KR100812269B1 - Method for producing composite material for fuel cell separator - Google Patents

Method for producing composite material for fuel cell separator Download PDF

Info

Publication number
KR100812269B1
KR100812269B1 KR1020060115941A KR20060115941A KR100812269B1 KR 100812269 B1 KR100812269 B1 KR 100812269B1 KR 1020060115941 A KR1020060115941 A KR 1020060115941A KR 20060115941 A KR20060115941 A KR 20060115941A KR 100812269 B1 KR100812269 B1 KR 100812269B1
Authority
KR
South Korea
Prior art keywords
fuel cell
separator
cell separator
thermosetting resin
graphite powder
Prior art date
Application number
KR1020060115941A
Other languages
Korean (ko)
Inventor
홍종철
김정헌
정영필
Original Assignee
한국타이어 주식회사
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 한국타이어 주식회사 filed Critical 한국타이어 주식회사
Priority to KR1020060115941A priority Critical patent/KR100812269B1/en
Application granted granted Critical
Publication of KR100812269B1 publication Critical patent/KR100812269B1/en

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
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0204—Non-porous and characterised by the material
    • H01M8/0213—Gas-impermeable carbon-containing materials
    • 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
    • H01M8/0221—Organic resins; Organic polymers
    • 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
    • H01M8/0226—Composites in the form of mixtures
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • 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)

Abstract

A method for preparing a material for a fuel cell separator, a fuel cell separator prepared by using the material, and a fuel cell containing the separator are provided to improve electrical conductivity and to enhance the uniformity of physical properties. A method for preparing a material for a fuel cell separator comprises the steps of dissolving a phenol resin, an unsaturated polyester resin, a UPE or an epoxy resin as a thermosetting resin acting as a binder, an amine-based or acid anhydride-based curing agent and a curing accelerator such as triphenylphosphine or silane in methanol, ethanol or acetone as an organic solvent; dispersing a graphite powder in the obtained solution; drying it; and pulverizing the dried one, wherein 0.1-10 wt% of carbon black is mixed with the organic solvent before the graphite powder is added to allow the thermosetting resin to act as a dispersant. The drying is carried out at 40-80 deg.C in vacuum for 0.5-8 hours.

Description

연료전지 분리판용 성형 소재의 제조방법{Method for producing composite material for fuel cell separator}Method for producing molding material for fuel cell separator {Method for producing composite material for fuel cell separator}

도 1은 본 발명의 방법으로 제조한 성형소재를 적용한 분리판(실시예 1), 카본블랙을 전혀 사용하지 않고 성형한 분리판(비교예 1), 기존의 방식으로 제조한 분리판(비교예 2)의 전기전도도를 측정한 결과를 나타낸 그래프이다. 1 is a separator (Example 1) to which a molding material manufactured by the method of the present invention is applied (Example 1), a separator plate formed without using carbon black at all (Comparative Example 1), a separator prepared in a conventional manner (Comparative Example This graph shows the result of measuring the electrical conductivity of 2).

본 발명은 연료전지 분리판용 성형소재의 제조방법에 관한 것이다. 더욱 상세하게는 전기 전도도 등의 물성 향상을 목적으로 첨가하는 카본블랙의 분산도를 실질적으로 향상시켜 물성 균질도를 높일 수 있는 연료전지 분리판용 성형소재를 제조하는 방법에 관한 것이다. The present invention relates to a method for producing a molded material for a fuel cell separator. More specifically, the present invention relates to a method of manufacturing a molding material for a fuel cell separator that can substantially improve the dispersion of carbon black added for the purpose of improving physical properties such as electrical conductivity, thereby increasing the homogeneity of physical properties.

