MOFs (Metal Organic Frameworks)-based gel electrolyte and preparation and application thereof

A gel electrolyte and electrolyte technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of poor ionic conductivity and mechanical properties, achieve excellent discoloration performance, high practical application value, and overcome room temperature ionic conductivity lower effect

Active Publication Date: 2020-07-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a MOFs-based gel electrolyte and its preparation method and application, so as to overcome the defects of poor ionic conductivity and mechanical properties of the gel electrolyte in the prior art

Method used

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  • MOFs (Metal Organic Frameworks)-based gel electrolyte and preparation and application thereof
  • MOFs (Metal Organic Frameworks)-based gel electrolyte and preparation and application thereof
  • MOFs (Metal Organic Frameworks)-based gel electrolyte and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) After dissolving 57.42g LiTFSI in 100mL PC, a 2mol / L LiTFSI / PC solution was obtained, and then 60mL of this solution was blended with 10mL [Emim][TFSI] to obtain a transparent electrolyte;

[0042] (2) 4.36g Zn(NO 3 ) 2 ·6H 2 0, 6.16g Hmim were dissolved in 300mL EtOH (molar ratio 1:5:700), respectively, to prepare solution A and solution B. After that, solution A was quickly poured into solution B, and after 45 minutes of magnetic stirring, the MOFs dispersion was obtained, and then centrifuged at 5000rpm / min for 12 minutes, and the supernatant was poured off to obtain the MOFs white pre-gel;

[0043] (3) Spread the MOFs pre-gel obtained in step (2) on a surface with a volume of 1.0 cm 3 In the groove, add 1.0mL transparent electrolyte obtained in step (1) dropwise on the surface of MOFs pre-gel, let it stand for 1h, and heat it at 80℃ for 14h with a vacuum degree of -0.10MPa to obtain the MOFs-based gel electrolyte .

[0044] The preparation process of the MO...

Embodiment 2

[0049] (1) 1.52g LiPF 6 After dissolving in 100mL EC, 0.1mol / L LiPF was obtained 6 / EC solution, after which 30mL of this solution was mixed with 10mL [Emim][BF 4 ] blending to obtain a transparent electrolyte;

[0050] (2) 5.82g Zn(NO 3 ) 2 ·6H 2 0 and 4.82g Hmim were dissolved in 400mL EtOH (three molar ratios were 1:3:700), respectively, to prepare solution A and solution B. After that, solution A was quickly poured into solution B, and after 90 minutes of magnetic stirring, the MOFs dispersion was obtained, and then centrifuged at 12,000 rpm / min for 4 minutes, and the supernatant was poured off to obtain the MOFs white pre-gel;

[0051] (3) Spread the MOFs pre-gel obtained in step (2) on a surface with a volume of 2.0 cm 3 Add 8.0mL of transparent electrolyte obtained in step (1) dropwise to the surface of MOFs pre-gel, let it stand for 3 hours, and heat at 90℃ for 8 hours with a vacuum degree of –0.06MPa to obtain the MOFs-based gel electrolyte. .

[0052] The app...

Embodiment 3

[0055] (1) 10.64g LiClO 4 After dissolving in 100mL PC, 1mol / L LiClO was obtained 4 / PC solution, then mix 50 mL of this solution with 5 mL of [Emim][BF 4 ] blending to obtain a transparent electrolyte;

[0056] (2) 2.911g Zn(NO 3 ) 2 ·6H 2 0, 6.427g Hmim were dissolved in 200mL EtOH (three molar ratios were 1:8:700), respectively, to prepare solution A and solution B. After that, solution A was quickly poured into solution B, and after magnetic stirring for 60 minutes, the MOFs dispersion was obtained, and then centrifuged at 8000rpm / min for 8 minutes, and the supernatant was poured off to obtain the MOFs white pre-gel;

[0057] (3) Spread the MOFs pre-gel obtained in step (2) on a surface with a volume of 2.0 cm 3 Add 4.0mL of the transparent electrolyte obtained in step (1) dropwise to the surface of the MOFs pre-gel, let it stand for 2 hours, and heat at 80°C for 12 hours with a vacuum of –0.08MPa to obtain the MOFs-based gel electrolyte. .

[0058] There is no big...

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Abstract

The invention relates to an MOFs (Metal Organic Frameworks)-based gel electrolyte and a preparation method and application thereof. The electrolyte comprises the following components: an MOFs materialand a transparent electrolyte. The preparation method comprises the following steps of preparing the transparent electrolyte; preparing MOFs pre-gel and preparing the MOFs-based gel electrolyte. Theelectrolyte overcomes the self defects of liquid and solid electrolytes, and has high transparency and ionic conductivity and good interface adhesion; an electrochromic device, especially a flexible device, assembled by the electrolyte is good in discoloration performance, excellent in mechanical property, resistant to bending, capable of being sheared and drilled, and even capable of stably working during bending-discoloration synchronous operation, and has extremely high practical application value.

Description

technical field [0001] The invention belongs to the field of electrochromic device electrolyte and its preparation and application, and in particular relates to a MOFs-based gel electrolyte and its preparation method and application. Background technique [0002] Electrochromic Devices (ECDs) based on rigid conductive glass have been industrialized in the fields of building energy-saving windows and anti-glare rearview mirrors. The flexible ECDs developed based on flexible conductive films are still in the research and development stage, but they have broad application prospects in flexible display, visual inspection, smart wearable and other fields (Energy Technol. 2018, 6, 33-45). Electrochromic devices generally have a layer-by-layer structure, including a conductive layer, an electrochromic layer, an electrolyte layer, an ion storage layer, and a counter electrode layer. Among them, the electrolyte layer, as the medium for ion transmission during the discoloration proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1506G02F1/1523G02F1/1516G02F1/153
CPCG02F1/1506G02F1/1523G02F1/153G02F1/1516
Inventor 王宏志白智元李耀刚侯成义张青红
Owner DONGHUA UNIV
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