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CN-121283246-B - Photovoltaic power generation device and preparation method and application thereof

CN121283246BCN 121283246 BCN121283246 BCN 121283246BCN-121283246-B

Abstract

The invention relates to the technical field of power generation materials, and discloses a photovoltaic power generation device, a preparation method and application thereof, wherein the photovoltaic power generation device is of a strip-shaped structure, the three-dimensional size of the photovoltaic power generation device is (0.001-3) cm (0.2-20) cm, and the photovoltaic power generation device can be prepared by adopting methods of 3D printing, photo-curing printing, screen printing, electrostatic spinning, casting and the like. The prepared photovoltaic power generation device has small size, high water transmission efficiency and evaporation rate and high output density, and can amplify the performance by connecting 1 or more photovoltaic power generation devices in parallel or in series, so that the electrical performance of the integrated module is improved, and the integrated module is suitable for large-scale practical application.

Inventors

  • JIANG LIN
  • WU MIAO
  • PENG MEIWEN
  • SUN YINGHUI
  • CHI LIFENG

Assignees

  • 苏州大学

Dates

Publication Date
20260512
Application Date
20251209

Claims (10)

  1. 1. The photovoltaic power generation device is characterized by being of a strip-shaped structure, wherein the three-dimensional size of the photovoltaic power generation device is (0.001-3) cm (0.2-20) cm; the cross section of the photovoltaic power generation device is one of a circle, an ellipse, a rectangle, a triangle and a polygon; The material of the photovoltaic power generation device is one of reduced graphene oxide, a multiwall carbon nanotube composite material and amorphous carbon; The preparation method of the photovoltaic power generation device is one of 3D printing and photo-curing printing; Adding an ascorbic acid aqueous solution into graphene oxide suspension, centrifugally washing, carrying out suction filtration and concentration to obtain reduced graphene oxide ink, sequentially adding concentrated sulfuric acid and concentrated nitric acid into a multiwall carbon nanotube, stirring for reaction in an oil bath and a condensation environment, and carrying out aftertreatment to obtain acidified multiwall carbon nanotube ink; The photo-curing printing method comprises the steps of mixing polyethylene glycol diacrylate, water, phenyl-2, 4, 6-trimethylbenzoyl lithium phosphinate and pigment to obtain a precursor solution, carrying out photo-curing printing on the precursor solution according to a preset fiber model by adopting a photo-curing printer to obtain strip-shaped fibers, maintaining the strip-shaped fibers in a linear state, carrying out freeze drying, and then calcining to obtain the amorphous carbon photovoltaic power generation device.
  2. 2. A method of making a photovoltaic power generation device according to claim 1, wherein the method is one of 3D printing, photo-curing printing; the 3D printing method comprises the following steps of: adding an ascorbic acid aqueous solution into the graphene oxide suspension, and performing centrifugal washing, suction filtration and concentration to obtain reduced graphene oxide ink; Sequentially adding concentrated sulfuric acid and concentrated nitric acid into the multiwall carbon nanotube, stirring and reacting in an oil bath and condensation environment, and performing aftertreatment to obtain acidified multiwall carbon nanotube ink; and mixing the reduced graphene oxide ink and the acidified multiwall carbon nanotube ink, extruding by a 3D printer, and simultaneously performing suspension freeze drying to obtain the reduced graphene oxide and multiwall carbon nanotube composite photovoltaic power generation device.
  3. 3. The method for manufacturing a photovoltaic power generation device according to claim 2, wherein the concentration of the graphene oxide suspension is 3-15 mg/mL -1 , the concentration of the ascorbic acid aqueous solution is 20-100 mg/mL -1 , and the volume ratio of the ascorbic acid aqueous solution to the graphene oxide suspension is 1 (9-11).
  4. 4. The method for manufacturing a photovoltaic power generation device according to claim 2, wherein the mass concentration of the concentrated sulfuric acid is 98%, the mass concentration of the concentrated nitric acid is 98%, the ratio of the mass of the multi-walled carbon nanotubes to the sum of the volumes of the concentrated sulfuric acid and the concentrated nitric acid is 1g (40-50 mL), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1.
  5. 5. The method for manufacturing a photovoltaic power generation device according to claim 2, wherein after concentrated sulfuric acid and concentrated nitric acid are sequentially added to the multiwall carbon nanotubes, the multiwall carbon nanotubes are stirred and reacted in an oil bath and a condensation environment at 88-92 ℃ for 1.5-2.5 hours.
  6. 6. The method of manufacturing a photovoltaic power generation device according to claim 2, wherein the post-treatment comprises cooling the solution to room temperature, diluting with deionized water, and vacuum filtering.
  7. 7. The preparation method of the photovoltaic power generation device according to claim 2, wherein the reduced graphene oxide ink and the acidified multiwall carbon nanotube ink are mixed according to a mass ratio of 1 (0.1-4.0); Extruding by adopting a direct-writing type 3D printer, wherein the extruding temperature is 22-28 ℃, the pressure is 180-300 kPa, the diameter of a nozzle is 210-1200 mu m, and hanging type freezing shaping is carried out in a liquid nitrogen freezing shaping groove while extruding by adopting the 3D printer, and then freeze-drying is carried out by adopting a freeze dryer.
  8. 8. The method of manufacturing a photovoltaic power generation device according to claim 2, wherein the method of photo-curing printing comprises the steps of: Mixing polyethylene glycol diacrylate, water, phenyl-2, 4, 6-trimethylbenzoyl lithium phosphinate and pigment to obtain a precursor solution; Performing photo-curing printing on the precursor solution according to a preset fiber model by adopting a photo-curing printer to obtain long-strip fibers; and (3) freeze-drying the long-strip fiber in a linear state, and then calcining to obtain the amorphous carbon photovoltaic power generation device.
  9. 9. The method for preparing the photovoltaic power generation device according to claim 8, wherein the mass ratio of polyethylene glycol diacrylate, water, phenyl-2, 4, 6-trimethylbenzoyl lithium phosphinate and pigment in the precursor solution is (20-10): 80-90): 0.3-0.6): 0.1; And/or setting parameters when the photo-curing printing is performed, wherein the layer thickness is 0.001-1 mm, the bottom layer thickness is 0.001-10 mm, the bottom layer number is 1-10, the exposure time is 1-5 s, and the bottom layer exposure time is 10-60 s; And/or the freeze-drying method comprises the steps of putting the long strip-shaped fibers in a culture dish in a straight line state, then putting the culture dish into a liquid nitrogen barrel for freezing, and immediately putting the frozen culture dish into a freeze dryer for freeze-drying; And/or placing the freeze-dried fibers in a quartz boat in a straight line state, annealing for 100-500 min at 480-550 ℃ in a nitrogen atmosphere, and taking out after naturally cooling to room temperature.
  10. 10. Use of the photovoltaic power generation device of claim 1 or prepared by the method of any one of claims 2 to 9 in the field of photovoltaic power generation.

