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A kind of cordierite-based sagger and its production process

A production process, cordierite technology, applied in the field of cordierite-based sagger and its production process, can solve the problems of high porosity, easy to be corroded, affecting the purity of positive electrode materials, etc.

Active Publication Date: 2022-01-18
长沙中瓷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cordierite sagger prepared by the traditional process has many disadvantages. First, the traditional cordierite sagger has high porosity, low volume density, high internal impurity components and easy chemical reaction with the active elements in the lithium battery at high temperature. The life of the sagger is not long and it is easily corroded. Corrosion causes the exfoliated material of the sagger to fall into the positive electrode material of the lithium battery, affecting the purity of the positive electrode material

Method used

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  • A kind of cordierite-based sagger and its production process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Described filler comprises the following steps to make:

[0032] Step S1, adding graphene oxide into deionized water, adding dropwise 15% aqueous sodium hydroxide solution to adjust the pH until pH=10, then adding boric acid, stirring at a constant speed for 5 minutes, adding ethylenediamine, and continuing to stir for 5 minutes to obtain a mixed Liquid, transferred to the reaction kettle, heated to 100 ° C, kept warm and reacted for 6 hours, after the reaction was placed in 15% ethanol aqueous solution with a volume fraction of dialysis for 12 hours, to remove residues such as ethylenediamine, to obtain hydrogel, control graphene oxide , the weight ratio of boric acid, ethylenediamine and deionized water is 5: 0.3: 0.8: 50;

[0033] Step S2: Add zirconium acetate to absolute ethanol, heat in a water bath at 45°C, slowly add acetylacetone dropwise, keep warm for 1 hour, then slowly add triethylamine dropwise, keep warm and react for 4 hours, then cool down to room tempe...

Embodiment 2

[0036] Described filler comprises the following steps to make:

[0037]Step S1, adding graphene oxide into deionized water, adding dropwise 15% aqueous sodium hydroxide solution to adjust the pH until pH = 11, then adding boric acid, stirring at a constant speed for 5 minutes, adding ethylenediamine, and continuing to stir for 5 minutes to obtain a mixed Liquid, transferred to the reaction kettle, heated to 110 ° C, kept warm and reacted for 6 hours, after the reaction was dialyzed in 15% ethanol aqueous solution for 12 hours to remove residues such as ethylenediamine, and obtained a hydrogel to control graphene oxide , the weight ratio of boric acid, ethylenediamine and deionized water is 8: 0.4: 1.0: 50;

[0038] Step S2: Add zirconium acetate to absolute ethanol, heat in a water bath at 50°C, slowly add acetylacetone dropwise, keep warm for 1 hour, then slowly add triethylamine dropwise, keep warm and react for 4 hours, then cool down to room temperature, add dropwise aceti...

Embodiment 3

[0041] Described filler comprises the following steps to make:

[0042] Step S1, adding graphene oxide into deionized water, adding dropwise 15% aqueous sodium hydroxide solution to adjust the pH until pH=12, then adding boric acid, stirring at a constant speed for 5 minutes, adding ethylenediamine, and continuing to stir for 5 minutes to obtain a mixed Liquid, transferred to the reaction kettle, heated to 120 ° C, kept warm and reacted for 6 hours, after the reaction was placed in 15% ethanol aqueous solution for dialysis for 12 hours, to remove residues such as ethylenediamine, to obtain hydrogel, control graphene oxide , the weight ratio of boric acid, ethylenediamine and deionized water is 10: 0.5: 1.2: 50;

[0043] Step S2: Add zirconium acetate to absolute ethanol, heat in a water bath at 65°C, slowly add acetylacetone dropwise, keep warm for 1 hour, then slowly add triethylamine dropwise, keep warm and react for 4 hours, then cool down to room temperature, add dropwise ...

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Abstract

The invention relates to a cordierite-based sagger and a production process thereof, comprising a body and a coating on the surface of the body, the coating includes a coating layer and a dense layer, and the coating layer includes the following raw materials in weight percent: 50- 60% corundum, 10‑20% spinel, 5‑10% mixed powder, 5‑10% clay, and the balance is cerium dioxide powder; filler is added as filler for sintering, and its structure is a loaded The three-dimensional graphene structure of zirconia crystals is used as a filler and mixed with the base material before sintering. Its special three-dimensional structure can form a good bonding layer with the base material, and it is tightly combined with the base material. The coating layer is made of corundum and spinel. etc. as the base material, which is sprayed on the surface of the body to form a coating layer, which contains chromium carbide and nickel-chromium alloy powder, and chromium carbide endows the coating with excellent oxidation resistance, ultra-high hardness and excellent Excellent wear resistance, increasing the service life of the box.

Description

technical field [0001] The invention belongs to the technical field of saggers, and in particular relates to a cordierite-based sagger and a production process thereof. Background technique [0002] Due to its high voltage, high energy density, good reversibility and other advantages, lithium-ion batteries have broad application prospects in many fields such as electronic devices, electric vehicles, military and aerospace. Lithium-ion battery cathode materials are an important part of lithium-ion batteries. In actual production, the high-temperature solid-state synthesis method is the main method for preparing lithium-ion battery cathode materials due to its simple process and low equipment requirements. As a container for raw materials in the high-temperature roasting process, the sagger plays a vital role in the normal production of lithium-ion battery cathode materials. With the increasing demand for lithium battery materials and the development trend of high voltage, mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/195C04B35/66C04B35/622C04B35/626C04B41/90
CPCC04B35/195C04B35/66C04B35/622C04B35/62605C04B41/90C04B41/52C04B41/009C04B2235/3463C04B2235/402C04B2235/3222C04B2235/425C04B2235/3409C04B2235/449C04B2235/3244C04B2235/3418C04B2235/3201C04B41/5057C04B41/5144C04B41/4545C04B41/5031C04B41/5046C04B41/5037C04B41/5045C04B41/4529
Inventor 何江
Owner 长沙中瓷新材料科技有限公司
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