Cell for measuring photoelectrochemical cell-performance and a method for measuring photoeletrochemical cell-performance using the same

Abstract

The present invention relates to a cell for measuring the performance of a photoelectrochemical cell and a method for measuring the performance of a photoelectrochemical cell using the same, comprising: a first through-hole provided with a reference electrode and positioned at an angle of 0 to 45° from an axis perpendicular to the bottom surface; a second through-hole provided with a working electrode, a sample, and an electrolyte, positioned parallel to the first through-hole and perpendicular to the bottom surface; a third through-hole provided with a counter electrode, positioned parallel to the second through-hole and positioned at an angle of 0 to 45° from an axis perpendicular to the bottom surface; and a light-transmitting part positioned horizontally to the bottom surface and positioned to intersect the second through-hole at one point.

Description

Technology Field

[0001] The present invention relates to a cell for measuring the performance of a photoelectrochemical cell, and more specifically, to a cell for measuring the performance of an electrode used in a photoelectrochemical cell. Background Technology

[0002] A representative method for producing green hydrogen involves using renewable energy to induce the electrolysis of water. Among these, the most promising technology is photoelectrochemical water splitting. The core component of this photoelectrochemical water splitting is the photoelectrochemical cell.

[0003] Unlike conventional green hydrogen production facilities, photoelectrochemical cells can produce hydrogen by directly utilizing sunlight. Photoelectrochemical cells are light-operated batteries that, unlike conventional batteries, use semiconductors in their electrodes; currently, silicon or metal oxides are primarily used. When light with an energy greater than the band gap of this semiconductor is shone on it, electrons and holes are generated and move along the wire to the interface between the semiconductor and the electrolyte. These then come into contact with water in the electrolyte to produce hydrogen and oxygen.

[0004] However, since conventional metal oxides or silicon semiconductor materials can generate a voltage of approximately 0.7 V from sunlight, they cannot induce complete water splitting without an external bias voltage. To resolve this, it is essential to develop a tandem photoelectrochemical cell capable of securing an operating voltage of 1.24 V or higher by utilizing semiconductor materials with different absorption regions for the reduction and oxidation electrodes, respectively. Furthermore, accurate measurement of the efficiency of the photoelectrochemical cell containing the aforementioned electrodes is a necessary foundation. Additionally, the efficiency of water splitting using photoelectrochemical cells (PEC cells) is not particularly high. This is because most current research utilizes materials with large band gaps, such as TiO2. A large band gap limits the utilization of only ultraviolet light, which accounts for 4% of solar energy. To utilize the visible light region, which accounts for 45% of solar energy, research on materials with smaller band gaps is essential.

[0005] Currently, to measure the efficiency of photoelectrochemical cells, the hydrogen production time, light energy, and actual hydrogen production volume are measured and substituted into a formula to calculate the efficiency by comparing the amount of hydrogen produced relative to the magnitude of light energy. However, there is a limitation in that the accuracy of the measured efficiency is low because the amount of hydrogen generated through photoelectrochemical cells in the laboratory is too small to determine the exact quantity of hydrogen.

[0006] In addition, there are cases where both the reduction electrode and the oxidation electrode used in the aforementioned tandem photoelectrochemical cell are manufactured by stacking semiconductors having various band gap energies. In this case, different photoelectric conversion efficiencies may appear on the front and back surfaces of the electrodes, so it was necessary to conduct an accurate analysis of this. The problem to be solved

[0007] The present invention was devised to solve the aforementioned conventional problems and aims to provide a cell for measuring the performance of a photoelectrochemical cell and a method for measuring the performance of a photoelectrochemical cell using the same, which helps to more easily measure the photoelectric conversion efficiency on both sides of an oxidation electrode or a reduction electrode used in a photoelectrochemical cell. means of solving the problem

[0008] The present invention discloses a cell for measuring the performance of a photoelectrochemical cell, comprising, as a means to achieve the above-described objective, a reference electrode and a first through-hole positioned at an angle of 0 to 45° from an axis perpendicular to the bottom surface; a working electrode, a sample, and an electrolyte and a second through-hole positioned parallel to the first through-hole and perpendicular to the bottom surface; a counter electrode and a third through-hole positioned parallel to the second through-hole and perpendicular to the bottom surface and at an angle of 0 to 45° from an axis perpendicular to the bottom surface; and a light-transmitting portion positioned horizontally to the bottom surface and arranged to intersect the second through-hole at one point.

