WO2017183791A1 - Plaque de séparation composite et son procédé de production - Google Patents

Plaque de séparation composite et son procédé de production Download PDF

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Publication number
WO2017183791A1
WO2017183791A1 PCT/KR2016/014111 KR2016014111W WO2017183791A1 WO 2017183791 A1 WO2017183791 A1 WO 2017183791A1 KR 2016014111 W KR2016014111 W KR 2016014111W WO 2017183791 A1 WO2017183791 A1 WO 2017183791A1
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WO
WIPO (PCT)
Prior art keywords
carbon fiber
woven fabric
fiber woven
resin
composite separator
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Application number
PCT/KR2016/014111
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English (en)
Korean (ko)
Inventor
김지연
김혜원
최성현
정승문
Original Assignee
(주)엘지하우시스
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Priority to JP2018554550A priority Critical patent/JP6722770B2/ja
Publication of WO2017183791A1 publication Critical patent/WO2017183791A1/fr

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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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0241—Composites
    • H01M8/0245—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
    • H01M8/0234—Carbonaceous 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
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/023—Porous and characterised by the material
    • H01M8/0239—Organic resins; Organic polymers
    • 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
    • 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 composite separator and a method for manufacturing the same, and more particularly, to a composite separator and a method of manufacturing the same that can improve the electrical conductivity in both the surface and the thickness direction.
  • the separator which is a component of the fuel cell stack, functions as a supply passage of reaction gas (hydrogen and oxygen) and a discharge passage of water, and electrically connects the inside of the fuel cell stack.
  • reaction gas hydrogen and oxygen
  • the separator requires excellent electrical conductivity, mechanical properties, corrosion resistance and low hydrogen permeability.
  • a separator plate is also included in a hydrogen fuel cell, a redox flow battery, and the like, which have attracted much attention among large secondary batteries.
  • the hydrogen fuel cell and the redox flow battery which operate in an acidic atmosphere are required to have characteristics such as electrical conductivity, mechanical properties, corrosion resistance, chemical resistance, and electrolyte impermeability.
  • thermosetting resin In order to satisfy this, conventionally, a composite separator plate in which a carbon fiber woven fabric is impregnated with a thermosetting resin is manufactured. In order to impart electrical conductivity to the composite separator, a large amount of conductive powder having high conductivity must be mixed inside the thermosetting resin.
  • Composite separator for achieving the above object is a carbon fiber woven material; Conductive powder filled in the carbon fiber woven fabric; And upper and lower conductive coating layers disposed on upper and lower surfaces of the carbon fiber woven fabric, respectively, and bonded to the carbon fiber woven fabric.
  • Method for producing a composite separator for achieving the above object (a) filling the conductive powder in the carbon fiber woven fabric; (b) forming upper and lower conductive coating layers on upper and lower surfaces of the carbon fiber woven fabric filled with the conductive powder; And (c) pressing and curing the carbon fiber woven fabric and the upper and lower conductive coating layers by a hot press to obtain a composite separator.
  • the composite separator according to the present invention and a method for manufacturing the same are first filled with a conductive powder in a powder state inside the carbon fiber woven fabric, and then forming upper and lower conductive coating layers on both surfaces of the carbon fiber woven fabric filled with the conductive powder.
  • the vertical electrical conductivity in the z-axis direction can be improved.
  • the composite separator according to the present invention can secure the surface electrical conductivity in the x-axis and y-axis directions by the upper and lower conductive coating layers formed on both sides of the carbon fiber woven fabric, and inside the carbon fiber woven fabric.
  • the filled conductive powder has a structure for organically connecting between the carbon fiber woven fabrics, vertical electrical properties in the z-axis direction may be improved, thereby improving contact resistance.
  • FIG. 1 is a cross-sectional view showing a composite separator according to an embodiment of the present invention.
  • Figure 2 is a perspective view of the carbon fiber woven fabric of Figure 1;
  • Figure 3 is a process flow chart showing a composite separation plate manufacturing method according to an embodiment of the present invention.
  • 4 to 6 is a cross-sectional view showing a method for manufacturing a composite separator according to an embodiment of the present invention.
  • FIG. 1 is a cross-sectional view showing a composite separator according to an embodiment of the present invention
  • Figure 2 is a perspective view showing a carbon fiber woven fabric of FIG.
  • the composite separator 100 includes a carbon fiber woven fabric 110, a conductive powder 120, and upper and lower conductive coating layers 130 and 140.
  • the conductive powder 120 is filled in the carbon fiber woven fabric 110
  • the carbon fiber woven fabric 110 filled with the conductive powder 120 is the upper and lower conductive coating layers (130, 140) and hot press (hot) It is pressed by the press method and has a structure where they mutually bond.
