Electrochemical oxygen reduction device and storage box

Abstract

The utility model provides an electrochemical oxygen reduction device which comprises an oxygen reduction assembly, a first electrode assembly and a second electrode assembly. A cathode plate opposite to the anode plate; a membrane module comprising: a first membrane; an anode catalyst layer provided between the first membrane and the anode plate; and a cathode catalyst layer disposed between the first membrane and the cathode plate; wherein the oxygen reduction assembly is configured to generate an electrochemical reaction which consumes water and generates hydrogen ions at the anode catalyst layer and generate an electrochemical reaction which consumes oxygen and generates water at the cathode catalyst layer under the condition that direct current is applied to the anode plate and the cathode plate, and the electrochemical oxygen reduction device further comprises a second membrane, and a second membrane configured to allow moisture to pass through the second membrane and be delivered to the anode catalyst layer, but not allow oxygen to pass through the second membrane, where the second membrane is integrally formed with the first membrane. The utility model further provides a storage box comprising the electrochemical oxygen reduction device. The overall structure can be simplified, and manufacturing, installation and maintenance are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of electrochemistry and article storage, and in particular to an electrochemical oxygen reduction device and a storage box comprising the electrochemical oxygen reduction device. Background Art

[0002] For fresh food (e.g., vegetables, fruits, fresh meat, etc.), in order to ensure freshness and extend the storage period, it is usually stored in a storage box that can provide a low-oxygen, low-temperature environment (e.g., refrigerator, cold storage, refrigerated car, etc.). Therefore, in order to produce a low-oxygen, low-temperature fresh-keeping atmosphere, many existing storage boxes are equipped with a low-oxygen chamber and an electrochemical oxygen reduction device, so that the electrochemical reaction of the electrochemical oxygen reduction device consumes oxygen in the low-oxygen chamber, thereby extending the fresh-keeping time of fresh food.

[0003] The existing electrochemical oxygen reduction device generally includes an anode plate, a cathode plate and a membrane assembly (CCM, Catalyst Coated Membrane) located between the two, wherein the membrane assembly generally includes a proton exchange membrane (PEM, Proton Exchange Membrane), a cathode catalyst layer and an anode catalyst layer. The electrochemical oxygen reduction device is installed on the wall of the hypoxic chamber so that the cathode plate faces the inside of the hypoxic chamber and the anode plate faces the outside of the hypoxic chamber. When direct current is supplied to the anode plate and the cathode plate respectively, a water electrolysis reaction occurs at the anode catalyst layer, that is, 2H2O→O2+4H + +4e - , and the generated H + Passing through the proton exchange membrane to the cathode catalyst layer, oxygen reduction reaction occurs at the cathode catalyst layer, that is, O2+4H + +4e - →2H2O. In this way, when the electrochemical oxygen reduction device is working, the oxygen on one side of the cathode plate (ie, the inner side of the hypoxic chamber) can be continuously consumed, thereby providing a hypoxic atmosphere in the hypoxic chamber.

[0004] Since the water on one side of the anode plate (i.e., the outside of the hypoxic chamber) is continuously consumed, the water content in the surrounding environment on one side of the anode plate gradually decreases, causing the electrochemical reaction to be unable to continue. Therefore, a water tank is usually provided for the electrochemical oxygen reduction device, and water needs to be replenished in a timely manner to maintain the continuation of the electrochemical reaction. In addition, since the fresh food stored in the hypoxic chamber provides additional water to the cathode plate side, it may cause water condensation in the hypoxic chamber due to the accumulation of supersaturated water, which is not allowed for freshness preservation.

[0005] To solve the above problems, the prior art proposes to add a moisture permeable component so that the moisture on the cathode plate side can penetrate to the anode plate side. However, the existing moisture permeable component and the electrochemical oxygen reduction device are two separate components, and the overall structure is complex, which increases the manufacturing, installation and maintenance costs.

[0006] Therefore, it is necessary to improve the existing electrochemical oxygen reduction device and storage box. Utility Model Content

[0007] The purpose of the present application is to provide an electrochemical oxygen reduction device and a storage box including the electrochemical oxygen reduction device to overcome at least one of the above-mentioned technical problems.

