic setter plate and in the crucible are cooled rapidly, and after cooling to room temperature, smash and grind them into powder;

[0022] (3) Put the powder obtained by grinding in step (2) into a ball milling jar, add zirconia balls with diameters of 2mm and 7mm respectively, and ball mill the powder and zir...

Embodiment 3

[0026] (1) Will Li 2 CO 3 、Na 2 CO 3 、BaCO 3 and H 3 BO 3 The raw powder of Li 3 NaBaB 6 o 12 Composition Weigh the ingredients and put them into a ball mill tank, add zirconia balls with a diameter of 7mm and deionized water, ball mill for 2 hours, mix evenly and finely, take out and dry to obtain powder raw materials;

[0027] (2) Press the dried powder raw material in step (1) into a columnar sample, place it on a ceramic setter, cover the sample with a crucible, then place it in a tube furnace, calcinate at 550°C, keep it warm for 2 hours, and then Clamp the setter plate with pliers from the tube furnace at 550°C and take it out quickly, so that the samples on the ceramic setter plate and in the crucible are cooled rapidly, and after cooling to room temperature, smash and grind them into powder;

[0028] (3) Put the powder obtained by grinding in step (2) into a ball mill jar, add zirconia balls with diameters of 2mm and 7mm respectively, and ball mill the powder ...

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Abstract

The invention discloses a fast ionic conductor borate Li3NaBaB6O12 and a preparation method thereof. The preparation method comprises the following steps: raw materials corresponding to Li3NaBaB6O12 are weighed according to a stoichiometric ratio, ball milling is carried out; after high temperature pre-burning, the raw materials are rapidly removed for cooling, and ball milling is carried out; finally, after cold isostatic pressing, sintering is carried out, and Li3NaBaB6O12 is obtained. The preparation method is simple and is suitable for large scale production. The Li3NaBaB6O12 has high ionic conductivity, high heat stability and chemical stability at a high temperature; at 300-500 DEG C, conductivity is 10<-4>-10<-3>S / cm, and the product is an excellent fast ionic conductor material.

Description

technical field [0001] The invention belongs to the technical field of inorganic materials, and in particular relates to a borate fast ion conductor and a preparation method thereof. Background technique [0002] With the development of human society and the further improvement of industrialization, the development of efficient, clean, safe and economical new green energy has become an inevitable trend of future energy development. Because ionic conductors have important theoretical and practical application values, they have been developed into valuable materials or devices in many application fields. As a material in ion conductors, fast ion conductor materials, also known as solid electrolytes, have attracted much attention in the fields of high-performance energy storage devices, new energy materials for fuel cells, sodium-sulfur batteries, and oxygen analyzers. For example, both oxygen ion conductors and hydrogen ion conductors can be used as electrolyte diaphragms of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/01C04B35/622H01M8/1246
CPCC04B35/01C04B35/622C04B2235/3201C04B2235/3203C04B2235/3215H01M8/1246Y02E60/50Y02P70/50
Inventor 覃杏柳苏聪学方亮
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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