WO2011162431A1 - 연료전지용 분리판 및 그 제조 방법 - Google Patents
연료전지용 분리판 및 그 제조 방법 Download PDFInfo
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- WO2011162431A1 WO2011162431A1 PCT/KR2010/004117 KR2010004117W WO2011162431A1 WO 2011162431 A1 WO2011162431 A1 WO 2011162431A1 KR 2010004117 W KR2010004117 W KR 2010004117W WO 2011162431 A1 WO2011162431 A1 WO 2011162431A1
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- separator
- fuel cell
- plasma
- manufacturing
- metal
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- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
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- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
- H01M8/0208—Alloys
- H01M8/021—Alloys based on iron
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- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
- H01M8/0228—Composites in the form of layered or coated products
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0232—Metals or alloys
-
- 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
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0241—Composites
- H01M8/0245—Composites in the form of layered or coated products
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- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a separator for a fuel cell and a method of manufacturing the same, and more particularly, to a separator of a polymer electrolyte fuel cell (PEMFC), and having excellent corrosion resistance, conductivity, and durability, and low temperature plasma (Non-Thermal).
- PEMFC polymer electrolyte fuel cell
- Non-Thermal low temperature plasma
- the present invention relates to a technique of preparing a surface coating layer having a hydrophilic treatment using Plasma) to maximize water or gas flowability.
- the bipolar plate, together with the membrane electrode assembly (MEA), is a key part of the fuel cell.
- the material properties of the separator include excellent electrical conductivity, thermal conductivity, gas tightness, and chemical stability.
- Such a separating plate As a material of such a separating plate, it has been manufactured using a graphite-based material and a composite graphite material in which resin and graphite are mixed.
- the metal When the metal is applied as the material of the separator, it is possible to reduce the volume and weight of the fuel cell stack by reducing the thickness of the separator and to manufacture by stamping, thereby securing mass productivity.
- the corrosion of the metal generated when the fuel cell is used may cause contamination of the membrane electrode assembly, thereby degrading the fuel cell stack performance.
- a thick oxide film may be grown on the metal surface when used for a long time, which may increase the internal resistance of the fuel cell.
- stainless steel steel titanium alloys, aluminum alloys and nickel alloys are considered as candidate materials.
- the double stainless steel has attracted much attention as a separator material due to the relatively low material cost and excellent corrosion resistance, but still does not show satisfactory levels in terms of corrosion resistance and electrical conductivity.
- a gasket is formed between the separator and the separator to form a stack.
- the surface of the metal separator is changed to a hydrophobic characteristic, causing a problem of deterioration of the flow of cooling water and fuel gas. do.
- An object of the present invention is to solve the above-described problem, and by forming a surface modification layer using a non-thermal plasma treatment on the surface of a separator plate, the operation of the hot-humid fuel cell as well as the gasket formation step. It is possible to maintain excellent corrosion resistance and conductivity (contact resistance) even when exposed to the environment for a long time, and to provide a separator for a fuel cell and improved manufacturing method of water or gas flow characteristics.
- the surface of the fuel cell separator is modified so that the surface of the fuel cell separator has hydrophilicity to smooth water flow characteristics and gas flow characteristics. It features.
- the separator for fuel cells is characterized in that the stainless steel substrate or a stainless steel substrate comprising a coating layer, the surface modification is characterized in that it comprises a low temperature plasma treatment.
- the low temperature plasma treatment is characterized by spraying a plasma containing at least one selected from oxygen (O 2 ), nitrogen (N 2 ), hydrogen (H 2 ) and argon (Ar) on the surface of the metal separator. And, while performing for 1 to 600 seconds, the surface roughness of the metal separator is characterized in that it is carried out so that Ra 0.001 ⁇ 1 ⁇ m.
- the manufacturing method of the fuel cell separator comprises the steps of (a) forming a metal separator plate for the fuel cell, (b) pre-treating the surface of the metal separator plate and (c) the ( and performing a low temperature plasma treatment on the surface of the pretreated metal separator plate of step b) to form a plasma hydrophilic treatment layer.
- the (b) pretreatment may include at least one of (b-1) wet cleaning the surface of the metal separator plate and (b-2) dry cleaning the surface of the metal separator plate. do.
- step (b-1) wet cleaning is performed for 5 to 10 minutes using acetone or ethanol
- step (b-2) dry cleaning is performed using a low temperature plasma cleaning method.
