JPS5812267A - Gas separator for fuel cell - Google Patents
Gas separator for fuel cellInfo
- Publication number
- JPS5812267A JPS5812267A JP56111609A JP11160981A JPS5812267A JP S5812267 A JPS5812267 A JP S5812267A JP 56111609 A JP56111609 A JP 56111609A JP 11160981 A JP11160981 A JP 11160981A JP S5812267 A JPS5812267 A JP S5812267A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- carbon paper
- side edges
- gas separator
- substrate
- 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
Links
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
- H01M8/0223—Composites
- H01M8/0226—Composites in the form of mixtures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/96—Carbon-based electrodes
-
- 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Composite Materials (AREA)
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は燃料電池のガス分離板の改良に関する。[Detailed description of the invention] The present invention relates to improvements in gas separation plates for fuel cells.
酸性電解液を使用するマトリックス型燃料電池)
のカフボン製ガス分離板は、陰極(水素極)及び陽極(
空気極)の背面に夫々の反応ガスを供給する機能及び陰
陽ガス電極とiトリックスよりなる単位セル間の接続導
体としての機能を持っている。Cafbon gas separation plates for matrix fuel cells (which use acidic electrolytes) are used to separate the cathode (hydrogen electrode) and anode (matrix fuel cells).
It has the function of supplying each reaction gas to the back side of the air electrode (air electrode) and the function of connecting conductor between the unit cell consisting of the negative and positive gas electrodes and i-trix.
又前者の機能のため水素と空気を完全に分離するために
無孔質であることが必要である。Furthermore, for the former function, it is necessary to be non-porous in order to completely separate hydrogen and air.
このようなガス分離板は、グラファイト粉末にフェノー
ル樹脂などの結着剤粉末を混合し、加圧加熱成型後更に
上記結着剤を炭化するために高温度(1000℃程度)
で長時間熱処理して作成される。Such gas separation plates are made by mixing graphite powder with binder powder such as phenol resin, and after pressurizing and heating molding, the plate is heated at high temperature (approximately 1000°C) to carbonize the binder.
It is created through long-term heat treatment.
従来のガス分離板(イ)は、第1図の平面図及び第2図
(a)(kl)の互に直交する方向の断面図に示される
ように、その表裏両面に互に交輪する方向に多数の水素
ガス供給溝(ロ)及び空気供給溝(ハ)を形成している
が、金型の作成が複雑で製造1難しい面があ、フ、分離
板(イ)の面積が大きくなるとグラファイト粉末の充填
ムラが生じて厚みが不均一となり、多数の溝(ロ)(ハ
)に基因して分離板の変形や特にそりなどが発生し、妻
止りが悪くなるという問題があった。As shown in the plan view of FIG. 1 and the cross-sectional view of FIG. A large number of hydrogen gas supply grooves (B) and air supply grooves (C) are formed in the direction, but the manufacturing process is difficult due to the complexity of mold creation. When this happens, the filling of graphite powder becomes uneven, resulting in uneven thickness, and the large number of grooves (B) and (C) causes deformation of the separation plate, and especially warpage, resulting in poor end-stopping. .
本発明はこのような不良品発生の原因となる多数のガス
供給溝の代りに1撥水処理を施したカーボンペーパーの
積重体により多孔性ガス通路を形成するものである、
以下本発明の実施例を図について説明する。The present invention forms porous gas passages using a stack of water-repellent treated carbon papers instead of the large number of gas supply grooves that cause such defective products. An example will be explained with reference to the figure.
本発明によるガス分離板(1)は、平担な表裏両面に互
に交蛤する方向に対向側縁[!l +!l及び1sl1
31を形成したカーボン製無孔質基板(4)と、撥水処
理を施したカーボンペーパー(6)の積重体を対向側縁
+2)f!1及び+3)fil関に嵌着してなる多孔質
ガス通路+so′1.+とより構成される。The gas separation plate (1) according to the present invention has opposite side edges [! l+! l and 1sl1
A stack of a non-porous carbon substrate (4) on which 31 is formed and a carbon paper (6) treated with water repellent is placed on the opposite side edge +2) f! 1 and +3) porous gas passage fitted into the fil barrier +so'1. It consists of +.
前記基板(4)は通常の方法で作成されるが、対向側縁
を除いて表裏両面は平担であり、従来のように多数の溝
がないので作成が簡単であると共に変 □形やそりを生
ずることが少い。The substrate (4) is made by a normal method, but both the front and back sides are flat except for the opposite side edges, and there are no many grooves as in the conventional case, so it is easy to make and does not have any shape or warpage. This rarely occurs.
