CN115483411A - Fuel cell unit, fuel cell, power generation system, and power consumption device - Google Patents

Fuel cell unit, fuel cell, power generation system, and power consumption device Download PDF

Info

Publication number
CN115483411A
CN115483411A CN202211142234.0A CN202211142234A CN115483411A CN 115483411 A CN115483411 A CN 115483411A CN 202211142234 A CN202211142234 A CN 202211142234A CN 115483411 A CN115483411 A CN 115483411A
Authority
CN
China
Prior art keywords
fuel cell
diffusion layer
cathode
water
hydrophilic coating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211142234.0A
Other languages
Chinese (zh)
Inventor
李桦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Institute of Material Technology and Engineering of CAS
Original Assignee
Ningbo Institute of Material Technology and Engineering of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ningbo Institute of Material Technology and Engineering of CAS filed Critical Ningbo Institute of Material Technology and Engineering of CAS
Priority to CN202211142234.0A priority Critical patent/CN115483411A/en
Publication of CN115483411A publication Critical patent/CN115483411A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H01M8/04171—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal using adsorbents, wicks or hydrophilic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The application provides a fuel cell monomer, fuel cell, power generation system and consumer belongs to the fuel cell field. The fuel cell monomer comprises an anode plate, an anode diffusion layer, a membrane electrode, a cathode diffusion layer and a cathode plate which are arranged in sequence; wherein the contact angle between the surface of one side of the cathode diffusion layer close to the cathode plate and water is theta 1, and the theta 1 is more than or equal to 90 degrees; the surface of one side of the cathode plate, which is close to the cathode diffusion layer, is provided with a hydrophilic coating, the contact angle between the surface of the hydrophilic coating and water is theta 2, and the theta 2 is not more than 50 degrees. In the fuel cell monomer, the contact angle between the surface of one side of the cathode diffusion layer close to the cathode plate and water is larger, the contact angle between the surface of the hydrophilic coating layer of the cathode plate and water is smaller, and residual water is close to the surface of the hydrophilic coating layer and easily forms film-shaped flow on the surface of the hydrophilic coating layer, so that the water drainage capacity can be improved, and the power generation performance can be improved.

