JPH07183033A - Plate of phosphoric acid fuel cell - Google Patents
Plate of phosphoric acid fuel cellInfo
- Publication number
- JPH07183033A JPH07183033A JP5345570A JP34557093A JPH07183033A JP H07183033 A JPH07183033 A JP H07183033A JP 5345570 A JP5345570 A JP 5345570A JP 34557093 A JP34557093 A JP 34557093A JP H07183033 A JPH07183033 A JP H07183033A
- Authority
- JP
- Japan
- Prior art keywords
- electrode plate
- plate
- phosphoric acid
- fuel cell
- anode electrode
- 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
-
- 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
- Inert Electrodes (AREA)
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、リン酸形燃料電池に用
いる電極板に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode plate used in a phosphoric acid fuel cell.
【０００２】[0002]
【従来の技術】周知のように、石炭、石油、天然ガスな
どの燃料中の水素と酸素とから直接電気エネルギーを得
る装置として燃料電池がある。この燃料電池は、通常、
電解質を保持するマトリックスを挟んで一対の多孔質電
極を配置すると共に、一方の電極の背面に燃料ガスを流
通して接触させると共に、他方の電極の背面に空気等の
酸化剤ガスを流通して接触させて、このときに起こる電
気化学反応を利用して、上記電極間から電気エネルギー
を取り出すことができるものである。2. Description of the Related Art As is well known, there is a fuel cell as a device for directly obtaining electric energy from hydrogen and oxygen in fuels such as coal, oil and natural gas. This fuel cell is usually
While arranging a pair of porous electrodes sandwiching the matrix holding the electrolyte, the fuel gas is circulated and brought into contact with the back surface of one electrode, and the oxidant gas such as air is circulated on the back surface of the other electrode. By bringing them into contact with each other, electric energy can be taken out from between the electrodes by utilizing an electrochemical reaction occurring at this time.
【０００３】また、電解質としては、溶融炭酸塩、アル
カリ溶液、酸性溶液、固体高分子、固体酸化物などがあ
るが、リン酸を用いたリン酸形燃料電池が実用化に向け
特に開発が進んでいる。As the electrolyte, there are molten carbonate, alkaline solution, acidic solution, solid polymer, solid oxide, and the like, and phosphoric acid fuel cells using phosphoric acid are particularly developed for practical use. I'm out.
【０００４】図５は、この種の従来のリン酸形燃料電池
の構成を示す一例の部分断面図である。FIG. 5 is a partial sectional view showing an example of the structure of a conventional phosphoric acid fuel cell of this type.
【０００５】図において、１は積層セルであり、空気の
流通路および水素の流通路を有する一対のガス拡散電極
を保持するマトリックスを配して成る単位セルを複数個
積層して形成され、その上下を集電板２で挟み込まれ
る。In the figure, reference numeral 1 is a laminated cell, which is formed by laminating a plurality of unit cells each having a matrix holding a pair of gas diffusion electrodes having an air flow passage and a hydrogen flow passage, The upper and lower sides are sandwiched by current collector plates 2.
【０００６】この積層セル１の側面には、空気または水
素を供給および排気するためのマニホールド４とフッ素
ゴム系の成形パッキング５を配置すると共に、積層セル
１と成形パッキング５の間にフッ素樹脂系のシール材６
を介在させて固着し、積層セル１の各セルに一括して酸
化剤および燃料を供給、排気するように構成している。On the side surface of the laminated cell 1, a manifold 4 for supplying and exhausting air or hydrogen and a fluororubber-based molding packing 5 are arranged, and a fluororesin-based resin is placed between the lamination cell 1 and the molding packing 5. Seal material 6
And the oxidizer and the fuel are collectively supplied to and exhausted from each cell of the laminated cell 1.