ガス通路+111+71として使用するカーボンペーパ
ー圏は、ガス電極における触媒層の裏打カーボンペーパ
ー(防水層)と同様弗素樹脂ディスパージョンに浸漬し
て引上げ後弗素樹脂の結着温度で熱処理されるが、カー
ボンペーパーに対する弗素樹脂の含量は、電極防水層の
場合約40−程度であるに対し、本発明カーボンの場合
約5−程度で、カーボンペーパー(6)の導電性及び多
孔性を著しく損うことはない。The carbon paper area used as the gas passage +111+71 is immersed in a fluororesin dispersion, pulled up, and then heat-treated at the binding temperature of the fluororesin, similar to the carbon paper (waterproof layer) lining the catalyst layer in the gas electrode. The content of fluororesin in the electrode waterproof layer is about 40 -, while in the case of the carbon of the present invention it is about 5 -, which does not significantly impair the conductivity and porosity of the carbon paper (6). .
このカーボンペーパー(−)は厚みが約0.4 ws程
度であるから、基板(4)の対向側縁+21+31の高
さが約2swQ度とすれば、これを5枚積層して使用す
ればよい。This carbon paper (-) has a thickness of about 0.4 ws, so if the height of the opposite side edge +21+31 of the substrate (4) is about 2 swQ degrees, then 5 sheets of this can be stacked and used. .
第4図は本発明ガス分離板+11と単位セルを交互に積
層した電池堆の断面図を示し、これは第6図、の■−■
線で断面した場合である。FIG. 4 shows a cross-sectional view of a battery stack in which gas separation plates +11 of the present invention and unit cells are alternately stacked, and this is shown in FIG.
This is the case when the cross section is taken along a line.
単位セルは陰極(8)電解質マ) IJラックス9)及
び陽極−よシなり、陰極(8)Kはカーボンペーパーm
重体よりなる水素ガス通路(6)t−介して紙面方向か
ら水素ガスが供給され、陽極晴には同上の空気通路(7
)を介して紙面と直角方向から空気が供給され、これら
反応ガスがマトリックスillを介して反応し電気エネ
ルギーを発生する。The unit cell is the cathode (8) electrolyte (IJ Lux 9) and the anode (k), and the cathode (8) is carbon paper (m).
Hydrogen gas is supplied from the plane of the paper through the hydrogen gas passage (6) t-, which is made up of a heavy body, and the same air passage (7) is provided to the anode.
), air is supplied from a direction perpendicular to the plane of the paper, and these reaction gases react via the matrix ill to generate electrical energy.
反応ガスの供給について、本発明の多孔質ガス通路は従
来の溝方式に比し通気抵抗が大きいので、供給圧力を高
める必要があシ、例えば水素ガスの場合は通常の5〜5
倍、空気の場合は7〜10倍程度必要とする。Regarding the supply of reaction gas, since the porous gas passage of the present invention has greater ventilation resistance than the conventional groove method, it is necessary to increase the supply pressure. For example, in the case of hydrogen gas, it is necessary to increase the supply pressure to
In the case of air, it requires about 7 to 10 times.
本発明によるガス分離板は、多数のガス供給溝の代りに
撥水処理を施したカーボンペーパーの積重体により多孔
質ガス通路を形成するもので、この積重体をカーボン製
基板の平担な表裏両面に互に交鑓する方向に形成した対
向側縁間に嵌着するだけでよいので、製造が簡単で複雑
な金型を必要とせず特に多数の溝に基因する分離板の変
形やそりの発生がなくな抄、参上りを向上することがで
きる。In the gas separation plate according to the present invention, a porous gas passage is formed by a stack of water-repellent carbon paper instead of a large number of gas supply grooves. Since it only needs to be fitted between opposing edges formed on both sides in mutually intersecting directions, manufacturing is simple and does not require complicated molds, and is particularly effective against deformation and warping of the separation plate caused by a large number of grooves. This eliminates the occurrence and improves the extraction and delivery times.
又ガス通路を構成するカーボンペーパーは予メ撥水処理
が施されているので、電解液や生成水がたとえ漏出して
も通気性を損うことがなく、ガス供給の圧力を従来のガ
ス溝方式に比し高めることによって充分その機能を発揮
する。In addition, the carbon paper that makes up the gas passage has been pre-treated with a water-repellent treatment, so even if electrolyte or generated water leaks out, breathability will not be affected, and the gas supply pressure can be controlled by using the conventional gas groove. It fully demonstrates its function by increasing it compared to the method.