  • Carbon fiber woven fabric 110 is used as a core substrate (core) disposed in the middle of the composite separating plate 100, serves to improve the mechanical strength of the composite separating plate (100).
  • the carbon fiber woven fabric 110 preferably has a thickness of 200 ⁇ 400 ⁇ m. When the thickness of the carbon fiber woven fabric 110 is less than 200 ⁇ m, it may be difficult to secure mechanical strength due to its thickness being thin. On the contrary, when the thickness of the carbon fiber woven fabric 110 exceeds 400 ⁇ m, the thickness of the carbon fiber woven fabric 110 may increase the thickness and volume without increasing any further effects, resulting in weight reduction and thinning.
  • At least one carbon fiber woven fabric 110 may be stacked vertically.
  • the carbon fiber woven fabric 110 may be manufactured by weaving fiber bundles of 1,000 to 70,000 strands into weft and warp yarns, respectively. Accordingly, the carbon fiber woven fabric 110 may include the weft carbon fiber 112 disposed in the weft direction and the inclined carbon fiber 114 disposed in the inclined direction.
  • the fiber bundles of the carbon fiber woven fabric 110 has a circular or oval cross-sectional structure. And, the fiber bundles of the carbon fiber woven fabric 110 may have an average spacing of 1.5 ⁇ 2.0mm.
  • the conductive powder 120 is filled in the carbon fiber woven fabric 110.
  • the conductive powder 120 is filled in the interior of the carbon fiber woven fabric 110 by a coating method to improve the vertical electrical conductivity of the z-axis.
  • the conductive powder 120 is carbon nanotube, graphite powder, chopped carbon fiber, carbon black, carbon powder, graphite nanoplatelet. It may include one or more selected from (graphite nanoplate) and graphene (graphene).
  • the conductive powder 120 may be directly filled by the powder coating method inside the carbon fiber woven fabric 110.
  • the conductive powder 120 is applied to both surfaces of the carbon fiber woven fabric 110 by air spraying the dispersion dispersed in an organic solvent and an epoxy liquid resin having a viscosity of 100cp or less, and then dried to volatilize the organic solvent. It may also be coated in a manner.
  • organic solvent volatile ethanol, butanol, ethyl acetate, octanol, ethoxy ethanol pentanol, methoxy ethanol, ethylene glycol, acetone, tetrahydrofuran, dimethylformamide, dimethylamine, dichloromethane And one or more of diethyl ether may be used.
  • the upper and lower conductive coating layers 130 and 140 are disposed on the upper and lower surfaces of the carbon fiber woven fabric 110, respectively, and are bonded to the carbon fiber woven fabric 110.
  • the upper and lower conductive coating layers 130 and 140 are bonded to the carbon fiber woven fabric 110 by a hot pressing process.
  • the upper and lower conductive coating layers 130 and 140 have a structure in which some of the upper and lower conductive coating layers 130 and 140 are impregnated into the carbon fiber woven fabric 110 to be integrally connected to each other.
  • the upper and lower conductive coating layers 130 and 140 preferably have a thickness of 5 ⁇ 100 ⁇ m respectively.
  • the thickness of each of the upper and lower conductive coating layers 130 and 140 is less than 5 ⁇ m, the handling is difficult because the thickness is too thin, and there is a problem that the surface electrical conductivity is lowered.
  • the thickness of each of the upper and lower conductive coating layers 130 and 140 exceeds 100 ⁇ m, it may act as a factor of increasing the manufacturing cost without any further effect increase, and thus is not economical.
  • the upper and lower conductive coating layers 130 and 140 respectively include a resin layer and a conductive filler impregnated in the resin layer.
  • the resin layer serves to improve the mechanical strength.
  • the resin layer is formed of any one selected from a thermosetting resin including a phenol resin, an epoxy resin, an amino resin, a urea resin, a melamine resin, an unsaturated polyester resin, a polyurethane resin, and a polyimide resin.
  • the conductive filler is added and dispersed in the resin layer to improve the surface electrical conductivity of the x-axis and the y-axis.
  • the conductive filler is carbon nanotube, graphite powder, chopped carbon fiber, carbon black, carbon powder, graphite nanoplate ) And graphene may include one or more selected from.
  • the conductive filler is added to 15 to 25% by weight of the total weight based on the solid content. If the content of the conductive filler is less than 15% by weight, it may be difficult to secure the surface electrical conductivity. On the contrary, when the content of the conductive filler exceeds 25% by weight, coating failure may be caused by clogging of the nozzle.
  • the composite separator 110 may be formed.
  • the conductive filler is concentrated in large amounts only on the surface of the carbon fiber woven fabric 110 used as the core substrate of the core, and the vertical electrical conductivity in the z-axis direction is not good because it does not penetrate into the interior of the carbon fiber woven fabric 110. There is.
  • the composite separator according to the embodiment of the present invention described above first fills the conductive powder in a powder state inside the carbon fiber woven fabric, and then forms upper and lower conductive coating layers on both sides of the carbon fiber woven fabric filled with the conductive powder.
  • By forming it is possible to improve the vertical electrical conductivity in the z-axis direction along with the surface electrical conductivity in the x-axis and y-axis directions.
