JPH0576747B2 - - Google Patents
Info
- Publication number
- JPH0576747B2 JPH0576747B2 JP58060384A JP6038483A JPH0576747B2 JP H0576747 B2 JPH0576747 B2 JP H0576747B2 JP 58060384 A JP58060384 A JP 58060384A JP 6038483 A JP6038483 A JP 6038483A JP H0576747 B2 JPH0576747 B2 JP H0576747B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- electrode
- plate
- reaction gas
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 47
- 239000012495 reaction gas Substances 0.000 claims description 21
- 238000000926 separation method Methods 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
- H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
-
- 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)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明はマトリツクス型燃料電池、特に電池構
成材の積層構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a matrix fuel cell, and particularly to a laminated structure of cell constituent materials.
(ロ) 従来技術
一般に単位セル間に介在する炭素質ガス分離板
１は、第１図イ，ロの表裏各平面間に示すよう
に、表面イにはその各反応ガス流路側縁のシール
部２，２間に多数のカソードガス供給溝３を配列
し、裏面には前記反応ガス流路側縁のシール部２
と交錯する方向の各反応ガス流路側縁のシール部
４，４間にアノードガス供給溝５を配列した構成
であり、単位セル６を構成するカソードガス極Ｐ
及びアノードガス極Ｎは、前記ガス分離板１のカ
ソードガス供給溝３及びアノードガス供給溝４を
夫々覆うよう各反応ガス流路側縁のシール部２，
２間及び４，４間に嵌着される。(B) Prior art In general, the carbonaceous gas separation plate 1 interposed between unit cells has a seal portion on the side edge of each reaction gas flow path on the surface A, as shown between the front and back planes of FIG. 1A and B. A large number of cathode gas supply grooves 3 are arranged between 2 and 2, and a seal part 2 at the side edge of the reaction gas flow path is provided on the back surface.
The anode gas supply groove 5 is arranged between the seal parts 4, 4 on the side edges of each reaction gas flow path in the direction intersecting with the cathode gas electrode P constituting the unit cell 6.
The anode gas electrode N includes a seal portion 2 at the side edge of each reaction gas flow path so as to cover the cathode gas supply groove 3 and the anode gas supply groove 4 of the gas separation plate 1, respectively.
It is fitted between 2 and 4,4.
電池スタツクＳに組立てる場合、これら各ガス
分離板１に取付けたカソードガス極Ｐとアノード
ガス極Ｎとの間に夫々マトリツクスＭを挾んでガ
ス分離板を積重するが、各反応ガス供給溝３，５
の出入口側に対応する各極Ｐ，Ｎの両側辺部分
は、夫々マトリツクスＭを介して隣接ガス分離板
のシール面４及び２と対向し、対極となる極板部
分が存在しないため、電池反応に関与しないこと
になる。各極Ｐ，Ｎには触媒として高価な白金が
使用されているが、このような電池反応に関与し
ない極板部分の触媒は無駄であつてそれだけ高価
となる。 When assembled into a battery stack S, the gas separation plates are stacked with a matrix M sandwiched between the cathode gas electrode P and the anode gas electrode N attached to each of the gas separation plates 1. ,5
The side portions of each electrode P and N corresponding to the inlet/outlet side of the cell face the sealing surfaces 4 and 2 of the adjacent gas separation plates via the matrix M, respectively, and since there is no electrode plate portion serving as a counter electrode, the battery reaction does not occur. will not be involved. Expensive platinum is used as a catalyst in each of the electrodes P and N, but the catalyst in the electrode plate portions that do not take part in the cell reaction is wasteful and expensive.
又、各極Ｐ，Ｎは多孔質且薄質で強度的に弱い
ため、前記両側辺部分が反応ガス供給溝３，５の
出入口部分に入り込みやすく、反応ガスの円滑な
流通を損つて極板面における反応の不均一をもた
らすなどの問題があつた。 In addition, since each pole P, N is porous, thin, and weak in strength, the side portions on both sides easily enter the entrance and exit portions of the reaction gas supply grooves 3, 5, impairing the smooth flow of the reaction gas, and causing the electrode plates to There were problems such as non-uniform reaction on the surface.
(ハ) 発明の目的
本発明の目的は前述の問題点を解消し、電池性
能を損うことなく触媒量の低減を図ると共に反応
ガス供給溝の出入口部分における目づまりを防止
することである。(c) Object of the Invention The object of the present invention is to solve the above-mentioned problems, to reduce the amount of catalyst without impairing cell performance, and to prevent clogging at the entrance and exit portion of the reaction gas supply groove.
(ニ) 発明の構成
本発明は各ガス極における反応ガス供給溝の出
入口部に対応する両側辺部分をその対極を取付け
たガス分離板の反応ガス流路側縁のシール部の巾
に亘つて欠除させ、この部分を帯状剛性絶縁薄板
で置換せしたものである。(d) Structure of the Invention The present invention is characterized in that the side portions of each gas electrode corresponding to the inlet and outlet portions of the reaction gas supply grooves are cut out over the width of the seal portion of the side edge of the reaction gas flow path of the gas separation plate to which the opposite electrode is attached. This part was replaced with a strip-shaped rigid insulating thin plate.
