KR102629609B1 - An electrochemical conversion system of carbon dioxide comprising shingled silicon solar cell - Google Patents

Abstract

The present invention provides a power supply device including a solar cell with a shingled structure; and an electrochemical cell including an anode, a cathode, and a separator. The electrochemical conversion device of carbon dioxide including the shingled structure silicon solar cell of the present invention supplies power to the electrochemical cell. By dividing and using one silicon solar cell as a device, there is an effect of optimizing current and voltage characteristics.

Description

Electrochemical conversion device for carbon dioxide including a shingled silicon solar cell {AN ELECTROCHEMICAL CONVERSION SYSTEM OF CARBON DIOXIDE COMPRISING SHINGLED SILICON SOLAR CELL}

The present invention relates to an electrochemical conversion device for carbon dioxide including a shingled structure silicon solar cell. More specifically, it is a device that supplies power to an electrochemical cell by dividing and using one silicon solar cell, thereby converting current and voltage. This relates to an electrochemical conversion device for carbon dioxide that includes a shingled silicon solar cell whose characteristics can be optimized.

Global warming, climate change, and abnormal climates are continuously increasing due to the increase in greenhouse gas concentrations in the atmosphere. Carbon dioxide, a representative greenhouse gas, is generated in large quantities from thermal power plants, steel mills, and chemical plants. It is predicted that if no technological measures are taken, carbon dioxide will be emitted to the level of 62 Gton by 2050, reaching a point where humanity will be unable to reverse global warming. In order to alleviate global warming, atmospheric emissions of carbon dioxide (CO ₂ ) must be dramatically reduced.

In the conventional method of supplying voltage to a solar panel to an electrochemical cell for reducing carbon dioxide (CO ₂ ), in order to supply a sufficiently high current density to reduce carbon dioxide (CO ₂ ) to a desired carbon compound, A method of converting carbon dioxide (CO ₂ ) was used by using solar panels made of expensive materials (ex. GaInP/GaInAs/Ge triple-junction photovoltaic cell) or by connecting several solar panels in series. However, this method has a problem in that it cannot efficiently reduce carbon dioxide (CO ₂ ) due to low solar-to-fuel conversion efficiency, or the solar panel, which is a power supply source, is too expensive to be economical.

The purpose of the present invention is to provide electrochemical electrochemical treatment of carbon dioxide including a shingled silicon solar cell that can optimize current and voltage characteristics per unit area by dividing and using one silicon solar cell as a device for supplying power to an electrochemical cell. The goal is to provide a conversion device.

Another object of the present invention is to provide an electrochemical conversion device for carbon dioxide including a shingled silicon solar cell with excellent power conversion efficiency and accessibility by using a shingled silicon solar cell.

Another object of the present invention is to provide an electrochemical conversion device for carbon dioxide including a shingled silicon solar cell that can be miniaturized and integrated by using a shingled silicon solar cell.

According to one aspect of the present invention, a power supply device including a solar cell with a shingled structure; and an electrochemical cell including an anode, a cathode, and a separator. A carbon dioxide conversion device including a carbon dioxide conversion device is provided.

The solar cell of the shingled structure may include a plurality of solar cells, the plurality of solar cells may form a region in contact with each other, and may be arranged in a shingled structure.

The solar cell of the shingled structure includes a plurality of solar cells, the plurality of solar cells form a region in contact with each other, and the plurality of solar cells are connected in series to be arranged in a shingled structure. You can.

The solar cell of the shingled structure may include 2 to 10 solar cells.

The solar cell of the shingled structure may include 4 to 6 solar cells.

The solar cell with the shingled structure may be a silicon (Si)-based solar cell with a shingled structure.

In the electrochemical cell, the anode and cathode each include a metal, and the metal is silver (Ag), iridium (Ir), platinum (Pt), gold (Au), zinc (Zn), palladium (Pd), It may include one or more types selected from the group consisting of bismuth (Bi), copper (Cu), tin (Sn), indium (In), mercury (Hg), and lead (Pb).

In the cathode, the loading amount of the metal may be 0.1 to 10 mg/cm ² .

In the cathode, the loading amount of the metal may be 0.1 to 5 mg/cm ² .

In the electrochemical cell, the separator may include at least one selected from the group consisting of a fluorine-based polymer, an imidazolium-based polymer, and an aromatic polymer.

The electrochemical cell may further include an electrolyte, and the electrolyte may include at least one member selected from the group consisting of potassium hydroxide (KOH) and potassium hydrogen carbonate (KHCO ₃ ).