【０００７】また、起動時には室温から動作温度まで積
層セル１を加熱し、運転時に余剰熱を除去・冷却して一
定温度に維持する温度調節体である冷却板７を積層セル
１の数セル毎に挿入・配置する構成となっている。In addition, at the time of start-up, the laminated cell 1 is heated from room temperature to the operating temperature, and at the time of operation, the cooling plate 7 as a temperature control body for removing and cooling the excess heat to maintain a constant temperature is provided for every several cells of the laminated cell 1. It is configured to be inserted and placed in.
【０００８】ところで、上記したリン酸形燃料電池の各
セルである電極板は次のように製作される。By the way, the electrode plate which is each cell of the above-mentioned phosphoric acid fuel cell is manufactured as follows.
【０００９】まず、電極板の基板には、親水処理を施し
た多孔質な炭素板が使用される。この基板に触媒層、エ
ッジシール、マトリックス層を塗布あるいは含浸させて
施す。この基板上に塗布した層は、１００〜２００μｍ
と薄膜で、かつ、アノード電極板とカソード電極板は異
なるが、これらの電極板側面から見ても区別はつかな
い。また、基板自体あるいはマトリックス層塗布面も同
形・同サイズであり外見上の識別が付かない。First, a porous carbon plate subjected to a hydrophilic treatment is used as the electrode plate substrate. The substrate is coated with or impregnated with a catalyst layer, an edge seal, and a matrix layer. The layer applied on this substrate has a thickness of 100 to 200 μm.
Although the anode electrode plate and the cathode electrode plate are different from each other, they are indistinguishable from the side of these electrode plates. Further, the substrate itself or the surface coated with the matrix layer has the same shape and the same size, so that it cannot be visually identified.
【００１０】[0010]
【発明が解決しようとする課題】ところで、上述のよう
なリン酸形燃料電池の電極板においては、アノード電極
板とカソード電極板は同形・同サイズであるので、これ
を取り違えて積層してしまうおそれがあるという問題が
ある。By the way, in the above-mentioned phosphoric acid fuel cell electrode plate, since the anode electrode plate and the cathode electrode plate have the same shape and the same size, they are erroneously stacked. There is a problem of fear.
【００１１】すなわち、積層セル１の組立の途中に、ア
ノード電極板とカソード電極板の区別が付かなくなると
いう問題があり、アノード電極板とカソード電極板を取
り違えた単セルを含む積層セル１の電池は、所定の電圧
特性が得られず、このようなアノード電極板とカソード
電極板を取り違えたセルを含む電池を一度運転すると、
電池特性が非常に低下し、積層し直しても特性が所定値
まで復帰することができないという問題がある。That is, there is a problem that the anode electrode plate and the cathode electrode plate cannot be distinguished during the assembly of the laminated cell 1, and the battery of the laminated cell 1 including a single cell in which the anode electrode plate and the cathode electrode plate are mixed Does not obtain the predetermined voltage characteristics, and once the battery including the cells in which the anode electrode plate and the cathode electrode plate are confused is operated,
There is a problem that the battery characteristics are extremely deteriorated and the characteristics cannot be restored to a predetermined value even if they are stacked again.
【００１２】このため従来電極板の製作途中でアノード
電極板とカソード電極板の区別が付かなくなった電極板
は、その時点で廃棄しており、大変歩留まりが悪いとい
う問題があった。For this reason, there is a problem that the electrode plate whose anode electrode plate and cathode electrode plate cannot be distinguished from each other during the manufacture of the conventional electrode plate is discarded at that time, resulting in a very low yield.
【００１３】そこで、本発明は、上記のような課題を解
決するためになされたもので、電極板の製作過程での歩
留まりを向上させ、かつ、信頼性の高いリン酸形燃料電
池の電極板を提供することを目的とする。Therefore, the present invention has been made to solve the above problems, and improves the yield in the manufacturing process of the electrode plate and has a high reliability in the electrode plate of the phosphoric acid fuel cell. The purpose is to provide.
