JPH10308226A - High molecular solid electrolyte type fuel cell - Google Patents
High molecular solid electrolyte type fuel cellInfo
- Publication number
- JPH10308226A JPH10308226A JP9136196A JP13619697A JPH10308226A JP H10308226 A JPH10308226 A JP H10308226A JP 9136196 A JP9136196 A JP 9136196A JP 13619697 A JP13619697 A JP 13619697A JP H10308226 A JPH10308226 A JP H10308226A
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- polymer electrolyte
- solid polymer
- electrolyte fuel
- gas separator
- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
-
- 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
-
- 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
-
- 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
- H01M8/0223—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
- H01M8/0234—Carbonaceous material
-
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高分子固体電解質
型燃料電池において、ガス拡散電極間に挾持されるガス
セパレータを金属で構成して、該ガスセパレータの表面
にカーボンを含む付着膜を付着させたことにより、安価
に前記ガスセパレータと前記ガス拡散電極との接触抵抗
を低減して、高出力を可能にする高分子固体電解質型燃
料電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid polymer electrolyte fuel cell, wherein a gas separator sandwiched between gas diffusion electrodes is made of a metal, and an adhesion film containing carbon is deposited on the surface of the gas separator. The present invention relates to a solid polymer electrolyte fuel cell which can reduce the contact resistance between the gas separator and the gas diffusion electrode at a low cost, thereby enabling high output.
【０００２】[0002]
【従来の技術】従来の第１の高分子固体電解質型燃料電
池（特開平７−２７２７３１）は、ガス拡散電極間に挾
持されるガスセパレータをカーボンによって構成するも
のであった。2. Description of the Related Art In a first conventional solid polymer electrolyte fuel cell (JP-A-7-272731), a gas separator sandwiched between gas diffusion electrodes is made of carbon.
【０００３】従来の第２の高分子固体電解質型燃料電池
（特開平５−１０９４１５）は、ガス拡散電極間に挾持
されるガスセパレータを金属によって構成するものであ
った。In a second conventional solid polymer electrolyte fuel cell (JP-A-5-109415), a gas separator sandwiched between gas diffusion electrodes is made of metal.
【０００４】従来の第３の高分子固体電解質型燃料電池
は、前記金属セパレータの高出力化のためにガスセパレ
ータを構成する金属の表面に金メッキを施すものであっ
た。In the third conventional solid polymer electrolyte fuel cell, the surface of the metal constituting the gas separator is plated with gold in order to increase the output of the metal separator.
【０００５】[0005]
【発明が解決しようとする課題】上記従来の第１の高分
子固体電解質型燃料電池は、ガス拡散電極間に挾持され
るガスセパレータを高価なカーボンによって構成するも
のであるので、前記ガスセパレータが高価なものとな
り、燃料電池の製品としてコスト低減が難しいという問
題があった。In the first conventional solid polymer electrolyte fuel cell, the gas separator sandwiched between the gas diffusion electrodes is made of expensive carbon. It is expensive and there is a problem that it is difficult to reduce the cost as a fuel cell product.
【０００６】上記従来の第２の高分子固体電解質型燃料
電池は、ガス拡散電極間に挾持されるガスセパレータを
金属によって構成するものであるので、ガスセパレータ
自体のコストは安くなるものの、電極−セパレータ間の
接触抵抗が大きくなり、燃料電池としての高出力化が十
分に得られないという問題があった。In the above-mentioned second conventional solid polymer electrolyte fuel cell, the gas separator sandwiched between the gas diffusion electrodes is made of metal. There is a problem that the contact resistance between the separators is increased, and the output of the fuel cell cannot be sufficiently increased.
【０００７】上記従来の第３の高分子固体電解質型燃料
電池は、前記金属セパレータの高出力化のためにガスセ
パレータを構成する金属の表面に高価な金メッキを施す
ものであるので、燃料電池としてコスト低減が難しいと
いう問題があった。[0007] The third conventional solid polymer electrolyte fuel cell has expensive metal plating on the surface of the metal constituting the gas separator in order to increase the output of the metal separator. There was a problem that cost reduction was difficult.
【０００８】そこで本発明者らは、高分子固体電解質型
燃料電池において、ガス拡散電極間に挾持され金属で構
成されたガスセパレータの表面にカーボンを含む付着膜
を付着させるという本発明の技術的思想に着眼し、さら
に研究開発を重ねた結果、安価に前記ガスセパレータと
前記ガス拡散電極との接触抵抗を低減して、燃料電池と
しての高出力化を可能にするという目的を達成する本発
明に到達したものである。In view of the above, the inventors of the present invention have proposed a technique of the present invention in which in a solid polymer electrolyte fuel cell, an adhesion film containing carbon is deposited on the surface of a gas separator made of metal and sandwiched between gas diffusion electrodes. Focusing on the idea and conducting further research and development, the present invention achieves the object of reducing the contact resistance between the gas separator and the gas diffusion electrode at low cost and enabling high output as a fuel cell. Is reached.