According to another aspect of the present invention, (a) manufacturing a power supply device including a solar cell with a shingled structure; (b) manufacturing an electrochemical cell including an anode, a cathode, and a separator; and (c) manufacturing a carbon dioxide conversion device by connecting the power supply device and an electrochemical cell.

Step (a) includes (a-1) dividing the solar cell to manufacture a plurality of solar cells; (a-2) manufacturing a solar cell string with a shingled structure by connecting one of the solar cells to the other solar cell with a conductive adhesive; and (a-3) power supply including a solar cell with a shingled structure by connecting one of the solar cell strings with the shingled structure and the other solar cell string with the shingled structure with a conductive ring-shaped wire. It may include manufacturing a device.

In step (a-1), the segmentation may be performed using a laser.

In step (a-1), the plurality of solar cells may be 2 to 10 solar cells.

Step (a-2) may be performed at a temperature of 130 to 150° C. for 25 to 35 seconds.

In step (a-3), the conductive annular wire is a circular conductor; and a solder plating layer formed on the surface of the circular conductor.

Step (a-3) is shingled by electrically connecting one of the solar cell strings of the shingled structure and the other solar cell string of the shingled structure through a soldering process with a conductive circular wire. ) may be a step of manufacturing a power supply device including a solar cell structure.

The soldering process may be performed at a temperature of 130 to 150°C.

According to another aspect of the present invention, a method for converting carbon dioxide using the carbon dioxide conversion device is provided.

The electrochemical conversion device of carbon dioxide including a shingled silicon solar cell of the present invention is a device that supplies power to an electrochemical cell, and has the effect of optimizing current and voltage characteristics by dividing and using one silicon solar cell. There is.

In addition, the present invention has excellent power conversion efficiency and accessibility by using a shingled silicon solar cell.

In addition, the present invention has the effect of enabling miniaturization and integration by using a shingled structure silicon solar cell.

1 is a schematic diagram schematically showing the electrochemical conversion device for carbon dioxide of the present invention.
Figure 2a is a current-voltage characteristic curve of an electrochemical cell according to metal catalyst loading conditions.
Figure 2b is a graph showing the Faraday efficiency of the electrochemical cell according to Preparation Example 1.
Figure 2c is a graph showing the Faraday efficiency of the electrochemical cell according to Preparation Example 2.
Figure 2d is a graph showing the Faraday efficiency of the electrochemical cell according to Preparation Example 3.
Figure 3 is a current-voltage characteristic curve of a shingled structure silicon solar cell according to splitting conditions.
Figure 4 shows the result of crossing the current-voltage characteristic curve of an electrochemical cell and the current-voltage characteristic curve of a shingled structure silicon solar cell.
Figure 5 is a diagram showing an electrochemical cell that receives power generated from a shingled silicon solar cell and a gas chromatography device for analyzing the product converted by supplying carbon dioxide to the electrochemical cell. am.

Since the present invention can be modified in various ways and can have various embodiments, specific embodiments will be illustrated and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all transformations, equivalents, and substitutes included in the spirit and technical scope of the present invention. In describing the present invention, if it is determined that a detailed description of related known technologies may obscure the gist of the present invention, the detailed description will be omitted.

Additionally, terms including ordinal numbers, such as first, second, etc., which will be used below, may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component, and similarly, the second component may also be named a first component without departing from the scope of the present invention.

Additionally, when a component is referred to as being “on another component,” “formed on another component,” “located on another component,” or “stacked on another component,” It may be formed by being directly attached to the front or one side of the surface of another component, positioned, or stacked, but it should be understood that other components may further exist in the middle.

Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

1 is a schematic diagram schematically showing the electrochemical conversion device for carbon dioxide of the present invention. Hereinafter, with reference to FIG. 1, the carbon dioxide electrochemical conversion device of the present invention will be described.

The present invention provides a power supply device including a solar cell with a shingled structure; and an electrochemical cell including an anode, a cathode, and a separator. It provides a carbon dioxide conversion device including a.

The solar cell of the shingled structure may include a plurality of solar cells, the plurality of solar cells may form a region in contact with each other, and may be arranged in a shingled structure.

The solar cell of the shingled structure includes a plurality of solar cells, the plurality of solar cells form a region in contact with each other, and the plurality of solar cells are connected in series to be arranged in a shingled structure. You can.

The solar cell of the shingled structure may include 2 to 10 solar cells, and preferably may include 4 to 6 solar cells.