[0008] To this end, according to one aspect of the present application, an electrochemical oxygen reduction device is provided, comprising: an oxygen reduction component, which includes: an anode plate; a cathode plate, which is arranged opposite to the anode plate; a membrane component, which is arranged between the anode plate and the cathode plate, and the membrane component includes: a first membrane; an anode catalyst layer, which is arranged between the first membrane and the anode plate; and a cathode catalyst layer, which is arranged between the first membrane and the cathode plate; wherein the oxygen reduction component is configured so that when direct current is applied to the anode plate and the cathode plate, an electrochemical reaction that consumes water and generates hydrogen ions occurs at the anode catalyst layer, and an electrochemical reaction that consumes oxygen and generates water occurs at the cathode catalyst layer, wherein the electrochemical oxygen reduction device also includes a second membrane, which is configured to allow water to pass through the second membrane and be transported to the anode catalyst layer, but does not allow oxygen to pass through the second membrane, wherein the second membrane is formed as a whole with the first membrane.

[0009] According to an embodiment of the present application, the first membrane and the second membrane are made of any one of a perfluorosulfonic acid proton exchange membrane, a partially fluorinated polymer proton exchange membrane, a non-fluorinated polymer proton exchange membrane and a composite proton exchange membrane.

[0010] According to an embodiment of the present application, the first film and the second film are located in the same plane, and the second film extends from at least one side of the first film.

[0011] According to an embodiment of the present application, the electrochemical oxygen reduction device further includes: a first end plate and a second end plate opposite to each other, wherein the oxygen reduction assembly and the second membrane are clamped between the first end plate and the second end plate.

[0012] According to an embodiment of the present application, the electrochemical oxygen reduction device further includes an elastic pad, which is clamped between the first end plate and the second end plate and is in contact with the first end plate or the second end plate.

[0013] According to an embodiment of the present application, the first end plate, the second end plate and the elastic pad are formed into corresponding grid shapes.

[0014] According to an embodiment of the present application, the electrochemical oxygen reduction device further includes a fan, and the fan is configured to make air flow through the anode plate toward the anode catalyst layer.

[0015] According to an embodiment of the present application, the electrochemical oxygen reduction device further includes a humidity sensor, and the fan is configured to operate according to an output signal of the humidity sensor.

[0016] According to an embodiment of the present application, the electrochemical oxygen reduction device further includes an oxygen sensor, and the electrochemical oxygen reduction device is configured to supply power to the anode plate and the cathode plate according to an output signal of the oxygen sensor.

[0017] According to another aspect of the present application, a storage box is provided, comprising: a shell defining an internal storage space; and the electrochemical oxygen reduction device described above, wherein the shell is provided with an opening, and the oxygen reduction component and the second membrane of the electrochemical oxygen reduction device are arranged in the opening so that the cathode plate of the oxygen reduction component faces the internal storage space.

[0018] By integrating the first membrane of the oxygen reduction assembly with the second membrane that allows water to pass but does not allow oxygen to pass, the overall structure of the electrochemical oxygen reduction device can be simplified, making it easier to manufacture, install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be understood that the embodiments described below are only used to explain the present application, rather than to limit the scope of the present application. In the accompanying drawings:

[0020] Figure 1 A schematic cross-sectional view of a storage box according to an embodiment of the present application is shown;

[0021] Figure 2 A schematic perspective view of an electrochemical oxygen reduction device according to an embodiment of the present application is shown;

[0022] Figure 3 A schematic perspective view of an electrochemical oxygen reduction device according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present application are described in detail below with reference to examples. In the embodiments of the present application, the present application is described by taking an electrochemical oxygen reduction device for a refrigerator and a storage box as a refrigerator as an example. However, it should be understood by those skilled in the art that these exemplary embodiments do not mean any limitation to the present application. In addition, the features in the embodiments of the present application can be combined with each other unless there is a conflict. In different drawings, the same parts are represented by the same figure numerals, and other parts are omitted for the sake of brevity, but this does not mean that the electrochemical oxygen reduction device and storage box of the present application cannot include other parts. It should be understood that the size, proportional relationship, number of parts, and order of steps of the method of each component in the drawings are not intended to limit the present application.

[0024] Refer to the following Figures 1 to 3 A storage box and an electrochemical oxygen reduction device thereof according to an embodiment of the present application will be described.

