JPH065294A - Flat type solid electrolytic fuel cell - Google Patents
Flat type solid electrolytic fuel cellInfo
- Publication number
- JPH065294A JPH065294A JP4160860A JP16086092A JPH065294A JP H065294 A JPH065294 A JP H065294A JP 4160860 A JP4160860 A JP 4160860A JP 16086092 A JP16086092 A JP 16086092A JP H065294 A JPH065294 A JP H065294A
- Authority
- JP
- Japan
- Prior art keywords
- fuel cell
- metal
- layer
- type solid
- support layer
- 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.)
- Withdrawn
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
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/023—Porous and characterised by the material
- H01M8/0236—Glass; Ceramics; Cermets
-
- 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
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
- H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Fuel Cell (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は平板型固体電解質燃料電
池に関し、特に平板型固体電解質型、溶融炭酸塩型およ
びリン酸型燃料電池の燃料極側支持層に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat plate type solid electrolyte fuel cell, and more particularly to a fuel electrode side support layer of a flat plate type solid electrolyte type, molten carbonate type and phosphoric acid type fuel cell.
【０００２】[0002]
【従来の技術】従来の平板型固体電解質燃料電池の燃料
極側支持膜の要求条件として、還元性雰囲気に耐えるこ
と、電池運転温度９００〜１１００℃にて使用可能なこ
と及び運転温度において材料がもつ固有の熱膨張により
電池を構成する他の部材へ悪影響を与えないことという
条件があることから、発電層上の電極と同じ材質である
ＮｉＯ＋ＹＳＺ（イットリア安定化ジルコニア）のサー
メットを成形した支持材が使われてきた。2. Description of the Related Art Requirements for a fuel electrode side support membrane of a conventional flat plate solid oxide fuel cell are that it can withstand a reducing atmosphere, that it can be used at a cell operating temperature of 900 to 1100 ° C. Since there is a condition that it does not adversely affect other members constituting the battery due to its inherent thermal expansion, a support material formed by forming a cermet of NiO + YSZ (yttria-stabilized zirconia), which is the same material as the electrode on the power generation layer. Has been used.
【０００３】[0003]
【発明が解決しようとする課題】従来の固体電解質燃料
電池の支持層製作方法としては、材料に電極材と同じＮ
ｉＯ＋ＹＳＺサーメットを使用しているため、支持層と
して利用するまでに粉末の混合・混練→薄膜製作→波形
成型→焼成等の多くの工程を必要としている。このため
従来の支持層には下記のような問題点があった。 （１）支持層、成形体は焼成工程により支持層に含まれ
る結合剤等が分解しその後収縮が始まる。この収縮は原
料粉末の粒度、焼成セッタのすべり系数、焼成炉の温度
分布に影響されるため支持層の寸法精度にばらつきが発
生する。 （２）支持層はＮｉＯ＋ＹＳＺのサーメットからできて
いるため燃料電池の運転時に還元性雰囲気にさらされる
と、サーメットからＮｉに変わる。この時支持層に体積
変化が起こり他の膜に悪影響をおよぼす。As a conventional method for manufacturing a support layer for a solid oxide fuel cell, the same material as the electrode material, N, is used.
Since iO + YSZ cermet is used, many steps such as powder mixing / kneading → thin film production → corrugation → firing are required before it can be used as a support layer. Therefore, the conventional supporting layer has the following problems. (1) The binder and the like contained in the support layer are decomposed in the support layer and the molded body by the firing step, and then shrinkage starts. Since this shrinkage is affected by the particle size of the raw material powder, the sliding coefficient of the firing setter, and the temperature distribution of the firing furnace, the dimensional accuracy of the support layer varies. (2) Since the support layer is made of NiO + YSZ cermet, when exposed to a reducing atmosphere during operation of the fuel cell, the cermet changes to Ni. At this time, a volume change occurs in the support layer, which adversely affects other membranes.
