KR-20260066616-A - Electrostatic generator through dielectric polarization induction and electrostatic generation method using the same

KR20260066616AKR 20260066616 AKR20260066616 AKR 20260066616AKR-20260066616-A

Abstract

An electrostatic generator through dielectric polarization induction is provided, comprising: a triboelectric unit including a first friction electrode and a second friction electrode having a stacked contact layer that forms a charge by contacting the first friction electrode; a dielectric polarization unit including a first dielectric electrode spaced apart from and facing the first friction electrode, and a second dielectric electrode facing the first dielectric electrode with a dielectric layer in between which the polarization magnitude changes locally by the charge generated in the triboelectric unit, wherein the second friction electrode and the second dielectric electrode rotate relative to the fixed first friction electrode and the first dielectric electrode.

Inventors

백정민
김도헌

Assignees

성균관대학교산학협력단

Dates

Publication Date: 20260512
Application Date: 20250901
Priority Date: 20241104

Claims (13)

A triboelectric unit comprising a first friction electrode and a second friction electrode having a stacked contact layer that contacts the first friction electrode to form a charge; and A dielectric polarization member comprising a first dielectric electrode spaced apart from and facing the first friction electrode, and a second dielectric electrode facing the first dielectric electrode with a dielectric layer in between which the polarization magnitude changes locally due to a charge generated in the triboelectric part, wherein An electrostatic generator through dielectric polarization induction, wherein the second friction electrode and the second dielectric electrode rotate relative to the fixed first friction electrode and the first dielectric electrode.
In Article 1, An electrostatic generator through dielectric polarization induction, comprising the second friction electrode, the contact layer, and the second dielectric electrode having the same cross-sectional area.
In Article 2, An electrostatic generator through dielectric polarization induction, wherein the second friction electrode, the contact layer, and the second dielectric electrode comprise a cross-sectional area smaller than that of the first friction electrode and the first dielectric electrode.
In Article 1, An electrostatic generator through dielectric polarization induction, comprising generating electrical energy continuously by relative rotation of the second friction electrode and the second dielectric electrode.
In Article 1, An electrostatic generator through dielectric polarization induction, comprising an energy storage device for storing electrical energy generated by a local change in polarization magnitude of the dielectric polarization portion, which is connected between the electrical paths of the first dielectric electrode and the second dielectric electrode.
In Article 1, An electrostatic generator through dielectric polarization induction, further comprising an insulating insertion layer inserted between the first friction electrode and the first dielectric electrode for insulating the triboelectric part and the dielectric polarization part.
In Article 1, An electrostatic generator through dielectric polarization induction, comprising maintaining output at humidity of 45% or more to 99% or less.
In Article 1, The first friction electrode and the second friction electrode comprise at least one selected from the group including copper, and The first dielectric electrode and the second dielectric electrode comprise at least one selected from the group including aluminum, and The above contact layer comprises at least one selected from the group comprising polyamide 6 ( PA6 ) and barium titanate/polyetherimide-carbon dot composites (BT/PEI-CDs), and An electrostatic generator through dielectric polarization induction, wherein the dielectric layer comprises at least one selected from the group comprising lead magnesium niobate-lead titanate (Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 ), PMN-PT) and lead zirconate titanate (Pb(Zr,Ti)O 3 ), PZT).
A step of forming a charge by contacting a second friction electrode, having a charge-forming contact layer laminated thereon, with a first friction electrode; A step in which the polarization magnitude is locally changed in a dielectric layer between a first dielectric electrode spaced apart from and facing the first friction electrode and a second dielectric electrode facing the first dielectric electrode due to the above charge; and The method includes a step in which electrical energy is generated by the change in the local polarization magnitude described above, A method for generating electrostatic power through dielectric polarization induction, wherein the second friction electrode and the second dielectric electrode rotate relative to the fixed first friction electrode and the first dielectric electrode.
In Article 9, Electric energy is instantaneously generated by the contact between the first friction electrode and the contact layer and the change in the local polarization magnitude of the dielectric layer, and A method for electrostatic power generation through dielectric polarization induction, comprising generating electrical energy continuously by relative rotation of the second friction electrode and the second dielectric electrode.
In Article 9, A method for generating electrostatic power through dielectric polarization induction, comprising the second friction electrode, the contact layer, and the second dielectric electrode having the same cross-sectional area.
In Article 9, A method for generating electrostatic power through dielectric polarization induction, wherein the second friction electrode, the contact layer, and the second dielectric electrode each have a cross-sectional area smaller than that of the first friction electrode and the first dielectric electrode.
In Article 9, A method for electrostatic power generation through dielectric polarization induction, comprising maintaining output at humidity of 45% or more to 99% or less.