- the method may further include forming a coating layer on the surface of the metal separation plate between the (b) pretreatment step and the (c) low temperature plasma treatment step, wherein the coating layer is a dry or wet coating layer. It is done.
- the separator for fuel cells according to the present invention is manufactured by the method of claim 1, characterized in that it has a plasma hydrophilic treatment layer is modified corrosion resistance, conductivity and water flow characteristics.
- the plasma hydrophilic treatment layer has a corrosion current (corrosion resistance) of 10 mA / cm 2 (@ 0.9VNHE) or less, a contact resistance (conductivity) of 25 m ⁇ cm 2 or less, and a hydrophilicity having a surface contact angle of 30 ° or less ( Water flow characteristics).
- the plasma hydrophilic treatment layer is characterized in that the thickness of 1 ⁇ 10,000nm.
- the separator for a fuel cell manufactured according to the present invention forms a surface modification layer using a non-thermal plasma treatment, thereby preventing the hydrophobic characteristic generated in the gasket forming process.
- a non-thermal plasma treatment thereby preventing the hydrophobic characteristic generated in the gasket forming process.
- the manufacturing method of the fuel cell separator plate according to the present invention can obtain excellent durability even if using a low-cost conventional stainless steel sheet base material, by using a low-temperature plasma surface treatment method, the surface treatment can be made at a low cost Provides an effect of lowering the manufacturing cost of the separator for fuel cell.
- FIG. 1 is a cross-sectional view showing a low-temperature plasma hydrophilic treatment layer according to the present invention.
- FIG. 2 is a flowchart illustrating a step of forming a separator plate for a fuel cell according to the present invention.
- 3 to 7 are cross-sectional views illustrating a method of manufacturing a separator for a fuel cell according to the present invention.
- FIG. 8 is a conceptual diagram illustrating a method of measuring contact resistance of a separator for fuel cells according to the present invention.
- FIG. 9 is a cross-sectional photograph showing the hydrophilicity of the low-temperature plasma hydrophilic treatment layer according to the present invention.
- FIG. 10 is a cross-sectional view showing the hydrophilicity of the low-temperature plasma hydrophilic treatment layer according to the present invention.
- FIG. 1 is a cross-sectional view showing a low-temperature plasma hydrophilic treatment layer according to the present invention.
- a dry or wet coating layer 110 is formed on the separator plate 100, and a plasma hydrophilic treatment layer 120 is formed on the coating layer 110.
- the separator 100 is a metal or graphite separator can be used without limitation, in the present invention, it is preferable to use a metal separator plate of stainless steel material (including SUS 316L).
- the metal separator plate made of stainless steel is easier to process a flow path or manifold than other separator plates, and has excellent corrosion resistance and durability, and thus may have an optimal effect as a separator plate for a fuel cell according to the present invention.
- a base material of the metal separator plate of the stainless steel material used in the present invention can be presented a stainless steel containing 16 to 28wt% chromium component, more specifically stainless steel containing about 18wt% chromium component Stills can be presented.
- Detailed components of the metal separator plate made of stainless steel include 0.08 wt% or less of carbon (C), 16 to 28 wt% of chromium (Cr), 0.1 to 20 wt% of nickel (Ni), and 0.1 to 6 wt. % Molybdenum (Mo), 0.1-5 wt% tungsten (W), 0.1-2 wt% tin (Sn), 0.1-2 wt% copper and other residual amounts of iron (Fe) can be presented.
- C carbon
- Cr chromium
- Ni nickel
- Mo Molybdenum
- Mo 0.1-5 wt% tungsten
- Sn 0.1-2 wt% tin
- copper and other residual amounts of iron (Fe) can be presented.
- SUS 316L having a thickness of 0.1 to 0.2 t which is austenitic stainless steel, may be used.
- the coating layer 110 may be at least one selected from a coating layer using a dry process such as PVD (Physical Vapor Deposition) and a coating layer using a wet process such as electroplating, electroless plating, CVD (Chemical Vapor Deposition). .
- a dry process such as PVD (Physical Vapor Deposition)
- a coating layer using a wet process such as electroplating, electroless plating, CVD (Chemical Vapor Deposition).
- the coating layer 110 may be formed only on one side of the separation plate, and may be formed on both sides.
- the coating layer 110 is formed to ensure the corrosion resistance and conductivity of the separator at the same time, gold (Au), platinum (Pt), ruthenium (Ru), iridium (Ir), ruthenium oxide (RuO 2 ) and oxidation It is preferable to use either iridium (IrO 2 ).