Description

Fuel cell unit, fuel cell, power generation system, and power consumption device
Technical Field
The present disclosure relates to the field of fuel cells, and more particularly, to a fuel cell, a power generation system, and a power consumption device.
Background
The fuel cell is a power generation device which directly converts chemical energy of hydrogen and oxygen into electric energy, the hydrogen diffuses outwards through the anode to react, and then the released electrons reach the cathode to react with the oxygen to generate water which is then discharged outwards.
In some current fuel cells, the water drainage capability is weak, and the residual water affects the gas reaction, reducing the rate of energy conversion, thereby causing a reduction in the power generation performance of the fuel cell.
Disclosure of Invention
The purpose of the present application is to provide a fuel cell unit, a fuel cell, a power generation system, and an electric device, which can improve the water drainage capability and thus improve the power generation performance.
The embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a fuel cell monomer, including an anode plate, an anode diffusion layer, a membrane electrode, a cathode diffusion layer, and a cathode plate, which are sequentially disposed;
wherein the contact angle between the surface of one side of the cathode diffusion layer close to the cathode plate and water is theta 1, and the theta 1 is more than or equal to 90 degrees; the surface of one side of the cathode plate, which is close to the cathode diffusion layer, is provided with a hydrophilic coating, the contact angle between the surface of the hydrophilic coating and water is theta 2, and the theta 2 is not more than 50 degrees.
The fuel cell monomer that this application embodiment provided, the contact angle of one side surface that the cathode diffusion layer is close to the negative plate and water is great, and the hydrophilic coating surface of negative plate is less with the contact angle of water, and remaining water is close to hydrophilic coating surface and forms membranous flow easily on hydrophilic coating surface, can improve drainage ability to improve the generating performance.
In some embodiments, 15 ≦ θ 2 ≦ 30.
In some embodiments, θ 1- θ 2 ≧ 90.
In some embodiments, θ 1 ≧ 120.
In some embodiments, θ 1 ≧ 135.
In the above embodiment, the hydrophilicity of the surface of the hydrophilic coating, the hydrophobicity of the surface of the cathode diffusion layer close to the cathode plate, or the difference between the hydrophilicity and the hydrophobicity of the surface of the cathode diffusion layer and the surface of the cathode plate are controlled according to specific standards, so that the residual water can be ensured to be close to the surface of the hydrophilic coating and form a film-shaped flow, and the implementation is convenient.
In some embodiments, the hydrophilic coating comprises the reaction product of electron beam grafting and UV crosslinking of monomers.
In the above embodiments, the hydrophilicity of the hydrophilic coating can better satisfy the design requirements of the present application.
In a second aspect, embodiments of the present application provide a fuel cell, including the fuel cell unit of the above embodiments, and an assembly seal member is disposed between two adjacent fuel cell units.
In a third aspect, embodiments of the present application provide a power generation system including the fuel cell unit of the above embodiments.
In a fourth aspect, embodiments of the present application provide an electric device, including the fuel cell unit of the foregoing embodiments.
The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a graph of the results of testing the drainage capacity of some of the experiments provided herein;
FIG. 2 is a graph of the results of testing the drainage capacity of all experiments provided herein;
FIG. 3 is a graph of the results of tests of power generation capability for some of the experiments provided herein.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below. The examples, in which specific conditions are not specified, were carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that, in the description of the present application, unless otherwise specified, the range of "a numerical value to" b numerical value "includes both the values" a "and" b ".
"multiple" in the description of "a plurality," "a plurality," etc., means a number greater than 2 (including the present number of 2).
In the present application, "and/or" such as "feature 1 and/or" feature 2 "refers to a set of three cases, which may be" feature 1 "alone," feature 2 "alone, and" feature 1 "plus" feature 2 "together.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The applicant has noted that in some current fuel cells, residual water tends to accumulate in the cathode diffusion layer below the flow field ridges of the cathode plate, impeding mass transfer, affecting the gas reaction rate, reducing the rate of energy conversion, and resulting in reduced power generation performance of the fuel cell.
In order to improve the drainage performance, some solutions proposed so far usually make the flow channels of the plates have a variable cross-section, that is, the cross-section of the flow channels varies along the extension direction of the flow channels. However, the flow channel of the scheme has complex shape design and higher processing difficulty and cost.
The applicant found through intensive studies that in the case where the contact angle of the surface of the diffusion layer with water is large, the hydrophilic treatment is performed on the surface of the polar plate on the side close to the diffusion layer, so that the residual water is closer to the surface of the polar plate on the side close to the diffusion layer. The improvement mode is simple, and on the basis, when the hydrophilicity of the surface of one side of the pole plate close to the diffusion layer reaches a specific standard, residual water can easily form film-shaped flow on the surface of one side of the pole plate close to the diffusion layer, so that the influence of the ridge of a flow field in the pole plate on the drainage capacity can be effectively reduced, the drainage capacity can be improved, and the power generation performance can be effectively improved.
Based on the above-described research, the fuel cell, the power generation system, and the electric device according to the present application will be specifically described below with reference to specific embodiments.
In a first aspect, an embodiment of the present application provides a fuel cell unit, including an anode plate, an anode diffusion layer, a membrane electrode, a cathode diffusion layer, and a cathode plate, which are sequentially disposed;
wherein the contact angle between the surface of one side of the cathode diffusion layer close to the cathode plate and water is theta 1, and the theta 1 is more than or equal to 90 degrees; the surface of one side of the cathode plate, which is close to the cathode diffusion layer, is provided with a hydrophilic coating, the contact angle between the surface of the hydrophilic coating and water is theta 2, and the theta 2 is not more than 50 degrees.