【００１４】[0014]
【課題を解決するための手段】この発明は、電解質であ
るリン酸を保持するマトリックス層を一対のアノード電
極板とカソード電極板で挟んで、単位セルを形成し、こ
の単位セルを複数個積層した数セル毎に冷却板を挿入配
置して積層セルとしての電極本体を形成し、この電池本
体の側面に前記アノード電極板とカソード電極板へ燃料
および酸素を各々供給および排出するマニホールドを配
設し、かつ、マニホールドと電池本体との間をシールし
て構成されるリン酸形燃料電池の電極板において、アノ
ード電極板とカソード電極板とが互いに相違する外観を
有するようにしたものである。According to the present invention, a matrix layer for holding phosphoric acid as an electrolyte is sandwiched by a pair of an anode electrode plate and a cathode electrode plate to form a unit cell, and a plurality of unit cells are laminated. A cooling plate is inserted into each of several cells to form an electrode body as a laminated cell, and a manifold for supplying and discharging fuel and oxygen to and from the anode electrode plate and the cathode electrode plate is arranged on the side surface of the battery body. In addition, in the electrode plate of the phosphoric acid fuel cell configured by sealing the space between the manifold and the cell body, the anode electrode plate and the cathode electrode plate have different appearances.
【００１５】[0015]
【作用】上記構成により、アノード電極板とカソード電
極板とを異なる外観としたため簡単に両者を識別でき、
製作工程で両者を取り違えることを解消できる。従っ
て、信頼性の高いリン酸形燃料電池の電極板となり、電
極板作成過程での歩留まりが減少して歩留りを向上させ
ることができる。With the above structure, since the anode electrode plate and the cathode electrode plate have different appearances, they can be easily distinguished from each other.
It is possible to eliminate confusing the two in the manufacturing process. Therefore, it becomes a highly reliable electrode plate for a phosphoric acid fuel cell, and the yield in the process of producing the electrode plate is reduced, and the yield can be improved.
【００１６】[0016]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１７】図１は、本発明の第１実施例を示すリン酸
形燃料電池の電極板の平面図である。図１において、図
５と同一部分は、同一符号および相当部分を示してい
る。FIG. 1 is a plan view of an electrode plate of a phosphoric acid fuel cell showing a first embodiment of the present invention. In FIG. 1, the same parts as those in FIG. 5 have the same reference numerals and corresponding parts.
【００１８】図示するようにアノード電極板８は、略正
方形の板体で形成され対角線上の一対の角部を３０°の
角度で切断してコーナカット部８ａ，８ｂを形成し、コ
ーナカット部８ａ，８ｂの切断部はマニホールド４の外
部に位置するような寸法としている。As shown in the figure, the anode electrode plate 8 is formed of a substantially square plate body, and a pair of diagonal corners are cut at an angle of 30 ° to form corner cut portions 8a and 8b. The cut portions 8a and 8b are dimensioned so as to be located outside the manifold 4.
【００１９】一方、カソード電極板９は、アノード電極
板８と同形状の板体で形成され対角線上の一対の角部を
３０°の角度で切断してコーナカット部９ａ，９ｂを形
成し、このコーナカット部９ａ，９ｂの切断部はマニホ
ールド４の外部に位置するような寸法としている。On the other hand, the cathode electrode plate 9 is formed of a plate having the same shape as the anode electrode plate 8, and a pair of diagonal corners are cut at an angle of 30 ° to form corner cut portions 9a, 9b. The cut portions of the corner cut portions 9a and 9b are dimensioned so as to be located outside the manifold 4.
【００２０】上記のような構成により、アノード電極板
とカソード電極板の表と裏は識別できるためアノード電
極板８とコーナカット部８ａ，８ｂとカソード電極板９
のコーナカット部９ａ，９ｂとの位置が相違する。従っ
て、アノード電極板８とカソード電極板９とを容易に識
別ができるようになる。With the above construction, the front and back of the anode electrode plate and the cathode electrode plate can be distinguished from each other, so that the anode electrode plate 8, the corner cut portions 8a and 8b, and the cathode electrode plate 9 can be distinguished.
