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Flexible stretchable electrode material and preparation method thereof

A kind of electrode material and flexible technology, applied in the direction of cable/conductor manufacturing, circuit, electrical components, etc., can solve the problems of cost reduction, poor electrode ductility, etc., and achieve the effect of reducing preparation cost, simple operation and abundant output

Active Publication Date: 2021-09-17
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention provides a flexible and stretchable electrode material and a preparation method thereof. The insulating nanocellulose (CNF) in the CNF-C transparent hydrogel is used as a three-dimensional skeleton, and the C micro-nano particles and dissolved C Na + or K + , Cl + The ions are the common conductive phase, and after being uniformly dispersed, a viscous liquid conductive gel is obtained. The conductive gel is injected into the elastic matrix for coating, and a flexible stretchable electrode can be obtained. The stretchable electrode prepared by the present invention The electrode material solves the problem of poor ductility of traditional metal electrodes in the field of flexible electronics, enabling it to have a stretchability that matches the working modules of electronic devices, and meet the technical requirements for overall flexibility of components, and the required raw materials are cheap and easy to obtain. greatly reduced cost

Method used

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  • Flexible stretchable electrode material and preparation method thereof
  • Flexible stretchable electrode material and preparation method thereof
  • Flexible stretchable electrode material and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] Dissolve 1 gram of CNF powder with a length of 1-3 μm and a diameter of 4-10 nm in 99 ml of deionized water, stir at 15,000 rpm for 7 minutes, and then disperse into a CNF-C transparent hydrogel. Take 10 grams of CNF-C transparent hydrogel, add 1 gram of C micro-nano particles with a particle size of 100 μm, and 2 grams of NaCl crystals, and stir to form a uniform and stable C / CNF-C / NaCl conductive gel. The C / CNF-C / NaCl conductive gel has viscous fluidity, and the conductivity is 7.4S / m.

[0037]A 20 mm x 5 mm square area was isolated on the PET substrate with 3M insulating tape with a thickness of 3 mm. Set a metal rod with an outer diameter of 1 mm and a circular cross section in the middle of the square area, and fix the two ends so that the metal rod is suspended in the air. Mix the two-component epoxy resin at room temperature and pressure at A:B=1:1 and pour it into the square area until it is flush with the 3M tape. A generally refers to the main agent, and B g...

Embodiment 2

[0044] The difference between this embodiment and embodiment 1 lies in that the content of C micro-nano particles is different.

[0045] Dissolve 1 gram of CNF powder with a length of 1-3 μm and a diameter of 4-10 nm in 99 grams of deionized water, stir at 15,000 rpm for 7 minutes, and then disperse into a CNF-C transparent hydrogel. Take 10 grams of CNF-C transparent hydrogel, add 0.7 grams of C micro-nano particles with a particle size of 100 μm, and 2 grams of NaCl crystals, and stir to form a uniform and stable C / CNF-C / NaCl conductive gel. The C / CNF-C / NaCl conductive gel has viscous fluidity, and the conductivity is 6S / m.

[0046] A 20 mm x 5 mm square area was isolated on the PET substrate with 3M insulating tape with a thickness of 3 mm. Set a metal rod with an outer diameter of 1 mm and a circular cross section in the middle of the square area, and fix the two ends so that the metal rod is suspended in the air. Mix the two-component epoxy resin at room temperature and...

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Abstract

The invention discloses a flexible stretchable electrode and a preparation method thereof. The method is characterized in that insulated nano cellulose (CNF) in CNF-C transparent hydrogel is used as a three-dimensional skeleton, C micro-nano particles carried on the surface of the CNF and dissolved Na < + > or K < + > and Cl < + > ions are used as a common conductive phase, and liquid conductive gel with viscous flow property is obtained after uniform dispersion; and the conductive gel is injected into an elastic matrix for wrapping to obtain the flexible stretchable electrode. According to the stretchable electrode material prepared by the method, the problem that a traditional metal electrode is poor in ductility in the field of flexible electronics is solved, so that the stretchable electrode material has the stretchable capacity matched with an electronic device working module, and technical requirement for overall flexibility of the component is reached; and moreover, the required raw materials are low in cost and easy to obtain, so that the cost is greatly reduced.

Description

technical field [0001] The invention relates to the field of flexible electronic devices, more specifically, it relates to a flexible and stretchable electrode material and a preparation method thereof. Background technique [0002] As an emerging interdisciplinary science with broad application prospects, flexible electronics mainly studies high-performance flexible electronic materials and devices that work under large strain conditions. Electrodes are an integral part of this type of electronics. At present, the most common electrode materials are various metals and their alloys, oxide semiconductor thin films, etc., such as silver glue (Ag) and indium tin oxide (ITO). The good conductivity makes them occupy the field of flexible electronics for decades. leading position. However, these common electrode materials cannot meet the mechanical flexibility requirements of future wearable and flexible electronics. Flexible electrodes applied on elastomeric substrates need to...

Claims

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Application Information

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IPC IPC(8): H01B1/06H01B13/00
CPCH01B1/06H01B13/00Y02E60/13
Inventor 韦达飞徐旻轩张骐李馨郑鑫史月琴
Owner HANGZHOU DIANZI UNIV