JPS62119868A - Fuel cell - Google Patents
Fuel cellInfo
- Publication number
- JPS62119868A JPS62119868A JP60258638A JP25863885A JPS62119868A JP S62119868 A JPS62119868 A JP S62119868A JP 60258638 A JP60258638 A JP 60258638A JP 25863885 A JP25863885 A JP 25863885A JP S62119868 A JPS62119868 A JP S62119868A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- reservoir
- pressure
- electrode
- flow path
- 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
- H01M8/0289—Means for holding the electrolyte
-
- 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
- H01M8/08—Fuel cells with aqueous electrolytes
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、燃料電池に関するものであり、もう少し詳
しくいうと、燃料極と空気極に燃料ガスおよび空気をそ
れぞれ供給するセパレータ板に、電解液を貯えるリザー
バが形成されている積層形の燃料電池に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a fuel cell, and more specifically, an electrolyte is applied to a separator plate that supplies fuel gas and air to a fuel electrode and an air electrode, respectively. This invention relates to a stacked fuel cell in which a reservoir is formed to store .
第３図は、たとえば、特開昭！ ｔ −／１．！５２！
’Ｉ号公報に示された従来の燃料電池を示し、図におい
て、燃料ガスおよび空気を分離するセパレーター板（／
ｌに、電解液保持のためのリザーバ（２）、燃料ガスを
供給するための燃料流路（３）、燃料流路（３）の面と
は反対側の面に、燃料流路（３）と直交して空気流路（
４１）が設けられている。燃料極（５）は燃料流路（３
）に接して積層されており、電解液を含浸させたマトリ
ックス（６）Ｋ接して空気極（７）が積層されている。Figure 3 shows, for example, Tokkai Sho! t-/1. ! 52!
The conventional fuel cell shown in Publication 'I is shown, and the figure shows a separator plate (/
l, a reservoir (2) for holding the electrolyte, a fuel flow path (3) for supplying fuel gas, and a fuel flow path (3) on the opposite side to the surface of the fuel flow path (3). The air flow path (
41) is provided. The fuel electrode (5) is connected to the fuel flow path (3
), and an air electrode (7) is stacked in contact with a matrix (6) K impregnated with an electrolytic solution.
空気極（り１のマトリックス（６）と接していない反対
面はセパレータ板（／ｌの空気流路（＜ｚｌと接してい
る。燃料極［３１の周辺部にはリザーバ（２）よシマ）
ＩＪツクス（６）へ電解液を導くシール部マトリック
ス（ざ）が配置されている。The opposite side of the air electrode (not in contact with the matrix (6) of 1) is a separator plate (in contact with the air flow path (<zl) of the air electrode [31]. There is a reservoir (2) around the fuel electrode [31])
A seal matrix is arranged to guide the electrolyte to the IJ tube (6).
以上の構成により、燃料ガスおよび空気は、セパレータ
板（ｌｌで分離され、互いに直父した燃料流路（３）お
よび空気流路（弘）を通ってそれぞれ燃料極（Ｌｔｌお
よび空気極（７）へ導かれる。また、電解液は予め塗布
含浸されたマトリックス（６）およびシール部マトリッ
クス（ざ）と、リザーバ（２）の内部に存在し、これら
各部分の電解液は連通されている。燃料極（、ｔｌおよ
び空気極（７）へそれぞれ導かれた燃料ガスおよび空気
は、マ） ＩＪラックスＡｌを介して電気化学的反応を
行い、燃料電池出力が得られる。このとき、セパレータ
板（／ｌ外部の空気と燃料流路（３）内の燃料ガスは、
シール部マトリックス（ざ）によりシールされている。With the above configuration, the fuel gas and air are separated by the separator plate (ll) and pass through the fuel flow path (3) and air flow path (hiro) that are directly connected to each other, respectively, to the fuel electrode (Ltl) and the air electrode (7). Further, the electrolytic solution is present inside the reservoir (2) with the matrix (6) which has been applied and impregnated in advance, and the sealing part matrix (zone), and the electrolytic solution in each of these parts is communicated with each other.Fuel The fuel gas and air guided to the electrode (, tl and air electrode (7), respectively, undergo an electrochemical reaction through the IJ Lux Al, and a fuel cell output is obtained. At this time, the separator plate (/ l External air and fuel gas in the fuel flow path (3) are
Sealed by a sealing matrix.
