JPH0831323B2 - Molten carbonate fuel cell - Google Patents
Molten carbonate fuel cellInfo
- Publication number
- JPH0831323B2 JPH0831323B2 JP63335309A JP33530988A JPH0831323B2 JP H0831323 B2 JPH0831323 B2 JP H0831323B2 JP 63335309 A JP63335309 A JP 63335309A JP 33530988 A JP33530988 A JP 33530988A JP H0831323 B2 JPH0831323 B2 JP H0831323B2
- Authority
- JP
- Japan
- Prior art keywords
- separator
- electrolyte
- electrode
- fuel cell
- seal portion
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Fuel Cell (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は溶融炭酸塩型燃料電池に係り、特にセパレー
タ内部の腐食防止に好適な燃料電池の構造に関する。The present invention relates to a molten carbonate fuel cell, and more particularly to a fuel cell structure suitable for preventing corrosion inside a separator.
従来の溶融炭酸塩型燃料電池は、特開昭60−91567号
公報に記載のように、セパレータ、電極、電解質板から
成り、電解質板の外周部を高密度セラミック枠で取囲む
ことにより電解質の外周部からのリークを防止し、電解
質板の電解質保持能力を高める構造となっていた。A conventional molten carbonate fuel cell is composed of a separator, an electrode, and an electrolyte plate, as described in JP-A-60-91567, and the electrolyte is formed by surrounding the outer periphery of the electrolyte plate with a high-density ceramic frame. The structure is such that leakage from the outer peripheral portion is prevented and the electrolyte retaining ability of the electrolyte plate is enhanced.
上記従来技術は、電解質の外部流出を防止するもので
あるが、電極端部が当接するセパレータとの境界から電
解質がセパレータ内部へ侵入する点について配慮がされ
ておらず、これによるセパレータ内部腐蝕が問題となっ
ている。The above-mentioned conventional technology is intended to prevent the outflow of the electrolyte to the outside, but no consideration is given to the point that the electrolyte enters the inside of the separator from the boundary with the separator with which the electrode end portion abuts. It's a problem.
本発明の目的は、電解質板と当接するセパレータに電
解質板から直接電解質が侵入することを妨げ、かつ、セ
パレータと電極端部の境界から電解質が侵入しても、該
電解質を境界の近傍に保持し、セパレータ内部への侵入
を阻止して、セパレータ内部の腐食を防止する構造とし
た溶融炭酸塩型燃料電池を提供することにある。The purpose of the present invention is to prevent the electrolyte from directly entering the separator in contact with the electrolyte plate from the electrolyte plate, and even if the electrolyte enters from the boundary between the separator and the electrode end, keep the electrolyte near the boundary. Then, it is to provide a molten carbonate fuel cell having a structure that prevents the inside of the separator from entering and prevents the inside of the separator from corroding.
上記目的は、セパレータ１、電極２、電解質板３より
なる溶融炭酸塩型燃料電池において、電解質板３および
電極２と当接するセパレータの当接面にセパレータシー
ル部を設けること、該セパレータシール部は電解質板３
と当接する面の上段シール部４と、電極２と当接する面
である下段シール部５の２段シール部から構成し、上段
シール部４と下段シール部５との間の電極２端部直下全
周のセパレータシール部に電解質保持溝６を設けること
により達成される。In the molten carbonate fuel cell including the separator 1, the electrode 2 and the electrolyte plate 3, the above object is to provide a separator seal part on the contact surface of the separator that contacts the electrolyte plate 3 and the electrode 2, and the separator seal part is Electrolyte plate 3
The upper seal portion 4 that comes into contact with the electrode 2 and the lower seal portion 5 that comes into contact with the electrode 2 are formed into a two-stage seal portion. This is achieved by providing the electrolyte retaining groove 6 in the separator seal portion on the entire circumference.
電解質板３を押えるセパレータシール部を電解質板３
と当接する面である上段シール部４と電極２と当接する
面である下部シール部５の２段とし、上段シール部４と
下段シール部５の間の電極２端部直下の全周に電解質保
持溝６を設けるため、セパレータシール部を伝わり電極
２端部の間より流入する電解質は電解質保持溝６に保持
されるので、セパレータ１内部への電解質が侵入するこ
となく、セパレータ１内部の腐食が防止できる。The separator seal portion that holds down the electrolyte plate 3 is attached to the electrolyte plate 3
The upper seal portion 4 that is in contact with the electrode 2 and the lower seal portion 5 that is in contact with the electrode 2 have two stages, and the electrolyte is provided around the entire circumference immediately below the end of the electrode 2 between the upper seal portion 4 and the lower seal portion 5. Since the holding groove 6 is provided, the electrolyte flowing through the separator seal portion and flowing between the end portions of the electrode 2 is held in the electrolyte holding groove 6, so that the electrolyte does not enter the inside of the separator 1 and the inside of the separator 1 is corroded. Can be prevented.
以下、本発明の一実施例を第１図により説明する。第
１図に、２段シール部と電解質保持溝を備えた溶融炭酸
源型燃料電池の基本単位の構造を示す。An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows the structure of a basic unit of a molten carbon source fuel cell having a two-stage seal portion and an electrolyte holding groove.