[0009] Here, the first penetration part, the second penetration part, and the third penetration part can be connected to each other so that the electrolyte flows in from inside the cell.

[0010] Here, at least one end of the light-transmitting portion is provided with at least one bolt that fixes the sample and also blocks the interior of the second penetration portion from the outside, and a light-transmitting opening through which light is transmitted may be formed in the center of the bolt.

[0011] Here, the light-transmitting opening of the above-mentioned bolt may have a shape that narrows from the outside of the cell to the inside of the cell.

[0012] Here, the second penetration part includes an inner wall that separates the internal space, and the inner wall may have an electrolyte penetration hole formed therein to allow the electrolyte to flow in.

[0013] Here, at least one of the above-mentioned internal walls may be provided.

[0014] Here, the sample may be at least one of an oxidation electrode and a reduction electrode.

[0015] Here, the sample may undergo an oxygen evolution reaction or a hydrogen evolution reaction as light is irradiated inside the cell.

[0016] Here, the cell can measure the efficiency of the photoelectrochemical reaction of the sample.

[0017] Here, the cell further includes a gas line for injecting an inert gas, and the gas line may be connected to at least one of a first penetration and a third penetration.

[0018] In addition, the present invention discloses a method for measuring the performance of a photoelectrochemical cell, comprising the steps of: combining a sample, a reference electrode, a working electrode, and a counter electrode in a cell for measuring the performance of the photoelectrochemical cell described above as a means to achieve the above-described purpose; introducing an electrolyte into the cell in which the sample, reference electrode, working electrode, and counter electrode are combined; irradiating light into the cell in which the electrolyte is introduced; and analyzing electrical data inside the cell in which the light is irradiated. Effects of the invention

[0019] The cell for measuring the performance of a photoelectrochemical cell according to the present invention can more easily measure the photoelectric conversion efficiency on both sides of the electrode applied to the photoelectrochemical cell.

[0020] In addition, the performance of a newly developed photoelectrochemical cell can be analyzed with higher accuracy by using the cell for measuring the performance of a photoelectrochemical cell according to the present invention. Brief explanation of the drawing

[0021] FIG. 1 is a schematic diagram illustrating a cell for measuring the performance of a photoelectrochemical cell according to the present invention. Figure 2 is a photograph showing the combination of a reference electrode, a working electrode, a counter electrode, a sample, and an electrolyte in a cell for measuring the performance of a photoelectrochemical cell according to the present invention. Figure 3 is a photograph showing the process of measuring the performance of a photoelectrochemical cell using the cell for measuring the performance of a photoelectrochemical cell according to the present invention. Specific details for implementing the invention

[0022] The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0023] Throughout this specification, when a part is described as "comprising" a certain component, this means that, unless specifically stated otherwise, it does not exclude other components but may include additional components.

[0024] As used herein, terms of degree such as “about,” “substantially,” etc., are used to mean at or near the stated value when inherent manufacturing material tolerances are presented in the said sense, and are used to prevent unscrupulous infringers from unfairly exploiting the disclosed content in which precise or absolute values ​​are mentioned to aid in understanding the invention. Furthermore, throughout this specification, “a step of” or “a step of” does not mean “a step for”.

[0025] Since a person skilled in the art can make various applications through the gist of the present invention, the scope of the rights of the present invention is not limited to the following embodiments. The scope of the rights of the present invention extends to parts that are obvious to a person skilled in the art who can easily substitute or modify using prior art based on the matters described in the specific claims.

[0026] The present invention will be described in more detail below with reference to the attached drawings, where necessary.

[0028] <광전기화학전지 성능 측정용 셀>

[0029] The present invention discloses a cell for measuring the performance of a photoelectrochemical cell as a means to achieve the above-mentioned purpose.

[0030] FIG. 1 is a schematic diagram illustrating a cell for measuring the performance of a photoelectrochemical cell according to the present invention. More specifically, FIG. 1a illustrates the front view of a cell for measuring the performance of a photoelectrochemical cell according to one embodiment of the present invention, and FIG. 1b illustrates the rear view of a cell for measuring the performance of a photoelectrochemical cell according to one embodiment of the present invention.