If the solar cell of the shingled structure includes less than 2 solar cells, the possible potential range of the solar cell is very low and it is difficult to supply power to the electrochemical cell, which is undesirable, and if it includes more than 10 solar cells, it is undesirable. , the possible current range of solar cells is low, making it difficult to obtain appropriate power conversion efficiency, which is not desirable.

The solar cell with the shingled structure may be a silicon (Si)-based solar cell with a shingled structure.

In the electrochemical cell, the anode and cathode each include a metal, and the metal is silver (Ag), iridium (Ir), platinum (Pt), gold (Au), zinc (Zn), palladium (Pd), It may include one or more types selected from the group consisting of bismuth (Bi), copper (Cu), tin (Sn), indium (In), mercury (Hg), and lead (Pb).

In the cathode, the loading amount of the metal may be 0.1 to 10 mg/cm ² , preferably 0.1 to 5 mg/cm ² , and more preferably 0.5 to 2 mg/cm ² .

If the loading amount of the metal is less than 0.1 mg/cm ² , the amount of catalyst used for carbon dioxide conversion is absolutely small, which is undesirable because the carbon dioxide conversion rate is lowered, and if it exceeds 10 mg/cm ² , the catalyst area in contact with carbon dioxide is less than the loading amount. It is not desirable to load more catalyst than necessary because it does not expand accordingly.

In the electrochemical cell, the separator may include at least one selected from the group consisting of a fluorine-based polymer, an imidazolium-based polymer, and an aromatic polymer.

The electrochemical cell may further include an electrolyte, and the electrolyte may include at least one member selected from the group consisting of potassium hydroxide (KOH) and potassium hydrogen carbonate (KHCO ₃ ).

Hereinafter, the manufacturing method of the carbon dioxide electrochemical conversion device of the present invention will be described.

The present invention includes the steps of (a) manufacturing a power supply device including a solar cell with a shingled structure; (b) manufacturing an electrochemical cell including an anode, a cathode, and a separator; and (c) manufacturing a carbon dioxide conversion device by connecting the power supply device and an electrochemical cell.

Step (a) includes (a-1) dividing the solar cell to manufacture a plurality of solar cells; (a-2) manufacturing a solar cell string with a shingled structure by connecting one of the solar cells to the other solar cell with a conductive adhesive; and (a-3) power supply including a solar cell with a shingled structure by connecting one of the solar cell strings with the shingled structure and the other solar cell string with the shingled structure with a conductive ring-shaped wire. It may include manufacturing a device.

In step (a-1), the segmentation may be performed using a laser.

In step (a-1), the plurality of solar cells may be 2 to 10 solar cells.

The conductive adhesive may have a viscosity of 28,000 to 35,000 mPa·s (cP) at 25°C.

The curing temperature of the conductive adhesive may be 130 to 150° C., and the curing time may be 25 to 35 seconds.

Specifically, the conductive adhesive may be SKC Panacol's EL-3655, EL-3012, EL-3556, EL-3653 or Henkel's CE3103WLV and CA3556HF.

The conductive adhesive may further include a conductive filler, and the conductive filler is made of gold (Au), platinum (Pt), palladium (Pd), silver (Ag), copper (Cu), nickel (Ni), and carbon. It may include one or more species selected from the group consisting of

Step (a-2) may be performed at a temperature of 130 to 150° C. for 25 to 35 seconds.

In step (a-3), the conductive annular wire is a circular conductor; and a solder plating layer formed on the surface of the circular conductor.

By using the conductive ring-shaped wire, contact resistance with the solar cell string can be reduced and output can be improved.

The conductive annular wire may have a diameter of 0.2 to 0.5 mm.

If the diameter of the conductive ring-shaped wire is less than 0.2 mm, poor contact may occur between the conductive ring-shaped wire and the solar cell string, and if it exceeds 0.5 mm, the shading portion may increase and the light incident area may be reduced. This is undesirable because the contact resistance between the conductive ring-shaped wire and the solar cell string may increase.

The circular conductor may include one or more types selected from the group consisting of Tough Pitch Copper (TPC), Oxygen-Free Copper (OFC), and Phosphous Deoxidized Copper.

The circular conductor may have a resistance of 648 mΩ/m or less, a yield strength of 120 MPa or less, a tensile strength of 180 to 260 MPa, and an elongation of 15 to 45%.