【０００４】本発明は上記技術水準に鑑み、製作時の工
程を大幅に少なくでき、加工も容易で焼成等も不要なこ
とから寸法精度が高く、しかも還元性雰囲気にさらされ
ても体積変化もなく安定である支持層を有する平板型固
体電解質燃料電池を提供しようとするものである。In view of the above-mentioned state of the art, the present invention has a significantly reduced number of manufacturing steps, is easy to process and does not require firing, etc., and thus has high dimensional accuracy, and its volume changes even when exposed to a reducing atmosphere. An object of the present invention is to provide a flat-plate type solid electrolyte fuel cell having a stable support layer.
【０００５】[0005]
【課題を解決するための手段】本発明は発電層とインタ
コネクタ層と該両層の間に設けられた支持層からなる平
板型固体電解質燃料電池において、燃料通路側支持層と
して熱膨張により発生する伸びを吸収しうる形状の耐熱
温度９００〜１１００℃の金属を用いてなることを特徴
とする平板型固体電解質燃料電池である。DISCLOSURE OF THE INVENTION The present invention is a plate type solid electrolyte fuel cell comprising a power generation layer, an interconnector layer and a supporting layer provided between the two layers, and is generated by thermal expansion as a fuel passage side supporting layer. The flat plate type solid electrolyte fuel cell is characterized by using a metal having a heat resistant temperature of 900 to 1100 ° C. and having a shape capable of absorbing elongation.
【０００６】すなわち、本発明の平板型固体電解質燃料
電池の燃料極側支持層は支持層を構成する部材が燃料電
気の運転温度範囲９００℃〜１１００℃にて常用できる
金属（Ｃｒ，Ｓｉ，Ｓｍ，Ｓｃ，Ｗ，Ｔｉ，Ｆｅ，Ｎ
ｉ，Ｐｔ，Ｈｆ，Ｂｅ，Ｍｎ，Ｍｏ等からなる耐熱性金
属又は合金）からなるものであって、これらの金属を支
持層として用いることから燃料電池の運転温度９００℃
〜１１００℃の間で発生する金属の伸びを吸収できるよ
うに線径０．０５ｍｍ〜０．１ｍｍからなる４５°なな
め織りメッシュを金属成形コルゲータにて波形形状に成
形したもの、又はスリット加工を行った薄板を金属成形
コルゲータにて加工したもの等のように金属の伸びを吸
収する構造をもったものにしたものである。That is, in the fuel electrode side support layer of the flat plate type solid electrolyte fuel cell of the present invention, the members constituting the support layer are metals (Cr, Si, Sm) which can be commonly used in the operating temperature range of fuel electricity 900 ° C to 1100 ° C. , Sc, W, Ti, Fe, N
i, Pt, Hf, Be, Mn, Mo, etc., which is a heat-resistant metal or alloy), and these metals are used as a supporting layer, so that the operating temperature of the fuel cell is 900 ° C.
〜1100 ° C, a 45 ° slanted woven mesh with a wire diameter of 0.05 mm to 0.1 mm is formed into a corrugated shape with a metal forming corrugator so as to absorb the elongation of metal, or slit processing is performed. It has a structure that absorbs the elongation of metal, such as a thin plate processed by a metal forming corrugator.
【０００７】[0007]
【作用】サーメット支持層から金属支持層に変えること
により燃料電池運転時に体積変化に伴う応力をなくすこ
とができるようになり、金属を支持層に用いることによ
り従来の支持層製造工程に比べ工程を大幅に簡略化で
き、又寸法精度も従来に比べ大幅に改善される。また、
従来のＮｉＯとＹＳＺ粉末からなる支持層では供給され
る燃料ガスが２分され半分は有効に利用できなかったが
金属支持層を用いることにより形状を自由に加工できる
ことから燃料ガスを２分させずに有効に利用する構造を
採用できるようになった。[Function] By changing from the cermet support layer to the metal support layer, it becomes possible to eliminate the stress due to the volume change during the operation of the fuel cell. The simplification can be greatly simplified, and the dimensional accuracy can be greatly improved compared to the conventional one. Also,
In the conventional support layer composed of NiO and YSZ powder, the supplied fuel gas was divided into two and half could not be effectively used. However, since the metal support layer allows the shape to be freely processed, the fuel gas is not divided into two. It is now possible to adopt a structure that can be effectively used for.