【０００９】[0009]
【課題を解決するための手段】本発明（請求項１に記載
の第１発明）の高分子固体電解質型燃料電池は、高分子
固体電解質型燃料電池において、ガス拡散電極間に挾持
されるガスセパレータを金属で構成して、該ガスセパレ
ータの表面の少なくとも前記ガス拡散電極との接触面に
カーボンを含む付着膜を付着させたものである。According to a first aspect of the present invention, there is provided a solid polymer electrolyte fuel cell comprising a gas sandwiched between gas diffusion electrodes in a solid polymer electrolyte fuel cell. The separator is made of a metal, and an attachment film containing carbon is attached to at least a surface of the gas separator that is in contact with the gas diffusion electrode.
【００１０】本発明（請求項２に記載の第２発明）の高
分子固体電解質型燃料電池は、前記第１発明において、
前記付着膜は、該付着膜を構成する主金属の中にカーボ
ンが混ぜ込まれているものである。[0010] The solid polymer electrolyte fuel cell according to the present invention (the second invention according to claim 2) is characterized in that in the first invention,
The adhesion film is a material in which carbon is mixed in a main metal constituting the adhesion film.
【００１１】本発明（請求項３に記載の第３発明）の高
分子固体電解質型燃料電池は、前記第２発明において、
前記付着膜を構成する前記主金属の中に混ぜ込まれる前
記カーボンが、微粒、針状その他の形状に形成されてい
るものである。The solid polymer electrolyte fuel cell according to the present invention (third invention according to claim 3) is characterized in that in the second invention,
The carbon mixed into the main metal constituting the adhesion film is formed into fine particles, needles, or other shapes.
【００１２】本発明（請求項４に記載の第４発明）の高
分子固体電解質型燃料電池は、前記第３発明において、
前記付着膜が、メッキ、蒸着、スパッタリング、塗装そ
の他の表面処理によって形成されているものである。[0012] The solid polymer electrolyte fuel cell according to the present invention (fourth invention according to claim 4) is characterized in that in the third invention,
The adhesion film is formed by plating, vapor deposition, sputtering, painting or other surface treatment.
【００１３】本発明（請求項５に記載の第５発明）の高
分子固体電解質型燃料電池は、前記第３発明において、
前記付着膜を構成する前記主金属が、硫酸、水素、水蒸
気などに腐食されることなくメッキ可能な金属によって
構成されているものである。The solid polymer electrolyte fuel cell according to the present invention (fifth invention according to claim 5) is characterized in that in the third invention,
The main metal forming the adhesion film is formed of a metal that can be plated without being corroded by sulfuric acid, hydrogen, water vapor, or the like.
【００１４】本発明（請求項６に記載の第６発明）の高
分子固体電解質型燃料電池は、前記第１発明において、
前記ガスセパレータを構成する前記金属が、アルミニウ
ム、鉄、ステンレス等によって構成されているものであ
る。The solid polymer electrolyte fuel cell according to the present invention (the sixth invention according to the sixth invention) is characterized in that in the first invention,
The metal constituting the gas separator is made of aluminum, iron, stainless steel or the like.
【００１５】本発明（請求項７に記載の第７発明）の高
分子固体電解質型燃料電池は、前記第６発明において、
前記ガス拡散電極が、カーボンペーパー、カーボンクロ
ス等によって構成されているものである。According to a sixth aspect of the present invention, there is provided a solid polymer electrolyte fuel cell according to the present invention (a seventh aspect of the present invention).
The gas diffusion electrode is made of carbon paper, carbon cloth, or the like.
【００１６】本発明（請求項８に記載の第８発明）の高
分子固体電解質型燃料電池は、前記第５発明において、
前記付着膜が、前記ガスセパレータの表面をメッキ処理
したＰｂ−Ｃのメッキ膜によって構成されているもので
ある。The solid polymer electrolyte fuel cell according to the present invention (the eighth invention according to claim 8) is the fuel cell according to the fifth invention, wherein
The adhesion film is formed of a Pb-C plating film obtained by plating the surface of the gas separator.
【００１７】本発明（請求項９に記載の第９発明）の高
分子固体電解質型燃料電池は、前記第８発明において、
前記主金属であるＰｂの中にグラファィトの一定粒径お
よび一定量の微粒が混ぜ込まれているものである。The solid polymer electrolyte fuel cell according to the present invention (a ninth invention according to a ninth invention) is characterized in that in the eighth invention,
A constant particle size and a constant amount of graphite are mixed in Pb as the main metal.