The fuel cell monomer is a small unit with a complete energy conversion function in the fuel cell; by combining at least two fuel cell units, a higher-power battery module, namely a fuel cell, can be obtained.
The anode plate and the cathode plate are also called bipolar plates, current collecting plates, flow field plates and the like, and one side of each anode plate and the cathode plate, which is close to the corresponding diffusion layer, can be provided with a flow field, an air inlet and a water outlet according to the requirement. By way of example, in the embodiments provided by the present application, a flow field including a plurality of straight flow channels distributed in parallel is disposed on one side of each plate close to the corresponding diffusion layer; the flow channels are groove parts of the flow field, and the interval parts between the flow channels are ridge parts of the flow field.
The hydrophilic coating refers to a membrane layer with hydrophilicity coated on the surface of one side of the cathode plate close to the cathode diffusion layer, and the hydrophilic coating at least completely covers the flow field area in the surface of one side of the cathode plate close to the cathode diffusion layer; in order to meet the design requirement of theta 2 in the application, the material of the hydrophilic coating can be directly and correspondingly selected according to the requirement, manufactured by referring to the prior art or newly designed.
The anode diffusion layer and the cathode diffusion layer are also called gas diffusion layers and play a role in supporting a catalyst layer, collecting current, conducting gas and discharging water of a reaction product in a fuel cell, and the materials of the anode diffusion layer and the cathode diffusion layer are carbon fiber paper, carbon fiber woven cloth, non-woven cloth, carbon black paper and the like.
The membrane electrode is also called proton exchange membrane, and has the functions of blocking and conducting protons, and the types of the membrane electrode are fluorine sulfonic acid type proton exchange membrane, nafion recast membrane, non-fluorine polymer proton exchange membrane, novel composite proton exchange membrane and the like.
In the present application, the fuel cell may also be provided with other conventional structures such as end plates, catalyst layers, sealing gaskets, and sealing rings, as needed. Wherein. The end plate is arranged at the outer side of the anode plate and the cathode plate; the catalytic layer is arranged between the diffusion layer and the membrane electrode; the sealing gasket and the sealing ring are used for sealing between the polar plate and the membrane electrode, and the diffusion layer is nested at the inner side of the diffusion layer.
The fuel cell monomer that this application embodiment provided, the contact angle of one side surface that the negative pole diffusion layer is close to the negative plate and water is great, and the hydrophilic coating surface of negative plate is less with the contact angle of water, and this improvement mode is simple, and moreover, remaining water is close to hydrophilic coating surface and forms filmlike flow easily on hydrophilic coating surface, can effectively reduce the influence that the ridge in flow field produced the drainage ability in the polar plate, can improve drainage ability to improve the electricity generation performance.
According to research, when theta 2 is gradually reduced, theta 2 is reduced to 50 degrees, and the spreading length of the residual liquid water on the surface of the cathode plate close to the cathode diffusion layer is obviously increased and can reach more than 5 mm. When the theta 2 is reduced to 30 degrees, the spreading length of the residual liquid water on the surface of one side, close to the cathode diffusion layer, of the cathode plate is further obviously increased, and the spreading length can be close to 10mm; when the angle theta 2 is reduced to 15 degrees, the spreading length of the residual liquid water on the surface of the cathode plate close to the cathode diffusion layer can be even improved to be close to 15mm, and the performance of forming film-shaped flow is better.
At a current density of 0.3A/cm 2 Compared with the drainage capacity of closed flow close to 0 formed in the flow field and the drainage capacity of drop-shaped flow at most formed in the flow field of about 0.1g/s, the drainage capacity of the flow field in the state of film-shaped flow can be improved to be close to 0.2g/s or more than 0.2g/s, and even can be improved to be close to 0.5g/s in the preferred scheme.
In some embodiments, 15 ≦ θ 2 ≦ 30 °, θ 2 values are, for example, without limitation, any one of 15 °, 20 °, 25 °, 30 °, and the like, or ranges between any two.
In some embodiments, θ 1- θ 2 ≧ 90 °, the difference between the two is, for example, but not limited to, any one of 90 °, 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, or the like, or a range between any two.
In some embodiments, θ 1 ≧ 120 °; in some embodiments, θ 1 ≧ 135 °; by way of example, the value of θ 1 is, for example, but not limited to, any one of 120 °, 125 °, 130 °, 135 °, and the like, or a range between any two.
In the above embodiment, the hydrophilicity of the surface of the hydrophilic coating, the hydrophobicity of the surface of the cathode diffusion layer close to the cathode plate, or the difference between the hydrophilicity and the hydrophobicity of the surface of the cathode diffusion layer and the surface of the cathode plate are controlled according to specific standards, so that the residual water can be ensured to be close to the surface of the hydrophilic coating and form a film-shaped flow, and the implementation is convenient.
In some embodiments, the hydrophilic coating comprises the reaction product of electron beam grafting and UV crosslinking of monomers. In the above embodiments, the hydrophilicity of the hydrophilic coating can better satisfy the design requirements of the present application.
As an example, the hydrophilic treatment method in patent application No. CN201310316785.9 may be specifically referred to.
The hydrophilic coating includes a first graft material, a second graft material, and a third graft material. Wherein the first grafting species comprises a reaction product of electron beam grafting and UV crosslinking of a grafting monomer having an acrylate group and a photoinitiator group. The second graft material comprises the reaction product of electron beam grafting and UV crosslinking of one or more monomers having at least one acrylate group and at least one additional ethylenically unsaturated, free-radically polymerizable group. The third graft material has the reaction product of electron beam grafting and UV crosslinking of one or more additional monomers having at least one ethylenically unsaturated, free-radically polymerizable group and a hydrophilic group. At least one of the monomers forming the second graft material and the third graft material is hydrophilic.
In the process of making the hydrophilic coating, an electron beam irradiation step facilitates subsequent UV-initiated crosslinking curing. The electron beam irradiation step employs, for example, a device including an electron beam source. The UV curing step is carried out, for example, under an inert atmosphere (nitrogen, carbon dioxide, helium, argon, etc.), and the UV light source may be of two types: 1) Light sources of relatively low intensity, such as backlights, typically provide 10mW/cm in the wavelength range of 280nm to 400nm 2 Or less intensity; 2) Light sources of relatively high intensity, e.g. medium pressure mercury lamps, typically providing more than 10mW/cm 2 The strength of (2). Where actinic radiation is used to fully or partially crosslink the oligomer composition, high intensity and short exposure times are preferred. For example, 600mW/cm can be used successfully 2 And an exposure time of about 1 s.
In a second aspect, embodiments of the present application provide a fuel cell, which includes at least two fuel cell units of the above embodiments, and an assembly seal member is disposed between two adjacent fuel cell units.
In the fuel cell, the arrangement of two adjacent fuel cells is not limited, and for example, the two adjacent fuel cells are stacked side by side in the thickness direction of the fuel cells in a conventional manner. The assembly seal is used for sealing and connecting the joints of two adjacent fuel cell units, and the arrangement form is not limited, and the assembly seal can be structured according to the conventional mode of the application, such as being configured to seal between the end plate edges of two adjacent fuel cell units.
In a third aspect, embodiments of the present application provide a power generation system including the fuel cell unit of the above embodiments.
The power generation system uses a fuel cell as a part or all of the power generation module, and other functional modules such as a power distributor, an energy storage system, an inverter, a power sensor, a control device and the like can be configured according to the need in a conventional manner.
In a fourth aspect, embodiments of the present application provide an electric device, including the fuel cell unit of the foregoing embodiments.
The electric equipment can be in various forms, such as mobile phones, portable equipment, notebook computers, battery cars, electric automobiles, ships, spacecrafts, electric toys, electric tools and the like.
The fuel cell unit, the fuel cell, the power generation system, and the electric device according to the present application will be specifically described below with reference to specific examples.
1. Providing a fuel cell
(1) And providing a cathode plate, and forming a hydrophilic coating with a specific theta 2 value for an experiment needing hydrophilic modification according to the electron beam grafting and UV crosslinking mode of the embodiment part.
(2) And selecting a cathode diffusion layer with a specific value of theta 1.
(3) And (3) sequentially arranging the cathode plate in the step (1) and the cathode diffusion layer, the membrane electrode, the anode diffusion layer and the anode plate in the step (2) to assemble a fuel cell monomer.
Wherein:
the model of the fuel cell unit refers to a Toyota MIRAI2 generation single cell.
The differences between the sets of experiments were: the contact angle between the surface of the cathode diffusion layer close to the cathode plate and water is large, and/or whether the surface of the cathode plate close to the cathode diffusion layer is provided with a hydrophilic coating or not and the contact angle between the surface of the cathode plate close to the cathode diffusion layer and water is large. The above conditions for each experiment are shown in table 1.
TABLE 1
Figure BDA0003853987390000081
Figure BDA0003853987390000091
In the experiment that the surface of the cathode plate is provided with the hydrophilic coating, the water contact angle of the surface of the cathode plate is the water contact angle of the surface of the hydrophilic coating.
2. Testing fuel cell Performance
(1) Drainage capability test
The test method comprises the following steps:
the model of the fuel cell unit refers to a Toyota MIRAI2 generation single cell. And detecting the water discharge amount of the water outlet, and taking the water discharge amount as an index of the water discharge capacity.
The test conditions included: the detection temperature is 70 ℃, the anode inlet air pressure is 220Kpa, the cathode inlet air pressure is 230Kpa, the anode inlet air metering ratio is 1.25, the cathode inlet air metering ratio is 1.5, the anode inlet air is humidified and the temperature is 45 ℃, and the cathode inlet air is not humidified.
The results of the tests of the drainage ability of the fuel cells corresponding to each experimental group are shown in fig. 1 to 2.
As can be seen from table 1 and fig. 1 to 2:
in the fuel cell provided in the example, the water contact angle of the surface of the cathode plate is small, the water contact angle of the surface of the cathode diffusion layer is large, and the water drainage capability is strong.
In example 1, the surface of the cathode diffusion layer has better hydrophobicity than that of example 2, so that the water discharge ability is further enhanced.
In comparative example 1, the surface of the cathode plate was not hydrophilically modified, and the drainage ability was significantly reduced, as compared to example 1.
Compared with the example 1, the surface of the cathode plate is not subjected to hydrophilic modification, the water contact angle of the surface of the cathode diffusion layer is relatively small, and the water drainage capacity is further remarkably reduced.
(2) Generated voltage test
The test method comprises the following steps:
the model of the fuel cell unit refers to a Toyota MIRAI2 generation single cell.
The test conditions included: the detection temperature is 70 ℃, the anode inlet air pressure is 220Kpa, the cathode inlet air pressure is 230Kpa, the anode inlet air metering ratio is 1.25, the cathode inlet air metering ratio is 1.5, the anode inlet air is humidified and the temperature is 45 ℃, and the cathode inlet air is not humidified.
The results of the test of the power generation capacity of the fuel cell unit corresponding to each experimental group are shown in fig. 3.
As can be seen from table 1 and fig. 3:
in the fuel cell provided in the example, the water contact angle of the surface of the cathode plate is small, the water contact angle of the surface of the cathode diffusion layer is large, and the power generation capability is strong.
In example 1, the surface of the cathode diffusion layer has better hydrophobicity than that of example 2, so that the power generation capability is further enhanced.
In comparative example 1, the surface of the cathode plate was not subjected to hydrophilic modification, and the power generation capacity was significantly reduced, as compared with example 1.
In comparison with example 1, the surface of the cathode plate is not hydrophilically modified, and the water contact angle of the surface of the cathode diffusion layer is relatively small, and the power generation capacity is further remarkably reduced.
The embodiments described above are some, but not all embodiments of the present application. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims (9)

