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Metal particle modified graphene flexible sensor and preparation method and application thereof

A flexible sensor and metal particle technology, applied in the field of sensor and its preparation and application, can solve the problems of single function, low sensitivity and poor repeatability of the flexible sensor, and achieve the effect of increasing conductive path, large specific surface area and improving conductivity

Inactive Publication Date: 2019-04-16
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a metal particle-modified graphene flexible sensor and its preparation method and application, so as to overcome the defects of single function, low sensitivity, slow response and poor repeatability of the flexible sensor in the prior art.

Method used

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  • Metal particle modified graphene flexible sensor and preparation method and application thereof
  • Metal particle modified graphene flexible sensor and preparation method and application thereof
  • Metal particle modified graphene flexible sensor and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) Disperse the platinum particle-modified graphene composite material into deionized water (1mg / mL), and ultrasonically disperse it for 0.5h; liquid, squeeze the sponge several times so that the dispersion liquid is filled into the sponge), fill the above composite material into the PDMS sponge (cutting size: length × width × height = 2cm × 2cm × 1mm); freeze-dry to obtain Platinum particle-modified graphene composite loaded PDMS conductive sponge. Repeat the above steps several times to obtain conductive sponges with different weight ratios of graphene composite materials.

[0049] (2) Take two pieces of indium tin oxide conductive glass (thickness is 1mm), use two sections of conductive copper wire to connect with two pieces of indium tin oxide conductive glass respectively to prepare conductive electrodes; then paste the prepared conductive electrodes on The upper and lower surfaces of the above-mentioned conductive sponge are prepared into flexible sensor devices...

Embodiment 2

[0053] (1) Disperse the graphene composite material modified by palladium particles in deionized water (3mg / mL), and disperse ultrasonically for 0.5h; liquid, squeeze the sponge repeatedly so that the dispersion liquid is filled into the sponge) fill the above-mentioned composite material into the polyurethane sponge (cutting size: length × width × height = 2cm × 2cm × 0.5cm); freeze-dry to obtain Polyurethane conductive sponge supported by palladium particle-modified graphene composite. Repeat the above steps once and four times to obtain conductive sponges with graphene-containing composite materials accounting for 0.5 wt% and 2.7 wt% respectively.

[0054] (2) Take two pieces of indium tin oxide conductive glass (thickness is 1mm), use two sections of conductive copper wire to connect with two pieces of indium tin oxide conductive glass respectively to prepare conductive electrodes; then paste the prepared conductive electrodes on The left and right sides of the conductive...

Embodiment 3

[0057] (1) Disperse the silver particle-modified graphene composite material into deionized water (3mg / mL), and ultrasonically disperse for 0.5h; liquid, squeeze the sponge several times so that the dispersion liquid is filled into the sponge) fill the above composite material into the PDMS sponge (cutting size: length × width × height = 1cm × 2cm × 1cm); freeze-dry to obtain silver Particle-modified graphene composite supported PDMS conductive sponge. Repeat the above steps several times to obtain conductive sponges with different weight ratios of graphene composite materials.

[0058] (2) Take two pieces of indium tin oxide conductive glass (thickness is 1mm), use two sections of conductive copper wire to connect with two pieces of indium tin oxide conductive glass respectively to prepare conductive electrodes, paste them on the upper and lower surfaces of the conductive sponge, and prepare a flexible gas sensors (such as figure 1 ).

[0059] Wherein, the preparation met...

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Abstract

The invention relates to a metal particle modified graphene flexible sensor and a preparation method and an application thereof. The sensor comprises an electrode layer and a flexible composite material layer. The preparation method comprises the steps of filling porous sponge with a metal particle modified graphene material by means of extruding and dipping, carrying out freeze drying, and coating two ends of the obtained flexible composite material layer with an electrode layer. The flexible sensor is simple in manufacturing process, low in cost, suitable for mass production of flexible devices and capable of realizing the application in electronic skin, motion tracking, wearable electronic and environment monitoring equipment.

Description

technical field [0001] The invention belongs to the field of sensors and their preparation and application, in particular to a metal particle modified graphene flexible sensor and its preparation method and application. Background technique [0002] Sensors have important applications in industry, agriculture, transportation, social life, military and other industries. In recent years, with the rapid development of wearable devices and artificial electronic skin, deformable, high-sensitivity, and multi-functional flexible sensors have become a research hotspot instead of existing hard sensors. Flexible sensors include force sensing, gas sensing, humidity sensing, etc., which have broad application prospects in wearable products, intelligent prosthetics, bionic robots and human-computer interaction interfaces, and promote the development of flexible electronic devices. The force-sensitive sensor senses the pressure signal and converts the pressure signal into an electrical s...

Claims

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Application Information

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IPC IPC(8): G01N27/12G01L1/18
CPCG01L1/18G01N27/125
Inventor 彭倚天赵秀华易旺民
Owner DONGHUA UNIV
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