【００１８】[0018]
【発明の作用および効果】上記構成より成る第１発明の
高分子固体電解質型燃料電池は、ガス拡散電極間に挾持
され金属で構成された前記ガスセパレータの表面の少な
くとも前記ガス拡散電極との接触面にカーボンを含む付
着膜を付着させたので、少量のカーボンによって前記ガ
スセパレータと前記ガス拡散電極との接触抵抗を低減し
て、安価に燃料電池としての高出力化を可能にするとい
う効果を奏する。According to the first aspect of the present invention, there is provided a solid polymer electrolyte fuel cell according to the first aspect of the present invention, wherein at least the surface of the gas separator made of metal and held between the gas diffusion electrodes is in contact with at least the gas diffusion electrodes. Since an adhesion film containing carbon is adhered to the surface, the contact resistance between the gas separator and the gas diffusion electrode is reduced by a small amount of carbon, and the effect of enabling high output as a fuel cell at low cost is obtained. Play.
【００１９】上記構成より成る第２発明の高分子固体電
解質型燃料電池は、前記第１発明において、前記付着膜
は、該付着膜を構成する主金属の中にカーボンが混ぜ込
まれているので、前記主金属に混ぜ込まれた少量のカー
ボンによって、前記ガスセパレータと前記ガス拡散電極
との接触抵抗を低減するという効果を奏する。In the solid polymer electrolyte fuel cell according to the second aspect of the present invention having the above-mentioned structure, in the first aspect, the adhesion film is formed by mixing carbon in a main metal constituting the adhesion film. The effect of reducing the contact resistance between the gas separator and the gas diffusion electrode is provided by a small amount of carbon mixed into the main metal.
【００２０】上記構成より成る第３発明の高分子固体電
解質型燃料電池は、前記第２発明において、前記付着膜
を構成する前記主金属の中に混ぜ込まれる前記カーボン
が、微粒、針状その他の形状に形成されているので、前
記主金属に混ぜ込まれた少量の微粒、針状その他の形状
に形成されたカーボンによって、前記ガスセパレータと
前記ガス拡散電極との接触抵抗を低減するという効果を
奏する。According to a third aspect of the present invention, there is provided a solid polymer electrolyte fuel cell according to the second aspect, wherein the carbon mixed into the main metal constituting the adhered film contains fine particles, needles, or the like. The effect of reducing the contact resistance between the gas separator and the gas diffusion electrode by a small amount of fine particles mixed into the main metal, carbon formed in a needle-like or other shape is formed in the shape of To play.
【００２１】上記構成より成る第４発明の高分子固体電
解質型燃料電池は、前記第３発明において、前記付着膜
が、メッキ、蒸着、スパッタリング、塗装その他の表面
処理によって形成されているので、薄い付着膜の形成を
可能にするという効果を奏する。In the polymer solid oxide fuel cell according to the fourth aspect of the present invention having the above-mentioned structure, since the adhesion film is formed by plating, vapor deposition, sputtering, painting or other surface treatment in the third aspect of the invention, it is thin. There is an effect that the formation of the adhesion film is enabled.
【００２２】上記構成より成る第５発明の高分子固体電
解質型燃料電池は、前記第３発明において、前記付着膜
を構成する前記主金属が、硫酸、水素、水蒸気などに腐
食されることなくメッキ可能な金属によって構成されて
いるので、前記付着膜をメッキ処理によって形成するこ
とを可能にするという効果を奏する。According to a fifth aspect of the present invention, there is provided a solid polymer electrolyte fuel cell according to the third aspect, wherein the main metal forming the adhesion film is plated without being corroded by sulfuric acid, hydrogen, water vapor or the like. Since it is made of a possible metal, there is an effect that the adhesion film can be formed by plating.
【００２３】上記構成より成る第６発明の高分子固体電
解質型燃料電池は、前記第１発明において、前記ガスセ
パレータを構成する前記金属が、アルミニウム、鉄、ス
テンレス等の安価な金属によって構成されているので、
安価な燃料電池を実現するという効果を奏する。In the polymer electrolyte fuel cell according to the sixth aspect of the present invention, the metal constituting the gas separator is an inexpensive metal such as aluminum, iron or stainless steel. Because
This has the effect of realizing an inexpensive fuel cell.