The solder plating layer contains 59 to 65% by weight of tin (Sn), 33 to 39% by weight of lead (Pb), and 1.5 to 2.5% by weight of silver (Ag), or 57 to 63% by weight of tin (Sn) and lead (Pb). ) 37 to 43% by weight, or 93.5 to 97.2% by weight of tin (Sn), 0.3 to 0.7% by weight of copper (Cu), and 2.5 to 3.5% by weight of silver (Ag).

Step (a-3) is shingled by electrically connecting one of the solar cell strings of the shingled structure and the other solar cell string of the shingled structure through a soldering process with a conductive circular wire. ) may be a step of manufacturing a power supply device including a solar cell structure.

In step (a-3), the soldering process may be performed at a temperature of 130 to 150°C.

In step (a-3), the soldering process may be performed for 30 to 90 seconds.

Additionally, the present invention provides a method for converting carbon dioxide using the carbon dioxide conversion device.

[Example]

Hereinafter, the present invention will be described in more detail through examples. However, this is for illustrative purposes only and does not limit the scope of the present invention.

[Manufacture of electrochemical cell]

Manufacturing Example 1

The material used as a cathode catalyst was silver nanoparticles (Ag nanoparticles), and 500 mg of the silver nanoparticles were mixed with ionomer Sustainion XA-9 (2 ml), 2.5 ml of ethanol, and distilled water (DI. A mixed solution (6 ml) was prepared by dispersing in 1.5 ml of water. The mixed solution was evenly applied by air spray to a 6.25 cm ² carbon paper with an airbrush flow of 100 sccm, and dried at room temperature to form a cathode coated with silver nanoparticles. was manufactured. At this time, the loading amount of the silver nanoparticles was 1 mg/cm ² .

Then, a 9 cm ² anode coated with iridium oxide (IrOx) at 1 mg/cm ² , an anion exchange membrane Sustainion X37-50 RT, and a cathode coated with the silver nanoparticles were aligned in that order. An electrochemical cell was manufactured. At this time, 1M KOH electrolyte flowed through the anode, and humid CO ₂ gas was continuously injected into the cathode.

Production example 2

An electrochemical cell was manufactured in the same manner as Preparation Example 1, except that instead of setting the loading amount of silver nanoparticles to 1 mg/cm ² in Preparation Example 1, the loading amount of silver nanoparticles was set to 3 mg/cm ² .

Production example 3

An electrochemical cell was manufactured in the same manner as Preparation Example 1, except that instead of setting the loading amount of silver nanoparticles to 1 mg/cm ² in Preparation Example 1, the loading amount of silver nanoparticles was set to 5 mg/cm ² .

[Manufacture of shingled silicon solar cells]

Production example 4

The silicon solar cell was split using a nanosecond laser (532nm, 20ns, 30-100 KHz from Coherent). That is, the silicon solar cell was divided into four by running a 20ns laser using a 532nm wavelength with an average power of 10W, a frequency of 50KHz, and a scan speed of 1,300mm/s. Using a dispenser, conductive adhesive SKC Panacol's EL-3655 was applied to the electrodes of the four-split silicon solar cell and bonded in a shingled structure to manufacture a plurality of solar cell strings. Next, the plurality of solar cell strings were connected in series with a conductive ring-shaped wire through a soldering process of heat treatment at 140°C for 60 seconds to manufacture a shingled silicon solar cell.

Production example 5

A shingled silicon solar cell was manufactured in the same manner as Preparation Example 5, except that instead of dividing the silicon solar cell into four in Preparation Example 4, the silicon solar cell was divided into five.

Production example 6

A shingled silicon solar cell was manufactured in the same manner as Preparation Example 5, except that instead of dividing the silicon solar cell into four in Preparation Example 4, the silicon solar cell was divided into six.

[Manufacture of carbon dioxide conversion device]

Example 1

A carbon dioxide conversion device was manufactured by connecting the electrochemical cell according to Preparation Example 1 and the 32.5 cm ² silicon (Si) solar cell according to Preparation Example 4 with wire clips to each terminal.

Light of 1.5G illumination is irradiated to the silicon (Si) solar cell to generate power and apply voltage to the electrochemical cell. Finally, the power generated from the silicon (Si) solar cell drives the electrochemical cell and is converted to carbon monoxide (CO) by injecting carbon dioxide (CO ₂ ) into the cathode.

Examples 2 to 9

A carbon dioxide reduction device was manufactured using different electrochemical cells manufactured according to Preparation Examples 1 to 3 and silicon (Si) solar cells manufactured according to Preparation Examples 4 to 6, respectively. Table 1 below lists the electrochemical cells and silicon (Si) solar cells used in the carbon dioxide reduction device according to Examples 1 to 9.