The position is different from the corner cut portions 9a and 9b. Therefore, the anode electrode plate 8 and the cathode electrode plate 9 can be easily identified.
【００２１】このコーナ部の切断処理は、例えば、触媒
層塗布直後に行うことにより、その後の製作過程におい
てもアノード電極板８とカソード電極板９の識別ができ
るようになるため、歩留まりの向上を図ることができる
ようになる。The cutting of the corner portion can be performed, for example, immediately after the catalyst layer is applied, so that the anode electrode plate 8 and the cathode electrode plate 9 can be distinguished from each other in the subsequent manufacturing process, so that the yield is improved. You will be able to plan.
【００２２】なお、コーナカット部８ａ，８ｂ、コーナ
カット部９ａ，９ｂの切断角度は３０°に限る必要はな
く、アノード電極板８とカソード電極板９とが識別でき
ればよい。但し、図１において切断角度を４５°とする
とアノード電極板８とカソード電極板９とが同形状とな
るため両者を識別することができないから切断角度４５
°は避ける必要がある。The cutting angles of the corner cut portions 8a and 8b and the corner cut portions 9a and 9b are not limited to 30 °, and it is sufficient that the anode electrode plate 8 and the cathode electrode plate 9 can be distinguished from each other. However, in FIG. 1, when the cutting angle is 45 °, the anode electrode plate 8 and the cathode electrode plate 9 have the same shape, so that they cannot be distinguished from each other.
° should be avoided.
【００２３】次に、本発明の第２実施例を図２に基づい
て説明する。Next, a second embodiment of the present invention will be described with reference to FIG.
【００２４】図２において、アノード電極板８とカソー
ド電極板９とは、図１と同様に正方形の板体で、このア
ノード電極板８のいずれかの角部に４５°角度で切断し
てコーナカット部８ａを形成し、コーナカット部８ａの
切断部はマニホールド４の外部に位置するような寸法と
している。In FIG. 2, the anode electrode plate 8 and the cathode electrode plate 9 are square plate bodies as in FIG. 1, and the anode electrode plate 8 is cut at any one of the corners at a 45 ° angle. The cut portion 8a is formed, and the cut portion of the corner cut portion 8a is dimensioned so as to be located outside the manifold 4.
【００２５】一方、カソード電極板９はアノード電極板
８に対応する正方形の板体で角部を切断しないで正方形
とする。On the other hand, the cathode electrode plate 9 is a square plate body corresponding to the anode electrode plate 8 and has a square shape with its corners not cut.
【００２６】なお、アノード電極板８は、コーナカット
部８ａを形成しないで、代わりにカソード電極板９にコ
ーナカット部を形成しても同様に実施できる。The anode electrode plate 8 may be formed in the same manner without forming the corner cut portion 8a and instead forming the corner cut portion in the cathode electrode plate 9.
【００２７】このようにすれば、切断角度が４５°でも
アノード電極板８とカソード電極板９とを容易に識別す
ることができる。In this way, the anode electrode plate 8 and the cathode electrode plate 9 can be easily distinguished even if the cutting angle is 45 °.
【００２８】次に、本発明の第３実施例について図３を
参照して説明する。Next, a third embodiment of the present invention will be described with reference to FIG.
【００２９】図において、アノード電極板８は、気密性
を保つために、基板と一体となって製作されるエッジシ
ール部１０Ａの寸法をＬ１として製作するようにし、こ
れに対応するカソード電極板９はエッジシール部１０Ｂ
の寸法をＬ１と異なるＬ２として製作するようにしてい
る。In the figure, in order to maintain airtightness, the anode electrode plate 8 is manufactured so that the dimension of the edge seal portion 10A integrally manufactured with the substrate is L1, and the cathode electrode plate 9 corresponding thereto is manufactured. Is the edge seal part 10B
Is manufactured with L2 different from L1.