【００２４】上記構成より成る第７発明の高分子固体電
解質型燃料電池は、前記第６発明において、前記ガス拡
散電極が、カーボンペーパー、カーボンクロス等によっ
て構成されているので、前記ガスセパレータを構成する
前記金属の前記ガス拡散電極との接触面にカーボンを含
む前記付着膜を付着させたので、前記ガス拡散電極と前
記付着膜との接触抵抗を有効に低減するという効果を奏
する。In the polymer solid oxide fuel cell according to the seventh aspect of the present invention having the above-described structure, the gas separator is constituted by carbon paper, carbon cloth, or the like in the sixth aspect, so that the gas separator is constituted. Since the adhesion film containing carbon is attached to the contact surface of the metal with the gas diffusion electrode, there is an effect that the contact resistance between the gas diffusion electrode and the adhesion film is effectively reduced.
【００２５】上記構成より成る第８発明の高分子固体電
解質型燃料電池は、前記第５発明において、前記付着膜
が、前記ガスセパレータの表面を簡単な表面処理である
メッキ処理によって形成されるとともに、形成された柔
らかい金属であるＰｂ中にカーボンが混ぜ込まれたＰｂ
−Ｃのメッキ膜によって構成されているので、前記ガス
セパレータと前記ガス拡散電極との接触抵抗を有効に低
減するとともに、安価な燃料電池を実現するという効果
を奏する。In the solid polymer electrolyte fuel cell according to the eighth aspect of the present invention having the above structure, in the fifth aspect, the adhesion film is formed by plating the surface of the gas separator by a simple surface treatment. , Pb which is a soft metal formed and Pb mixed with carbon
Since it is constituted by the -C plating film, it has the effects of effectively reducing the contact resistance between the gas separator and the gas diffusion electrode and realizing an inexpensive fuel cell.
【００２６】上記構成より成る第９発明の高分子固体電
解質型燃料電池は、前記第８発明において、前記主金属
であるＰｂの中にグラファィトの一定粒径および一定量
の微粒が混ぜ込まれているので、前記ガスセパレータと
前記ガス拡散電極との接触抵抗を一層有効に低減すると
いう効果を奏する。The solid electrolyte fuel cell according to the ninth aspect of the present invention having the above-mentioned structure is the same as that of the eighth aspect, except that Pb, which is the main metal, is mixed with a constant particle size and a constant amount of fine particles of graphite. Therefore, there is an effect that the contact resistance between the gas separator and the gas diffusion electrode is more effectively reduced.
【００２７】[0027]
【発明の実施の形態】以下本発明の実施の形態につき、
図面を用いて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention are described below.
This will be described with reference to the drawings.
【００２８】（実施形態）本実施形態の高分子固体電解
質型燃料電池は、図１に示されるように高分子固体電解
質型燃料電池において、ガス拡散電極間に挾持されるガ
スセパレータを金属で構成して、該ガスセパレータの表
面の少なくとも前記ガス拡散電極との接触面に主金属の
中にカーボンが混ぜ込まれた付着膜を付着させたもので
ある。(Embodiment) The solid polymer electrolyte fuel cell according to the present embodiment is different from the solid polymer electrolyte fuel cell shown in FIG. 1 in that a gas separator sandwiched between gas diffusion electrodes is made of metal. Then, an adhesion film in which carbon is mixed into the main metal is attached to at least the contact surface of the gas separator with the gas diffusion electrode.
【００２９】前記ガス拡散電極は、カーボンペーパー、
カーボンクロス等によって構成され、前記ガスセパレー
タは、アルミニウム、鉄、ステンレス等の金属によって
構成され、切削またはプレスによって作成される。The gas diffusion electrode is made of carbon paper,
The gas separator is made of carbon cloth or the like, and the gas separator is made of metal such as aluminum, iron, and stainless steel, and is made by cutting or pressing.
【００３０】前記付着膜は、メッキ、蒸着、スパッタリ
ング、塗装その他の表面処理によって形成され、前記付
着膜を構成する前記主金属の中に混ぜ込まれる前記カー
ボンは、微粒、針状その他の形状に形成されている。The deposited film is formed by plating, vapor deposition, sputtering, painting, or other surface treatment, and the carbon mixed into the main metal constituting the deposited film is formed into fine particles, needles, or other shapes. Is formed.
【００３１】前記付着膜を構成する前記主金属が、硫
酸、水素、水蒸気などに腐食されることなくメッキ可能
な比較的柔らかい金属例えば鉛その他によって構成され
ている。The main metal constituting the adhesion film is made of a relatively soft metal which can be plated without being corroded by sulfuric acid, hydrogen, water vapor or the like, for example, lead or the like.
【００３２】前記付着膜が、前記ガスセパレータの表面
をメッキ処理したＰｂ−Ｃのメッキ膜によって構成さ
れ、すなわち前記主金属であるＰｂの中にグラファィト
の一定粒径および一定量の微粒が混ぜ込まれている。The adhesion film is constituted by a Pb-C plating film obtained by plating the surface of the gas separator, that is, a fixed particle size and a fixed amount of graphite are mixed in the main metal Pb. It is rare.
