Flexible piezoelectric energy harvesting device based on plant fiber and its preparation method

Abstract

The invention discloses a flexible piezoelectric energy harvesting device based on plant fibers and a preparation method thereof, comprising: a fiber-based piezoelectric functional film, an insulating layer, a fiber-based electrode, and a packaging layer; wherein, the upper and lower surfaces of the fiber-based piezoelectric functional film are respectively pasted The first insulating layer and the second insulating layer are combined, the first fiber-based electrode is attached to the upper surface of the first insulating layer, and the second fiber-based electrode is attached to the lower surface of the second insulating layer; Film, the first insulating layer, the second insulating layer, the first fiber-based electrode, and the second fiber-based electrode are encapsulated; the first insulating layer, the second insulating layer, and the encapsulating layer are all made of ECOFLEX series silicone rubber The fiber-based piezoelectric functional film, the first fiber-based electrode, and the second fiber-based electrode all use plant fibers as the base; the realized device has excellent flexibility and can be completely attached to various parts of the human body. And has good biocompatibility and comfort.

Description

technical field [0001] The invention relates to the field of flexible piezoelectric energy collection, in particular to a plant fiber-based flexible piezoelectric energy collection device and a preparation method thereof. Background technique [0002] Today's society is in the wave of the electrification revolution and the information revolution, and various electrical and electronic devices have become the cornerstone of social production and life. The miniaturization of traditional energy harvesting devices and the battery life of traditional electronic energy storage devices are now restricting the development of a new generation of electronic devices—wearable electronic devices. At the same time, traditional energy harvesting equipment will generate a large amount of industrial wastewater and waste gas while energy harvesting, and traditional energy storage equipment will also cause heavy metal pollution during its preparation and scrapping. Seeking a flexible, miniatur...

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Problems solved by technology

However, the current piezoelectric energy harvesting devices usually use artificial polymers as the substrate of the piezoelectric film and metals as the electrodes of the energy harvesting device, resulting in the entire device not being biodegradable and causing great harm to the environment.

For example [Kunming Shi, Pingkai Jiang. Synergistic Effect of GrapheneNanosheet and BaTiO3Nanoparticles on Performance Enhancement of ElectrospunPVDF Nanofiber Mat for Flexible Piezoelectric Nanogenerators. NanoEnergy. Substrate, a piezoelectric energy harvesting device with aluminum foil as an electrode, although it is flexible, the process is complex, the material is expensive, and it does not have biodegradable properties

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