〔発明が解決しようとする問題点３
以上のような従来の燃料電池では、リザーバ（２）内部
の電解液圧力は、セパレータ板（１）端面からリザーバ
（２）までの距離とリザーバ（２１から燃料流路（，７
１までの距離との比によって決まるため、空気と燃料ガ
スの圧力の中間の圧力に維持され、リザーバ（２）内部
の電解液とシール部マトリックス（ｆｆｌを介して連結
されたマトリックス（６）内部の電解液も同様の圧力に
維持される。燃料電池では、通常、空気の圧力を燃料ガ
スの圧力よりも少し高く設定して動作されるので、マト
リックス（６）の内部で空気圧および燃料ガスの中間の
圧力に維持された！解液は、リザーバ（２）からシール
部マトリックス（ｆｆｌ、！−マトリックス（６）を介
して、燃料極（５１の方へ移動される。これは、燃料極
（３１表面への電解液の過剰供給を来たして燃料電池の
特性を劣下させるという問題点があった。[Problem to be Solved by the Invention 3] In the conventional fuel cell as described above, the electrolyte pressure inside the reservoir (2) is determined by the distance from the end face of the separator plate (1) to the reservoir (2) and the distance from the reservoir (21 to Fuel flow path (,7
1, the electrolyte inside the reservoir (2) is maintained at a pressure intermediate between that of the air and the fuel gas, and the electrolyte inside the reservoir (2) is connected to the inside of the matrix (6) through the seal matrix (ffl). The electrolyte in the matrix (6) is also maintained at a similar pressure.In a fuel cell, the air pressure is normally set slightly higher than the fuel gas pressure, so the air pressure and fuel gas pressure are maintained inside the matrix (6). The solution, maintained at an intermediate pressure, is transferred from the reservoir (2) through the sealing matrix (ffl,!-matrix (6) towards the anode (51). There was a problem in that excessive supply of electrolyte to the No. 31 surface resulted in deterioration of the characteristics of the fuel cell.
この発明は上記のような問題点を解消するためになされ
たもので、電解液の圧力を燃料ガス圧力と均一化するこ
とのできる燃料電池を得ることを目的とする。This invention was made to solve the above-mentioned problems, and an object thereof is to obtain a fuel cell in which the pressure of an electrolytic solution can be made equal to the pressure of a fuel gas.
この発明に係る燃料電池は、燃料極の一部であってリザ
ーバと燃料流路との間の位置に、電解液の通過を阻止す
るがガスを通過させる均圧部材が配設されている。In the fuel cell according to the present invention, a pressure equalizing member that is part of the fuel electrode and is located between the reservoir and the fuel flow path is disposed to prevent the electrolyte from passing through but allows gas to pass through.
この発明においては、燃料流路内の燃料ガスが、均圧部
材を介してリザーバ内部にまで浸透することにより、リ
ザーバ内部の電解液の圧力が燃料ガスの圧力と均一化さ
れ、また、マトリックス内の電解液の圧力も燃料ガスの
圧力と均一となる。In this invention, the fuel gas in the fuel flow path permeates into the reservoir through the pressure equalizing member, so that the pressure of the electrolytic solution inside the reservoir is equalized with the pressure of the fuel gas, and the pressure within the matrix is equalized. The pressure of the electrolyte becomes equal to the pressure of the fuel gas.