第1図は従来のガス分離板の平面図、第2図(a)(b
)は第1図の互に直交する方向で切断した断面図である
。第6図は本発明ガス分離板の分解斜面図、第4図は李
発明ガス分離板を備える電池堆の一部断面図である。
1・・・ガス分離板、2.2及び、3.6・・・対向側
縁、4一基板、5・・・カーボンペーパー、6.7・・
・ガス通路、8.10・・・陰陽ガス電極、9・・・マ
トリックス
第2図
(d+ 口 +b+
ロバ 11Figure 1 is a plan view of a conventional gas separation plate, Figures 2 (a) and (b)
) are cross-sectional views taken in directions perpendicular to each other in FIG. 1; FIG. 6 is an exploded perspective view of the gas separation plate of the present invention, and FIG. 4 is a partial sectional view of a battery stack equipped with the gas separation plate of Lee's invention. DESCRIPTION OF SYMBOLS 1... Gas separation plate, 2.2 and 3.6... Opposing side edge, 4-substrate, 5... Carbon paper, 6.7...
・Gas passage, 8.10...Yin-yang gas electrode, 9...Matrix Figure 2 (d+ mouth +b+
donkey 11
Claims (1)
成したカーボン製基板と、撥水処理を施したカーボンペ
ーパーの積重体を前記各対向側縁間に嵌着してなる多孔
質ガス通路とより構成され九ことを特徴とする燃料電池
のガス分離板。■ A porous structure made of a carbon substrate with opposite side edges formed on both the front and back sides in mutually perpendicular directions, and a stack of water-repellent carbon paper fitted between each of the opposite side edges. 9. A gas separation plate for a fuel cell, comprising: a gas passage;
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56111609A JPS5812267A (en) | 1981-07-16 | 1981-07-16 | Gas separator for fuel cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56111609A JPS5812267A (en) | 1981-07-16 | 1981-07-16 | Gas separator for fuel cell |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5812267A true JPS5812267A (en) | 1983-01-24 |
Family
ID=14565672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56111609A Pending JPS5812267A (en) | 1981-07-16 | 1981-07-16 | Gas separator for fuel cell |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5812267A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2587696A1 (en) * | 1985-09-25 | 1987-03-27 | Kureha Chemical Ind Co Ltd | CARBON COMPOSITE PRODUCT PRODUCED BY JOINING CARBONACEOUS MATERIALS WITH A TETRAFLUOROETHYLENE RESIN, AND PROCESS FOR PRODUCING THE SAME |
JPS6298570A (en) * | 1985-10-25 | 1987-05-08 | Kureha Chem Ind Co Ltd | Electrode substrate for end seal-mounting fuel cell and its manufacture |
JPS6324564A (en) * | 1986-07-16 | 1988-02-01 | Mitsubishi Electric Corp | Fuel cell |
EP1392490A1 (en) * | 2001-06-01 | 2004-03-03 | Graftech Inc. | Hydrophobic fuel cell component |
JP2006164764A (en) * | 2004-12-08 | 2006-06-22 | Toyota Motor Corp | Fuel cell |
JP2007053007A (en) * | 2005-08-18 | 2007-03-01 | Toyota Motor Corp | Fuel cell |
WO2009019193A1 (en) * | 2007-08-08 | 2009-02-12 | Sgl Carbon Ag | Laminate |
-
1981
- 1981-07-16 JP JP56111609A patent/JPS5812267A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2587696A1 (en) * | 1985-09-25 | 1987-03-27 | Kureha Chemical Ind Co Ltd | CARBON COMPOSITE PRODUCT PRODUCED BY JOINING CARBONACEOUS MATERIALS WITH A TETRAFLUOROETHYLENE RESIN, AND PROCESS FOR PRODUCING THE SAME |
JPS6298570A (en) * | 1985-10-25 | 1987-05-08 | Kureha Chem Ind Co Ltd | Electrode substrate for end seal-mounting fuel cell and its manufacture |
JPH0582714B2 (en) * | 1985-10-25 | 1993-11-22 | Kureha Chemical Ind Co Ltd | |
JPS6324564A (en) * | 1986-07-16 | 1988-02-01 | Mitsubishi Electric Corp | Fuel cell |
EP1392490A1 (en) * | 2001-06-01 | 2004-03-03 | Graftech Inc. | Hydrophobic fuel cell component |
EP1392490A4 (en) * | 2001-06-01 | 2008-02-13 | Advanced Energy Tech | Hydrophobic fuel cell component |
JP2006164764A (en) * | 2004-12-08 | 2006-06-22 | Toyota Motor Corp | Fuel cell |
JP2007053007A (en) * | 2005-08-18 | 2007-03-01 | Toyota Motor Corp | Fuel cell |
WO2009019193A1 (en) * | 2007-08-08 | 2009-02-12 | Sgl Carbon Ag | Laminate |
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