【００３３】グラファィト粒は疎水性のため、グラファ
ィト粒に親水処理を施して、メッキ液に分散させ、前記
ガスセパレータ表面を酸性溶液で前処理を行い、表面の
酸化皮膜を除いた後、前記メッキ液の中に挿入され、メ
ッキ処理が行われる。Since the graphite particles are hydrophobic, the graphite particles are subjected to a hydrophilic treatment, dispersed in a plating solution, and the surface of the gas separator is pre-treated with an acidic solution to remove an oxide film on the surface. It is inserted into the solution and plating is performed.
【００３４】また塗装によって表面処理を行う場合に
は、導電性の接着剤にグラファィト粒を混ぜ込んで塗布
するか、あるいは導電性の接着剤を塗装して吹き付け、
その上にグラファィト粒を吹き付ける。前記ガスセパレ
ータ表面を酸性溶液で前処理を行い、表面の酸化皮膜を
予め除いた後、上記塗装が施される。In the case where the surface treatment is performed by painting, a mixture of graphite particles and a conductive adhesive is applied, or a conductive adhesive is applied and sprayed.
Spray graphite particles on it. The surface of the gas separator is pre-treated with an acidic solution to remove the oxide film on the surface in advance, and then the above coating is performed.
【００３５】（実施例）本第１実施例の高分子固体電解
質型燃料電池は、高分子固体電解質型燃料電池におい
て、カーボンペーパー、カーボンクロス等の金属で構成
されたガス拡散電極間に挾持され、アルミニウム、鉄、
ステンレス等の金属によって構成されたガスセパレータ
の表面の少なくとも前記ガス拡散電極との接触面に主金
属であるＰｂの中にカーボンとしてのグラファィトが混
ぜ込まれた付着膜を付着させたものである。(Embodiment) The solid polymer electrolyte fuel cell according to the first embodiment is sandwiched between gas diffusion electrodes made of a metal such as carbon paper and carbon cloth in the solid polymer electrolyte fuel cell. , Aluminum, iron,
At least the surface of the gas separator made of a metal such as stainless steel, which is in contact with the gas diffusion electrode, is provided with an adhesion film in which graphite as carbon is mixed in Pb which is a main metal.
【００３６】グラファィト粒は疎水性のため、グラファ
ィト粒に親水処理を施して、メッキ液に分散させ、前記
ガスセパレータ表面を酸性溶液で前処理を行い、表面の
酸化皮膜を除いた後、前記メッキ液の中に挿入され、メ
ッキ処理が行われる。Since the graphite particles are hydrophobic, the graphite particles are subjected to a hydrophilic treatment and dispersed in a plating solution. The surface of the gas separator is pretreated with an acidic solution to remove an oxide film on the surface. It is inserted into the solution and plating is performed.
【００３７】前記付着膜を構成する前記主金属が、硫
酸、水素、水蒸気などに腐食されることなくメッキ可能
な比較的柔らかい金属の一例として鉛その他によって構
成されている。The main metal constituting the adhesion film is made of lead or the like as an example of a relatively soft metal which can be plated without being corroded by sulfuric acid, hydrogen, water vapor or the like.
【００３８】前記付着膜が、前記ガスセパレータの表面
をメッキ処理したＰｂ−Ｃのメッキ膜によって構成さ
れ、すなわち前記主金属であるＰｂの中にグラファィト
の一定粒径および一定量の微粒が混ぜ込まれている。The adhesion film is constituted by a Pb-C plating film in which the surface of the gas separator is plated, that is, a fixed particle size and a fixed amount of graphite are mixed in the main metal Pb. It is rare.
【００３９】前記主金属であるＰｂの中にグラファィト
の一定粒径および一定量の微粒が混ぜ込まれている状態
を明らかにするために、電子線マイクロアナライザ（Ｅ
ＰＭＡ）によって１０００倍に拡大して、図１に示され
るように直径１０ミクロン程度のグラファィト粒とその
下に見えるのが鉛粒である。マトリックスとなる鉛中カ
ーボン粒（グラファィト粒）が巻き込まれ、表面にその
一部がのぞき出ている。An electron beam microanalyzer (E) was used to clarify a state in which a constant particle size and a constant amount of graphite were mixed in the main metal Pb.
As shown in FIG. 1, graphite particles having a diameter of about 10 μm and lead particles are visible under the graphite particles, as shown in FIG. Carbon particles (graphite particles) in lead that become a matrix are entangled, and some of them are exposed on the surface.
