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Water-dispersible functional ceramic ink as well as preparation and application thereof

A technology of ceramic ink and functional function, which is applied in the field of ceramic ink for preparing solid electrolyte thin films, can solve the problems that the physical and chemical properties and film-forming characteristics of ceramic ink have not been involved, and the ceramic ink has not been reported in open literature, so as to facilitate rearrangement. Cloth, friction reduction, strong bonding effect

Active Publication Date: 2021-06-01
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These patents do not involve the physical and chemical properties and film-forming properties of ceramic inks, and there are no public reports on ceramic inks for solid electrolyte preparation.

Method used

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  • Water-dispersible functional ceramic ink as well as preparation and application thereof
  • Water-dispersible functional ceramic ink as well as preparation and application thereof
  • Water-dispersible functional ceramic ink as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh Li 7 La 3 Zr 2 o 12 Disperse 12g of solid electrolyte in 19mL of isopropanol, add the dispersion liquid and 70g of zirconia grinding beads with a diameter of 0.3mm into a ball mill jar, and disperse by ball milling at a speed of 200-300r / min for 72 hours.

[0046] Take out the dispersion after ball milling, pass through a 320-mesh standard sieve to remove zirconia grinding beads, and then dry the sieved material at 85°C to remove isopropanol to obtain Li 7 La 3 Zr 2 o 12 Powder.

[0047] From figure 1 Middle Li 7 La 3 Zr 2 o 12 As can be seen from the XRD test results of the powder, it is similar to the cubic phase Li 7 La 3 Zr 2 o 12 Corresponding to the standard spectrum (PDF80-0457), it proves that the Li 7 La 3 Zr 2 o 12 The powder is cubic phase. Further, from figure 1 It can be seen from the particle size distribution diagram in that Li 7 La 3 Zr 2 o 12 The particle size of the powder is between 142-295nm.

[0048] Weigh Li 7 La 3...

Embodiment 2

[0053] Weigh Li 7 La 3 Zr 2 o 12 Disperse 14g of solid electrolyte in 22mL of isopropanol, add the dispersion liquid and 70g of zirconia grinding beads with a diameter of 0.3mm into the ball mill jar, and disperse by ball milling at a speed of 200-300r / min for 85 hours.

[0054] Take out the dispersion after ball milling, pass through a 320-mesh standard sieve to remove zirconia grinding beads, and then dry the sieved material at 85°C to remove isopropanol to obtain Li 7 La 3 Zr 2 o 12 Powder.

[0055] Weigh Li 7 La 3 Zr 2 o 12 Powder 4.6g, acrylic resin binder 0.04g, dispersing aid 0.05mL isopropanol was added dropwise and mechanically mixed to obtain Li 7 La 3 Zr 2 o 12 Powder mixture.

[0056] Dispersant polyacrylamide 4.1g is dispersed in 100mL water to obtain dispersion medium; Above-mentioned Li 7 La 3 Zr 2 o 12 The powder mixture is ultrasonically dispersed in the dispersion medium to prepare Li 7 La 3 Zr 2 o 12 ceramic ink.

Embodiment 3

[0058] Weigh Li 7 La 3 Zr 2 o 12 Disperse 16g of solid electrolyte in 24mL of isopropanol, add the dispersion together with 70g of zirconia grinding beads with a diameter of 0.3mm into a ball mill jar, and ball mill for 100 hours at a speed of 200-300r / min for dispersion.

[0059] Take out the dispersion after ball milling, pass through a 320-mesh standard sieve to remove zirconia grinding beads, and then dry the sieved material at 85°C to remove isopropanol to obtain Li 7 La 3 Zr 2 o 12 Powder.

[0060] Weigh Li 7 La 3 Zr 2 o12 Powder 5.5g, acrylic resin binder 0.05g, dispersing aid 2-butanol 0.06mL was added dropwise and mechanically mixed to obtain Li 7 La 3 Zr 2 o 12 Powder mixture.

[0061] Dispersant polyacrylamide 7.5g is dispersed in 100mL water to obtain dispersion medium; Above-mentioned Li 7 La 3 Zr 2 o 12 The powder mixture is ultrasonically dispersed in the dispersion medium to prepare Li 7 La 3 Zr 2 o 12 ceramic ink.

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Abstract

The invention discloses a water-dispersible functional ceramic ink, which is obtained by dispersing a Li7La3Zr2O12 powder mixture in a polyacrylamide aqueous solution dispersion medium, the viscosity of the ceramic ink is 3-5 mPa.s, the surface tension of the Li7La3Zr2O12 ceramic ink is 55-65 mN / m, and the Li7La3Zr2O12 powder mixture is obtained by mixing 96-98 parts by weight of Li7La3Zr2O12 powder, 0.6-1.9 parts by weight of an acrylic resin binder and 0.6-1.9 parts by weight of an alcohol dispersing aid. The water-dispersible functional ceramic ink disclosed by the invention has excellent stability and can be used for preparing a Li7La3Zr2O12 solid electrolyte film.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional ceramic materials, and relates to a water-dispersible ceramic ink, in particular to a ceramic ink for preparing a solid electrolyte film. Background technique [0002] The current lithium-ion batteries mainly use organic electrolytes. When the battery is abused, overheated or internally short-circuited, it is easy to cause thermal runaway, which can cause fire or even explode. [0003] The use of solid electrolytes instead of liquid organic electrolytes to assemble solid-state lithium batteries is expected to essentially solve the safety problems of existing liquid lithium-ion batteries. At the same time, based on the non-volatile characteristics of solid electrolytes under high vacuum conditions, all-solid-state batteries prepared with them have potential application value in the aerospace field. [0004] Common solid electrolytes are divided into polymer solid electrolytes and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/02C09D11/03C09D11/30H01M10/0525H01M10/0562
CPCC09D11/02C09D11/03C09D11/30H01M10/0562H01M10/0525H01M2300/0071Y02E60/10
Inventor 陈志萍杨晓峰孙振豪景红霞乔晋忠李巧玲
Owner ZHONGBEI UNIV