연료전지는 수소와 산소의 전기화학적 반응으로 전기를 생산하는 일종의 발전 시스템이다. 연료전지 시스템에서 실제로 전기를 생산하는 핵심 부품인 스택은 막전해질조립체(membrane electrode assembly)와 분리판이라 불리는 양극판(bipolar plate)로 이루어진다. 이 중 분리판은 MEA(Membrane Electrode Assembly)에 연료인 수소와 산소를 공급하고, 촉매반응에 의해 발생된 전자를 이동 시키는 통로 역할을 하며, 동시에 각 단위전지 간 절연이 유지될 수 있도록 분리시키는 역할을 수행하는 핵심 부품이다. Fuel cells are a type of power generation system that produces electricity through the electrochemical reaction of hydrogen and oxygen. In a fuel cell system, the stack, the core component that actually produces electricity, consists of a membrane electrode assembly and a bipolar plate called a separator. The separator serves to supply hydrogen and oxygen as fuels to the MEA (Membrane Electrode Assembly), to move electrons generated by the catalytic reaction, and to separate the unit cells so that the insulation can be maintained. It is a key part to perform.

연료전지 분리판 요구 특성에는 굴곡강도, 인장강도, 가스투과성, 전기 전도도와 같은 항목들이 있다.Fuel cell separator requirements include such factors as flexural strength, tensile strength, gas permeability, and electrical conductivity.

분리판의 소재로 금속 소재가 사용되어졌으나 부식으로 인한 문제 때문에 흑연소재의 분리판이 연구되고 있다. 흑연은 우수한 내부식성과 내화학성을 가지고 있지만, 흑연의 경우 원하는 형상으로 가공이 어려워 가공비가 높아 제조 비용이 높아지는 단점이 있다. 따라서 흑연의 특성을 유지하면서 원하는 형상으로 성형할 수 있는 탄소복합재 분리판이 등장하게 되었다. 탄소복합재 분리판은 흑연 분말에 레진을 혼합하여 성형하게 되는데 일반적으로 열경화성 레진을 사용할 경우 압축 성형 방식으로 분리판을 제조한다. Although a metal material is used as a material of the separator, a separator of graphite material is being studied because of problems due to corrosion. Graphite has excellent corrosion resistance and chemical resistance, but graphite has a disadvantage in that it is difficult to process to a desired shape, and thus the manufacturing cost is high due to high processing cost. Accordingly, a carbon composite separator that can be formed into a desired shape while maintaining the properties of graphite has emerged. The carbon composite separator is formed by mixing resin with graphite powder. Generally, when using a thermosetting resin, the separator is manufactured by compression molding.

열경화성 레진과 흑연분말을 혼합하는 방식으로는 믹서(mixer)를 사용하여 레진과 흑연분말을 물리적으로 혼합하는 건식 방식과 레진을 용제에 녹인 후 흑연분말을 용제에 분산시킨 후 건조하여 성형하는 습식 방식이 있다. 습식 방식은 레진을 용제에 녹인 후 그 용액을 이용하여 흑연 분말과 혼합하는 방식으로 건식 방식에 비해 원료간의 분산도가 높은 장점이 있다. As a method of mixing thermosetting resin and graphite powder, a dry method of physically mixing resin and graphite powder using a mixer, and a wet method of dissolving the resin in a solvent, dispersing the graphite powder in the solvent, and then drying and molding the powder. There is this. The wet method is a method in which the resin is dissolved in a solvent and then mixed with graphite powder using the solution, which has a higher dispersion of raw materials than the dry method.

습식 방식이 흑연과 레진과의 분산도가 높은 장점이 있지만 카본 블랙과 같은 밀도가 낮은 첨가제를 함께 혼합하게 되면 첨가제의 분산도가 떨어져 첨가제의 효과가 나타나지 않는 단점이 있다. The wet method has the advantage of high dispersion of graphite and resin, but when the low density additives such as carbon black are mixed together, there is a disadvantage in that the dispersion of the additive is reduced and the effect of the additive does not appear.

이에 본 발명은 연료전지 분리판의 습식 제조 공정에서 물성을 개선할 수 있는 첨가제로서 카본블랙을 혼합할 때 분산도를 높혀 성형 분리판에 대한 첨가제의 효과를 극대화할 수 있음과 동시에 물성 균질도가 높은 성형소재를 제조하는 방법을 제공하는데 그 목적이 있는 것이다.Therefore, the present invention can maximize the effect of the additive on the molded separator by increasing the dispersion degree when mixing the carbon black as an additive that can improve the physical properties in the wet manufacturing process of the fuel cell separator and at the same time the physical homogeneity The purpose is to provide a method for producing a high molded material.

본 발명의 다른 목적은 상기 방법에 의해 성형된 성형소재로부터 제조된 분리판과 해당 분리판을 적용한 연료전지를 제공하는데 그 목적이 있다. Another object of the present invention is to provide a separator produced from the molded material molded by the above method and a fuel cell to which the separator is applied.

이와 같은 목적을 달성하기 위한 본 발명의 연료전지 분리판용 복합소재의 제조방법은, 결합제로 작용하는 열경화성 레진으로서 페놀레진, 불포화폴리에스터 레진, UPE 또는 에폭시 레진을 아민계 또는 산무수물계 경화제, 트리페닐포스핀 또는 실란과 같은 경화촉진제를 유기용제로서 메탄올, 에탄올 또는 아세톤에 용해시키고, 상기 열경화성 레진이 분산제로도 사용될 수 있도록 미리 카본블랙을 혼합하고 이어서 흑연 분말을 첨가한 후 건조 및 분쇄시켜서 분말 소재로 제조하는 것을 특징으로 한다.The method for producing a composite material for a fuel cell separator of the present invention for achieving the above object is a thermosetting resin acting as a binder, a phenol resin, an unsaturated polyester resin, UPE or an epoxy resin is an amine or acid anhydride-based curing agent, tri A curing accelerator such as phenylphosphine or silane is dissolved in methanol, ethanol or acetone as an organic solvent, and carbon black is mixed in advance so that the thermosetting resin can also be used as a dispersant, and then graphite powder is added and then dried and pulverized. It is characterized by the manufacture of the material.

이와 같은 본 발명을 더욱 상세히 설명하면 다음과 같다. 하기에서 본 발명을 설명함에 있어 관련된 공지 기능 또는 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략할 것이다. 그리고 후술되는 용어들은 본 발명에서의 기능을 고려하여 정의된 용어들로서, 이는 사용자, 운용자의 의도 또는 관례 등에 따라 달라질 수 있으며, 이에 따라 각 용어의 의미는 본 명세서 전반에 걸친 내용을 토대로 해석되어야 할 것이 다. Referring to the present invention in more detail as follows. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intention or custom of a user or an operator, and thus the meaning of each term should be interpreted based on the contents throughout the present specification. will be.

본 발명에 따른 연료전지 분리판용 성형소재의 습식 제조 공정에서 기본적인 구성물은 열경화성 레진, 경화제, 경화촉진제, 흑연 분말, 첨가제로서의 카본블랙이며, 먼저 고분자 물질의 보다 균질한 혼합을 위하여 열경화성 레진, 경화제, 경화촉진제를 유기 용제에 먼저 용해시킨다.In the wet manufacturing process of the fuel cell separator molding material according to the present invention, the basic constituents are thermosetting resin, curing agent, curing accelerator, graphite powder, and carbon black as additives. The curing accelerator is first dissolved in the organic solvent.

상기 열경화성 레진은 결합제로 사용되는 동시에 후술하겠지만 첨가제인 카본블랙을 위한 분산제의 역할도 수행한다. 이와 같은 열경화성 레진으로는 페놀레진, 불포화폴리에스터 레진, 불포화 폴리 에스테르수지(UPE) 또는 에폭시 레진 등이 사용될 수 있다. 열경화성 레진은 분리판의 질량비로 1 내지 30중량%를 첨가한다.The thermosetting resin is used as a binder and at the same time serves as a dispersant for the carbon black as an additive. As such thermosetting resin, phenol resin, unsaturated polyester resin, unsaturated polyester resin (UPE) or epoxy resin may be used. The thermosetting resin is added 1 to 30% by weight in the mass ratio of the separator.

상기 경화제로는 열경화성 레진 대비 질량비로 30 내지 85질량% 함량의 아민계 또는 산무수물계가 사용될 수 있다 As the curing agent, an amine or acid anhydride system having a content of 30 to 85% by mass in terms of mass ratio to the thermosetting resin may be used.

상기 경화촉진제로는 열경화성 레진 대비 질량비로 0.3 내지 6질량% 함량의 트리페닐포스핀(Triphenyphosphine : 이하 TPP라 칭함) 또는 실란(Silane) 등이 사용될 수 있다 The curing accelerator may be triphenylphosphine (Triphenyphosphine: referred to as TPP) or silane (Silane) in a content of 0.3 to 6% by mass relative to the thermosetting resin.

본 발명에서 상기 유기용제로는 메탄올, 에탄올 또는 아세톤을 사용할 수 있으며, 유기용제는 흑연 대비 질량비로 50 내지 200질량%를 첨가하여 사용한다. 상기한 바와 같이 열경화성 레진, 경화제, 경화촉진제를 유기용제에 먼저 녹인 후에 카본블랙만 질량비로 0.1 내지 10중량%를 미리 첨가하여 프리믹싱을 실시하는 것이 바람직하다. 카본블랙은 전기전도도를 개선시키기 위하여 첨가하는 것인데 이것은 밀도가 매우 낮아서 후술하는 흑연 분말과 같이 함께 넣어서 혼합할 경우 분 산이 전혀 이루어지지 않아 균질한 성형소재의 제조가 불가능할 뿐 아니라 균질한 성형소재 분리판 제조도 어렵게 만들게 된다. 또한 카본블랙의 함량이 질량비로 10% 이상이 되면 부피가 큰 카본블랙이 열경화성 레진과 흑연의 결합을 방해하여 분리판 전체의 강도가 낮아질 뿐만 아니라 분리판 성형 자체가 불가능하게 된다.Methanol, ethanol or acetone may be used as the organic solvent in the present invention, and the organic solvent may be used by adding 50 to 200 mass% in a mass ratio to graphite. As described above, it is preferable to dissolve the thermosetting resin, the curing agent, and the curing accelerator in the organic solvent first, and then premix by adding only 0.1 to 10% by weight of carbon black only by mass ratio. Carbon black is added to improve the electrical conductivity. It is very low in density, so when it is mixed together with graphite powder, which will be described later, it is not dispersed at all. Therefore, it is not possible to manufacture a homogeneous molding material, and homogeneous molding material separation plate. It also makes manufacturing difficult. In addition, when the carbon black content is 10% or more by mass ratio, the bulky carbon black interferes with the bonding of the thermosetting resin and graphite, thereby lowering the strength of the whole separator and making the separator itself impossible.

본 발명에 의하면, 상기한 바와 같이 카본블랙을 프리믹싱함으로써 생성된 슬러리는 분산제 역할도 동시에 수행하는 열경화성 레진에 의해 시간이 지나도 카본블랙의 분산도를 유지하게 된다.According to the present invention, as described above, the slurry produced by premixing the carbon black maintains the dispersion degree of the carbon black over time by the thermosetting resin which also serves as a dispersant.

상기한 바와 같이 프리믹싱된 슬러리에 흑연분말을 첨가하고 유기용제를 건조에 의해 증발시키고, 분쇄하게 되면 연료전지 분리판용 성형소재가 분말로 제조되게 된다. 즉, 상기에서 유기용제를 증발시키기 위한 건조 및 분쇄과정은 40 내지 80℃의 진공상태를 유지하는 건조 분쇄기를 사용하여 30분 내지 8시간 동안 혼합물을 건조 및 분쇄하면 된다. 성형소재에 유기 용제가 남아 있게 되면 분리판 성형시 발생하는 기체로 인하여 성형 불량이 발생하므로 유기용제의 증발 온도 보다 높지만 열경화성 레진의 경화 온도보다 낮은 온도 조건에서 건조를 실시해야 하며, 건조 과정에서 성형 소재가 서로 엉키는 것을 방지하기 위해서 분쇄 과정도 동시에 진행해야 한다.As described above, when the graphite powder is added to the premixed slurry, the organic solvent is evaporated by drying, and pulverized, the molding material for the fuel cell separator is made of powder. That is, the drying and pulverization process for evaporating the organic solvent may be performed by drying and pulverizing the mixture for 30 minutes to 8 hours using a dry pulverizer maintaining a vacuum of 40 to 80 ℃. If the organic solvent remains in the molding material, molding failure occurs due to the gas generated during the separation plate molding. Therefore, drying should be performed at a temperature higher than the evaporation temperature of the organic solvent but lower than the curing temperature of the thermosetting resin. In order to prevent the materials from tangling together, the grinding process must be carried out at the same time.

다음에서, 본 발명과 같이 전기전도성의 향상을 위한 첨가제로서 카본블랙을 사용하여 제조한 성형소재를 적용한 분리판(실시예 1)과 카본블랙을 전혀 사용하지 않은 종래의 분리판(비교예 1), 기존방식으로 카본블랙을 흑연분말과 함께 첨가하여 제조한 성형소재를 적용한 분리판(비교예 2)에 대한 물성 비교실험을 한 결 과는 다음과 같다. 각각의 비교예들도 본 발명의 경우와 같이 동일한 흑연분말과 레진을 사용하며, 압축성형 방식으로 분리판을 제조한다. 또한 고분자 물질과 흑연분말 혼합비도 본 발명의 실시예와 동일하게 하며, 성형소재를 사용한 압축성형 공정조건도 실시예와 동일하게 적용한다.Next, a separator (Example 1) to which a molding material manufactured using carbon black is applied as an additive for improving electrical conductivity, as in the present invention, and a conventional separator that does not use carbon black at all (Comparative Example 1). The results of a comparative experiment of the physical properties of the separator (Comparative Example 2) applying the molded material prepared by adding carbon black together with graphite powder by the conventional method are as follows. Each comparative example also uses the same graphite powder and resin as in the case of the present invention, to prepare a separator plate by compression molding. In addition, the mixing ratio of the polymer material and the graphite powder is the same as in the embodiment of the present invention, and the compression molding process conditions using the molding material are also applied in the same manner as in the embodiment.

도 1은 본 발명의 방법으로 제조한 성형소재를 적용한 분리판(실시예 1), 카본블랙을 전혀 사용하지 않고 성형한 분리판(비교예 1), 기존의 방식으로 제조한 분리판(비교예 2)의 전기전도도를 측정한 결과를 나타낸 그래프이다. 1 is a separator (Example 1) to which a molding material manufactured by the method of the present invention is applied (Example 1), a separator plate formed without using carbon black at all (Comparative Example 1), a separator prepared in a conventional manner (Comparative Example This graph shows the result of measuring the electrical conductivity of 2).

도 1에 의하면, 실시예 1은 전기전도도 값이 월등히 우수한 반면에 비교예 1과 비교예 2를 보면, 카본블랙을 첨가하지 않는 것과 기존의 방식대로 첨가한 것과 전기전도도 값에 별차이가 없다. 이것은 기존 방식으로는 카본블랙의 분산이 어렵기 때문이며, 본 발명에서 제시한 방법과 같이 첨가제의 분산도를 높혀주는 방식을 채택할 경우 제작된 분리판은 전기전도도 값이 상당히 우수하게 나타내게 된다. According to Figure 1, Example 1 has a very good electrical conductivity value, while Comparative Example 1 and Comparative Example 2, there is no difference between the addition of carbon black and the conventional conductivity and the conductivity value. This is because it is difficult to disperse the carbon black in the conventional method, the separation plate produced when the method of increasing the dispersion of additives, such as the method proposed in the present invention will exhibit a very good electrical conductivity value.

이상에서 본 발명의 바람직한 실시예에 한정하여 설명하였으나, 본 발명은 이에 한정되지 않고 다양한 변화와 변경 및 균등물을 사용할 수 있다. 따라서 본 발명은 상기 실시예를 적절히 변형하여 응용할 수 있고, 이러한 응용도 하기 특허청구범위에 기재된 기술적 사상을 바탕으로 하는 한 본 발명의 권리범위에 속하게 됨은 당연하다 할 것이다. Although the above has been described as being limited to the preferred embodiment of the present invention, the present invention is not limited thereto and various changes, modifications, and equivalents may be used. Therefore, the present invention can be applied by appropriately modifying the above embodiments, it will be obvious that such application also belongs to the scope of the present invention based on the technical idea described in the claims below.