第１図、第２図はこの発明の一実施例を示し、第１図に
おいて、燃料極（、ｔｌがセパレータ板（ハの燃料流路
（３）とリザーバ（２）の間の部分と接する部益に均圧
部材（ｑｌが設けられている。均圧部材（９）は、燃料
極（５）の基材にフッ素樹脂粒子を含浸させ、焼成する
ことによシ、撥水性と通気性を有し、電解液の通過を阻
止するが、ガスを通過させる機能を有する。その他、第
３図におけると同一符号は、同一部分を示している。FIGS. 1 and 2 show an embodiment of the present invention. In FIG. A pressure equalizing member (ql) is provided at the bottom.The pressure equalizing member (9) is made by impregnating the base material of the fuel electrode (5) with fluororesin particles and baking it to improve water repellency and air permeability. It has a function of blocking the passage of electrolyte solution but allowing gas to pass through.Other than that, the same reference numerals as in FIG. 3 indicate the same parts.
第２図はセパレータ板（１）と燃料極（５１が積層され
た状態を示している。FIG. 2 shows a state in which a separator plate (1) and a fuel electrode (51) are stacked.
以上の構成によシ、燃料極（ｓ）に設けた均圧部材（９
）は、撥水処理をされているため、電解液は通さない。According to the above configuration, the pressure equalizing member (9) provided on the fuel electrode (s)
) has been treated to be water repellent, so electrolyte does not pass through it.
よって、リザーバ（２）内部の電解液は燃料流路（３）
の方へ漏れないが、燃料流路（３）中のガスは容易にリ
ザーバ（２）の内部にまで浸透し、リザーバ（λ）内部
の電解液は燃料ガスの圧力に均圧化される。Therefore, the electrolyte inside the reservoir (2) flows through the fuel flow path (3).
Although the gas in the fuel flow path (3) easily penetrates into the reservoir (2), the electrolytic solution inside the reservoir (λ) is equalized to the pressure of the fuel gas.
この際、リザーバ（２）内部と空気のシールはシール部
マトリックス（ｆｆｌによって行われている。At this time, sealing between the inside of the reservoir (2) and the air is performed by a sealing part matrix (ffl).
なお、上記実施例では、均圧部材（９）が、はぼリザー
バ（２）の長さと同じ長さであるように示・したが、均
圧部材（？）の長さがリザーバ（２１の長さよりも短か
くても同様の効果が期待できる。また、均圧部材（９）
を、リザーバ（２）と燃料流路（３）の間の部分と接す
る燃料極（５）中に並列に数本並べたようなものでも構
わない。さらに、均圧部材（ｔｌを燃料極（、＄−１の
一部でなく、独立した部材、たとえばフッ素樹脂シート
としてもよい。In the above embodiment, the pressure equalizing member (9) was shown to have the same length as the reservoir (2), but the length of the pressure equalizing member (?) is the same as that of the reservoir (21). The same effect can be expected even if it is shorter than the length.Also, the pressure equalizing member (9)
It is also possible to arrange several of them in parallel in the fuel electrode (5) which is in contact with the portion between the reservoir (2) and the fuel flow path (3). Furthermore, the pressure equalizing member (tl) may not be a part of the fuel electrode ($-1), but may be an independent member, such as a fluororesin sheet.
この発明は、以上の説明から明らかなように、燃料極の
、リザーバと燃料流路との間の位置に、撥水性の均圧部
材を設けたことによシ、電解液の圧力を燃料ガスの圧力
と均圧化させたので、電解液自身の圧力により電解液が
マトリックスよシ燃料極側へ押しやられて移動すること
を防止でき、長期的に特性劣化の少ない燃料電池が得ら
れるという効果がある。As is clear from the above description, the present invention provides a water-repellent pressure equalizing member at a position between the reservoir and the fuel flow path of the fuel electrode, thereby adjusting the pressure of the electrolyte to the fuel gas. Since the pressure is equalized with the pressure of the electrolyte, it is possible to prevent the electrolyte from moving away from the matrix toward the fuel electrode due to the electrolyte's own pressure, resulting in a fuel cell with less deterioration of characteristics over the long term. There is.