- a metal oxide component is formed on the surface.
- Such a metal oxide may maintain corrosion resistance.
- the conductivity is increasingly adversely affected.
- the coating layer 110 is formed by using a material having excellent corrosion resistance and conductivity as described above. As a result, it is possible to manufacture a fuel cell separator having excellent corrosion resistance and conductivity even during initial use as well as for long term use.
- the coating layer 110 according to the present invention is preferably formed with a coating density of 1 ⁇ 500 ⁇ g / cm2.
- the coating density is less than 1 ⁇ g / cm2 may not be able to secure the target conductivity, if it exceeds 500 ⁇ g / cm2 may not have the effect of improving the effectiveness of the conductivity as proportional to the increase in coating amount does not appear effective .
- the plasma hydrophilic treatment layer 120 on the coating layer 110, it is possible to improve the water flow characteristics of the separator plate and to ensure a stable corrosion resistance and conductivity.
- the plasma hydrophilic treatment layer 120 is preferably formed using a low temperature plasma treatment process including an atmospheric pressure plasma or an atmospheric pressure plasma, and a detailed process thereof will be described below.
- FIG. 2 is a flowchart illustrating a step of forming a separator plate for a fuel cell according to the present invention.
- the process of forming the plasma hydrophilic treatment layer according to the present invention includes forming a metal separator (S100) and performing wet cleaning to form a coating layer on the surface of the metal separator (S110). ), And performing a dry cleaning (S120), forming a coating layer (S130) and performing an atmospheric pressure (low temperature) plasma treatment (S140).
- the coating layer (S130) is not an essential process. Therefore, if necessary, the surface modification layer may be formed only by the wet cleaning step S110 and the dry cleaning step S120. In this case, it is preferable to use atmospheric pressure plasma treatment in the dry cleaning step (S120).
- 3 to 7 are cross-sectional views illustrating a method of manufacturing a separator for a fuel cell according to the present invention.
- a metal separator 200 is manufactured.
- the metal separator is a separator used in a polymer electrolyte fuel cell (PEMFC) to which a high-humidity environment is applied, and a material having excellent corrosion resistance, conductivity, and durability should be used.
- PEMFC polymer electrolyte fuel cell
- a wet cleaning process for removing organic / inorganic matter from the surface of the metal separator 200 is performed as a first pretreatment before coating.
- a method of spraying a cleaning solution such as acetone or ethanol, may be used after the cleaning solution spraying device 310 is disposed on the metal separation plate 200, but is not always limited thereto.
- the cleaning process is preferably carried out for 5 to 10 minutes, if less than 5 minutes there may be a problem that the removal of the organic / inorganic is not performed completely, if more than 10 minutes, excessive cleaning process is performed As a result, abnormalities may occur on the surface of the separator plate.
- a dry cleaning process is performed after placing the dry cleaning device 320 on the metal separation plate 200 as a secondary pretreatment process.
- the atmospheric plasma cleaning method follows a low temperature plasma process for producing a hydrophilic treatment layer, which will be described later, so that it can be described in detail below.
- the coating layer 230 is formed as a process for securing corrosion resistance and conductivity of the metal separator 200.
- the coating layer 230 follows the coating layer manufacturing method according to the description of FIG. 1, and preferably forms a PVD coating layer.
- the plasma hydrophilic treatment layer 240 is formed by performing a low temperature plasma treatment on the surface of the coating layer 230 as the outermost layer of the metal separator 200.
- the low temperature plasma device 350 sprays plasma on the surface of the metal separation plate 200 in the air or under a gas discharge at room temperature and atmospheric pressure so that the surface molecular structure can be changed.
- the low-temperature plasma treatment method is a method of irradiating from the upper portion of the metal separation plate 200 as shown, it is possible to design an in-line production facility, there is an advantage of high productivity.
- a plasma containing at least one selected from oxygen (O 2 ), nitrogen (N 2 ), hydrogen (H 2 ), and argon (Ar) may be used, it has various processing functions and has a wide range of treatment targets. It can be processed and maintenance cost is low.
- the low temperature plasma treatment method according to the present invention can be formed to form a plasma hydrophilic treatment layer 240 of 1 ⁇ 10,000nm thickness while performing for 1 ⁇ 600 seconds.
- the surface roughness of the metal separator 200 according to the present invention is preferably set to Ra 0.001 to 1 ⁇ m, so as to have hydrophilicity (water flow characteristic) having a surface contact angle of 30 ° or less.
- the metal separation plate 200 including the plasma hydrophilic treatment layer 240 may have a corrosion current of 10 mA / cm 2 (@ 0.9VNHE) or less, thereby improving corrosion resistance, and improving contact resistance of 25 m ⁇ cm 2 or less. To improve conductivity.
- contact resistance was measured for conductivity measurement, and the following contact resistance measuring apparatus was used.
- FIG. 8 is a conceptual diagram illustrating a method of measuring contact resistance of a separator for fuel cells according to the present invention.
- the contact resistance of the metal separator 500 was measured, and a modified Davides method was used to obtain an optimized constant for cell fastening.
- contact resistance was measured in the range of 10 kHz to 10 mHz with a DC current having an amplitude of 0.5 A in the measurement area and an electrode area of 25 cm 2 in the constant current mode.
- the carbon paper 520 used 10BB of SGL Corporation.
- the contact resistance measuring device 50 is provided with carbon paper 520 and gold plated copper plate 510 up and down with the metal separator 500 therebetween, and the copper plate 510. Is connected to the current supply device 530 and the voltage measurement device 540.
- the voltage was measured by applying a current of 5 A to a DC current having an amplitude of 0.5 A and an electrode area of 25 cm 2 using a current supply device 530 (IM6 manufactured by Zahner) capable of supplying current to the metal separator 500.
- a current supply device 530 IM6 manufactured by Zahner
- Instron Co., Ltd. provides a pressure so that the metal separating plate 500, the carbon paper 520, and the copper plate 510 have a stacked structure above and below the copper plate 510 of the contact resistance measuring device 50.
- a model 5566 compression holding tester was used, and the measurement was performed by providing a pressure of 50 to 150 N / cm 2 .
- the contact resistance according to the present invention was confirmed to have a contact resistance of 25m ⁇ cm 2 or less.
- EG & G 273A was used.
- the anode environment is an environment in which hydrogen is separated into hydrogen ions and electrons in a membrane-electrode assembly (MEA), and the cathode environment is a combination of oxygen and hydrogen ions and electrons. It is the environment where reactions that produce water occur.
- MEA membrane-electrode assembly
- the potential of the cathode environment is high as in the above conditions, and it is a more severe corrosion condition, it is preferable to test the corrosion resistance based on the cathode environment.
- the corrosion current density of the metal separator be 10 mm / cm 2 or less.
- the coating layer was not formed, and a heat treatment process was performed for 30 minutes within a range of 50 ° C to 400 ° C.
- the target value of the corrosion current density was set to a value of 10 mA / cm 2 or less, and as a result, it was exceeded the reference value at 50 °C, it was possible to obtain the target corrosion resistance at a temperature of 80 °C or more.
- FIG. 9 is a cross-sectional photograph showing the hydrophilicity of the low-temperature plasma hydrophilic treatment layer according to the present invention.
- FIG 9 shows a state in which water droplets are spread over the metal separator plate according to the present invention, it can be seen that the surface contact angle is formed relatively low.
- FIG. 10 is a cross-sectional view showing the hydrophilicity of the low-temperature plasma hydrophilic treatment layer according to the present invention.
- the water droplet 650 is fixed on the hydrophilic treatment layer 640 formed on the metal separator 600, and it can be seen that the surface contact angle ⁇ is 30 ° or less. .
- a 0.1t-thick metal separation plate was manufactured using stainless steel (SUS 316L) containing 18 wt% of chromium, and washed for 5 minutes in acetone by a pretreatment process, and then subjected to low temperature plasma treatment using O 2 and Ar for 5 minutes. Was performed.
- Example 1 All processes performed in Example 1 were performed in the same manner, but after forming a Au coating layer having a coating density of 250 ⁇ g / cm 2 using a CVD process, a low temperature plasma treatment was performed.
- Example 1 All processes performed in Example 1 were carried out in the same manner, but after the pretreatment process, a Pt coating layer having a coating density of 250 ⁇ g / cm 2 was formed using a PVD process, followed by low temperature plasma treatment.
- a 0.1t thick metal separator was manufactured using stainless steel (SUS 316L) containing 18 wt% of chromium.
- the separator for fuel cell can obtain excellent corrosion resistance and conductivity by the low temperature plasma hydrophilic treatment layer, and has a low surface contact angle, thereby improving hydrophilic characteristics of water or gas flow characteristics. Can have.
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Abstract
Description
구분 | 표면 처리 | 내식성(mA/cm2) | 전도성(mΩcm2) | 접촉각(°) | |||
전처리(건식or습식) | 습식코팅 | 건식코팅 | 저온플라즈마 처리 | ||||
비교예 1 | X | X | X | X | 7.68 | 126.8 | 76 |
비교예 2 | O | X | X | X | 2.85 | 37.5 | 68 |
비교예 3 | O | O | X | X | 0.65 | 27 | 64 |
비교예 4 | O | X | O | X | 0.02 | 21 | 78 |
실시예 1 | O | X | X | O | 2.56 | 25.0 | 28 |
실시예 2 | O | O | X | O | 0.45 | 24.5 | 24 |
실시예 3 | O | X | O | O | 0.01 | 18.7 | 15 |
Claims (16)
- 연료전지용 분리판의 표면이 친수성을 가지도록, 상기 연료전지용 분리판의 표면을 개질해주어 물 흐름 특성 및 가스 흐름 특성을 원활하게 해주는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 1 항에 있어서,상기 연료전지용 분리판은 스테인리스 스틸 기판 또는 코팅층을 포함하는 스테인리스 스틸 기판인 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 1 항에 있어서,상기 표면 개질은 저온플라즈마(Non-Thermal Plasma) 처리를 포함하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 3 항에 있어서,상기 저온플라즈마 처리는 상기 금속 분리판의 표면에 산소(O2), 질소(N2), 수소(H2) 및 아르곤(Ar) 중 선택된 하나 이상을 포함하는 플라즈마를 분사하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 3 항에 있어서,상기 저온플라즈마 처리는 1 ~ 600초 동안의 수행하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 3 항에 있어서,상기 저온플라즈마 처리는 상기 금속 분리판의 표면 조도는 Ra 0.001 ~ 1㎛가 되도록 수행하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- (a) 연료전지용 금속 분리판을 형성하는 단계;(b) 상기 금속 분리판 표면을 전처리하는 단계; 및(c) 상기 (b)단계의 전처리된 금속 분리판 표면에 저온플라즈마 처리를 수행하여 플라즈마 친수처리층을 형성하는 단계;를 포함하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 7 항에 있어서,상기 (b) 전처리하는 단계는(b-1) 상기 금속 분리판 표면을 습식 세정하는 단계 및(b-2) 상기 금속 분리판 표면을 건식 세정하는 단계 중 하나 이상을 포함하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 8 항에 있어서,상기 (b-1) 습식 세정하는 단계는 아세톤 또는 에탄올을 이용하여 5 ~ 10분 동안 수행하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 8 항에 있어서,상기 (b-2) 건식 세정하는 단계는 상압 플라즈마 세정법을 이용하여 수행하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 7 항에 있어서,상기 (b) 전처리 단계 및 상기 (c) 저온플라즈마 처리 단계 사이에 상기 금속 분리판의 표면에 코팅층을 형성하는 단계를 더 포함하는 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 11 항에 있어서,상기 코팅층은 건식 또는 습식 코팅층인 것을 특징으로 하는 연료전지용 분리판의 제조 방법.
- 제 1 항 내지 제 12 항 중 어느 한 항의 방법으로 제조하여, 내식성, 전도성 및 물 흐름 특성이 개질된 플라즈마 친수처리층을 갖는 것을 특징으로 하는 연료전지용 분리판.
- 제 13 항에 있어서,상기 플라즈마 친수처리층은 10mA/cm2 (@0.9VNHE)이하의 부식전류(내식성), 25mΩcm2 이하의 접촉저항 (전도성)을 갖는 것을 특징으로 하는 연료전지용 분리판.
- 제 13 항에 있어서,상기 플라즈마 친수처리층은 표면 접촉각(Contact angle)이 30°이하인 친수성(물 흐름 특성)을 갖는 것을 특징으로 하는 연료전지용 분리판.
- 제 13 항에 있어서,상기 플라즈마 친수처리층은 1 ~ 10,000nm의 두께인 것을 특징으로 하는 연료전지용 분리판.