第１図において、電解質板３の上下に各電極2,2が配
設され、更にその上下にセパレータ1,1が設けられて基
本単位を構成している。In FIG. 1, electrodes 2 and 2 are arranged above and below an electrolyte plate 3, and separators 1 and 1 are arranged above and below the electrolyte plate 3 to form a basic unit.
直接に電解質板３と当接するセパレータ１の当接面に
は上段シール部４が設けられ、電極２と当接するセパレ
ータ１の当接面には下段シール部５が設けられ、下段シ
ール部５は電極２を押えている。An upper seal portion 4 is provided on the contact surface of the separator 1 that directly contacts the electrolyte plate 3, and a lower seal portion 5 is provided on the contact surface of the separator 1 that contacts the electrode 2. Holding the electrode 2.
上段シール部４と下段シール部５の間の電極２の端部
直下の全周にはセパレータ１に凹入する電解質保持溝６
が形成されている。An electrolyte holding groove 6 recessed in the separator 1 is provided around the entire circumference immediately below the end of the electrode 2 between the upper seal portion 4 and the lower seal portion 5.
Are formed.
電池運転中、電解質は上段シール部４に沿って電極２
の端部に流れ、ここからセパレータ１内部に入り込もう
とするが、電極２の端部の直下には電解質保持溝６があ
るため、そこに保持される。また、下段シール部５は電
極２を介して電解質板３と接しているので、この部分か
ら電解質がセパレータ１の内部に侵入することもない。During operation of the battery, the electrolyte flows along the upper seal 4 to the electrode 2
Of the electrolyte holding groove 6 immediately below the end portion of the electrode 2, so that it is held there. Further, since the lower seal portion 5 is in contact with the electrolyte plate 3 via the electrode 2, the electrolyte does not enter the inside of the separator 1 from this portion.
本実施例によれば、セパレータシール部に設けてあり
電解質保持溝６に電解質を保持することにより、セパレ
ータ内部への電解質の侵入を防止する効果があり、セパ
レータ内部の腐食が防止でき長期に亘り電池性能を劣化
することなく維持できる。According to this embodiment, by holding the electrolyte in the electrolyte holding groove 6 provided in the separator seal portion, there is an effect of preventing the invasion of the electrolyte into the inside of the separator, and it is possible to prevent the inside of the separator from being corroded. Battery performance can be maintained without deterioration.
本発明によれば、運転中に電解質板から流出した電解
質がセパレータ内部に入り込もうとするが、この電解質
を電解質保持溝に保持することができ、更に電極を下段
シール部で押えているので、電解質がセパレータ内部へ
侵入することがないので、セパレータ内部の腐食を防止
でき、電池性能を長時間維持できる効果がある。According to the present invention, the electrolyte flowing out from the electrolyte plate during operation tries to enter the inside of the separator, but this electrolyte can be held in the electrolyte holding groove, and since the electrode is pressed by the lower seal portion, the electrolyte is Since it does not enter the inside of the separator, there is an effect that the inside of the separator can be prevented from being corroded and the battery performance can be maintained for a long time.
第１図は、本発明の一実施例の２段シール部からなるセ
パレータシール部に電解質保持溝を設けた溶融炭酸塩型
燃料電池の基本単位の断面図である。 １……セパレータ、４……上段シール部 ２……電極、５……下段シール部 ３……電解質板、６……電解質保持溝FIG. 1 is a cross-sectional view of a basic unit of a molten carbonate fuel cell in which an electrolyte holding groove is provided in a separator seal portion composed of a two-stage seal portion according to an embodiment of the present invention. 1 ... Separator, 4 ... Upper seal part 2 ... Electrode, 5 ... Lower seal part 3 ... Electrolyte plate, 6 ... Electrolyte holding groove
Claims (1)
炭酸塩型燃料電池において、電解質板および電極とセパ
レータの当接面にセパレータシール部を設け、該セパレ
ータシール部は、電解質板と当接する面の上段シール部
および電極と当接する面の下段シール部の２段シール部
となし、上段シール部と下段シール部との間の電極端部
直下全周のセパレータシール部に電解質保持溝を設けて
いることを特徴とする溶融炭酸塩型燃料電池。1. A molten carbonate fuel cell comprising a separator, an electrode and an electrolyte plate, wherein a separator seal portion is provided on a contact surface between the electrolyte plate and the electrode and the separator, and the separator seal portion is a surface contacting with the electrolyte plate. The upper seal part and the lower seal part of the surface contacting with the electrode form a two-stage seal part, and an electrolyte holding groove is provided in the separator seal part around the entire circumference immediately below the electrode end between the upper seal part and the lower seal part. A molten carbonate fuel cell characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63335309A JPH0831323B2 (en) | 1988-12-29 | 1988-12-29 | Molten carbonate fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63335309A JPH0831323B2 (en) | 1988-12-29 | 1988-12-29 | Molten carbonate fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02181368A JPH02181368A (en) | 1990-07-16 |
| JPH0831323B2 true JPH0831323B2 (en) | 1996-03-27 |
Family
ID=18287080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63335309A Expired - Fee Related JPH0831323B2 (en) | 1988-12-29 | 1988-12-29 | Molten carbonate fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0831323B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58155668A (en) * | 1982-03-12 | 1983-09-16 | Hitachi Ltd | Molten-salt fuel cell |
-
1988
- 1988-12-29 JP JP63335309A patent/JPH0831323B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02181368A (en) | 1990-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |