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Flexible electrode of rapid heat conduction and fabrication method thereof

A flexible electrode, fast technology, used in equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., can solve problems affecting the stability and safety of electrodes and the entire device , to avoid environmental pollution or damage, maintain integrity, and facilitate miniaturization

Pending Publication Date: 2019-10-18
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, there is a huge contact resistance in nanocomposite materials, which will cause a large amount of Joule heat to be generated during the operation of the electrode; these unnecessary heat will inevitably affect the stability and safety of the electrode and the entire device

Method used

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  • Flexible electrode of rapid heat conduction and fabrication method thereof
  • Flexible electrode of rapid heat conduction and fabrication method thereof
  • Flexible electrode of rapid heat conduction and fabrication method thereof

Examples

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preparation example Construction

[0033] The specific embodiment of the present invention also provides the preparation method of the above-mentioned fast heat-conducting flexible electrode, which includes the following steps: (1) preparing the film layer precursor solution: uniformly dispersing the heat-conducting and insulating nano-material into the organic solvent, and then adding the polymer material, after stirring evenly, a film layer precursor solution is obtained; (2) preparing a flexible electrode: preparing a first film layer with the film layer precursor solution, and preparing a conductive nanomaterial matrix on the first film layer; from the Conducting wires are drawn out from the conductive nanomaterial matrix; on the side of the conductive nanomaterial matrix away from the first film layer, a second film layer is prepared with the film layer precursor solution to obtain a flexible electrode.

[0034] In some embodiments of the present invention, the organic solvent used in preparing the film lay...

Embodiment 1

[0038] This embodiment relates to a flexible electrode with fast heat conduction, which includes a first film layer, a conductive nanomaterial matrix and a second film layer which are sequentially stacked. Both the first film layer and the second film layer are casting films, both of which contain heat-conducting and insulating nano-material two-dimensional boron nitride (BN) nanosheets and macromolecular material thermoplastic polyurethane elastomer rubber ( TPU). The conductive nano-material matrix is ​​a nano-silver matrix, and wires are drawn out from the nano-silver matrix. In this embodiment, the volume percentage of boron nitride nanosheets in the first film layer and the second film layer are both 20%, and the volume percentage of thermoplastic polyurethane elastomer rubber is 80%.

[0039] The preparation steps of the fast heat-conducting flexible electrode in this embodiment are as follows:

[0040] (1) Preparation of film layer precursor solution:

[0041] The exfo...

Embodiment 2

[0048] The boron nitride nanosheets in Example 1 are replaced by silicon nitride nanowires, the polymer material adopts polydimethylsiloxane (PDMS), and the nano silver is replaced by nano gold, using the same steps as in Example 1 Preparation of thermally conductive flexible electrodes. The volume percentage of silicon nitride nanosheets in the first film layer and the second film layer is both 20%, and the volume percentage of polydimethylsiloxane is 80%.

[0049] The test results show that the electrode of this example can still maintain good electrical properties under the condition of bending and stretching 160%, and the thermal conductivity is 0.902W / m K, which is also much higher than the 0.379W / m K of the pure PDMS film. K.

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Abstract

The invention belongs to the technical scheme of wearable electronics, and discloses a flexible electrode of rapid heat conduction and a fabrication method thereof. The flexible electrode provided bythe invention comprises a first film layer, a conductive nanometer material matrix and a second film layer which are sequentially laminated, heat conduction insulation nanometer materials and high polymer materials are contained in both of the first film layer and the second film layer, and a wire is led out of the conductive nanometer material matrix. The flexible electrode provided by the invention has a sandwiched structure, the heat conduction insulation nanometer materials and the high polymer materials are uniformly dispersed in the first film layer and the second film layer to form twonanometer composite film layers having high heat conduction coefficients and favorable insulation performance, the two nanometer composite film layers are contacted with an external environment, heatgenerated by the electrode during the running process can be rapidly and timely dissipated out, the service lifetime of the electrode and the whole circuit is prolonged, and the safety of the loop andthe device is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of flexible wearable electronics, and in particular relates to a flexible electrode capable of rapid heat conduction and a preparation method thereof. Background technique [0002] With the rise of flexible electronics technology, flexible devices and devices including flexible sensors, smart displays, energy storage, soft robots, etc. have developed rapidly in recent years. These devices and devices can withstand external stress (such as bending It maintains good performance even when folded, stretched, twisted, etc.). As an important part of flexible electronic devices, the flexibility of electrodes is imperative, because the integrity of the entire flexible device can be guaranteed only when the electrodes do not break or lose their functions when they are subjected to a large external stress. [0003] Conductive polymer materials can withstand large deformations, but their weak conductivity limits their...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00C08L75/04C08K3/38C08K7/00
CPCC08K3/38C08K7/00C08K2003/385C08K2201/011C08L2207/04H01B5/14H01B13/00H01B13/0026C08L75/04
Inventor 孙彬谭岑孝朱宏泽郭文哲郭向欣龙云泽张军
Owner QINGDAO UNIV