[0025] like Figure 1 As shown, the storage box 200 provided by the present application includes a housing 210 and an electrochemical oxygen reduction device 100 (as shown by the dotted line). The housing 210 defines an internal storage space, for example, for storing fresh food such as fruits, vegetables and fresh meat. The housing 210 is provided with an opening (not shown), and the electrochemical oxygen reduction device 100 can be arranged in the opening and form a seal around the opening. For example, in Figure 1 In the embodiment, the electrochemical oxygen reduction device 100 is formed as an integrated structure (which will be described in further detail below), so only one opening can be provided on the shell 210, thereby simplifying the installation and subsequent maintenance of the electrochemical oxygen reduction device 100 on the storage box 200 and facilitating the manufacture of the electrochemical oxygen reduction device 100 and the storage box 200.

[0026] In addition, the housing 210 may also include a door (not shown), which may be configured to be opened to allow items to be placed in the internal storage space, and may be closed to prevent oxygen from entering the internal storage space. When the electrochemical oxygen reduction device 100 is working, the oxygen in the internal storage space may be consumed and water may be generated. Therefore, the housing 210 may define a storage environment with a low oxygen atmosphere. For example, in the case where the storage box 200 is a refrigerator, the housing 210 may be the wall of a refrigerated drawer in the refrigerator or the wall of a refrigerated chamber. The storage box 200 of the present application is not limited to the above-mentioned refrigerator, but may also be a refrigerated warehouse, a refrigerated carriage, or a refrigerated cabin, etc.

[0027] like Figures 1 to 3As shown, the electrochemical oxygen reduction device 100 includes an oxygen reduction assembly 10. The oxygen reduction assembly 10 includes an anode plate 11, a cathode plate 12 and a membrane assembly (not shown), the cathode plate 12 is arranged to be opposite to the anode plate 11, and the membrane assembly is arranged between the anode plate 11 and the cathode plate 12. The membrane assembly includes a first membrane 15, an anode catalyst layer 13 and a cathode catalyst layer 14, wherein the anode catalyst layer 13 is arranged between the first membrane 15 and the anode plate 11, and the cathode catalyst layer 14 is arranged between the first membrane 15 and the cathode plate 12. In this way, the anode plate 11, the anode catalyst layer 13, the first membrane 15, the cathode catalyst layer 14 and the cathode plate 12 sequentially form a stacked structure of the oxygen reduction assembly 10. The electrochemical oxygen reduction device 100 may also include a DC power supply 30, the positive plate of the DC power supply 30 is connected to the anode plate 11, and the negative plate of the DC power supply 30 is connected to the cathode plate 12, so that the oxygen reduction assembly 10 is configured as an electrochemical cell capable of electrolyzing water. Therefore, when direct current is applied to the anode plate 11 and the cathode plate 12, an electrochemical reaction that consumes water and generates hydrogen ions occurs at the anode catalyst layer 13, and an electrochemical reaction that consumes oxygen and generates water occurs at the cathode catalyst layer 14. When the electrochemical oxygen reduction device 100 is disposed in the opening of the housing 210, the cathode plate 12 of the oxygen reduction assembly 10 faces the internal storage space of the housing 210. Therefore, as the electrochemical reaction proceeds, a low oxygen environment is formed in the internal storage space, which is conducive to the storage of fresh food, for example.

[0028] As the electrochemical reaction continues, the water on the anode plate 11 side of the oxygen reduction component 10 is continuously consumed. If it is not replenished, the electrolysis reaction cannot continue. At the same time, in addition to consuming oxygen, the cathode plate 12 side also generates water. If too much water accumulates, water condensation may occur and damage the items in the internal storage space. Therefore, the electrochemical oxygen reduction device 100 of the present application also includes a second membrane 20, which is configured to allow water to pass through it (such as Figure 1 The oxygen is transported to the anode catalyst layer 13, but oxygen is not allowed to pass through it, so the moisture in the internal storage space can be reduced, moisture can be provided to the anode catalyst layer 13, and a low oxygen atmosphere in the internal storage space can be maintained. The second membrane 20 can be formed as a whole with the first membrane 15, so the second membrane 20 and the oxygen reduction assembly 10 can be arranged in the same opening of the housing 210. Figure 2 and Figure 3 As shown, the first membrane 15 and the second membrane 20 are schematically distinguished by a dotted line, but the two are actually formed into one body. Therefore, not only the structure of the electrochemical oxygen reduction device 100 can be simplified, but also the structure of the storage box 200 can be simplified, thereby facilitating the manufacture, installation and maintenance of the electrochemical oxygen reduction device 100 and the storage box 200.

