Efficient energy harvesting method for regulating relaxation of double electric layers through giant flexoelectric effect of porous material

By doping porous materials with conductive micro- and nano-materials to form a conductive network, and utilizing material deformation to drive the distribution of ions in the electrolyte solution, a dynamic relaxation double-layer structure is formed. This solves the problem of insufficient energy harvesting efficiency in the flexural electrostatic energy harvesting method of porous materials, and achieves efficient and stable energy conversion, which is suitable for a variety of emerging devices.

CN121887005APending Publication Date: 2026-04-17BEIHANG UNIV
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Patent Information

Application Number
CN202512030453.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-30
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In existing flexural electrokinetic energy harvesting methods based on porous materials, the energy harvesting mechanism is mainly limited to the flexural polarization of the material itself, and the synergistic gain effect of the porous structure and the surrounding environment is not fully utilized. As a result, the electrical output is difficult to meet the power supply needs of emerging devices, which limits the portability and service life of the products.

Method used

The method of regulating double-layer relaxation by using the giant flexure electrical effect of porous materials is to form a conductive network by doping conductive micro- and nano-materials into porous materials. The deformation of the material drives the ion distribution in the electrolyte solution, forming a dynamically relaxed double-layer structure, thereby achieving efficient conversion of mechanical energy into electrical energy.

Benefits of technology

It significantly improves energy conversion efficiency, providing a highly efficient, stable, and flexible energy conversion system suitable for various applications requiring efficient energy conversion, including wearable devices, IoT sensors, wireless communication devices, and microelectromechanical systems (MEMS).

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Abstract

The invention belongs to the field of energy harvesting methods and technologies, and particularly discloses an efficient energy harvesting method for regulating relaxation of double electric layers through a porous material giant flexoelectric effect, and the method comprises the following steps: S1, preparing an energy conversion system; and S2, a cyclic load is applied to the energy conversion system, and mechanical energy is converted into electric energy. The efficient energy harvesting method for regulating and controlling relaxation of the double electric layers through the giant flexoelectric effect of the porous material is suitable for a porous polymer composite material based on doped graphene, carbon nanotubes and other micro-nano conductive materials, and by means of the giant flexoelectric effect generated when the porous material deforms, the relaxation of the double electric layers is regulated and controlled through the giant flexoelectric effect. And ion distribution in the electrolyte solution is effectively regulated and controlled, so that the efficiency of converting mechanical energy into trapped electric energy can be improved.
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