  • the composite separator according to the embodiment of the present invention can secure the surface electrical conductivity in the x-axis and y-axis directions by the upper and lower conductive coating layers formed on both sides of the carbon fiber woven fabric, and the carbon fiber woven fabric
  • the conductive powder filled in the structure has a structure for organically connecting between the carbon fiber woven fabrics, vertical electrical properties in the z-axis direction may be improved, thereby improving contact resistance.
  • the composite separator according to the embodiment of the present invention has a surface electrical conductivity: 100 ⁇ 200S / cm, contact resistance: 10mPa / cm2 or less and flexural strength: 80MPa or less.
  • FIG 3 is a process flow chart showing a method for manufacturing a composite separator according to an embodiment of the present invention
  • Figures 4 to 6 is a cross-sectional view showing a method for manufacturing a composite separator according to an embodiment of the present invention.
  • the composite separator according to an embodiment of the present invention manufacturing method includes a conductive powder filling step (S110), the upper and lower conductive coating layer forming step (S120) and hot press step (S130).
  • the conductive powder 120 is filled into the carbon fiber woven fabric 110.
  • Carbon fiber woven fabric 110 may be at least one stacked vertically.
  • the carbon fiber woven fabric 110 may be manufactured by weaving fiber bundles of 1,000 to 70,000 strands into weft and warp yarns, respectively. Accordingly, the carbon fiber woven fabric 110 may include the weft carbon fiber 112 disposed in the weft direction and the inclined carbon fiber 114 disposed in the inclined direction.
  • the fiber bundles of the carbon fiber woven fabric 110 has a circular or oval cross-sectional structure. And, the fiber bundles of the carbon fiber woven fabric 110 may have an average spacing of 1.5 ⁇ 2.0mm.
  • the conductive powder 120 is filled in the interior of the carbon fiber woven fabric 110 by a coating method to improve the vertical electrical conductivity of the z-axis.
  • the conductive powder 120 is carbon nanotube, graphite powder, chopped carbon fiber, carbon black, carbon powder, graphite nanoplatelet. It may include one or more selected from (graphite nanoplate) and graphene (graphene).
  • the conductive powder 120 may be directly filled by the powder coating method inside the carbon fiber woven fabric 110.
  • the conductive powder 120 is applied to both surfaces of the carbon fiber woven fabric 110 by air spraying the dispersion dispersed in an organic solvent and an epoxy liquid resin having a viscosity of 100cp or less, and then dried to volatilize the organic solvent. It may be coated in a manner.
  • organic solvent volatile ethanol, butanol, ethyl acetate, octanol, ethoxy ethanol pentanol, methoxy ethanol, ethylene glycol, acetone, tetrahydrofuran, dimethylformamide, dimethylamine, dichloromethane And one or more of diethyl ether may be used.
  • the upper and lower conductive coating layers 130 and 140 are formed on the upper and lower surfaces of the carbon fiber woven fabric 110 filled with the conductive powder 120. ).
  • the upper and lower conductive coating layers 130 and 140 respectively include a resin layer and a conductive filler impregnated in the resin layer.
  • the resin layer serves to improve the mechanical strength.
  • the resin layer is formed of any one selected from a thermosetting resin including a phenol resin, an epoxy resin, an amino resin, a urea resin, a melamine resin, an unsaturated polyester resin, a polyurethane resin, and a polyimide resin.
  • the conductive filler is added and dispersed in the resin layer to improve the surface electrical conductivity of the x-axis and the y-axis.
  • the conductive filler is carbon nanotube, graphite powder, chopped carbon fiber, carbon black, carbon powder, graphite nanoplate ) And graphene may include one or more selected from.
  • the conductive filler is added to 15 to 25% by weight of the total weight based on the solid content. If the content of the conductive filler is less than 15% by weight, it may be difficult to secure the surface electrical conductivity. On the contrary, when the content of the conductive filler exceeds 25% by weight, coating failure may be caused by clogging of the nozzle.
  • the upper and lower conductive coating layers 130 and 140 are formed by any one or more of knife coating, spray coating, dip coating and bar coating methods. Can be.
  • the thickness of the upper and lower conductive coating layers 130 and 140 may be adjusted by adjusting the spray time, dip coating time, knife height or bar height.
  • the carbon fiber woven fabric 110 and the upper and lower conductive coating layers (130, 140) by pressing and curing with a hot press to the composite separation plate 100 To obtain.
  • the hot press is preferably carried out for 10 to 60 minutes at 130 ⁇ 200 °C under a pressure condition of 10 ⁇ 30MPa.
  • the hot press temperature is less than 130 ° C. or the hot press time is less than 10 minutes, there is a high possibility that sufficient curing will not occur.
  • the hot press temperature exceeds 200 ° C. or the hot press time exceeds 60 minutes, it is not economical because it may act as a factor of increasing the manufacturing cost without any further effect increase.
  • the hot press pressure when the hot press pressure is less than 10MPa, the interfacial adhesion between the carbon fiber woven fabric 110 and the upper and lower conductive coating layers 130 and 140 may not be sufficient, thereby causing peeling. On the contrary, when the hot press pressure exceeds 30 MPa, damage to the carbon fiber woven fabric 110 and the upper and lower conductive coating layers 130 and 140 may occur due to excessive pressure.