(ホ) 実施例
本発明はカソードガス極Ｐ及びアノードガス極
Ｎの各ガス供給溝３及び５の出入口部を覆う両側
辺部分、云いかえればマトリツクスＭを介してガ
ス分離板１の反応ガス流路側縁のシール部４（カ
ソードガス極の場合）及び２（アノードガス極の
場合）と対向する両側辺部分を欠除し、この欠除
部分を帯状剛性絶縁薄板７Ｐ及び７Ｎで構成した
ものである。(E) Embodiment The present invention relates to the side portions covering the inlet and outlet portions of the respective gas supply grooves 3 and 5 of the cathode gas electrode P and anode gas electrode N, in other words, the reactive gas flow of the gas separation plate 1 via the matrix M. The side portions on both sides facing the roadside edge seal portions 4 (in the case of cathode gas electrodes) and 2 (in the case of anode gas electrodes) are removed, and these removed portions are constructed with strip-shaped rigid insulating thin plates 7P and 7N. be.
これら絶縁薄板７は、いずれも厚み約0.4mm巾
約10mmの炭素板の全面に周知の方法でシリコンカ
ーバイトSiCのコーテイングを施して絶縁性を付
与した。この絶縁薄板７は耐熱耐酸性があればよ
く、例えばセラミツク板を用いてもよい。 Each of these thin insulating plates 7 is a carbon plate with a thickness of about 0.4 mm and a width of about 10 mm, and its entire surface is coated with silicon carbide SiC by a well-known method to impart insulation properties. This insulating thin plate 7 only needs to be heat resistant and acid resistant, and for example, a ceramic plate may be used.
各ガス極Ｐ，Ｎは、夫々対応ガス供給溝３，５
と直交する一方の両側辺部分を従来極の場合に比
し夫々約10mm短くし、他方の両側辺を従来と同様
ガス分離板１の各反応ガス流路側縁のシール部
４，４間及び２，２間に嵌め込むが、この場合帯
状剛性絶縁薄板７Ｐ，７Ｎも夫々対応ガス極Ｐ，
Ｎの前記一方の両側辺に連設して対応ガス供給溝
３，５を覆うよう各反応ガス流路側縁のシール部
間に嵌込まれる。 Each gas electrode P, N has a corresponding gas supply groove 3, 5, respectively.
The side portions of one side perpendicular to the electrode are made approximately 10 mm shorter than those of the conventional electrode, and the side portions of the other side are made similar to the conventional electrode between the seal portions 4 and 4 of the side edges of each reaction gas flow path of the gas separation plate 1 and between the seal portions 4 and 2 , 2, but in this case, the strip-shaped rigid insulating thin plates 7P and 7N are also fitted between the corresponding gas electrodes P, 2, respectively.
It is fitted between the seal portions on the side edges of each reaction gas flow path so as to be connected to both sides of the reactant gas flow path so as to cover the corresponding gas supply grooves 3 and 5.
電池スタツクＳの締付時、隣接ガス分離板の各
反応ガス流路側縁のシール部４及び２とガス供給
溝３及び５の各面との間に、夫々マトリツクスＭ
と帯状剛性絶縁薄板７Ｐ又は７Ｎが夫々介在する
ことになる。尚各反応ガス流路側縁のシール部に
は第３図に示すようフツ素樹脂薄板よりなるシム
８が設けられる。 When the battery stack S is tightened, a matrix M is inserted between the seal portions 4 and 2 at the side edges of each reaction gas flow path of the adjacent gas separation plate and each surface of the gas supply grooves 3 and 5, respectively.
and a band-shaped rigid insulating thin plate 7P or 7N, respectively. As shown in FIG. 3, a shim 8 made of a thin fluororesin plate is provided at the seal portion at the side edge of each reaction gas flow path.
(ヘ) 発明の効果
本発明によればマトリツクスで隔離されたアノ
ードカソード各ガス極の対極の存在しない従つて
電池反応に関与しない各両側辺部分を帯状剛性絶
縁薄板で構成したので、極板の有効作用面積に影
響を及ぼすことなく極板寸法を小さくすることが
可能となり、それだけ触媒量を減少（約15％）す
ることができる。(F) Effects of the Invention According to the present invention, each of the side portions of the anode and cathode gas electrodes separated by a matrix, where no counter electrode exists and therefore does not participate in the cell reaction, is constructed of strip-shaped rigid insulating thin plates. It is possible to reduce the size of the electrode plate without affecting the effective working area, and the amount of catalyst can be reduced (about 15%) accordingly.