【００４０】上記第１実施例のガスセパレータの性能を
比較するための、比較例１は、金属によって構成された
ガスセパレータの表面に鉛Ｐｂのメッキ膜を形成したも
のであり、比較例２は、上記従来の第３のガスセパレー
タに関するもので、金属によって構成されたガスセパレ
ータの表面に金Ａｕのメッキ膜を形成したものである。In order to compare the performances of the gas separator of the first embodiment, Comparative Example 1 is one in which a lead Pb plating film is formed on the surface of a gas separator made of metal, and Comparative Example 2 is The present invention relates to the above-mentioned third conventional gas separator, wherein a gold Au plating film is formed on the surface of a gas separator made of metal.
【００４１】ガスセパレータの表面に鉛Ｐｂのメッキ膜
が形成された前記比較例１は、面圧と接触抵抗との関係
を示す図２から明らかなようにあらゆる面圧で接触抵抗
が大きいが、本第１実施例のガスセパレータは、ガスセ
パレータの表面に金Ａｕのメッキ膜を形成した比較例２
に近似する接触抵抗の面圧分布を示すものである。In Comparative Example 1 in which a lead Pb plating film was formed on the surface of the gas separator, the contact resistance was large at all surface pressures, as is apparent from FIG. 2 showing the relationship between the surface pressure and the contact resistance. The gas separator of the first embodiment is a comparative example 2 in which a gold Au plating film is formed on the surface of the gas separator.
2 shows a surface pressure distribution of a contact resistance similar to that of FIG.
【００４２】第２実施例のガスセパレータは、ＳＵＳ３
０４Ｋ ステンレス鋼で基材を構成した４５ｍｍ×５２
ｍｍ×０．３ ｍｍ（ｔ）の試験片について、以下のよ
うにメッキ処理した各試験片について、面圧と接触抵抗
との関係を求めた。The gas separator of the second embodiment is SUS3
45K × 52 with base material made of 04K stainless steel
The relationship between the surface pressure and the contact resistance was determined for each of the test pieces plated as follows with respect to the test pieces of mm × 0.3 mm (t).
【００４３】ウッドＮｉストライクして、無電解Ｎｉメ
ッキ（５μｍ）を施した後、グラファィト共析鉛メッキ
（５μｍ）を施して、共析量５ｖｏｌ％である試作板Ａ
と、ウッドＮｉストライクした後、グラファィト共析鉛
メッキ（１０μｍ）を施して、共析量５ｖｏｌ％である
試作板Ａ′と、ウッドＮｉストライクして、鉛メッキ
（１０μｍ）を施した後、グラファィト共析鉛メッキ
（０．５μｍ）を施して、共析量１０ｖｏｌ％である試
作板Ｂと、ウッドＮｉストライクして、無電解Ｎｉメッ
キ（１０μｍ）を施した後、グラファィト共析鉛メッキ
（０．５μｍ）を施して、共析量１０ｖｏｌ％である試
作板Ａとについて、接触面積１０ｃｍ2 について、印加
電流５Ａ（０．５Ａ／ｃｍ2 ）で行った面圧と接触抵抗
との関係の測定結果を、図３に示す。After a wood Ni strike, electroless Ni plating (5 μm) was applied, graphite eutectoid lead plating (5 μm) was applied, and a prototype plate A having an eutectoid amount of 5 vol% was obtained.
After a Ni-strike, a graphite eutectoid lead plating (10 μm) was applied, and a prototype plate A ′ having an eutectoid amount of 5 vol%, a Wood-Ni strike, a lead plating (10 μm), and a graphite were applied. After eutectoid lead plating (0.5 μm), a prototype plate B having an eutectoid amount of 10 vol%, wood Ni strike, electroless Ni plating (10 μm), and then graphite eutectoid lead plating (0 .5Myuemu) is subjected to, for prototyping plate and a is a eutectoid amount 10 vol%, the contact for the area 10 cm 2, applied current 5A (measurement of the relationship between contact resistance and contact pressure was carried out at 0.5A / cm 2) The results are shown in FIG.
【００４４】図３から明らかなように、比較例であるＡ
ｕメッキ膜を形成した上記第３の従来例と前記Ｐｂメッ
キ膜を形成した前記比較例１との接触抵抗の間であっ
て、試作板Ａ′試作板Ａ、試作板Ｃ、試作板Ｂの順で接
触抵抗が低いものである。As is apparent from FIG. 3, the comparative example A
The contact resistance between the third conventional example having the u-plated film formed thereon and the comparative example 1 having the Pb-plated film formed thereon, is the difference between the prototype A ', the prototype A, the prototype C, and the prototype B. The contact resistance is lower in order.