  • the thickness of the carbon fiber woven fabric 110 and the upper and lower conductive coating layers (130, 140) is reduced by compression.
  • the carbon fiber woven fabric 110 has a thickness of 200 ⁇ 400 ⁇ m
  • each of the upper and lower conductive coating layers (130, 140) may have a thickness of 5 ⁇ 100 ⁇ m.
  • Composite plate prepared by the above process (S110 ⁇ S130) is first filled with the conductive powder in the powder state inside the carbon fiber woven fabric, and then the upper and lower conductive coating layers on both sides of the carbon fiber woven fabric filled with the conductive powder By forming, it is possible to improve the vertical electrical conductivity in the z-axis direction along with the surface electrical conductivity in the x-axis and y-axis directions.
  • the composite separator prepared by the method according to the embodiment of the present invention can secure the surface electrical conductivity in the x-axis and y-axis directions by the upper and lower conductive coating layers formed on both sides of the carbon fiber woven fabric.
  • the conductive powder filled inside the carbon fiber woven fabric has a structure for organically connecting between the carbon fiber woven fabrics, vertical electrical characteristics in the z-axis direction may be improved, thereby improving contact resistance.
  • the composite separator prepared by the method according to the embodiment of the present invention has a surface electrical conductivity: 100 ⁇ 200S / cm, contact resistance: 10mPa / cm2 or less and bending strength: 80MPa or less.
  • a carbon fiber woven fabric having an average thickness of 250 ⁇ m was immersed in a solution in which 10 wt% of epoxy resin was mixed to bind GNP to the surface of the carbon fiber woven fabric. After sonication for 15 minutes and dried at 60 ° C. for 1 hour, graphite nanoplates (GNP) were filled into the inside of the carbon fiber woven fabric.
  • CNT carbon nanotubes
  • GNT graphite nanoplatelets
  • a composite plate of 250 ⁇ m in thickness was prepared by pressing and curing the carbon nanofiber woven fabric containing graphite nanoplates (GNP) and the upper and lower conductive coating layers by hot pressing for 30 minutes under a pressure condition of 150 ° C. and 20 MPa. .
  • GNP graphite nanoplates
  • a composite separator was manufactured in the same manner as in Example 1, except that the carbon fiber woven fabric was immersed in a solution in which 5 wt% of graphite nanoplatelets (GNP) and 10 wt% of epoxy resin were dispersed and mixed in acetone.
  • GNP graphite nanoplatelets
  • a composite separator was prepared in the same manner as in Example 1, except that the carbon fiber woven fabric was immersed in a solution in which 3 wt% of graphite nanoplatelets (GNP) and 15 wt% of epoxy resin were dispersed and mixed in acetone.
  • GNP graphite nanoplatelets
  • Example 1 except that the carbon fiber woven fabric was immersed in a solution of 3% by weight of graphite nanoplatelets (GNP) and 10% by weight of epoxy resin in acetone, and subjected to ultrasonic vibration for 30 minutes and dried at 60 ° C for 1 hour. In the same manner, a composite separator was prepared.
  • GNP graphite nanoplatelets
  • Example 1 except that the carbon fiber woven fabric was immersed in a solution of 3% by weight of graphite nanoplatelets (GNP) and 10% by weight of epoxy resin in acetone, and subjected to ultrasonic vibration for 15 minutes and dried at 60 ° C. for 2 hours. In the same manner, a composite separator was prepared.
  • GNP graphite nanoplatelets
  • Top and bottom conductive coating layers were formed by coating a dispersion of 15 parts by weight of carbon nanotubes (CNT) added to 100 parts by weight of epoxy resin on the top and bottom of the carbon fiber woven fabric with a thickness of 150 ⁇ m by knife coating. .
  • CNT carbon nanotubes
  • the carbon fiber woven fabric and the upper and lower conductive coating layers were pressed and cured in a hot press for 30 minutes under pressure conditions of 160 ° C. and 20 MPa to prepare a composite separator.
  • a composite separator was prepared in the same manner as in Example 1, except that the carbon fiber woven fabric was immersed in a solution in which 10 wt% of graphite nanoplatelets (GNP) and 10 wt% of epoxy resin were dispersed and mixed in acetone.
  • GNP graphite nanoplatelets
  • a composite separator was prepared in the same manner as in Example 1, except that the carbon fiber woven fabric was immersed in a solution in which 3 wt% of graphite nanoplatelets (GNP) and 20 wt% of epoxy resin were dispersed and mixed in acetone.
  • GNP graphite nanoplatelets
  • Example 1 except that the carbon fiber woven fabric was immersed in a solution of 3% by weight of graphite nanoplatelet (GNP) and 10% by weight of epoxy resin in acetone, and subjected to ultrasonic vibration for 5 minutes and dried at 60 ° C for 1 hour. In the same manner, a composite separator was prepared.
  • GNP graphite nanoplatelet
  • Example 1 except that the carbon fiber woven fabric was immersed in a solution in which 3% by weight of graphite nanoplatelets (GNP) and 10% by weight of epoxy resin were dispersed and mixed with acetone, subjected to sonication for 15 minutes, and dried at 60 ° C for 30 minutes. In the same manner, a composite separator was prepared.
  • GNP graphite nanoplatelets
  • Table 1 shows the physical property evaluation results for the composite separators prepared according to Examples 1 to 5 and Comparative Examples 1 to 5.
  • Measuring method After laminating
  • Flexural strength was measured according to ASTM D790-10. At this time, the size of the specimen was used to produce a width of 1.27cm, length 12.7cm.
  • Comparative Example 1 which is not filled with graphite nanoplates (GNP)
  • GNP graphite nanoplates