본 발명의 연료전지 분리판용 성형소재의 제조방법은 기존의 습식 혼합 공정으로는 균일한 혼합이 불가능하였던 첨가제인 카본 블랙을 새로운 방법으로 첨가 함으로써 높은 전기전도도를 확보함과 동시에 제품 부위별 물성의 균질성을 극대화 할 수 있는 효과가 있다.The method of manufacturing a molding material for a fuel cell separator according to the present invention ensures high electrical conductivity and homogeneity of physical properties of each product by adding carbon black, an additive that was not possible to be uniformly mixed by a conventional wet mixing process. Has the effect of maximizing.

Claims (5)

결합제로 작용하는 열경화성 레진으로서 페놀레진, 불포화폴리에스터 레진, UPE 또는 에폭시 레진을 아민계 또는 산무수물계 경화제, 트리페닐포스핀 또는 실란과 같은 경화촉진제를 유기용제로서 메탄올, 에탄올 또는 아세톤에 용해시키고, 흑연분말을 분산시킨 후에 건조 및 분쇄하여서 연료전지 분리판용 성형소재를 제조하는 방법에 있어서, 상기 열경화성 레진이 분산제로도 사용될 수 있도록 상기 열경화성 레진, 경화제 및 경화촉진제가 용해된 유기용제에 카본블랙을 질량비로 0.1 내지 10중량%를 미리 혼합하고 이어서 흑연 분말을 첨가한 후 40 내지 80℃의 진공상태에서 30분 내지 8시간 동안 건조분쇄기에서 건조 및 분쇄시켜서 분말 소재로 제조하는 것을 특징으로 하는 연료전지 분리판용 성형소재의 제조방법.Thermosetting resins acting as binders are phenol resins, unsaturated polyester resins, UPEs or epoxy resins. In the method of manufacturing a molded material for a fuel cell separator by dispersing the graphite powder, drying and pulverizing, carbon black in an organic solvent in which the thermosetting resin, a curing agent and a curing accelerator are dissolved so that the thermosetting resin can also be used as a dispersant. Is mixed with 0.1 to 10% by weight in a mass ratio, and then graphite powder is added, and then dried and pulverized in a dry mill for 30 minutes to 8 hours in a vacuum state of 40 to 80 ℃ to produce a powder material Method for producing a molding material for a battery separator. 삭제delete 삭제delete 상기 청구항 1에 기재한 방법에 따라 제조된 성형소재를 사용하여 제조한 것을 특징으로 하는 연료전지 분리판.A fuel cell separator comprising a molding material manufactured according to the method of claim 1. 상기 청구항 1에 기재한 방법에 따라 제조된 성형소재를 사용하여 성형한 분리판을 적용한 연료전지.A fuel cell to which a separator plate molded using the molding material manufactured according to the method of claim 1 is applied.
KR1020060115941A 2006-11-22 2006-11-22 Method for producing composite material for fuel cell separator KR100812269B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060115941A KR100812269B1 (en) 2006-11-22 2006-11-22 Method for producing composite material for fuel cell separator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060115941A KR100812269B1 (en) 2006-11-22 2006-11-22 Method for producing composite material for fuel cell separator

Publications (1)

Publication Number Publication Date
KR100812269B1 true KR100812269B1 (en) 2008-03-13

Family

ID=39398363

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060115941A KR100812269B1 (en) 2006-11-22 2006-11-22 Method for producing composite material for fuel cell separator

Country Status (1)

Country Link
KR (1) KR100812269B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101011014B1 (en) * 2008-06-13 2011-01-26 한국타이어 주식회사 Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell
KR101262665B1 (en) 2011-04-13 2013-05-15 전자부품연구원 A carbon-graphite complexed bipolar plate and a redox flow secondary cell having the same carbon-graphite complexed bipolar plate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001325967A (en) 2000-05-15 2001-11-22 Nisshinbo Ind Inc Manufacturing method of fuel cell separator, fuel cell separator and solid polymer fuel cell
KR20040101706A (en) * 2003-05-26 2004-12-03 한국에너지기술연구원 Mixed powder material for separators of fuel cell
KR20050120516A (en) * 2004-06-19 2005-12-22 한국타이어 주식회사 Molding material for fuel cell separator, manufacturing method thereof, fuel cell separator and fuel cell
US20060204819A1 (en) 2005-03-11 2006-09-14 Atsushi Murakami Conductive epoxy resin composition and separator for fuel cell