【００４５】上述の実施形態は、説明のために例示した
もので、本発明としてはそれらに限定されるものでは無
く、特許請求の範囲、発明の詳細な説明および図面の記
載から当業者が認識することができる本発明の技術的思
想に反しない限り、変更および付加が可能である。The above-described embodiments have been described by way of example only, and the present invention is not limited to these embodiments. Those skilled in the art will recognize from the claims, the detailed description of the invention, and the drawings. Modifications and additions are possible without departing from the technical idea of the present invention.
【図１】本発明の第１実施例のＰｂ−Ｃメッキ膜の電子
線マイクロアナライザによる拡大写真である。FIG. 1 is an enlarged photograph of a Pb-C plating film according to a first embodiment of the present invention, taken by an electron beam microanalyzer.
【図２】本第１実施例のＰｂ−Ｃメッキ膜、比較例１お
よび比較例２（第３の従来例）の接触抵抗と面圧の関係
を示す線図である。FIG. 2 is a diagram showing the relationship between the contact resistance and the surface pressure of the Pb-C plating film of the first embodiment, Comparative Examples 1 and 2 (third conventional example).
【図３】本発明の第２実施例の各種Ｐｂ−Ｃメッキ膜、
比較例１および比較例２（第３の従来例）の接触抵抗と
面圧の関係を示す線図である。FIG. 3 shows various Pb-C plating films according to a second embodiment of the present invention,
FIG. 9 is a diagram showing a relationship between contact resistance and surface pressure in Comparative Examples 1 and 2 (third conventional example).
Claims (9)
成して、 該ガスセパレータの表面の少なくとも前記ガス拡散電極
との接触面にカーボンを含む付着膜を付着させたことを
特徴とする高分子固体電解質型燃料電池。In a solid polymer electrolyte fuel cell, a gas separator sandwiched between gas diffusion electrodes is made of metal, and at least a surface of the gas separator that contains carbon is in contact with the gas diffusion electrode. A solid polymer electrolyte fuel cell characterized by having an adhesion film adhered thereto.
ンが混ぜ込まれていることを特徴とする高分子固体電解
質型燃料電池。2. The solid polymer electrolyte fuel cell according to claim 1, wherein the adhered film has carbon mixed in a main metal constituting the adhered film.
記カーボンが、微粒、針状その他の形状に形成されてい
ることを特徴とする高分子固体電解質型燃料電池。3. The solid polymer electrolyte according to claim 2, wherein the carbon mixed into the main metal forming the adhesion film is formed in fine particles, needles, or other shapes. Type fuel cell.
の他の表面処理によって形成されていることを特徴とす
る高分子固体電解質型燃料電池。4. The solid polymer electrolyte fuel cell according to claim 3, wherein the adhesion film is formed by plating, vapor deposition, sputtering, painting or other surface treatment.
気などに腐食されることなくメッキ可能な比較的柔らか
い金属によって構成されていることを特徴とする高分子
固体電解質型燃料電池。5. The method according to claim 3, wherein the main metal forming the adhesion film is made of a relatively soft metal that can be plated without being corroded by sulfuric acid, hydrogen, water vapor, or the like. Polymer solid electrolyte fuel cell.
ム、鉄、ステンレス等によって構成されていることを特
徴とする高分子固体電解質型燃料電池。6. The solid polymer electrolyte fuel cell according to claim 1, wherein the metal constituting the gas separator is made of aluminum, iron, stainless steel, or the like.
ス等によって構成されていることを特徴とする高分子固
体電解質型燃料電池。7. The solid polymer electrolyte fuel cell according to claim 6, wherein the gas diffusion electrode is made of carbon paper, carbon cloth, or the like.
したＰｂ−Ｃのメッキ膜によって構成されていることを
特徴とする高分子固体電解質型燃料電池。8. The solid polymer electrolyte fuel cell according to claim 5, wherein the adhesion film is formed of a Pb-C plating film obtained by plating a surface of the gas separator.