Description

Photovoltaic power generation device and preparation method and application thereof Technical Field The invention belongs to the technical field of power generation materials, and particularly relates to a photovoltaic power generation device, a preparation method and application thereof. Background Due to the growing global energy demand, clean energy harvesting technologies with low carbon and even net zero carbon emissions are of great importance for achieving sustainable clean energy supply. The water-borne power generator (hydroelectric generator, HEG for short) is a water-borne power generator, realizes power generation by absorbing environmental heat and realizing ion transmission and separation in the process of effective evaporation, has universality, spontaneity and direct-current output, and is regarded as a potential power source, so that the water-borne power generator is a continuous and zero-carbon emission power generation technology with great prospect. The existing power generation device with the thin film structure is low in water transmission efficiency and evaporation rate, and is not suitable for practical large-scale application because the area of the device is increased due to the fact that the poiseuille distribution of the thin film in the evaporation process, namely the speed between two sides, is low, and the water transmission capacity is easy to decrease along with the area increase of the device, so that the power density is reduced. Disclosure of Invention The invention aims to overcome the defects in the prior art and provide a photovoltaic power generation device, a preparation method and application thereof, wherein the prepared photovoltaic power generation device is of a three-dimensional strip structure, has small size, high water transmission efficiency and evaporation rate and high output density, can amplify the performance by connecting 1 or more photovoltaic power generation devices in parallel or in series, improves the electrical performance of an integrated module, and is suitable for large-scale practical application. The invention provides the following technical scheme: In a first aspect, a photovoltaic power generation device is provided, where the photovoltaic power generation device is in a strip structure, and three-dimensional dimensions of the photovoltaic power generation device are (0.001-3) cm (0.2-20) cm. Further, the cross section of the photovoltaic power generation device is one of a circle, an ellipse, a rectangle, a triangle and a polygon. Further, the material of the photovoltaic power generation device is one of reduced graphene oxide, a multi-wall carbon nano tube composite material and amorphous carbon. In a second aspect, there is provided a method for manufacturing the photovoltaic power generation device according to the first aspect, wherein the method is one of 3D printing, photo-curing printing, screen printing, electrospinning, and casting. Further, the 3D printing method includes the steps of: adding an ascorbic acid aqueous solution into the graphene oxide suspension, and performing centrifugal washing, suction filtration and concentration to obtain reduced graphene oxide ink; Sequentially adding concentrated sulfuric acid and concentrated nitric acid into the multiwall carbon nanotube, stirring and reacting in an oil bath and condensation environment, and performing aftertreatment to obtain acidified multiwall carbon nanotube ink; and mixing the reduced graphene oxide ink and the acidified multiwall carbon nanotube ink, extruding by a 3D printer, and simultaneously performing suspension freeze drying to obtain the reduced graphene oxide and multiwall carbon nanotube composite photovoltaic power generation device. Further, the concentration of the graphene oxide suspension is 3-15 mg/mL -1, the concentration of the ascorbic acid aqueous solution is 20-100 mg/mL -1, and the volume ratio of the ascorbic acid aqueous solution to the graphene oxide suspension is 1 (9-11). If the concentration of the ascorbic acid aqueous solution and the graphene suspension is low, the reduction time is long, even the reduction cannot be carried out to a state capable of being centrifuged, the graphene oxide suspension cannot be changed into the partially reduced graphene oxide ink, and if the concentration is too high, the excessive reduction state is easy to occur, the slurry is dehydrated, and the preparation of the reduced graphene oxide ink cannot be carried out. Further, the mass concentration of the concentrated sulfuric acid is 98%, the mass concentration of the concentrated nitric acid is 98%, the ratio of the mass of the multi-wall carbon nano tube to the sum of the volumes of the concentrated sulfuric acid and the concentrated nitric acid is 1g (40-50 mL), and the volume ratio of the concentrated sulfuric acid to the concentrated nitric acid is 3:1. Further, after concentrated sulfuric acid and concentrated nitric acid are sequentially add