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Solid electrolyte and preparation method thereof

A solid electrolyte and powder technology, applied in the field of electrolytes, can solve problems such as poor thermal shock resistance

Pending Publication Date: 2022-04-26
河北欧禹科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a solid electrolyte and a preparation method thereof to solve the technical problem of poor thermal shock resistance of the zirconia tube solid electrolyte in the prior art

Method used

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  • Solid electrolyte and preparation method thereof
  • Solid electrolyte and preparation method thereof

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preparation example Construction

[0046] The present invention also provides a method for preparing a solid electrolyte, which is used to prepare the solid electrolyte. The preparation method includes:

[0047] S1. 80wt%-98wt% of ZrO 2 Mix with 2wt%-5wt% stabilizer to obtain powder;

[0048] S2. Superfine the obtained powder;

[0049] S3. Mix the powder after superfine treatment with the binder according to the mass ratio of 20-50:50-80, the mass percentage of the binder includes: 80%-95% paraffin , 1%-7% of the first additive and 0.1%-0.8% of the second additive;

[0050] S4. mixing the mixture obtained after mixing;

[0051] S5. After kneading, granulation, injection, degreasing and sintering are carried out to obtain a solid electrolyte.

[0052] As an optional embodiment, the first step of aging treatment is performed on the prepared solid electrolyte at 1100°C-1350°C for 1-3 hours; the second step is performed on the prepared solid electrolyte at 1000°C-1400°C Aging treatment 6-12 hours.

[0053] As...

Embodiment 1

[0056] This embodiment provides a solid electrolyte, wherein the powder mass percentage is: 95% ZrO 2 , 2% CaO, 2% MgO and 1% CeO 2 The mass percentage of the adhesive is: 86.4% of PW, 5% of EVA, 4% of PP, 4% of HDPE, 0.4% of beeswax and 0.2% of SA; the mass percentage of adhesive and powder is: 3: 7. First, the powder is subjected to ultra-grinding treatment, and the electron microscope picture after treatment can be found in figure 1 , and then knead the powder and binder, then granulate, inject, degrease and sinter to prepare the required solid electrolyte. In this implementation, the mixing temperature is preferably 180° C., and the mixing time is preferably 8 hours. The sintering temperature in this embodiment is preferably pre-fired at low temperature to 900° C., and the sintering time is preferably 8 hours, and then the sintering temperature is raised to 1650° C., and the sintering time is 12 hours. After the sintering is completed, aging treatment is performed on t...

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Abstract

The invention discloses a solid electrolyte and a preparation method thereof, and relates to the technical field of electrolytes. The solid electrolyte comprises the following components: powder and an adhesive, wherein the mass ratio of the powder to the adhesive is (20-50): (50-80); the powder comprises the following components in percentage by mass: 80%-98% of ZrO2 and 2%-5% of a stabilizer, and the adhesive comprises the following components in percentage by mass: 80%-95% of paraffin, 1%-7% of a first additive and 0.1%-0.8% of a second additive; the preparation method comprises the following steps: mixing 80wt%-98wt% of ZrO2 and 2wt%-5wt% of a stabilizer to obtain powder; carrying out ultrafine treatment on the obtained powder; mixing the powder subjected to the ultrafine treatment with an adhesive, and mixing a mixture obtained after mixing; and after mixing, granulating, injecting, degreasing and sintering to prepare the solid electrolyte. Therefore, the problem of poor thermal shock property of the zirconium oxide tube solid electrolyte in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of electrolytes, in particular to a solid electrolyte and a preparation method thereof. Background technique [0002] The direct oxygen determination technology of molten steel was listed as one of the three major scientific research achievements in the field of iron and steel metallurgy in the world in the 1970s, and its research and application have developed rapidly. Zirconia tube solid electrolyte is one of the important components. From the point of view of the principle of oxygen measurement, it must be a good conductor of oxygen ions; in addition, it divides two different oxygen partial pressures and must be a highly dense material; when measuring with an oxygen sensor, the constant oxygen probe should be directly inserted into the In the high-temperature molten steel at 1600-1700°C, under such harsh conditions, ZrO 2 The tube is subject to sudden temperature changes, generating thermal stress in di...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/622C04B35/64C04B35/634G01F23/22
CPCC04B35/48C04B35/622C04B35/64C04B35/63496G01F23/22C04B2235/3208C04B2235/3206C04B2235/3229C04B2235/656C04B2235/6567
Inventor 胡树新李春朝叶江海史梦强
Owner 河北欧禹科技有限公司
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