[0031] Referring to FIG. 1, it can be seen that the cell for measuring the performance of a photoelectrochemical cell according to the present invention has a first penetration part; a second penetration part; a third penetration part and a light-transmitting part formed therein.

[0032] Below, the cell for measuring the performance of a photoelectrochemical cell according to the present invention will be described in more detail.

[0033] First, the cell for measuring the performance of a photoelectrochemical cell according to the present invention is formed with a first penetration part; a second penetration part; a third penetration part; and a light-transmitting part as described above.

[0034] First, the first penetration part may be positioned on the bottom surface at an angle of 0 to 45° from the axis. A reference electrode may be provided in the first penetration part.

[0035] Next, the second penetration may also be positioned along an axis perpendicular to the bottom surface. That is, the second penetration may be positioned parallel to the first penetration so as to be perpendicular to the bottom surface. A working electrode, a sample, and an electrolyte may be provided in the second penetration.

[0036] Here, the sample may be at least one of an oxidation electrode and a reduction electrode. More preferably, the sample may be a pair of an oxidation electrode and a reduction electrode forming a photoelectrochemical cell. As described above, since the cell of the present invention is intended for measuring the performance of a photoelectrochemical cell, the types of the oxidation electrode and the reduction electrode are not limited to specific types. That is, the sample may be capable of an oxygen generation reaction, a hydrogen generation reaction, or a carbon dioxide reduction reaction occurring as light is irradiated inside the main body (100).

[0037] A photoelectrochemical cell is fundamentally composed of four components: a semiconductor oxidation or reduction electrode, a counter electrode, a reference electrode, and an electrolyte. When photons (solar energy) with energy greater than the bandgap are incident on a semiconductor photoelectrode, electron-hole pairs are formed within the semiconductor due to the photoelectric effect. These separated electron-hole pairs then move to opposite ends according to the band bending phenomenon at the semiconductor-electrolyte interface. When the oxidation electrode is the working electrode, the separated holes (h + ) oxidizes water at the semiconductor-electrolyte interface to produce proton ions (H + It generates ) and produces oxygen gas. When the reduction electrode is the working electrode, separated electrons (e - ) reduces water at the semiconductor-electrolyte interface to generate hydrogen gas (H2). In each case, the opposite charge moves along the external circuit to the opposite electrode to generate a couple reaction.

[0038] Here, the second penetration section (120) may include an inner wall (121) that partitions the internal space of the main body (100). Here, at least one inner wall (121) may be provided. More specifically, the second penetration section may include an inner wall for separating a space in which at least one sample is stored, and may include an inner wall for partitioning the second penetration section from the first penetration section and the third penetration section. The inner wall (121) may have an electrolyte penetration opening formed therein to allow the electrolyte to flow in.

[0039] With the inner wall (121) formed, samples can be accommodated in each independent space within the main body (100), thereby reducing physical interference between each sample. Additionally, with the inner wall (121) formed, the movement of the samples can be restricted without a separate support, thereby allowing for more accurate measurement of the sample's performance.

[0040] Next, the third penetration may also be positioned at an angle of 0 to 45° from an axis perpendicular to the bottom surface. That is, the third penetration may be positioned parallel to the first penetration and the second penetration. A counter electrode may be provided in the third penetration.

[0041] Although FIG. 2a illustrates that a third penetration is formed to the left and a first penetration is formed to the right based on the second penetration, the position where the first penetration and the third penetration are arranged is not limited to any specific location. That is, if a reference electrode or a counter electrode is provided on each side based on the second penetration where the sample and the working electrode are provided, the performance of the sample can be easily measured regardless of where each electrode is provided.

[0042] Next, the light-transmitting portion may be arranged along an axis horizontal to the bottom surface. That is, the light-transmitting portion may be arranged horizontally to the bottom surface so as to intersect the second penetration portion at one point. The light-transmitting portion is intended for the transmission of light, and a light-transmitting opening may be formed therein to allow light to pass through. Accordingly, light can be irradiated into the cell through the light-transmitting portion. Along the same line as the axis of the light-transmitting portion, a light source for irradiating light onto the sample may be arranged on the outside of the cell.

[0043] Here, at least one bolt may be provided at at least one end of the light-transmitting portion to secure the sample and also to block the inside and outside of the cell. A light-transmitting opening through which light passes may be formed in the central part of the bolt.