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

Abstract

L'invention concerne : une plaque de séparation composite capable d'améliorer la conductivité électrique à la fois de la direction de la surface et de l'épaisseur de cette dernière ; et son procédé de production. La plaque de séparation composite selon la présente invention comprend : un tissu en fibre de carbone ; une poudre conductrice chargée dans le tissu en fibre de carbone ; et des couches de revêtement conductrices supérieure et inférieure disposées respectivement sur les surfaces supérieure et inférieure du tissu en fibre de carbone et liées au tissu en fibre de carbone.
PCT/KR2016/014111 2016-04-21 2016-12-02 Plaque de séparation composite et son procédé de production WO2017183791A1 (fr)

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JP2018554550A JP6722770B2 (ja) 2016-04-21 2016-12-02 複合材分離板

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KR10-2016-0048973 2016-04-21
KR1020160048973A KR101926457B1 (ko) 2016-04-21 2016-04-21 복합재 분리판 및 그 제조 방법

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KR100797827B1 (ko) * 2006-09-19 2008-01-24 재단법인 포항산업과학연구원 탄소섬유-에폭시 복합재에의 코팅방법
KR20110130640A (ko) * 2010-05-28 2011-12-06 주식회사 에이엔씨아이 연료전지 분리판의 제조용 도금된 고전도성 탄소섬유와 고분자 수지 복합재
KR20130128493A (ko) * 2012-05-16 2013-11-27 한국과학기술원 연료전지용 탄소섬유 직물 분리판 및 그 제조 방법
KR20160033857A (ko) * 2014-09-18 2016-03-29 (주)엘지하우시스 연료전지용 분리판 및 그의 제조방법

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