Description

Electrostatic generator through dielectric polarization induction and electrostatic generation method using the same The present application relates to an electrostatic generator through dielectric polarization induction and a method for electrostatic power generation through the same, and more specifically, to an electrostatic generator through dielectric polarization induction and a method for electrostatic power generation through the same, wherein rectification losses are minimized while energy conversion efficiency is maximized. Various technologies related to electrostatic power generation have been disclosed in the past. For example, Korean Published Patent Application No. 10-2013-0079346 discloses an AC generator comprising: a rotor configured to rotate about an axis; a stator positioned radially outward from the rotor, said stator core having a front end, a rear end, an inner part configured to hold stator windings, and an outer part surrounding said inner part; a housing having the rotor and said stator within the housing, said housing having a front surface having a plurality of air inlet holes, a rear surface having a plurality of air exhaust holes, and a non-porous outer wall positioned between the front surface and the rear surface such that there are no air passages between the front surface and the rear surface of the housing; and a plurality of air passages extending along the outer part of the stator core between the front end and the rear end of the stator core. As another example, Korean Published Patent Application No. 10-2015-0126803 discloses a power generation system comprising a power generation device, a converter that converts AC power generated by the power generation device into DC power, a grid-connecting inverter that converts the DC power converted by the converter into AC power capable of being connected to a grid, and a load output unit that supplies DC or AC power to a load between the converter and the grid-connecting inverter, wherein the load output unit has an independent inverter that converts the DC power converted by the converter into AC power and outputs it to the load, and is capable of supplying power to the load even when the grid-connecting inverter is stopped. However, conventional AC-based power generation may have limitations, such as an average power loss of more than 20% during the process of converting AC to DC. Additionally, conventional AC-based power generation may have limitations, such as high impedance and low charging efficiency, due to the generation of instantaneous and high power signals. Furthermore, conventional AC-based power generation has limitations in commercialization because of low energy density and unstable output due to disturbances, and may face environmental constraints, such as the requirement to operate in low-humidity and/or unpolluted environments. Moreover, conventional AC-based power generation may have limitations, such as high impedance and low charging efficiency due to insulation breakdown mechanisms, and may have limitations in that the fundamental loss problem cannot be resolved by using rectifier circuits. Accordingly, there is a demand for power generation capable of overcoming the limitations of existing power generation. FIG. 1 is a drawing for explaining an electrostatic generator through dielectric polarization induction according to an embodiment of the present application. FIG. 2 is a diagram illustrating a method for generating electrostatic power through dielectric polarization induction according to an embodiment of the present application. FIGS. 3 and 4 are drawings for explaining the charge formation of a triboelectric part according to an embodiment of the present application. FIG. 5 is a diagram illustrating the generation of electrical energy according to an embodiment of the present application. FIG. 6 is a diagram illustrating continuous electrical energy generation according to an embodiment of the present application. FIG. 7 is a photograph of a dielectric layer according to Experimental Example 1-1 of the present application. FIG. 8 is a photograph of a structure in which a dielectric layer, a first dielectric electrode, an insulating insertion layer, and a first friction electrode are stacked according to Experimental Example 1-1 of the present application. FIG. 9 is a photograph of a structure in which a dielectric layer, a first dielectric electrode, an insulating insertion layer, and a first friction electrode are stacked, a second dielectric electrode, and a contact layer are stacked, according to Experimental Example 1-1 of the present application. FIG. 10 is a graph showing (a) a photograph of the second dielectric electrode, (b) a photograph of the contact layer and the second friction electrode, and (c) an open circuit voltage according to Experimental Example 1-1 of the present application. FIG. 11 is a graph showing (a) a photograph of the second dielectric electrode, (b) a photograph of