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MXene/silver nanowire/nanocellulose composite film and preparation method thereof

A technology of nanocellulose and silver nanowires, which is applied in the direction of nanotechnology, nanotechnology, cable/conductor manufacturing, etc., can solve the problems that electrochemical performance and mechanical performance cannot be combined, performance cannot be further improved, and preparation is complicated, etc., to achieve excellent Electrochemical performance and electromagnetic shielding performance, expanding the scope of use, and the effect of a wide range of sources

Inactive Publication Date: 2021-07-09
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides MXene / silver nanowire / nanocellulose composite film and its preparation method, and its purpose is to solve the problem that the performance cannot be further improved due to the stacking of MXene nanosheets
In addition, the current electrochemical and mechanical properties of thin film materials cannot be combined, the function is single, and the preparation is complicated, which also limits the development of this field.

Method used

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  • MXene/silver nanowire/nanocellulose composite film and preparation method thereof
  • MXene/silver nanowire/nanocellulose composite film and preparation method thereof
  • MXene/silver nanowire/nanocellulose composite film and preparation method thereof

Examples

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Embodiment 1

[0047] A kind of MXene / silver nanowire / nanocellulose composite film and preparation method thereof, comprising the following process steps:

[0048] (1) Slowly dissolve 1.6g of lithium fluoride in 20mL of 9M hydrochloric acid, stir for 10min to obtain a clear corrosion solution; slowly add 1g of Ti to the corrosion solution 3 AlC 2 , stirred at 45°C for 24 hours, washed with deionized water and centrifuged 7 times at a centrifugal speed of 3500rpm, centrifuged for 5min each time, until the pH value of the supernatant was greater than 6; collected the precipitate, dissolved in 100mL deionized water, and placed in an argon atmosphere Ultrasound for 3 hours; centrifuge the ultrasonic solution for 1.5 hours at a speed of 3500 rpm, and collect the supernatant as a single-layer MXene colloidal solution; take a certain amount of the obtained solution, vacuum-assisted suction filtration through a 0.22 μm microporous filter membrane, and Dry under nitrogen protection, weigh the qualit...

Embodiment 2

[0055] A kind of MXene / silver nanowire / nanocellulose composite film and preparation method thereof, comprising the following process steps:

[0056] (1) Slowly dissolve 1.8g lithium fluoride in 25mL 9M hydrochloric acid, stir for 10min to obtain a clear corrosion solution; slowly add 1.2g Ti to the corrosion solution 3 AlC 2 , stirred at 45°C for 28 hours, washed with deionized water and centrifuged 8 times at a centrifugal speed of 3500rpm, centrifuged for 5min each time, until the pH value of the supernatant was greater than 6; collected the precipitate, dissolved in 100mL deionized water, and placed in an argon atmosphere Ultrasound for 3.5 hours; centrifuge the ultrasonic solution for 1.5 hours at a speed of 3500 rpm, and collect the supernatant as a single-layer MXene colloidal solution; take a certain amount of the obtained solution, vacuum-assisted suction filtration through a 0.22 μm microporous filter membrane, and Dry under nitrogen protection, weigh the quality dif...

Embodiment 3

[0063] A kind of MXene / silver nanowire / nanocellulose composite film and preparation method thereof, comprising the following process steps:

[0064] (1) Slowly dissolve 1.5g of lithium fluoride in 15mL of 9M hydrochloric acid, stir for 10min to obtain a clear corrosion solution; slowly add 0.8g of Ti to the corrosion solution 3 AlC 2 , stirred at 45°C for 20 hours, washed and centrifuged 6 times with deionized water at 4000rpm, centrifuged for 5 minutes each time, until the pH value of the supernatant was greater than 6; collected the precipitate, dissolved in 80mL deionized water, and placed in an argon atmosphere Sonicate for 3 hours; centrifuge the ultrasonic solution for 1 hour at a speed of 4000 rpm, and collect the supernatant as a single-layer MXene colloidal solution; take a certain amount of the obtained solution, vacuum-assisted filtration through a 0.22 μm microporous filter membrane, and store in nitrogen Dry under protection, weigh the quality difference before a...

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Abstract

The invention discloses an MXene / silver nanowire / nanocellulose composite film and a preparation method thereof. The method mainly comprises the following steps: (1) etching MAX to prepare a single-layer MXene colloidal solution; (2) preparing a silver nanowire colloidal solution; (3) preparing a carboxylated nanocellulose colloidal solution by a TEMPO oxidation method; (4) mixing the three colloidal solutions according to a certain mass ratio, conducting stirring and carrying out ice-bath ultrasonic treatment to obtain a uniform mixed solution; and (5) carrying out vacuum suction filtration on the mixed solution, and carrying out hot-pressing drying to obtain the MXene / silver nanowire / nanocellulose composite film. According to the preparation method of the MXene / silver nanowire / nanocellulose composite film, the prepared composite film has good flexibility, electrochemical performance, electromagnetic shielding performance and antibacterial performance, and has wide application prospects in the fields of aerospace, weaponry, flexible wearable equipment and the like.

Description

technical field [0001] The invention relates to the technical field of energy materials, in particular to an MXene / silver nanowire / nanocellulose composite film and a preparation method thereof. Background technique [0002] In recent years, flexible wearable electronic devices have broad prospects in the application fields of portable mobile electronic devices, new energy storage devices, and human motion detection, and have attracted extensive attention from researchers. A large amount of research has been devoted to the development of materials with different structures and functions, especially in the fields of sensors, supercapacitors, and electromagnetic shielding. Therefore, optimize the design principles of flexible wearable materials, develop sensors with good linearity, high sensitivity and wide working range; develop multifunctional wearable devices that integrate good mechanical properties, electrochemical properties, anti-mold and antibacterial properties, and go...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/04C08K7/00C08K7/06C08J5/18H01B13/00B82Y30/00B82Y40/00
CPCC08J5/18H01B13/00B82Y30/00B82Y40/00C08J2301/04C08K7/00C08K7/06C08K2201/011C08K2201/001
Inventor 刘毅王蓓蓓孙璟萌赵俊淇张伟业李彦辰郭洪武
Owner BEIJING FORESTRY UNIVERSITY
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