【００３０】この構成にすれば、アノード電極板８とカ
ソード電極板９のエッジシール部１０Ａ，１０Ｂの寸法
の相違から両者を容易に、かつ、確実に識別することが
できる。With this structure, the anode electrode plate 8 and the cathode electrode plate 9 can be easily and surely distinguished from each other due to the difference in size between the edge seal portions 10A and 10B.
【００３１】次に、本発明の第４実施例を図４を参照し
て説明する。Next, a fourth embodiment of the present invention will be described with reference to FIG.
【００３２】本実施例では、アノード電極板８のエッジ
シール部１０Ｃを枠体で形成したのに対し、カソード電
極板９のエッジシール部１０Ｂをエッジシール部１０Ｃ
の枠体に切欠けａを設けるようにしている。In the present embodiment, the edge seal portion 10C of the anode electrode plate 8 is formed of a frame, whereas the edge seal portion 10B of the cathode electrode plate 9 is formed by the edge seal portion 10C.
A notch a is provided in the frame body.
【００３３】このようにしても、シール機能を十分に満
足させ両者を容易に識別することができる。Even in this case, the sealing function can be sufficiently satisfied and the both can be easily distinguished.
【００３４】なお、第１乃至第４実施例では、アノード
電極板８とカソード電極板９を識別するための一例とし
て説明したが、本発明はこれに限ることなく両者を何ら
かの手段により識別できる外観であればよい。Although the first to fourth embodiments have been described as an example for identifying the anode electrode plate 8 and the cathode electrode plate 9, the present invention is not limited to this, and the appearance is such that they can be identified by some means. If
【００３５】[0035]
【発明の効果】以上説明したように本発明によれば、ア
ノード電極板とカソード電極板とを異なる外観としたた
め簡単に識別でき、信頼性の高いリン酸形燃料電池の電
極板を提供するばかりでなく、電極板作成過程での歩留
まりを向上させることができる。As described above, according to the present invention, since the anode electrode plate and the cathode electrode plate have different appearances, it is possible to easily identify and provide a highly reliable electrode plate for a phosphoric acid fuel cell. Not only that, the yield in the process of producing the electrode plate can be improved.
【図１】本発明の第１実施例を示すリン酸形燃料電池の
電極板の平面図である。FIG. 1 is a plan view of an electrode plate of a phosphoric acid fuel cell showing a first embodiment of the present invention.
【図２】本発明の第２実施例を示すリン酸形燃料電池の
電極板の平面図である。FIG. 2 is a plan view of an electrode plate of a phosphoric acid fuel cell showing a second embodiment of the present invention.
【図３】本発明の第３実施例を示すリン酸形燃料電池の
電極板の平面図である。FIG. 3 is a plan view of an electrode plate of a phosphoric acid fuel cell showing a third embodiment of the present invention.
【図４】本発明の第４実施例を示すリン酸形燃料電池の
電極板の平面図である。FIG. 4 is a plan view of an electrode plate of a phosphoric acid fuel cell showing a fourth embodiment of the present invention.
【図５】リン酸形燃料電池の部分断面図である。FIG. 5 is a partial cross-sectional view of a phosphoric acid fuel cell.