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JP2013516483A JP5634604B2 (ja) | 2010-06-24 | 2010-06-24 | 燃料電池用分離板およびその製造方法 |
US13/805,883 US20130095413A1 (en) | 2010-06-24 | 2010-06-24 | Bipolar plate for a fuel cell and method of manufacturing the same |
CN201080067698.9A CN103003998B (zh) | 2010-06-24 | 2010-06-24 | 燃料电池用分离板及其制备方法 |
EP10853714.3A EP2587575A4 (en) | 2010-06-24 | 2010-06-24 | SEPARATING PLATE FOR FUEL CELL AND METHOD FOR MANUFACTURING THE SAME |
US14/595,816 US20150125620A1 (en) | 2010-06-24 | 2015-01-13 | Bipolar plate for a fuel cell and method of manufacturing the same |
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KR10-2010-0059880 | 2010-06-24 | ||
KR20100059880A KR101172163B1 (ko) | 2010-06-24 | 2010-06-24 | 연료전지용 분리판 및 그 제조 방법 |
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US13/805,883 A-371-Of-International US20130095413A1 (en) | 2010-06-24 | 2010-06-24 | Bipolar plate for a fuel cell and method of manufacturing the same |
US14/595,816 Division US20150125620A1 (en) | 2010-06-24 | 2015-01-13 | Bipolar plate for a fuel cell and method of manufacturing the same |
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WO2011162431A1 true WO2011162431A1 (ko) | 2011-12-29 |
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US (2) | US20130095413A1 (ko) |
EP (1) | EP2587575A4 (ko) |
JP (1) | JP5634604B2 (ko) |
KR (1) | KR101172163B1 (ko) |
CN (1) | CN103003998B (ko) |
WO (1) | WO2011162431A1 (ko) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP3204968A1 (en) * | 2014-10-06 | 2017-08-16 | Eos Energy Storage, LLC | Terminal assembly for bipolar electrochemical cell or battery |
KR20160082632A (ko) * | 2014-12-26 | 2016-07-08 | 주식회사 포스코 | 고분자 연료전지용 분리판 및 그 제조방법 |
KR101724456B1 (ko) * | 2015-07-27 | 2017-04-07 | 현대자동차 주식회사 | 연료전지용 분리판의 코팅 방법 및 연료전지용 분리판 |
KR101729037B1 (ko) | 2015-12-17 | 2017-04-24 | 주식회사 포스코 | 친수성 및 내식성이 향상된 고분자 연료전지 분리판용 스테인리스강 및 이의 제조 방법 |
KR101742088B1 (ko) | 2015-12-23 | 2017-06-01 | 주식회사 포스코 | 친수성 및 접촉저항이 향상된 고분자 연료전지 분리판용 스테인리스강 및 이의 제조 방법 |
US10892524B2 (en) | 2016-03-29 | 2021-01-12 | Eos Energy Storage, Llc | Electrolyte for rechargeable electrochemical cell |
KR102326043B1 (ko) | 2019-12-19 | 2021-11-15 | 주식회사 포스코 | 내식성이 우수한 고분자 연료전지 분리판용 스테인리스강 |
CN114824337A (zh) * | 2022-03-20 | 2022-07-29 | 苏州世椿新能源技术有限公司 | 一种氢燃料双极板生产线 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0975040A1 (en) * | 1998-02-06 | 2000-01-26 | Nisshinbo Industries, Inc. | Separator for fuel cells and method of manufacturing the same |
US20070003813A1 (en) * | 2005-06-30 | 2007-01-04 | General Motors Corporation | Stable conductive and hydrophilic fuel cell contact element |
EP1758185A1 (en) * | 2004-05-31 | 2007-02-28 | Matsushita Electric Industries Co., Ltd. | Polyelectrolyte fuel cell-use separator, polyelectrolyte fuel cell, method of evaluating polyelectrolyte fuel cell-use separator, and production method of polyelectrolyte fuel cell-use separator |
US20080076004A1 (en) * | 2006-07-26 | 2008-03-27 | Gm Global Technology Operations, Inc. | Method For Making Super-Hydrophilic And Electrically Conducting Surfaces For Fuel Cell Bipolar Plates |
JP2008520079A (ja) * | 2004-11-12 | 2008-06-12 | ゼネラル・モーターズ・コーポレーション | バイポーラプレートの親水性表面の改質 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW591714B (en) * | 2002-02-20 | 2004-06-11 | Radiiontech Co Ltd | Cleaning apparatus using atmospheric pressure plasma |