[0044] Here, the light transmission port of the bolt and the light transmission portion may be formed in a shape that narrows from the outside of the cell to the inside of the cell. If the light transmission port has a shape that narrows towards the inside of the cell, the diffraction of light irradiated from the internal system of the cell can be expected to be suppressed, and accordingly, the photoelectrochemical performance of the sample can be measured with higher reliability.

[0045] The diameter ratio of the light-transmitting sphere calculated by the following mathematical formula 1 is preferably 0.1 to 0.9, but is not limited thereto.

[0046] [Mathematical Formula 1]

[0047] Light-transmitting sphere diameter ratio = (Outer cell diameter of light-transmitting sphere - Inner cell diameter of light-transmitting sphere) / (Outer cell diameter of light-transmitting sphere)

[0048] As the bolt is fastened to the light-transmitting part, the interior of the cell can form an independent system, and furthermore, the electrolyte contained within the cell can be prevented from leaking out through the light-transmitting part. When the bolt is fastened to the main body, a rubber ring, gasket, etc., may be added to enhance the effects of airtightness and sealing, but is not limited thereto.

[0049] The light-transmitting portion may be formed to penetrate the second-transmitting portion, that is, the cell. Light-transmitting holes may be formed on both the front and rear surfaces of the cell. In this case, the bolt may be fastened to the front light-transmitting hole of the cell or the rear light-transmitting hole of the cell, or to both the front light-transmitting hole of the cell and the rear light-transmitting hole of the cell. As light-transmitting holes are formed on both the front and rear surfaces of the cell in this manner, it is possible to irradiate the sample with light not only from the front but also from the rear, thereby enabling more precise measurement of the photoelectrochemical performance of both surfaces of the sample attached to the cell.

[0050] Here, the first penetration part, the second penetration part, and the third penetration part can be connected to each other so that the electrolyte flows in from inside the cell.

[0051] In addition, the photoelectrochemical cell performance measurement cell of the present invention may further include a gas line for injecting an inert gas. At this time, the inert gas may be carbon dioxide, nitrogen, argon, etc., but is not limited thereto. Any type of inert gas that can assist in measuring the performance of the photoelectrochemical cell may be used. For example, if carbon dioxide is injected as the inert gas, the carbon dioxide reduction performance of the sample (e.g., reduction electrode) can be measured, and if argon or nitrogen is injected as the inert gas, the dissolved oxygen content of the electrolyte can be lowered, thereby allowing the oxygen generation reaction of the sample to be measured more accurately.

[0052] Additionally, the gas line may be connected to the first penetration and / or the third penetration. The location where the gas line is installed is not limited and can be selected based on the ease of performance evaluation. Furthermore, the gas line may be installed as a single unit in the entire cell or multiple units may be installed.

[0053] The cell for measuring the performance of a photoelectrochemical cell according to the present invention allows light to be irradiated onto the front and rear surfaces of the sample through easier operation. The reason why rear irradiation of the sample is necessary is that, due to unnecessary light absorption in the catalyst layer exemplarily included in the sample, a problem may arise in which the accuracy of performance measurement for the active layer that substantially generates electron-hole pairs is reduced. Therefore, to improve the accuracy of the photoelectrochemical performance measurement of the sample, evaluation must be conducted by irradiating light in a direction other than the direction in which the catalyst layer is formed. By using the cell for measuring the performance of a photoelectrochemical cell according to the present invention, light can be irradiated onto the side of the sample where the catalyst layer is not formed (e.g., the rear surface) through easier operation, and consequently, the performance of the sample can be measured with higher accuracy.

[0054] Furthermore, using the photoelectrochemical cell for measuring performance of the present invention has the advantage of enabling photoelectrochemical performance measurement even for samples (oxidation or reduction electrodes) without a catalyst layer or for substrates that are not transparent. In addition, since the photoelectrochemical cell for measuring performance of the present invention passes through water (electrolyte) before the irradiated light reaches the sample, it is possible to provide an environment similar to actual use for the sample by utilizing the characteristic of light dispersion in water, thereby allowing for more reliable measurement results.

[0056] <광전기화학전지 성능 측정용 셀을 이용한 광전기화학전지 성능 측정 방법>

[0057] In addition, the present invention discloses a method for measuring the performance of a photoelectrochemical cell as a means to achieve the above-described purpose.