【０００８】具体的な金属支持層を例示すると、Ｎｉ−
２３％Ｃｒ−１４％Ｆｅ（１０００℃弾性率：１１．４
×１０3 ｋｇ／ｍｍ2 ）、Ｎｉ−２２％Ｃｒ−１４％Ｗ
−２％Ｍｏ（１０００℃弾性率：１１．４×１０3 ｋｇ
／ｍｍ2 ）、Ｃｏ−２２％Ｎｉ−２２％Ｃｒ−１４．５
％Ｗ（１０００℃弾性率：１４．８×１０3 ｋｇ／ｍｍ
2 ）、Ｎｉ−１６％Ｃｒ−４．５％Ａｌ（１０００℃弾
性率：１３．９×１０ 3 ｋｇ／ｍｍ2 ）などがあげられ
る。An example of a specific metal supporting layer is Ni-
23% Cr-14% Fe (1000 ° C. elastic modulus: 11.4
× 103kg / mm2), Ni-22% Cr-14% W
-2% Mo (1000 ° C. elastic modulus: 11.4 × 103kg
/ Mm2), Co-22% Ni-22% Cr-14.5
% W (1000 ° C. elastic modulus: 14.8 × 103kg / mm
2), Ni-16% Cr-4.5% Al (1000 ° C bullet
Sex ratio: 13.9 × 10 3kg / mm2) Etc.
It
【０００９】[0009]
【実施例】本発明の一実施例を図１〜図３を参照して説
明する。図１において、発電層４とインタコネクタ層１
と前記両層の間にはさまれた支持層２，５の還元剤支持
膜２に金属（１０００℃の弾性率１３．９×１０3 ｋｇ
／ｍｍ2 のＮｉ−１６％Ｃｒ−４．５％Ａｌ）を使用し
た。還元剤側支持膜２に該金属を使った時の支持膜形状
例を図２，図３に示す。金属支持膜を使用した例として
図２は０．０５〜０．１ｍｍの金属細線を４５°のなな
め織りメッシュとした支持部材２−１（図２の左図）を
ガス通路を形成するために波型に加工した部品２′（図
２の右図）の例である。図３は厚さ５０〜２００μｍの
金属薄板にスリット加工をほどこした支持部材２−２
（図３の左図）をガス通路として波型加工した部材２″
（図３の右図）である。このようにして支持層を加工し
実際に電池内に組込んだものが図１の平板型固体電解質
燃料電池である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In FIG. 1, a power generation layer 4 and an interconnector layer 1
The elastic modulus 13.9 × 10 metal (1000 ° C. in a reducing agent supporting film 2 of the support layer 2 and 5 sandwiched between the two layers and 3 kg
/ Mm 2 Ni-16% Cr-4.5% Al) was used. An example of the shape of the supporting film when the metal is used for the reducing agent side supporting film 2 is shown in FIGS. As an example of using a metal supporting film, FIG. 2 shows a case where a metal thin wire of 0.05 to 0.1 mm is used as a support member 2-1 (left side of FIG. 2) made of 45 ° slanted mesh to form a gas passage. It is an example of a corrugated part 2 '(the right side of FIG. 2). FIG. 3 shows a supporting member 2-2 in which a metal thin plate having a thickness of 50 to 200 μm is slit.
A member 2 ″ that is corrugated as a gas passage (left side of FIG. 3)
(Right view of FIG. 3). The flat layer type solid electrolyte fuel cell of FIG. 1 is obtained by processing the support layer in this manner and actually incorporating it into the cell.
