Supramolecular hydrogel as well as preparation and application thereof

Abstract

The invention discloses supramolecular hydrogel as well as preparation and application thereof. The preparation method comprises the following steps: firstly, mixing supramolecular polymer monomer acrylic acid, a polyphenol derivative, FeCl3. 6H2O and inorganic salt; and adding an initiator solution into the mixed solution, and preparing by utilizing a free radical polymerization technology under an ultrasonic condition. The obtained supramolecular hydrogel has excellent ionic conductivity, and can improve the area specific capacitance, the energy density and the power density of a device when being used as an electrolyte in a solid flexible supercapacitor; in addition, the hydrogel is low in manufacturing cost, simple in preparation and application operation and easy to recycle, and can be applied to an energy device of a flexible wearable electronic device.

Description

technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a supramolecular hydrogel, a preparation method thereof, and an application of the same in an energy device of a flexible wearable electronic device. Background technique [0002] With the gradual popularization of integrated flexible wearable electronic products such as portable electronic devices, wearable electronic devices, microelectronic devices, printable electronic devices, smart textiles, and epidermal electronics, consumers have put forward higher and higher requirements for device performance. This has also prompted researchers and related manufacturers in the field to continuously explore the potential of existing materials and focus on the development of new high-performance materials; it has been found that all-solid-state supercapacitors (SSCs) composed of polymer gel electrolytes With the characteristics of being thinner, lighter, cheaper, and flexi...

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Problems solved by technology

[0006] For example, Chinese patent CN 111363072 A discloses a method for preparing a hydrogel based on a polyphenol-silver nanozyme with plasma effect, which utilizes an initiator, a monomer containing a double bond, a specific metal ion and an organic compound containing a phenolic hydroxyl group to self-polymerize. Glue, organic matter containing phenolic hydroxyl groups can effectively reduce the rigidity of the gel, and after further adjusting the concentration of silver ions, the prepared hydrogel has excellent mechanical properties. The patent also focuses on the catalytic activity of the obtained composite material , found that it can be used to catalyze the degradation of persulfate; however, no research has been focused on improving the optical transparency and electrochemical performance of this type of hydrogel materials. How to obtain gel materials with high specific power density and specific energy density is a It is not clear, so it is unknown whether it can be efficiently applied in the field of energy devices for flexible electronic wearable devices

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