１ 積層セル ２ 集電板 ４ マニホールド ５ 成形パッキング ６ シール材 ７ 冷却板 ８ アノード電極板 ８ａ，８ｂ コーナカット部 ９ カソード電極板 ９ａ，９ｂ コーナカット部 １０Ａ，１０Ｂ，１０Ｃ エッジシール部 1 Laminated Cell 2 Current Collector Plate 4 Manifold 5 Molded Packing 6 Sealing Material 7 Cooling Plate 8 Anode Electrode Plate 8a, 8b Corner Cut Part 9 Cathode Electrode Plate 9a, 9b Corner Cut Part 10A, 10B, 10C Edge Seal Part
Claims (3)
クス層を一対のアノード電極板とカソード電極板で挟ん
で単位セルを形成し、この単位セルを複数個積層した数
セル毎に冷却板を挿入配置して積層セルとしての電極本
体を形成し、この電池本体の側面に前記アノード電極板
と前記カソード電極板へ燃料および酸素を各々供給およ
び排出するマニホールドを配設し、かつ、前記マニホー
ルドと前記電池本体との間をシールして構成されるリン
酸形燃料電池の電極板において、 前記アノード電極板と前記カソード電極板とが相違する
外観を有することを特徴とするリン酸形燃料電池の電極
板。1. A unit cell is formed by sandwiching a matrix layer that holds phosphoric acid, which is an electrolyte, between a pair of an anode electrode plate and a cathode electrode plate, and a cooling plate is inserted every several cells in which a plurality of the unit cells are laminated. An electrode body as a laminated cell is formed by arranging them, and a manifold for supplying and discharging fuel and oxygen to and from the anode electrode plate and the cathode electrode plate is arranged on the side surface of the battery body, and the manifold and the manifold are provided. An electrode plate for a phosphoric acid fuel cell, which is configured by sealing between a cell body and the anode body, wherein the anode electrode plate and the cathode electrode plate have different appearances. Board.
電極板の角部の少なくとも１か所を切断したことを特徴
とする請求項１記載のリン酸形燃料電池の電極板。2. The electrode plate for a phosphoric acid fuel cell according to claim 1, wherein at least one of corners of the anode electrode plate and the cathode electrode plate is cut.
電極板のエッジシール部の形状を相違するようにしたこ
とを特徴とする請求項１記載のリン酸形燃料電池の電極
板。3. The electrode plate for a phosphoric acid fuel cell according to claim 1, wherein the edge seal portions of the anode electrode plate and the cathode electrode plate have different shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345570A JPH07183033A (en) | 1993-12-22 | 1993-12-22 | Plate of phosphoric acid fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5345570A JPH07183033A (en) | 1993-12-22 | 1993-12-22 | Plate of phosphoric acid fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07183033A true JPH07183033A (en) | 1995-07-21 |
Family
ID=18377490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5345570A Pending JPH07183033A (en) | 1993-12-22 | 1993-12-22 | Plate of phosphoric acid fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07183033A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006210211A (en) * | 2005-01-31 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Solid polymer fuel cell |
| JP2007179809A (en) * | 2005-12-27 | 2007-07-12 | Japan Gore Tex Inc | Manufacturing method of membrane electrode assembly having identification mark, and solid polymer electrolyte fuel using it |
| US7309542B2 (en) | 2003-07-09 | 2007-12-18 | Honda Motor Co., Ltd. | Membrane electrode assembly and fuel cell |
| US7740667B2 (en) * | 2004-07-28 | 2010-06-22 | Samsung Sdi Co., Ltd. | Method of fabricating an electrode plate for rechargeable battery |
-
1993
- 1993-12-22 JP JP5345570A patent/JPH07183033A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7309542B2 (en) | 2003-07-09 | 2007-12-18 | Honda Motor Co., Ltd. | Membrane electrode assembly and fuel cell |
| US7740667B2 (en) * | 2004-07-28 | 2010-06-22 | Samsung Sdi Co., Ltd. | Method of fabricating an electrode plate for rechargeable battery |
| US7939197B2 (en) | 2004-07-28 | 2011-05-10 | Samsung Sdi Co., Ltd. | Electrode plate for rechargeable battery and method for fabricating the same |
| JP2006210211A (en) * | 2005-01-31 | 2006-08-10 | Matsushita Electric Ind Co Ltd | Solid polymer fuel cell |
| JP2007179809A (en) * | 2005-12-27 | 2007-07-12 | Japan Gore Tex Inc | Manufacturing method of membrane electrode assembly having identification mark, and solid polymer electrolyte fuel using it |
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