[0058] The method for measuring the performance of a photoelectrochemical cell according to the present invention comprises: a step of combining a sample, a reference electrode, a working electrode, and a counter electrode in a cell for measuring the performance of a photoelectrochemical cell described above; a step of introducing an electrolyte into the cell in which the sample, reference electrode, working electrode, and counter electrode are combined; a step of irradiating light into the cell in which the electrolyte is introduced; and a step of analyzing electrical data inside the cell in which the light is irradiated.

[0059] Below, the above measurement method will be explained in more detail by subdividing it into steps.

[0060] First, the above measurement method includes the step of combining a working electrode sample, a reference electrode, and a counter electrode in the cell for measuring the performance of the photoelectrochemical cell described above.

[0061] As described above, the above working electrode sample may be an oxidation electrode or a reduction electrode, but is not limited thereto. For example, it may be a novel material required for photoelectrochemical performance measurement formed in the form of a thin film.

[0062] Next, the above measurement method includes the step of introducing an electrolyte into a cell in which the sample, reference electrode, and counter electrode are combined.

[0063] FIG. 2 is a photograph showing the connection of a reference electrode, a counter electrode, a working electrode sample, and an electrolyte to a cell for measuring the performance of a photoelectrochemical cell according to the present invention. More specifically, FIG. 2a shows the connection of a sample, a reference electrode, and a counter electrode to a cell for measuring the performance of a photoelectrochemical cell according to one embodiment of the present invention, and FIG. 2b shows the introduction of an electrolyte into the cell in which the sample, the reference electrode, and the counter electrode are connected.

[0064] Referring to FIG. 2, the assembly process of the cell for measuring the performance of a photoelectrochemical cell according to the present invention is described as follows. As can be seen in FIG. 2a, an internal wall that partitions the internal space of the cell may be formed inside the cell of the present invention. Through the formed internal wall, a sample may be placed in an independent space. In addition, a reference electrode may be attached to the first through-hole of the cell for measuring the performance of a photoelectrochemical cell according to the present invention, a sample and a working electrode may be attached to the second through-hole, and then a counter electrode may be attached to the third through-hole. There are no particular restrictions on the order in which the first through-hole, the second through-hole, and the third through-hole, as well as the components thereof, are attached. Once the attachment of each electrode and the sample to each through-hole is completed, a bolt may be fastened to the light-transmitting part. By fastening the bolt to the light-transmitting part, the sample can be physically fixed, and leakage of the electrolyte introduced thereafter can be prevented. Furthermore, when the bolt and the light-transmitting part are fastened, a rubber ring or the like may be added to improve airtightness / sealing. When the assembly of the sample, reference electrode, working electrode, counter electrode, and bolt in the cell is completed, the electrolyte can be introduced through the second penetration. The first penetration, the second penetration, the third penetration, and the inner wall can be interconnected to facilitate the smooth inflow of the electrolyte. In this way, the interior of the cell can be integrated into a single system.

[0065] Next, the above measurement method includes the step of irradiating light onto the cell into which the electrolyte has been introduced.

[0066] The light may be infrared, visible light, ultraviolet light, etc., or may be mixed light in which the aforementioned light is appropriately mixed, such as sunlight. Additionally, the light may be irradiated through a light-transmitting port formed in the center of the bolt.

[0067] Finally, the above measurement method includes the step of analyzing electrical data inside the cell irradiated with the light.

[0068] FIG. 3 is a photograph showing the process of measuring the performance of a photoelectrochemical cell using the cell for measuring the performance of a photoelectrochemical cell according to the present invention. More specifically, FIG. 3a shows the rear surface of the cell in FIG. 2b being illuminated with light, and FIG. 3b shows the front surface of the cell in FIG. 2b being illuminated with light.