よび一定量の微粒が混ぜ込まれていることを特徴とする
高分子固体電解質型燃料電池。9. The solid polymer electrolyte fuel cell according to claim 8, wherein a fixed particle size and a fixed amount of graphite are mixed in the main metal Pb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9136196A JPH10308226A (en) | 1997-05-08 | 1997-05-08 | High molecular solid electrolyte type fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9136196A JPH10308226A (en) | 1997-05-08 | 1997-05-08 | High molecular solid electrolyte type fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10308226A true JPH10308226A (en) | 1998-11-17 |
Family
ID=15169596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9136196A Pending JPH10308226A (en) | 1997-05-08 | 1997-05-08 | High molecular solid electrolyte type fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10308226A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999019927A1 (en) * | 1997-10-14 | 1999-04-22 | Nisshin Steel Co., Ltd. | Separator for low temperature type fuel cell and method of production thereof |
| EP1035608A2 (en) * | 1999-02-09 | 2000-09-13 | Nisshinbo Industries, Inc. | Separator for fuel cell and solid polymer type fuel cell using said separator |
| WO2001043217A1 (en) * | 1999-12-06 | 2001-06-14 | Hitachi Chemical Company, Ltd. | Fuel cell, fuel cell separator, and method of manufacture thereof |
| WO2001028019A3 (en) * | 1999-10-08 | 2002-03-14 | Allied Signal Inc | Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities and method of making the same |
| EP1300901A2 (en) * | 2001-10-06 | 2003-04-09 | Behr GmbH & Co. | Fuel cell, in particular fuel cell with polymeric electrolyte or direct methanol fuel cell |
| WO2003079477A1 (en) * | 2002-03-15 | 2003-09-25 | Kabushiki Kaisha Riken | Cell unit of solid polymeric electrolyte type fuel cell |
| EP1367663A2 (en) * | 2002-03-15 | 2003-12-03 | Kabushiki Kaisha Riken | Solid polymer electrolyte fuel cell unit |
| EP1148566A3 (en) * | 2000-04-19 | 2004-12-15 | Toyota Jidosha Kabushiki Kaisha | Fuel cell separator, manufacturing method thereof and fuel cell |
-
1997
- 1997-05-08 JP JP9136196A patent/JPH10308226A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6440598B1 (en) | 1997-10-14 | 2002-08-27 | Nisshin Steel Co., Ltd. | Separator for low temperature type fuel cell and method of production thereof |
| WO1999019927A1 (en) * | 1997-10-14 | 1999-04-22 | Nisshin Steel Co., Ltd. | Separator for low temperature type fuel cell and method of production thereof |
| EP1035608A2 (en) * | 1999-02-09 | 2000-09-13 | Nisshinbo Industries, Inc. | Separator for fuel cell and solid polymer type fuel cell using said separator |
| EP1035608A3 (en) * | 1999-02-09 | 2003-02-05 | Nisshinbo Industries, Inc. | Separator for fuel cell and solid polymer type fuel cell using said separator |
| US6649031B1 (en) | 1999-10-08 | 2003-11-18 | Hybrid Power Generation Systems, Llc | Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities and method of making the same |
| US7482083B2 (en) | 1999-10-08 | 2009-01-27 | General Electric Company | Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities |
| WO2001028019A3 (en) * | 1999-10-08 | 2002-03-14 | Allied Signal Inc | Corrosion resistant coated fuel cell bipolar plate with filled-in fine scale porosities and method of making the same |
| US6794078B1 (en) | 1999-12-06 | 2004-09-21 | Hitachi Chemical Company, Ltd. | Fuel cell, fuel cell separator, and method of manufacture thereof |
| WO2001043217A1 (en) * | 1999-12-06 | 2001-06-14 | Hitachi Chemical Company, Ltd. | Fuel cell, fuel cell separator, and method of manufacture thereof |
| EP1148566A3 (en) * | 2000-04-19 | 2004-12-15 | Toyota Jidosha Kabushiki Kaisha | Fuel cell separator, manufacturing method thereof and fuel cell |
| EP1300901A3 (en) * | 2001-10-06 | 2006-01-11 | Behr GmbH & Co. KG | Fuel cell, in particular fuel cell with polymeric electrolyte or direct methanol fuel cell |
| EP1300901A2 (en) * | 2001-10-06 | 2003-04-09 | Behr GmbH & Co. | Fuel cell, in particular fuel cell with polymeric electrolyte or direct methanol fuel cell |
| EP1367663A2 (en) * | 2002-03-15 | 2003-12-03 | Kabushiki Kaisha Riken | Solid polymer electrolyte fuel cell unit |
| WO2003079477A1 (en) * | 2002-03-15 | 2003-09-25 | Kabushiki Kaisha Riken | Cell unit of solid polymeric electrolyte type fuel cell |
| US6972162B2 (en) | 2002-03-15 | 2005-12-06 | Kabushiki Kaisha Riken | Solid polymer electrolyte fuel cell unit |
| EP1367663A3 (en) * | 2002-03-15 | 2006-10-04 | Kabushiki Kaisha Riken | Solid polymer electrolyte fuel cell unit |
| CN1314153C (en) * | 2002-03-15 | 2007-05-02 | 株式会社理研 | Cell unit of solid polymeric electrolyte type fuel cell |
| CN100452513C (en) * | 2002-03-15 | 2009-01-14 | 株式会社理研 | Solid polymer electrolyte fuel cell unit |
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