JP4147925B2 (ja) * | 2002-12-04 | 2008-09-10 | トヨタ自動車株式会社 | 燃料電池用セパレータ |
US6866958B2 (en) * | 2002-06-05 | 2005-03-15 | General Motors Corporation | Ultra-low loadings of Au for stainless steel bipolar plates |
JP4974495B2 (ja) * | 2004-09-21 | 2012-07-11 | 勝 堀 | 燃料電池用セパレータ、燃料電池用電極構造、それらの製造方法、及びこれを備えた固体高分子型燃料電池 |
JP5045867B2 (ja) * | 2005-05-23 | 2012-10-10 | 日清紡ホールディングス株式会社 | 燃料電池セパレータ |
US8455155B2 (en) * | 2006-11-22 | 2013-06-04 | GM Global Technology Operations LLC | Inexpensive approach for coating bipolar plates for PEM fuel cells |
US20090092874A1 (en) * | 2007-10-04 | 2009-04-09 | Gm Global Technology Operations, Inc. | Stable hydrophilic coating for fuel cell collector plates |
JP2009224151A (ja) * | 2008-03-14 | 2009-10-01 | Nissan Motor Co Ltd | 燃料電池セパレータ |
JP5175590B2 (ja) * | 2008-03-26 | 2013-04-03 | 株式会社神戸製鋼所 | 燃料電池用セパレータ及びその製造方法 |
US8497050B2 (en) * | 2008-07-29 | 2013-07-30 | GM Global Technology Operations LLC | Amorphous carbon coatings for fuel cell bipolar plates |
US8304143B2 (en) * | 2008-11-25 | 2012-11-06 | GM Global Technology Operations LLC | Conductive and hydrophilic coating for PEMFC bipolar plate |
JP2011216222A (ja) * | 2010-03-31 | 2011-10-27 | Jx Nippon Mining & Metals Corp | 燃料電池用セパレータ材料、それを用いた燃料電池用セパレータ及び燃料電池スタック、並びに燃料電池用セパレータ材料の製造方法 |
-
2010
- 2010-06-24 CN CN201080067698.9A patent/CN103003998B/zh active Active
- 2010-06-24 WO PCT/KR2010/004117 patent/WO2011162431A1/ko active Application Filing
- 2010-06-24 EP EP10853714.3A patent/EP2587575A4/en not_active Withdrawn
- 2010-06-24 JP JP2013516483A patent/JP5634604B2/ja active Active
- 2010-06-24 US US13/805,883 patent/US20130095413A1/en not_active Abandoned
- 2010-06-24 KR KR20100059880A patent/KR101172163B1/ko active IP Right Grant
-
2015
- 2015-01-13 US US14/595,816 patent/US20150125620A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0975040A1 (en) * | 1998-02-06 | 2000-01-26 | Nisshinbo Industries, Inc. | Separator for fuel cells and method of manufacturing the same |
EP1758185A1 (en) * | 2004-05-31 | 2007-02-28 | Matsushita Electric Industries Co., Ltd. | Polyelectrolyte fuel cell-use separator, polyelectrolyte fuel cell, method of evaluating polyelectrolyte fuel cell-use separator, and production method of polyelectrolyte fuel cell-use separator |
JP2008520079A (ja) * | 2004-11-12 | 2008-06-12 | ゼネラル・モーターズ・コーポレーション | バイポーラプレートの親水性表面の改質 |
US20070003813A1 (en) * | 2005-06-30 | 2007-01-04 | General Motors Corporation | Stable conductive and hydrophilic fuel cell contact element |
US20080076004A1 (en) * | 2006-07-26 | 2008-03-27 | Gm Global Technology Operations, Inc. | Method For Making Super-Hydrophilic And Electrically Conducting Surfaces For Fuel Cell Bipolar Plates |
Also Published As
Publication number | Publication date |
---|---|
EP2587575A4 (en) | 2014-07-23 |
CN103003998B (zh) | 2016-08-17 |
KR20110139825A (ko) | 2011-12-30 |
JP5634604B2 (ja) | 2014-12-03 |
JP2013535082A (ja) | 2013-09-09 |
US20130095413A1 (en) | 2013-04-18 |
KR101172163B1 (ko) | 2012-08-07 |
US20150125620A1 (en) | 2015-05-07 |
EP2587575A1 (en) | 2013-05-01 |
CN103003998A (zh) | 2013-03-27 |
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