[0069] Referring to FIG. 3, a method for measuring the performance of a photoelectrochemical cell using the cell for measuring the performance of a photoelectrochemical cell according to the present invention is described as follows. A light source is connected to the cell for measuring the performance of a photoelectrochemical cell, to which a sample is attached according to the method described above, as shown in FIG. 3. A photoelectrochemical reaction is induced in the sample inside the cell that is irradiated with light through the light source. When photons (solar energy) having energy greater than the band gap are incident on a photoelectrode composed of a semiconductor, electron-hole pairs are formed within the semiconductor due to the photoelectric effect, and the separated electron-hole pairs move due to the band bending phenomenon at the semiconductor-electrolyte interface. The moved electron-hole pairs generate a photocurrent, and the photoelectrochemical performance of the sample can be measured by measuring the photocurrent using a ternary electrode (reference electrode, working electrode, counter electrode) coupled to the cell. In addition, the cell for measuring the performance of a photoelectrochemical cell according to the present invention enables irradiation of both sides of light on the sample, and the difference in photoelectrochemical performance between the front and back sides of the sample can be measured more conveniently with only a simplified operation of flipping the cell for measuring the performance of the photoelectrochemical cell with respect to the light source.

[0070] The cell for measuring the performance of a photoelectrochemical cell according to the present invention can more easily measure the photoelectric conversion efficiency on both sides of the electrode applied to the photoelectrochemical cell.

[0071] In addition, the performance of a newly developed photoelectrochemical cell can be analyzed with higher accuracy by using the cell for measuring the performance of a photoelectrochemical cell according to the present invention.

[0072] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention.

[0073] Accordingly, the embodiments disclosed in this invention are intended to illustrate, not limit, the technical concept of the invention, and the scope of the technical concept of the invention is not limited by these embodiments. The scope of protection of this invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of this invention. Explanation of the symbols

[0074] 100 Cells for measuring photoelectrochemical cell performance 110 First penetration part 120 Second penetration part 121 interior wall 130 Third penetration 140 Light-transmitting part 141 volts

Claims

Claim 1 A cell for measuring the performance of a photoelectrochemical cell, comprising: a first penetration portion arranged at an angle of 0 to 45° from an axis perpendicular to the bottom surface, wherein a reference electrode is provided; a second penetration portion arranged parallel to the first penetration portion and perpendicular to the bottom surface, wherein a working electrode, a sample, and an electrolyte are provided; a third penetration portion arranged parallel to the second penetration portion and perpendicular to the bottom surface, wherein a counter electrode is provided and arranged at an angle of 0 to 45° from an axis perpendicular to the bottom surface; and a light-transmitting portion arranged horizontally to the bottom surface and intersecting the second penetration portion at one point. Claim 2 A photoelectrochemical cell performance measuring cell according to claim 1, wherein the first penetration part, the second penetration part, and the third penetration part are connected to each other so that the electrolyte is introduced inside the cell. Claim 3 A photoelectrochemical cell performance measuring cell according to claim 1, wherein at least one bolt is provided at at least one end of the light-transmitting portion to fix the sample and also to block the interior of the second penetration portion from the outside, and a light-transmitting hole through which light is transmitted is formed in the center of the bolt. Claim 4 In claim 3, the light-transmitting hole of the bolt has a shape that narrows from the outside of the cell to the inside of the cell, a photoelectrochemical cell performance measuring cell. Claim 5 A photoelectrochemical cell performance measuring cell according to claim 1, wherein the second penetration portion includes an inner wall partitioning the internal space of the cell, and the inner wall has an electrolyte penetration hole formed therein to allow the electrolyte to flow in. Claim 6 In claim 4, the photoelectrochemical cell performance measuring cell, wherein at least one inner wall is provided. Claim 7 In claim 1, the sample is a photoelectrochemical cell performance measurement cell having at least one of an oxidation electrode and a reduction electrode. Claim 8 In claim 1, the sample is a photoelectrochemical cell performance measurement cell in which an oxygen evolution reaction, a hydrogen evolution reaction, or a carbon dioxide reduction reaction occurs as light is irradiated inside the cell. Claim 9 In claim 1, the cell is a photoelectrochemical cell performance measuring cell that measures the efficiency of the photoelectrochemical reaction of the sample. Claim 10 A photoelectrochemical cell performance measuring cell according to claim 1, wherein the cell further comprises a gas line for injecting an inert gas, and the gas line is connected to at least one of a first penetration and a third penetration. Claim 11 A method for measuring the performance of a photoelectrochemical cell, comprising: a step of combining a working electrode sample, a reference electrode, and a counter electrode in a cell according to any one of claims 1 to 10; a step of introducing an electrolyte into the cell in which the sample, reference electrode, working electrode, and counter electrode are combined; a step of irradiating light into the cell in which the electrolyte is introduced; and a step of analyzing electrical data inside the cell in which the light is irradiated.

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