Flexible transparent ionic gel electrode and preparation method thereof

Abstract

The invention provides a preparation method of a flexible transparent ionic gel electrode, which comprises the following steps: S1) carrying out polymerization reaction on a first acrylamide monomer and/or a first acrylic monomer in the presence of a cross-linking agent to obtain a polymer with a network structure; S2) fully soaking the polymer with the network structure in a solution containing a second acrylic monomer and/or a second acrylamide monomer for fully swelling, and then conducting heating for polymerization reaction to obtain a polymer with a dual-network structure; and S3) fully swelling the polymer with the double-network structure in an ionic solution to obtain the flexible transparent ionic gel electrode. Compared with the prior art, the preparation method is simple, and the prepared electrode has the characteristics of transparency, softness, high mechanical property and high conductivity, still has relatively high conductivity at low temperature, and can be applied to the field of electronic equipment such as flexible sensors and wearable equipment in an extreme environment.

Description

technical field [0001] The invention belongs to the technical field of flexible electrodes, in particular to a flexible transparent ion gel electrode and a preparation method thereof. Background technique [0002] With the continuous advancement of electronic technology, flexible electronic technology has been developed and developed rapidly in order to meet people's ever-increasing life and health needs, which will lead to a new intelligent revolution in the future. Flexible electrodes are the core components of flexible electronic devices, especially the flexible transparent electrodes developed in recent years play a decisive role in touch screen display, skin wearable and implantable electronic devices. [0003] Flexible transparent electrodes are generally printed on elastomer substrates, and folding, twisting, stretching, etc. are common deformation modes. In recent years, with the development of nanomaterials and polymer materials, a variety of materials that can be ...

AI Technical Summary

Problems solved by technology

[0006] However, since elastomers tend to be electrically insulating, the modification of surface elastomers may adversely affect the application of hydrogel materials in flexible electronics.

In addition, the elastomer material only physically blocks the evaporation of water in the hydrogel, and cannot combine and bind the water molecules in the hydrogel through forces such as hydrogen bonds, nor can it improve the anti-icing performance of the hydrogel.

Moreover, hydrogels and elastomers are two types of polymer materials with large differences in properties. Although the interfacial layers between them can be combined through polymerization, the two-phase interface still delaminates and falls off during long-term use.

For most organic hydrogels, the presence of organic solvents may adversely affect the conductivity of the hydrogel material, increase the material resistance, and the toxicity of organic solvents needs to be considered

[0007] Therefore, it is urgent to develop a new type of flexible transparent electrode, which can solve the problems of long-term storage and low temperature resistance.

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