CN-121356373-B - Reinforced photovoltaic power generation device and preparation method thereof

CN121356373BCN 121356373 BCN121356373 BCN 121356373BCN-121356373-B

Abstract

The invention discloses an enhanced photovoltaic power generation device and a preparation method thereof, and belongs to the technical field of water evaporation power generation. The reinforced photovoltaic power generation device comprises a substrate and reduced graphene oxide fibers loaded on the substrate, wherein two ends of the substrate are connected with conductive parts, the reduced graphene oxide fibers are compounded with high-molecular conductive polymers, and the high-molecular conductive polymers are prepared from poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductive performance. The reinforced photovoltaic power generation device can effectively improve the structural stability of the reduced graphene oxide material under the long-term hydration, avoid or reduce the occurrence of structural expansion or peeling phenomenon, and enhance the structural stability of the material. The poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) and the reduced graphene oxide form a three-dimensional continuous conductive path, so that interface contact resistance is reduced, and the electron migration rate of the photovoltaic power generation device is accelerated, and the power generation performance of the device is improved.

Inventors

SUN YINGHUI
ZHANG SIFAN
JIANG LIN
ZHANG JUNCHANG

Assignees

苏州大学

Dates

Publication Date: 20260512
Application Date: 20251217

Claims (4)

1. A method of manufacturing an enhanced photovoltaic power generation device, comprising: Uniformly dispersing graphene oxide in deionized water, and reducing the graphene oxide by using a reducing agent to obtain reduced graphene oxide slurry, carrying out suction filtration on the reduced graphene oxide slurry to obtain reduced graphene oxide ink in an ink state for 3D printing, 3D printing a fibrous structure by using the reduced graphene oxide ink, and carrying out freeze-curing and freeze-drying on the fibrous structure to obtain reduced graphene oxide fibers, wherein the reduced graphene oxide fibers have a porous structure; Mixing poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with ethanol solution, performing ultrasonic treatment, separating polystyrene sulfonate from poly (3, 4-ethylenedioxythiophene) chains through the ethanol solution, and adsorbing polar solution molecules on the surfaces of poly (3, 4-ethylenedioxythiophene) particles to obtain poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced electric conductivity, wherein the volume ratio of the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution to the ethanol solution is 1:0.1 to 1:10, and the mass fraction of the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution is 0.05 to 1.0 percent; Dropping a poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductivity on the reduced graphene oxide fiber, penetrating the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductivity into the porous structure of the reduced graphene oxide fiber, rearranging the reduced graphene oxide sheets to ensure that the reduced graphene oxide fiber is integrally contracted, wrapping the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductivity into the reduced graphene oxide fiber, and volatilizing the solvent to obtain the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate)/reduced graphene oxide fiber; And bonding copper leads at two ends of the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate)/reduced graphene oxide fiber by using carbon glue to serve as an upper electrode and a lower electrode, wherein the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) and the reduced graphene oxide form a three-dimensional continuous conductive path, and the reinforced photovoltaic power generation device is obtained.
2. The reinforced photovoltaic power generation device prepared by the preparation method of the reinforced photovoltaic power generation device according to claim 1, which is characterized by comprising a substrate and reduced graphene oxide fibers loaded on the substrate, wherein the two ends of the substrate are connected with conductive parts, and the reduced graphene oxide fibers are compounded with a high-molecular conductive polymer which is prepared from a poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductive performance.
3. Use of the enhanced photovoltaic power generation device prepared by the method for preparing an enhanced photovoltaic power generation device according to claim 1 or the enhanced photovoltaic power generation device according to claim 2 for water evaporation power generation.
4. The water evaporation power generation method is characterized in that the reinforced photovoltaic power generation device prepared by the reinforced photovoltaic power generation device preparation method according to claim 1 or the reinforced photovoltaic power generation device according to claim 2 is placed in water, so that water molecules are contacted with a composite material interface formed by compositing reduced graphene oxide fibers and a high-molecular conductive polymer to form a charged interface, and ions are driven to directionally migrate through evaporation or flow to generate a potential difference, so that water evaporation power generation is realized.

Description

Reinforced photovoltaic power generation device and preparation method thereof Technical Field The invention relates to an enhanced photovoltaic power generation device and a preparation method thereof, and belongs to the technical field of water evaporation power generation. Background The traditional energy exploitation can influence the environment, realizes energy conversion through the spontaneous evaporation process of water molecules at the interface of the nano material, and has the advantages of environmental friendliness, strong sustainability and the like. The mechanism of water evaporation power generation is that a charged interface is formed when water molecules are contacted with the surface of a material, and evaporation or flow drives ions to directionally migrate, so that potential difference is generated. In the prior art, evaporation induction potential difference is built based on porous materials such as Graphene Oxide (GO) and carbon nano tubes, particularly reduced graphene oxide (rGO) is widely studied due to abundant surface hydrophilic groups, however, the porous structure of rGO is easy to generate structural expansion/stripping under the long-term hydration, the conductivity is limited, the electron migration rate is low, the current density and the power density are difficult to promote, meanwhile, the surface functional groups of the material are unevenly distributed, so that a solid-liquid interface double electric layer is not fully formed, and the output voltage is also unstable. Disclosure of Invention The invention aims to provide an enhanced photovoltaic power generation device and a preparation method thereof, which can improve the surface conductivity of materials, reduce interface contact resistance and improve the power generation performance of the device. In order to achieve the above purpose, the present invention provides the following technical solutions: the invention provides a reinforced photovoltaic power generation device, which comprises a substrate and reduced graphene oxide fibers loaded on the substrate, wherein two ends of the substrate are connected with conductive parts, the reduced graphene oxide fibers are compounded with high-molecular conductive polymers, and the high-molecular conductive polymers are prepared from poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductive performance. With reference to the first aspect, further, the poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonate) solution with enhanced conductivity is prepared by mixing the poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonate) solution with a polar solution. With reference to the first aspect, further, the conductive portion uses copper wires as the upper and lower electrodes. In a second aspect, the present invention provides a method for manufacturing an enhanced photovoltaic power generation device, comprising: Preparing a reduced graphene oxide fiber and a poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductivity; Dropping a poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced conductivity on the reduced graphene oxide fiber, and obtaining the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate)/reduced graphene oxide fiber after the solvent volatilizes; And (3) bonding copper leads at two ends of the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate)/reduced graphene oxide fiber by using carbon glue to serve as an upper electrode and a lower electrode, so as to obtain the reinforced photovoltaic power generation device. With reference to the second aspect, further, preparing the reduced graphene oxide fiber includes: Uniformly dispersing graphene oxide in deionized water, and reducing the graphene oxide by using a reducing agent to obtain reduced graphene oxide slurry; performing suction filtration on the reduced graphene oxide slurry to obtain an ink state for 3D printing, so as to obtain reduced graphene oxide ink; and 3D printing a fibrous structure by using the reduced graphene oxide ink, and performing freeze curing and freeze drying on the fibrous structure to obtain the reduced graphene oxide fiber. With reference to the second aspect, further, preparing a poly (3, 4-ethylenedioxythiophene) -poly (styrenesulfonate) solution having enhanced conductivity comprises: mixing the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with a polar solution, and performing ultrasonic treatment to separate the polystyrene sulfonate from the poly (3, 4-ethylenedioxythiophene) chains through the polar solution to obtain the poly (3, 4-ethylenedioxythiophene) -poly (styrene sulfonate) solution with enhanced electric conductivity. With reference to the second aspect, further, the polar solution is an ethanol solution. With reference to the second aspect, further, the volume ratio of the poly (3, 4-ethylenedioxythiophene) -pol