1. A fuel cell monomer is characterized by comprising an anode plate, an anode diffusion layer, a membrane electrode, a cathode diffusion layer and a cathode plate which are arranged in sequence;
the contact angle between the surface of one side of the cathode diffusion layer close to the cathode plate and water is theta 1, and the theta 1 is more than or equal to 90 degrees; the surface of one side, close to the cathode diffusion layer, of the cathode plate is provided with a hydrophilic coating, the contact angle between the surface of the hydrophilic coating and water is theta 2, and the theta 2 is not more than 50 degrees.
2. The fuel cell according to claim 1, wherein θ 2 is 15 ° or more and 30 ° or less.
3. The fuel cell according to claim 1 or 2, wherein θ 1- θ 2 ≧ 90 °.
4. The fuel cell according to claim 1 or 2, wherein θ 1 is equal to or greater than 120 °.
5. The fuel cell according to claim 4, wherein θ 1 is 135 ° or more.
6. A fuel cell according to claim 1 or 2, wherein the hydrophilic coating comprises the reaction product of electron beam grafting and UV crosslinking of the monomer.
7. A fuel cell comprising at least two fuel cell units according to any one of claims 1 to 6, wherein a module seal is provided between adjacent two of the fuel cell units.
8. A power generation system comprising the fuel cell according to any one of claims 1 to 6.
9. An electric device comprising the fuel cell according to any one of claims 1 to 6.
CN202211142234.0A 2022-09-20 2022-09-20 Fuel cell unit, fuel cell, power generation system, and power consumption device Pending CN115483411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211142234.0A CN115483411A (en) 2022-09-20 2022-09-20 Fuel cell unit, fuel cell, power generation system, and power consumption device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211142234.0A CN115483411A (en) 2022-09-20 2022-09-20 Fuel cell unit, fuel cell, power generation system, and power consumption device