[0029] Specifically, the second membrane 20 has a first side and a second side opposite to each other, and the first side and the second side correspond to the anode plate 11 and the cathode plate 12, respectively. That is, when the oxygen reduction assembly 10 and the second membrane 20 are arranged in the opening of the housing 210, the first side of the second membrane 20 faces the outside of the housing 210 in a manner corresponding to the anode plate 11, and the second side of the second membrane 20 faces the inside of the housing 210, that is, the internal storage space, in a manner corresponding to the cathode plate 12. Therefore, when the electrochemical oxygen reduction device 100 is working, the moisture generated in the internal storage space can be transported to the outside of the housing 210 without destroying the low oxygen environment in the internal storage space. Further, the moisture passing through the second membrane 20 from the second side to the first side can be transported to the anode catalyst layer 13. Therefore, the moisture transmitted from the internal storage space to the outside of the housing 210 can be used to continue to maintain the electrolytic water reaction on one side of the anode plate 11, without providing a special water source for the electrochemical reaction on one side of the anode plate 11. Therefore, the electrochemical oxygen reduction device of the present application can achieve oxygen reduction and moisture transfer functions while having a simple structure.

[0030] As an example, the first membrane 15 and the second membrane 20 can be made of any one of a perfluorosulfonic acid proton exchange membrane, a partially fluorinated polymer proton exchange membrane, a non-fluorinated polymer proton exchange membrane, and a composite proton exchange membrane, but the present application is not limited thereto, but can adopt any known or later developed membrane that can achieve water permeability but oxygen impermeability. Since the first membrane 15 and the second membrane 20 can be made of the same material as an integral component, the production process can be simplified. For example, an anode catalyst layer and a cathode catalyst layer can be coated on both sides of a portion of a membrane, so that the portion is formed as the first membrane 15, and the remaining portion is formed as the second membrane 20. It should be noted that the anode plate 11, the cathode plate 12, the anode catalyst layer 13, and the cathode catalyst layer 14 of the oxygen reduction assembly 10 can be made of materials commonly used in the art, for example, the anode plate 11 and the cathode plate 12 can be made of conductive graphite, metal or composite conductive material, the anode catalyst layer 13 is made of platinum, iridium, ruthenium, etc., and the cathode catalyst layer 14 is made of platinum, palladium, etc., so this application will not be further described in detail.

[0031] It should be noted that in Figures 1 to 3 In the embodiment, the membrane assembly is shown to include a first membrane 15, an anode catalyst layer 13, and a cathode catalyst layer 14, but the present application is not limited thereto, and the membrane assembly may also include an anode gas diffusion layer and a cathode gas diffusion layer. The anode catalyst layer 13 may be formed as one body with the anode gas diffusion layer, and the cathode catalyst layer 14 may be formed as one body with the cathode gas diffusion layer.

[0032] like Figures 1 to 3 As shown, the first film 15 and the second film 20 may be located in the same plane, and the second film 20 extends from at least one side of the first film 15. Figure 2 In the embodiment, the second film 20 extends from one side of the four sides of the first film 15, and Figure 3 In the embodiment, the second film 20 extends from three of the four sides of the first film. However, the present application is not limited thereto, and the first film 15 and the second film 20 may not be located in the same plane. For example, the first film 15 may be located in a horizontal plane, and the second film 20 may be located in a vertical plane. In other words, the second film 20 may be bent relative to the first film 15. In addition, the second film 20 may also completely surround the first film 15. According to the opening design on the shell 210 of the storage box 200, the specific shapes of the first film 15 and the second film 20 may be appropriately adjusted. For example, the first film 15 and the second film 20 may be square, rectangular, circular, elliptical, etc.

[0033] like Figure 2 and Figure 3 As shown, the electrochemical oxygen reduction device 100 may further include a first end plate 51 and a second end plate 52 opposite to each other, and the oxygen reduction assembly 10 and the second membrane 20 are clamped between the first end plate 51 and the second end plate 52. In this way, the oxygen reduction assembly 10 and the second membrane 20 can form a whole, improve the rigidity of the whole, and avoid damage to the second membrane 20. In order to provide further enhanced clamping for the oxygen reduction assembly 10, a first clamping plate 53 may be provided on the first end plate 51 at a position corresponding to the oxygen reduction assembly 10, and a second clamping plate 54 may be provided under the second end plate 52, as shown in FIG. Figure 2 It should be understood that, if the first end plate 51 and the second end plate 52 can provide sufficient clamping, the clamping plate may not be provided. Figure 3 In addition, Figure 2 and Figure 3 As shown, a plurality of through holes may be provided at the edges of the first end plate 51 , the second end plate 52 , the first clamping plate 53 and the second clamping plate 54 , and clamping and fixing may be achieved by bolts passing through the through holes.

[0034] In addition, in order to clamp the oxygen reduction assembly 10 and the second membrane 20, the electrochemical oxygen reduction device 100 may further include an elastic pad 55, which is clamped between the first end plate 51 and the second end plate 52 and contacts the first end plate 51 or the second end plate 52. Figure 2 and Figure 3 As shown, the elastic pad 55 is in contact with the first end plate 51, that is, the elastic pad 55 is clamped between the first end plate 51 and the second membrane 20, but the elastic pad 55 can also be in contact with the second end plate 52, that is, the elastic pad 55 is clamped between the second membrane 20 and the second end plate 52. By providing the elastic pad 55, the oxygen reduction assembly 10 and the second membrane 20 are stably clamped, and local damage to the oxygen reduction assembly 10 and the second membrane 20 can be avoided. It should be noted that in Figure 2 and Figure 3Only one elastic pad is shown in the figure, but the electrochemical oxygen reduction device 100 of the present application may also include two or more elastic pads.

[0035] In order to facilitate the electrochemical reaction, the first end plate 51, the second end plate 52 and the elastic pad 55 are formed into corresponding grid shapes, that is, the grids of the three correspond to each other, thereby forming a gas channel. For example, water vapor enters the oxygen reduction assembly 10 through the first end plate 51 to participate in the water electrolysis reaction, and the generated water vapor passes through the second end plate 52 and the second membrane 20 and is transported to the outside. It should be noted that at the position corresponding to the oxygen reduction assembly 10, the first end plate 51, the second end plate 52 and the elastic pad 55 can have a finer grid than other positions, so as to provide more uniform clamping over the entire area of ​​the oxygen reduction assembly 10.

[0036] After the water (for example, in the form of water vapor) generated in the internal storage space is transported to the outside, it can be transported to the anode catalyst layer 13 of the oxygen reduction assembly 10 through air flow to participate in the water electrolysis reaction. However, the reaction requirements may not be met by natural air flow, so the electrochemical oxygen reduction device 100 may also include a fan (not shown), which is configured to allow air to flow through the anode plate 11 toward the anode catalyst layer 13. For example, the fan can be installed at the first end plate 51 and blow toward the first end plate 51, so that the moisture passing through the second membrane 20 is sucked to the anode catalyst layer 13, thereby accelerating the water electrolysis reaction. As another example, the fan can also be installed at the second end plate 52 and blow away from the second end plate 51, which can also achieve the above effect. As another example, the fan can also be installed on either side of the second membrane 20 so that the water vapor generated in the internal storage space can be quickly discharged and participate in the water electrolysis reaction of the oxygen reduction assembly 10. It should be noted that the electrochemical oxygen reduction device 100 may include more than one fan.

[0037] In order to facilitate accurate control of the humidity of the storage box 200, the electrochemical oxygen reduction device 100 may further include a humidity sensor 211. The humidity sensor 211 may generate an output signal indicating the humidity in the internal storage space of the housing 210 and / or the humidity outside the housing 210. When the humidity in the internal storage space is greater than the maximum threshold, the fan may be started to discharge the moisture in the internal storage space in a timely manner to avoid water condensation. Alternatively, when the humidity outside the housing 210 is less than the minimum threshold, the fan may also be started to maintain the water electrolysis reaction of the oxygen reduction component 10 by discharging water vapor from the internal storage space. Therefore, the fan may be configured to operate according to the output signal of the humidity sensor 211.

[0038] In order to ensure a low oxygen atmosphere, the electrochemical oxygen reduction device 100 may further include an oxygen sensor 212. For example, the oxygen sensor 212 may be disposed on one side of the second end plate 52, so that an output signal indicating the oxygen content in the internal storage space may be generated. When the oxygen content is detected to be greater than a threshold value, the electrochemical oxygen reduction device 100 may start to operate, that is, power is supplied to the anode plate 11 and the cathode plate 12, and a water electrolysis reaction is started to consume oxygen in the internal storage space. Therefore, the electrochemical oxygen reduction device 100 may be configured to supply power to the anode plate 11 and the cathode plate 12 according to the output signal of the oxygen sensor 212.

