Flexible electrode, capacitor and preparation method

Abstract

The invention belongs to the field of micro-nano manufacturing and new energy, and discloses a flexible electrode, a capacitor and a preparation method, in the flexible electrode, an electrochemical functional material is distributed on a PU-CNT conductive film substrate, wherein the PU-CNT conductive thin film substrate comprises a PU thin film substrate and a CNT conductive network, the PU thinfilm substrate is of a net structure, carbon nanotubes are distributed on the fiber surface of the PU thin film substrate, and the carbon nanotubes distributed on the PU thin film substrate form the CNT conductive network. In the capacitor, flexible electrodes are bonded to the two surfaces of a gel electrolyte interlayer, the flexible electrodes and the gel electrolyte interlayer form a sandwichsuper capacitor structure, flexible packaging protection layers are attached to the two surfaces of the sandwich super capacitor structure, and the flexible electrodes on the two sides of the gel electrolyte interlayer are connected with electrode outgoing lines. The flexible electrode provided by the invention has excellent ductility, and the flexibility of the capacitor can be improved, so thatthe flexible wearable device has excellent flexibility.

Description

technical field [0001] The invention belongs to the field of micro-nano manufacturing and new energy, and specifically relates to a flexible electrode, a capacitor and a preparation method. Background technique [0002] With the continuous development of portable and flexible electronic products, the demand for flexible high-performance energy storage devices in human society is increasing, and how to prepare high-performance, low-cost wearable energy storage devices has attracted more and more attention. Energy storage devices such as batteries are limited by defects such as low power density, short service life, and long charging and discharging time, and their development is restricted. As a new type of energy storage device, supercapacitors can provide extremely high power density, and at the same time have the advantages of long cycle life and short charge and discharge time, and have been widely studied by scientists in recent years. [0003] However, the ductility of...

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Problems solved by technology

[0003] However, the ductility of flexible supercapacitors at this stage is not enough to meet the needs of flexible portable electronic products, and the main reason for the lack of ductility of flexible supercapacitors is that the electrodes of flexible supercapacitors are not sufficiently ductile

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