Publications (1)

Publication Number Publication Date
CN115483411A true CN115483411A (en) 2022-12-16

Family

ID=84423497

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211142234.0A Pending CN115483411A (en) 2022-09-20 2022-09-20 Fuel cell unit, fuel cell, power generation system, and power consumption device

Country Status (1)

Country Link
CN (1) CN115483411A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1877891A (en) * 2005-06-01 2006-12-13 通用汽车环球科技运作公司 Method of making hydrophilic fuel cell bipolar plate coating by plasma induced polymerization
US20070092785A1 (en) * 2005-10-25 2007-04-26 Honeywell International Inc. Fuel cell stack
CN101958421A (en) * 2009-07-20 2011-01-26 通用汽车环球科技运作公司 Conductive and the hydrophilic surface modification of fuel battery double plates
CN111564648A (en) * 2020-04-22 2020-08-21 天能电池集团股份有限公司 Fuel cell membrane electrode assembly, preparation method and fuel cell
CN111584879A (en) * 2019-12-31 2020-08-25 上海嘉资新材料有限公司 Gas diffusion layer, method for producing same, and corresponding membrane electrode assembly and fuel cell
CN114164439A (en) * 2021-12-08 2022-03-11 嘉庚创新实验室 Electrochemical reaction apparatus and method for producing oxygen
CN114744229A (en) * 2022-03-25 2022-07-12 东风汽车集团股份有限公司 Fuel cell module, fuel cell system, fuel cell power system, and vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1877891A (en) * 2005-06-01 2006-12-13 通用汽车环球科技运作公司 Method of making hydrophilic fuel cell bipolar plate coating by plasma induced polymerization
US20070092785A1 (en) * 2005-10-25 2007-04-26 Honeywell International Inc. Fuel cell stack
CN101958421A (en) * 2009-07-20 2011-01-26 通用汽车环球科技运作公司 Conductive and the hydrophilic surface modification of fuel battery double plates
CN111584879A (en) * 2019-12-31 2020-08-25 上海嘉资新材料有限公司 Gas diffusion layer, method for producing same, and corresponding membrane electrode assembly and fuel cell
CN111564648A (en) * 2020-04-22 2020-08-21 天能电池集团股份有限公司 Fuel cell membrane electrode assembly, preparation method and fuel cell
CN114164439A (en) * 2021-12-08 2022-03-11 嘉庚创新实验室 Electrochemical reaction apparatus and method for producing oxygen
CN114744229A (en) * 2022-03-25 2022-07-12 东风汽车集团股份有限公司 Fuel cell module, fuel cell system, fuel cell power system, and vehicle

Similar Documents

Publication Publication Date Title
US6322919B1 (en) Fuel cell and bipolar plate for use with same
EP1009052B1 (en) Polymer electrolyte fuel cell and method of manufacture thereof
US7622211B2 (en) Hydrophilic fuel cell bipolar plate having a plasma induced polymerization coating
US8785063B2 (en) Fuel cell stack with water drainage structure
EP1981112A2 (en) Method for activating fuel cell
US9450254B2 (en) Gas diffusion layer for fuel cell vehicle with improved operational stability
US7252747B2 (en) Composite proton exchange membrane and method of manufacturing the same
US20150118587A1 (en) Fuel cell stack including dummy cell
CN112615033A (en) Direct methanol fuel cell catalyst layer gradient membrane electrode and preparation method thereof
US10490829B2 (en) Method for manufacturing a fuel cell
US20090297919A1 (en) Gas diffusion layer of proton exchange membrane fuel cell system
US20080102334A1 (en) Pressure relief feature for a fuel cell stack
CN115483411A (en) Fuel cell unit, fuel cell, power generation system, and power consumption device
US11652221B2 (en) Separator assembly for air cooled fuel cell and fuel cell stack including the same
CN214336753U (en) Fuel cell and battery pack
US11791491B2 (en) Fuel cell
US6979510B2 (en) Solid polymer electrolyte membrane of a fuel cell and method for producing the same
CN113782752A (en) Membrane electrode, fuel cell and vehicle
KR20170099274A (en) Fuel cell separator and fuel cell stack including the same
WO2018143610A1 (en) Fuel cell stack
KR20010060112A (en) Polymer electrolyte fuel cell
CN218783060U (en) Fuel cell and battery pack
US11870115B2 (en) Air-cooled fuel cell system
US20240006622A1 (en) Fuel Cell
WO2003083986A1 (en) A proton exchange membrane fuel cell battery

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination