Preparation method of composite solid electrolyte based on metal organic framework/ionic liquid

A metal-organic framework, solid-state electrolyte technology, applied in solid electrolytes, non-aqueous electrolytes, circuits, etc., can solve the problems of poor performance of composite solid-state electrolytes, unable to meet the needs of high-performance solid-state lithium batteries, etc. Effects of interfacial contact, growth inhibition

Pending Publication Date: 2020-05-19
JIANGSU UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the composite solid electrolyte prepared by the above technology is still unsatisfactory, which cannot meet the needs of high-performance solid-state lithium batteries.

Method used

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  • Preparation method of composite solid electrolyte based on metal organic framework/ionic liquid
  • Preparation method of composite solid electrolyte based on metal organic framework/ionic liquid
  • Preparation method of composite solid electrolyte based on metal organic framework/ionic liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 3.93 g of copper nitrate trihydrate and 2.15 g of trimesic acid in 500 mL of methanol, stir evenly, and after standing at room temperature for 24 hours, centrifuge, wash and dry to obtain HKUST-1 material; After body grinding, place in a vacuum oven at 150 o C further activated to remove the moisture in the channel, and then the activated HKUST-1 material was placed in an argon-filled glove box for storage.

[0028] (2) Weigh 1.00 g LiTFSI dissolved in 5.45 g [EMIM + ][TFSI - ], stirred for 12 hours to obtain a lithium-containing ionic liquid, denoted as Li-IL, and stored in an argon-filled glove box.

[0029] (3) In an argon-filled glove box, drop 1.80 g Li-IL onto 0.80 g activated HKUST-1 powder drop by drop, and grind continuously so that Li-IL is completely perfused into the pores of HKUST-1 within the road, and on 120 o C was further vacuum-dried for 24 hours to obtain Li-IL@HKUST-1, as figure 1 As shown, the prepared Li-IL@HKUST-1 presents a regu...

Embodiment 2

[0033] (1) Dissolve 3.93 g of copper nitrate trihydrate and 2.15 g of trimesic acid in 500 mL of methanol, stir evenly, and after standing at room temperature for 24 hours, centrifuge, wash and dry to obtain HKUST-1 material; After body grinding, place in a vacuum oven at 150 o C further activated to remove the moisture in the channel, and then the activated HKUST-1 material was placed in an argon-filled glove box for storage.

[0034] (2) Weigh 1.00 g LiTFSI dissolved in 5.45 g [EMIM + ][TFSI - ], stirred for 12 hours to obtain a lithium-containing ionic liquid, denoted as Li-IL, and stored in an argon-filled glove box.

[0035] (3) In an argon-filled glove box, drop 1.80 g Li-IL onto 0.80 g activated HKUST-1 powder drop by drop, and grind continuously so that Li-IL is completely perfused into the pores of HKUST-1 within the road, and on 120 o C was further vacuum-dried for 24 hours to obtain Li-IL@HKUST-1, as figure 1 As shown, the prepared Li-IL@HKUST-1 presents a regu...

Embodiment 3

[0039] (1) Dissolve 3.93 g of copper nitrate trihydrate and 2.15 g of trimesic acid in 500 mL of methanol, stir evenly, and after standing at room temperature for 24 hours, centrifuge, wash and dry to obtain HKUST-1 material; After body grinding, place in a vacuum oven at 150 o C further activated to remove the moisture in the channel, and then the activated HKUST-1 material was placed in an argon-filled glove box for storage.

[0040] (2) Weigh 1.00 g LiTFSI dissolved in 5.45 g [EMIM + ][TFSI - ], stirred for 12 hours to obtain a lithium-containing ionic liquid, denoted as Li-IL, and stored in an argon-filled glove box.

[0041] (3) In an argon-filled glove box, drop 1.80 g Li-IL onto 0.80 g activated HKUST-1 powder drop by drop, and grind continuously so that Li-IL is completely perfused into the pores of HKUST-1 within the road, and on 120 o C was further vacuum-dried for 24 hours to obtain Li-IL@HKUST-1, as figure 1 As shown, the prepared Li-IL@HKUST-1 presents a regu...

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PUM

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Abstract

The invention relates to a preparation method and application of a composite solid electrolyte based on a metal organic framework / ionic liquid. The preparation method comprises the following steps: preparing a novel composite filler based on a metal organic framework / ionic liquid, uniformly stirring the composite filler, a polymer matrix and a lithium salt in an organic solvent, pouring the mixture on a template, and carrying out blade coating to form a film, thereby obtaining the composite solid electrolyte. The preparation method has the advantages that the ionic conductivity of the solid-state electrolyte can be effectively improved, and the lithium dendritic crystal inhibition capability is improved; and in an assembled all-solid-state lithium battery, relatively good long cycle performance and rate capability are shown, wide production and application of the all-solid-state battery are facilitated, and the all-solid-state battery has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of all-solid-state lithium batteries, in particular to a method for preparing a metal-organic framework / ionic liquid composite solid-state electrolyte. Background technique [0002] Lithium-ion batteries have received widespread attention due to their high energy density, long cycle life, low self-discharge rate, no memory effect, fast charge and discharge, and environmental friendliness. However, traditional lithium-ion batteries use liquid electrolytes, which have Volatile, flammable, explosive and other shortcomings will cause many safety hazards. The use of all-solid-state lithium batteries can avoid safety issues and can effectively inhibit the growth of lithium dendrites. Therefore, all-solid-state lithium batteries can use metal lithium instead of traditional graphite materials to achieve physical series connection inside the battery to increase the voltage of the cells and increase the energy of the battery. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0565H01M10/0525
CPCH01M10/0565H01M10/0525H01M2300/0082Y02E60/10
Inventor 袁爱华王志涛周虎
Owner JIANGSU UNIV OF SCI & TECH
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