【００１０】[0010]
【発明の効果】本発明は前述のように燃料電池運転温度
において発生する熱膨張の伸びを吸収する構造をもつ金
属を還元剤側支持膜に用いることにより、サーメット支
持層では製作時に多くの工程を有していたが金属とする
ことにより製作工程が大幅に短縮できた。また、サーメ
ット支持部材では運転時に還元雰囲気にさらされるため
体積変化を起こし応力を発生していたが金属とすること
で応力発生がなくなった。さらに、サーメット支持層で
は成形状の問題により燃料ガスが２分される形状にしか
成形できなかったが金属とすることにより加工が容易と
なり、ガスを２分することなく有効利用できるようにな
った。As described above, according to the present invention, a metal having a structure for absorbing the expansion of thermal expansion generated at the fuel cell operating temperature is used for the reducing agent side supporting film, so that the cermet supporting layer has many steps during manufacturing. However, by using metal, the manufacturing process could be shortened significantly. Further, the cermet support member was exposed to a reducing atmosphere during operation, which caused a volume change and generated stress, but the use of metal eliminated the stress. Further, the cermet support layer could be molded only into a shape in which the fuel gas could be divided into two due to the problem of molding shape, but using a metal facilitates the processing, and the gas can be effectively used without dividing into two. .
【図１】本発明の一実施例の平板型固体電解質燃料電池
の構成の説明図。FIG. 1 is an explanatory diagram of a configuration of a flat plate type solid electrolyte fuel cell according to an embodiment of the present invention.
【図２】図１の還元剤側支持層の一例の説明図。FIG. 2 is an explanatory diagram of an example of a reducing agent side support layer of FIG.
【図３】図１の還元剤側支持層の他例の説明図。3 is an explanatory view of another example of the reducing agent side support layer of FIG. 1. FIG.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 武信 弘一 兵庫県神戸市兵庫区和田崎町一丁目１番１ 号 三菱重工業株式会社神戸造船所内 (72)発明者 入野 光博 兵庫県高砂市荒井町新浜二丁目１番１号 三菱重工業株式会社高砂研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Koichi Takenobu, Koichi Takenobu 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe, Hyogo Prefecture Mitsubishi Heavy Industries, Ltd. Kobe Shipyard (72) Mitsuhiro Irino, Niihama, Arai-cho, Takasago-shi, Hyogo Prefecture 1-1-1 Mitsubishi Heavy Industries Ltd. Takasago Research Center
Claims (1)
に設けられた支持層からなる平板型固体電解質燃料電池
において、燃料通路側支持層として熱膨張により発生す
る伸びを吸収しうる形状の耐熱温度９００〜１１００℃
の金属を用いてなることを特徴とする平板型固体電解質
燃料電池。1. A flat type solid electrolyte fuel cell comprising a power generation layer, an interconnector layer, and a support layer provided between the layers, and having a shape capable of absorbing elongation generated by thermal expansion as a fuel passage side support layer. Heat resistance temperature of 900-1100 ℃
A flat plate type solid electrolyte fuel cell, which is characterized by using the above metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4160860A JPH065294A (en) | 1992-06-19 | 1992-06-19 | Flat type solid electrolytic fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4160860A JPH065294A (en) | 1992-06-19 | 1992-06-19 | Flat type solid electrolytic fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH065294A true JPH065294A (en) | 1994-01-14 |
Family
ID=15723947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4160860A Withdrawn JPH065294A (en) | 1992-06-19 | 1992-06-19 | Flat type solid electrolytic fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH065294A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003007318A (en) * | 2001-06-21 | 2003-01-10 | Mitsubishi Materials Corp | Solid electrolyte fuel cell |
-
1992
- 1992-06-19 JP JP4160860A patent/JPH065294A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003007318A (en) * | 2001-06-21 | 2003-01-10 | Mitsubishi Materials Corp | Solid electrolyte fuel cell |
| JP4512911B2 (en) * | 2001-06-21 | 2010-07-28 | 三菱マテリアル株式会社 | Solid oxide fuel cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990831 |