第１図はこの発明の一実施例の断面図、第２図は第１図
のものの部分平面図、第３図は従来の燃料電池の断面図
である。
（／ｌ・・セパレータ板、（コト・リサーバ、 （，７
）・・燃料ｆＬｗ＆、（ｕ）・・空気流路、（ｒｌ・・
燃料極、（６）・・マトリックス、 （７） ＠・空気
極、（ｔ）・・シール部マトリックス、（ｑ）・・均圧
部材。
なお、各図中、同一符号は同−又は相当部分を示す。
Ｘ−１
代理人 曽 我 道 照“ ・：づ・FIG. 1 is a cross-sectional view of an embodiment of the present invention, FIG. 2 is a partial plan view of the fuel cell shown in FIG. 1, and FIG. 3 is a cross-sectional view of a conventional fuel cell. (/l...Separator plate, (Koto Reserver, (,7
)...Fuel fLw&, (u)...Air flow path, (rl...
Fuel electrode, (6)...Matrix, (7) @Air electrode, (t)...Seal matrix, (q)...Pressure equalization member. In each figure, the same reference numerals indicate the same or corresponding parts. X-1 Agent Teru Soga Michi “・:zu・
Claims (4)
ックスを挾持する燃料極および空気極と、前記燃料極お
よび空気極に燃料ガスおよび空気をそれぞれ供給する燃
料流路および空気流路さらに電解液を貯えるリザーバが
形成されたセパレータ板と、前記燃料流路と前記リザー
バの間の部位の前記燃料極の層に配設され前記電解液の
通過を阻止するがガスを通過させる均圧部材とを備えて
なる燃料電池。(1) A matrix impregnated with an electrolytic solution, a fuel electrode and an air electrode that sandwich this matrix, a fuel flow path and an air flow path that supply fuel gas and air to the fuel electrode and the air electrode, respectively, and an electrolytic solution. A separator plate in which a reservoir for storage is formed, and a pressure equalizing member disposed in a layer of the fuel electrode at a portion between the fuel flow path and the reservoir to prevent passage of the electrolyte but allow gas to pass. fuel cell.
なる均圧部材を備えた特許請求の範囲第１項記載の燃料
電池。(2) The fuel cell according to claim 1, comprising a pressure equalizing member formed by impregnating and firing fluororesin particles into the base material of the fuel electrode.
項記載の燃料電池。(3) Claim 1 in which a plurality of pressure equalizing members are arranged in parallel
Fuel cell as described in Section.
求の範囲第１項記載の燃料電池。(4) The fuel cell according to claim 1, comprising a pressure equalizing member made of a fluororesin sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60258638A JPS62119868A (en) | 1985-11-20 | 1985-11-20 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60258638A JPS62119868A (en) | 1985-11-20 | 1985-11-20 | Fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62119868A true JPS62119868A (en) | 1987-06-01 |
Family
ID=17323047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60258638A Pending JPS62119868A (en) | 1985-11-20 | 1985-11-20 | Fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62119868A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014209489A (en) * | 2010-01-25 | 2014-11-06 | ラモット アット テル−アヴィヴ ユニヴァーシテイ リミテッドＲａｍｏｔ Ａｔ Ｔｅｌ−Ａｖｉｖｕｎｉｖｅｒｓｉｔｙ Ｌｔｄ | Energy storage and generation system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191270A (en) * | 1983-04-14 | 1984-10-30 | Fuji Electric Corp Res & Dev Ltd | Electrolyte feed structure for matrix fuel cell |
-
1985
- 1985-11-20 JP JP60258638A patent/JPS62119868A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59191270A (en) * | 1983-04-14 | 1984-10-30 | Fuji Electric Corp Res & Dev Ltd | Electrolyte feed structure for matrix fuel cell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014209489A (en) * | 2010-01-25 | 2014-11-06 | ラモット アット テル−アヴィヴ ユニヴァーシテイ リミテッドＲａｍｏｔ Ａｔ Ｔｅｌ−Ａｖｉｖｕｎｉｖｅｒｓｉｔｙ Ｌｔｄ | Energy storage and generation system |
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