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001325967A (en) 2000-05-15 2001-11-22 Nisshinbo Ind Inc Manufacturing method of fuel cell separator, fuel cell separator and solid polymer fuel cell
KR20040101706A (en) * 2003-05-26 2004-12-03 한국에너지기술연구원 Mixed powder material for separators of fuel cell
KR20050120516A (en) * 2004-06-19 2005-12-22 한국타이어 주식회사 Molding material for fuel cell separator, manufacturing method thereof, fuel cell separator and fuel cell
US20060204819A1 (en) 2005-03-11 2006-09-14 Atsushi Murakami Conductive epoxy resin composition and separator for fuel cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101011014B1 (en) * 2008-06-13 2011-01-26 한국타이어 주식회사 Process for preparing separator material for a fuel cell having high electrical conductivity, separator for a fuel cell and feul cell
KR101262665B1 (en) 2011-04-13 2013-05-15 전자부품연구원 A carbon-graphite complexed bipolar plate and a redox flow secondary cell having the same carbon-graphite complexed bipolar plate

Similar Documents

Publication Publication Date Title
CA2510209C (en) Molding material for fuel cell separator and method for preparing the same
Chang et al. Polybenzimidazole membranes modified with polyelectrolyte-functionalized multiwalled carbon nanotubes for proton exchange membrane fuel cells
Hung et al. Effect of sulfonated carbon nanofiber-supported Pt on performance of Nafion®-based self-humidifying composite membrane for proton exchange membrane fuel cell
US20200335801A1 (en) Bipolar plate of proton exchange membrane fuel cell and method of preparing same
CN110061258B (en) Fuel cell polar plate and preparation method thereof and fuel cell
Suherman et al. Properties of graphite/epoxy composites: the in-plane conductivity, tensile strength and Shore hardness.
JP5600158B2 (en) Separation plate for fuel cell and fuel cell including the same
CN102838777B (en) Recovery method of sulfonated polyether ether ketone (SPEEK) / polyaniline (PANI) / propylene glycol monomethyl acetate (PMA) composite proton exchange membrane
Liao et al. One-step functionalization of carbon nanotubes by free-radical modification for the preparation of nanocomposite bipolar plates in polymer electrolyte membrane fuel cells
KR101425562B1 (en) Manufacturing method of separator for fuel cell and separator for fuel cell manufactured using the same
KR100812269B1 (en) Method for producing composite material for fuel cell separator
KR100752072B1 (en) Organic-inorganic composite polymer electrolyte membrane for fuel cells and its preparation method
KR20100020050A (en) Mixture for manufacturing self-healing fuel cell bipolar plate and fuel cell bipolar plate
US20040033413A1 (en) Polymer electrolyte membrane fuel cell
KR100808332B1 (en) Method of preparing separator for fuel cell and separator for fuel cell prepared by the same
KR100834056B1 (en) Carbon composite separator having high electrical conductivity for a fuel cell and method for producing the same
Hui et al. Characteristics and preparation of polymer/graphite composite bipolar plate for PEM fuel cells
KR101399352B1 (en) Separator for fuel cell, method for manufacturing the same and fuel cell comprising the same
KR102340427B1 (en) Composite for fuel cell bipolar plate and its preparation method
JP2005071886A (en) Manufacturing method for separator-molding resin composition for fuel cell
Santana-Villamar et al. Latest Advancements in Carbon Nanotube (CNT) Applications for Enhancing the Mechanical and Electrical Properties in PEMFC Components
KR101227900B1 (en) Novel compositie material having enhanced mechanical and electrical property
JP2005071888A (en) Manufacturing method for separator-molding resin composition for fuel cell
Mulijani Performance of polymer nano composite membrane electrode assembly using Alginate as a dopant in polymer electrolyte membrane fuel cell
KR20120044671A (en) Conductive composite material comprising epoxy resin and graphite

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
G170 Publication of correction
FPAY Annual fee payment

Payment date: 20110302

Year of fee payment: 6

FPAY Annual fee payment

Payment date: 20140228

Year of fee payment: 9

FPAY Annual fee payment

Payment date: 20170302

Year of fee payment: 12

FPAY Annual fee payment

Payment date: 20191204

Year of fee payment: 15