[0039] In addition, the electrochemical oxygen reduction device 100 may further include a controller 220, which is configured to receive and process output signals from the humidity sensor 211 and the oxygen sensor 212, and control the operation of the fan and the power supply of the DC power supply 30 to the oxygen reduction assembly 10 based on the output signals, thereby providing accurate and effective control over the operation of the electrochemical oxygen reduction device 100.

[0040] From the above description, it can be seen that the present application realizes an electrochemical oxygen reduction device and storage box with a simplified structure, which can not only maintain the electrochemical reaction to achieve the function of reducing oxygen and water, but also is easy to manufacture, install and maintain.

[0041] The present application has been described in detail above in conjunction with specific embodiments. Obviously, the above description and the embodiments shown in the accompanying drawings should be understood as exemplary and do not constitute a limitation to the present application. For those skilled in the art, various modifications or changes can be made to the present application without departing from the spirit of the present application, and these modifications or changes do not depart from the scope of the present application.

Claims

1. An electrochemical oxygen reduction device (100), comprising: An oxygen reduction assembly (10) comprising: Anode plate (11); a cathode plate (12) arranged opposite to the anode plate (11); A membrane assembly is arranged between the anode plate (11) and the cathode plate (12), and the membrane assembly comprises: a first film (15); an anode catalyst layer (13) disposed between the first membrane (15) and the anode plate (11); and a cathode catalyst layer (14) disposed between the first membrane (15) and the cathode plate (12); The oxygen reduction assembly (10) is configured such that, when direct current is applied to the anode plate (11) and the cathode plate (12), an electrochemical reaction occurs at the anode catalyst layer (13) that consumes water and generates hydrogen ions, and an electrochemical reaction occurs at the cathode catalyst layer (14) that consumes oxygen and generates water. It is characterized in that the electrochemical oxygen reduction device (100) also includes a second membrane (20), which is configured to allow moisture to pass through the second membrane (20) and be transported to the anode catalyst layer (13), but not allow oxygen to pass through the second membrane (20), wherein the second membrane (20) is formed as a whole with the first membrane (15).

2. The electrochemical oxygen reduction device (100) according to claim 1, characterized in that: The first membrane (15) and the second membrane (20) are made of any one of a perfluorosulfonic acid proton exchange membrane, a partially fluorinated polymer proton exchange membrane, a non-fluorinated polymer proton exchange membrane and a composite proton exchange membrane.

3. The electrochemical oxygen reduction device (100) according to claim 2, characterized in that: The first film (15) and the second film (20) are located in the same plane, and the second film (20) extends from at least one side of the first film (15).

4. The electrochemical oxygen reduction device (100) according to any one of claims 1 to 3, characterized in that: The electrochemical oxygen reduction device (100) further comprises: A first end plate (51) and a second end plate (52) are opposite to each other, wherein the oxygen reduction assembly (10) and the second membrane (20) are clamped between the first end plate (51) and the second end plate (52).

5. The electrochemical oxygen reduction device (100) according to claim 4, characterized in that: The electrochemical oxygen reduction device (100) further comprises an elastic pad (55), wherein the elastic pad (55) is clamped between the first end plate (51) and the second end plate (52) and is in contact with the first end plate (51) or the second end plate (52).

6. The electrochemical oxygen reduction device (100) according to claim 5, characterized in that: The first end plate (51), the second end plate (52) and the elastic pad (55) are formed into corresponding grid shapes.

7. The electrochemical oxygen reduction device (100) according to claim 1, characterized in that: The electrochemical oxygen reduction device (100) further comprises a fan, which is configured to allow air to flow through the anode plate (11) toward the anode catalyst layer (13).

8. The electrochemical oxygen reduction device (100) according to claim 7, characterized in that: The electrochemical oxygen reduction device (100) further comprises a humidity sensor (211), and the fan is configured to operate according to an output signal of the humidity sensor (211).

9. The electrochemical oxygen reduction device (100) according to claim 8, characterized in that: The electrochemical oxygen reduction device (100) further comprises an oxygen sensor (212), and the electrochemical oxygen reduction device (100) is configured to supply power to the anode plate (11) and the cathode plate (12) according to an output signal of the oxygen sensor (212).

10. A storage box (200), characterized in that: The storage box (200) comprises: a housing (210) defining an internal storage space; and The electrochemical oxygen reduction device (100) according to any one of claims 1 to 9, The shell (210) is provided with an opening, and the oxygen reduction component (10) and the second membrane (20) of the electrochemical oxygen reduction device (100) are arranged in the opening so that the cathode plate (12) of the oxygen reduction component (10) faces the internal storage space.

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