又極板に比し強度の大きい帯状剛性絶縁薄板が
対応反応ガス供給溝の出入口部分を覆うと共にう
マトリツクスを介して反応ガス流路側縁のシール
部と対向しているので、従来のように極板両側辺
がガス溝に入り込んでガス流通を損うことなく、
極板全面に亘つて円滑にガス供給が行はれると共
に、隣接ガス分離板間のシール性を安定化してガ
ス漏れを防止することができるなどのすぐれた効
果を発揮する。 In addition, the strip-shaped rigid insulating thin plate, which is stronger than the electrode plate, covers the inlet and outlet portions of the corresponding reaction gas supply grooves and faces the seal portion on the side edge of the reaction gas flow path through the matrix, so that the polar Both sides of the plate will not enter the gas groove and impair gas flow.
This provides excellent effects such as smooth gas supply over the entire surface of the electrode plates, as well as the ability to stabilize the sealing between adjacent gas separation plates and prevent gas leakage.
第１図イ，ロはガス分離板の表裏各面を示す平
面図、第２図は本発明による電池スタツクの要部
斜面図、第３図は第２図のＸ−Ｘ線による断面図
である。
Ｓ……電池スタツク、Ｐ，Ｎ……アノード、カ
ソード各ガス極、Ｍ……マトリツクス、６……単
位セル、１……ガス分離板、２，４……各反応ガ
ス流路側縁のシール部、３，５……反応ガス供給
溝、７，７Ｐ，７Ｎ……帯状剛性絶縁薄板。
1A and 1B are plan views showing the front and back sides of the gas separation plate, FIG. 2 is an oblique view of the main part of the battery stack according to the present invention, and FIG. be. S...Battery stack, P, N...Anode and cathode gas electrodes, M...Matrix, 6...Unit cell, 1...Gas separation plate, 2, 4...Seal parts on the side edges of each reaction gas flow path , 3, 5... Reaction gas supply groove, 7, 7P, 7N... Band-shaped rigid insulating thin plate.
Claims (1)
路側縁のシール部と各反応ガス供給溝とを有する
ガス分離板、前記各反応ガス流路側縁のシール部
間に嵌合したアノード、カソード各ガス極及び前
記ガス極間に介在するマトリツクスを備え、前記
各ガス極における対応ガス供給溝出入口部を覆う
両側辺が所定巾に亘つて欠除され、この欠除部分
を帯状剛性絶縁薄板で構成せしめたことを特徴と
する燃料電池スタツク。 ２ 前記所定巾は、各ガス極の対極を嵌合した前
記ガス分離板の各反応ガス流路側縁のシール部の
巾に等しいことを特徴とする特許請求の範囲第１
項記載の燃料電池スタツク。 ３ 前記帯状剛性絶縁薄板は、シリコンカーバイ
ト被膜を施した炭素板もしくはセラミツク板であ
ることを特徴とする特許請求の範囲第１項記載の
燃料電池スタツク。[Scope of Claims] 1. A gas separation plate having seal portions on the side edges of each reaction gas flow path and respective reaction gas supply grooves in mutually intersecting directions on each front and back surface, and between the seal portions on the side edges of each of the reaction gas flow paths. anode and cathode gas electrodes fitted into the gas electrodes, and a matrix interposed between the gas electrodes, each side of each gas electrode covering the corresponding gas supply groove inlet/outlet portion is cut out over a predetermined width; A fuel cell stack characterized in that a portion thereof is composed of a strip-shaped rigid insulating thin plate. 2. Claim 1, characterized in that the predetermined width is equal to the width of a seal portion on a side edge of each reaction gas flow path of the gas separation plate into which a counter electrode of each gas electrode is fitted.
The fuel cell stack described in Section 1. 3. The fuel cell stack according to claim 1, wherein the strip-shaped rigid insulating thin plate is a carbon plate or a ceramic plate coated with silicon carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58060384A JPS59186271A (en) | 1983-04-05 | 1983-04-05 | Stack for fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58060384A JPS59186271A (en) | 1983-04-05 | 1983-04-05 | Stack for fuel battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59186271A JPS59186271A (en) | 1984-10-23 |
| JPH0576747B2 true JPH0576747B2 (en) | 1993-10-25 |
Family
ID=13140596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58060384A Granted JPS59186271A (en) | 1983-04-05 | 1983-04-05 | Stack for fuel battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59186271A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151161A (en) * | 1987-12-08 | 1989-06-13 | Mitsubishi Electric Corp | Fuel cell |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57185676A (en) * | 1981-05-09 | 1982-11-15 | Mitsubishi Electric Corp | Layer-built fuel cell |
| JPS5813671B2 (en) * | 1979-10-23 | 1983-03-15 | 旭化成株式会社 | Method for producing animal hair-like fibers |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813671U (en) * | 1981-07-17 | 1983-01-28 | 三洋電機株式会社 | Matrix fuel cell |
-
1983
- 1983-04-05 JP JP58060384A patent/JPS59186271A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5813671B2 (en) * | 1979-10-23 | 1983-03-15 | 旭化成株式会社 | Method for producing animal hair-like fibers |
| JPS57185676A (en) * | 1981-05-09 | 1982-11-15 | Mitsubishi Electric Corp | Layer-built fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59186271A (en) | 1984-10-23 |
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