Preparation Example 4 (4 divisions) Preparation Example 5 (5 divisions) Preparation Example 6 (6 divisions) Preparation Example 1 (1 mg/cm ² ) Example 1 Example 2 Example 3 Preparation Example 2 (3 mg/cm ² ) Example 4 Example 5 Example 6 Preparation Example 3 (5 mg/cm ² ) Example 7 Example 8 Example 9

[Test example]

Test Example 1: Faraday efficiency analysis

FIG. 2A is a current-voltage characteristic curve of an electrochemical cell according to metal catalyst loading conditions, FIG. 2B is a graph showing the Faraday efficiency of the electrochemical cell according to Preparation Example 1, and FIG. 2C is a graph showing the electrochemical cell according to Preparation Example 2. It is a graph showing the Faraday efficiency of , and Figure 2d is a graph showing the Faraday efficiency of the electrochemical cell according to Preparation Example 3. Figure 3 is a current-voltage characteristic curve of a shingled structure silicon solar cell according to splitting conditions. Additionally, Figure 4 shows the result of crossing the current-voltage characteristic curve of an electrochemical cell and the current-voltage characteristic curve of a shingled structure silicon solar cell. The power conversion efficiency (%) results according to Examples 1 to 9 are shown in Table 2 below. Faradaic Efficiency (%) was calculated according to Equation 1 below, and solar-to-fuel power conversion efficiency (SFE) (Solar-to-Fuel Conversion Efficiency, %) was calculated according to Equation 2 below.

[Equation 1]

i _co : partial current of product (CO) (A)

i _total : Total current supplied to the electrochemical cell (A)

n _co : electron transfer coefficient (for CO the electron transfer coefficient is 2)

v _gas : flow rate of CO2 supplied to the electrochemical cell (sccm)

c _co : measured concentration of product (CO) (ppm)

F: Faraday constant (96,485 C/mol)

V _m : unit gas volume at room temperature (24.5L/mol)

[Equation 2]

SFE _light : Solar-to-Fuel Conversion Efficiency,%

E ⁰ _CO2/CO : CO ₂ -CO standard reduction potential (1.34V)

I: Current at intersection (A)

FE _CO : Product Faraday efficiency (%)

P _solar : intensity of irradiated light, solar irradiance under AM 1.5G 1 sun conditions (100mW/cm ² )

A _solar : solar panel area (32.5 cm ² )

Preparation Example 4 (4 divisions) Preparation Example 5 (5 divisions) Preparation Example 6 (6 divisions) Preparation Example 1 (1 mg/cm ² ) 8.00% 10.55% 8.28% Preparation Example 2 (3 mg/cm ² ) 9.22% 10.52% 8.10% Preparation Example 3 (5 mg/cm ² ) 8.37% 10.17% 7.91%

According to Figures 2a to 2d, Preparation Example 2 with a loading amount of 3 mg/cm ² was shown to be 1.9 V at a current density of 10 mA/cm ² , Faraday efficiency was 97%, and Preparation Example 3 with a loading amount of 5 mg/cm ² was 10 mA/cm 2. The current density of cm ² was found to be 1.95 V, and the Faradaic efficiency was 95%. In addition, Preparation Example 1 with a loading amount of 1 mg/cm ² was found to be 1.96 V at a current density of 10 mA/cm ² and the Faradaic efficiency was confirmed to be the best at 99%.

Also, according to FIG. 3, Preparation Example 4 under four-division conditions had a maximum current (Imax) of 10.01 mA/cm ² and a maximum voltage (Vmax) of 2.42V. In addition, Preparation Example 5 under 5-division conditions showed a maximum current (Imax) of 8.22 mA/cm ² and a maximum voltage (Vmax) of 3.08V, and Preparation Example 6 under 6-division conditions showed a maximum current (Imax) of 6.24 mA/cm 2. cm ² and the maximum voltage (Vmax) was 3.78V.

In addition, according to Figure 4 and Table 1, the loading amount of the electrochemical cell was 1 mg/cm ² (Preparation Example 1), and a shingled structure silicon solar cell manufactured by dividing the silicon solar cell into 5 parts (Preparation Example 5) was used. (Example 2), it was confirmed that the power conversion efficiency was the best at 10.55%.

Test Example 2: Conversion analysis of carbon dioxide

Figure 5 is a diagram showing an electrochemical cell that receives power generated from a shingled silicon solar cell and a gas chromatography device for analyzing the product converted by supplying carbon dioxide to the electrochemical cell. am. The component analysis and concentration of the gas generated from the gas chromatography are obtained, and the Faraday efficiency is obtained by calculating Equation 1 above.

Carbon dioxide was converted to carbon monoxide using the carbon dioxide conversion device according to Example 2. Power is generated by irradiating light of 1.5G illumination to a shingled structure silicon (Si) solar cell (Preparation Example 5), which is the power supply device for the carbon dioxide conversion device according to Example 2, and connected to an electrochemical cell (Preparation Example 1). Voltage was applied to. Finally, the power generated from the shingled structure silicon (Si) solar cell drove the electrochemical cell, and carbon dioxide (CO ₂ ) was injected into the cathode of the electrochemical cell. The carbon dioxide conversion device according to Example 2 had high solar-to-fuel conversion efficiency and was able to efficiently reduce carbon dioxide (CO ₂ ) to carbon monoxide (CO).

Although the preferred embodiments of the present invention have been described above, those skilled in the art will be able to add, change, delete or modify components without departing from the spirit of the present invention as set forth in the patent claims. The present invention may be modified and changed in various ways by addition, etc., and this will also be included within the scope of rights of the present invention. For example, each component described as single may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

Claims (20)

(a) manufacturing a power supply device including a solar cell with a shingled structure;
(b) manufacturing an electrochemical cell including an anode, a cathode, and a separator; and
(c) manufacturing a carbon dioxide conversion device by connecting the power supply device and an electrochemical cell,
Step (a) is
(a-1) dividing the solar cell to manufacture 5 solar cells;
(a-2) manufacturing a solar cell string with a shingled structure by connecting one of the solar cells to the other solar cell with a conductive adhesive; and
(a-3) A shingled structure in which one solar cell string of the shingled structure and another solar cell string of the shingled structure are electrically connected through a soldering process with a conductive ring-shaped wire. It includes; manufacturing a power supply device including a solar cell,
In step (a-1), the segmentation is performed using a laser,
Step (a-2) is carried out at a temperature of 130 to 150° C. for 25 to 35 seconds,
In step (a-3), the conductive annular wire is a circular conductor; and a solder plating layer formed on the surface of the circular conductor,
In step (a-3), the soldering process is performed at a temperature of 130 to 150°C,
Step (b)
(b-1) preparing a mixed solution containing silver nanoparticles, ionomer, ethanol, and distilled water;
(b-2) applying the mixed solution to carbon paper using air spray;
(b-3) drying the carbon paper coated with the mixed solution to manufacture a cathode including carbon paper coated with silver nanoparticles and ionomer;
(b-4) preparing an anode coated with iridium oxide; and
(b-5) manufacturing an electrochemical cell by arranging the anode, anion exchange membrane, and cathode in order,
The carbon dioxide conversion device is
A power supply device including solar cells with a shingled structure; and
An electrochemical cell including an anode, a cathode, and a separator;
The cathode includes carbon paper and silver nanoparticles (Ag nanoparticles) and ionomer applied to the carbon paper,
The anode is an anode coated with iridium oxide,
The loading amount of metal in the cathode is 0.1 to 5 mg/cm ² ,
A method of manufacturing a carbon dioxide conversion device, wherein the solar cell of the shingled structure includes five solar cells. According to paragraph 1,
The solar cell of the shingled structure is
A method of manufacturing a carbon dioxide conversion device, characterized in that the five solar cells form an area in contact with each other and are arranged in a shingled structure. According to paragraph 2,
The solar cell of the shingled structure is
A method of manufacturing a carbon dioxide conversion device, characterized in that the five solar cells form an area in contact with each other, and the five solar cells are connected in series and arranged in a shingled structure. delete delete According to paragraph 1,
A method of manufacturing a carbon dioxide conversion device, characterized in that the solar cell of the shingled structure is a silicon (Si)-based solar cell of the shingled structure. delete delete delete According to paragraph 1,
In the electrochemical cell,
A method of manufacturing a carbon dioxide conversion device, wherein the separation membrane includes at least one selected from the group consisting of a fluorine-based polymer, an imidazolium-based polymer, and an aromatic polymer. According to paragraph 1,
The electrochemical cell further includes an electrolyte,
A method of manufacturing a carbon dioxide conversion device, wherein the electrolyte includes at least one member selected from the group consisting of potassium hydroxide (KOH) and potassium hydrogen carbonate (KHCO ₃ ). delete delete delete delete delete delete delete delete delete