JPS5887773A - Formation of electrolyte layer for fused carbonate fuel battery - Google Patents
Formation of electrolyte layer for fused carbonate fuel batteryInfo
- Publication number
- JPS5887773A JPS5887773A JP56185257A JP18525781A JPS5887773A JP S5887773 A JPS5887773 A JP S5887773A JP 56185257 A JP56185257 A JP 56185257A JP 18525781 A JP18525781 A JP 18525781A JP S5887773 A JPS5887773 A JP S5887773A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- matrix
- electrode
- slurry
- electrolyte 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.)
- Granted
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
- H01M8/14—Fuel cells with fused electrolytes
- H01M8/141—Fuel cells with fused electrolytes the anode and the cathode being gas-permeable electrodes or electrode layers
-
- 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
- H01M8/14—Fuel cells with fused electrolytes
- H01M2008/147—Fuel cells with molten carbonates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0048—Molten electrolytes used at high temperature
- H01M2300/0051—Carbonates
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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】
発明の技術分野
本発明は溶融炭酸塩燃料電池用電解質層Ｏ形成法に関す
る。TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for forming an electrolyte layer O for a molten carbonate fuel cell.
発明の技術的背景
燃料電池、例えば溶融炭酸塩燃料電池（以下ＭＣＦＣと
配す）は、対向して配置されたガス拡散電極（燃料極、
空気極）の関に、炭酸塩を電等質として保持したマトリ
ックス層を配したものな単位電池として用いる。マ）
ＩＪツクス層は次の特性条件を有する必要がある。Technical Background of the Invention A fuel cell, for example, a molten carbonate fuel cell (hereinafter referred to as MCFC), consists of gas diffusion electrodes (fuel electrodes,
It is used as a unit cell with a matrix layer containing carbonate as an electrolyte in front of the air electrode. Ma)
The IJTx layer must have the following characteristic conditions.
１）炭酸塩保持能力が十分である。1) Sufficient carbonate retention capacity.
２） ＭＣＦＣ内でのガスの交差混合を阻止する。2) Prevent cross-mixing of gases within the MCFC.
３）電極との接触が十分であり、内部抵抗を最小限にす
るため薄くヂる必要がある。3) It must be thin enough to have sufficient contact with the electrode and minimize internal resistance.
４）単位電池！ｊシの出力を大きくするために大型化す
る必要がある０
従来はマトリックス骨材をノ（イングーと混合し薄膜塗
布法（ｔａｐｅ Ｃａｓｔｉｎｇ） 、冷間加工法（Ｃ
ｏｌｄｐｒｅｓｓ法）等により、薄板状にしてマトリッ
クス層を形成し、このマトリックス層に炭酸塩を含浸さ
せたｔのを電解質層として用い、電池を形成する際には
、多孔質で薄板状の電極ではさみ単位電池としていた０
背景技術の問題点
しかし上記方法により形成し構成したＭＣＦＣは電極と
電解質層が板状で、しかも電解質層は柔軟性に欠けるた
めに両者Ｏ密着性が悪く電池の内部抵抗が大きくなシミ
圧Ｏロスが大きくなる０又、大型化した場合６、薄板状
であるので取扱いが困難であった。さらＫ、従来法では
電極と電解質を別々工程で製造するため連続プロセス化
は非常に困難であった。4) Unit battery! In order to increase the output of the machine, it is necessary to increase the size of the machine.0 Conventionally, matrix aggregates were mixed with glue and processed using the thin film coating method (tape casting) or the cold working method (C
A matrix layer is formed by forming a matrix layer into a thin plate using a method such as the oldpress method, and this matrix layer is impregnated with carbonate, which is used as an electrolyte layer. When forming a battery, a porous thin plate electrode is used. Problems with the Background Art However, in the MCFC formed and constructed by the above method, the electrodes and electrolyte layer are plate-shaped, and the electrolyte layer lacks flexibility, so the adhesion between the two is poor and the internal resistance of the battery is low. If the stain pressure is large, the loss of pressure increases.Also, when the size is increased6, it is difficult to handle because it is in the form of a thin plate. Furthermore, in the conventional method, the electrode and electrolyte are manufactured in separate steps, making it extremely difficult to implement a continuous process.
発明の目的
本発明は従来法の欠点を克服し、内部抵抗が小さく、取
扱いが容易で、連続生産プロセスに適した電解質層形成
法を提供することを目的とする。OBJECTS OF THE INVENTION The present invention aims to overcome the drawbacks of conventional methods and to provide a method for forming an electrolyte layer that has a low internal resistance, is easy to handle, and is suitable for continuous production processes.
発明の概要
本発明はカソード電極へマトリックス骨材とバインダー
を混合したスラリー物を直接電極に塗布した後、大気中
で焼成してマトリックス層とし。Summary of the Invention The present invention involves applying a slurry mixture of matrix aggregate and binder directly to a cathode electrode, and then baking the slurry in the atmosphere to form a matrix layer.
このマ） ＩＪックス層に炭酸塩を含浸して電解質層と
する方法である。This method involves impregnating the IJx layer with carbonate to form an electrolyte layer.
発明の効果
従来はマトリックス骨材を電極に塗布することは電極材
料（金属）とマ） ＩＪフックス材の熱膨張係数が異な
るため困難であるとされていた。しかし本発明ではマト
リックス骨材と電極材料とを温合してスラリー状にした
後、薄い層を電極層上に形成せしめることにより熱膨張
を吸収してこの困−を克服し、マトリックス骨材を電極
へ直接塗布することを可能くした。この方法によれば、
マトリックス層を直接電極に塗布して形成するので、接
触抵抗は少なくなり電池性能は向上する０又、カソード
極は酸化物が使用されてもよいので、カソード電極層を
形成し、乾燥後にマトリックス骨材のスラリーを塗布し
、空気中で焼結することかで角、製造プロセスを簡略化
出来、連続プロセスにも適用し易くなる。Effects of the Invention Conventionally, it was considered difficult to apply a matrix aggregate to an electrode because the electrode material (metal) and the IJ Fuchs material have different coefficients of thermal expansion. However, in the present invention, after heating the matrix aggregate and electrode material to form a slurry, a thin layer is formed on the electrode layer to absorb thermal expansion and overcome this problem. This makes it possible to apply directly to the electrode. According to this method,
Since the matrix layer is formed by applying it directly to the electrode, the contact resistance is reduced and the battery performance is improved.In addition, since an oxide may be used for the cathode electrode, the matrix bone is formed after forming the cathode electrode layer and drying. By applying a slurry of the material and sintering it in air, the manufacturing process can be simplified and it can be easily applied to continuous processes.
発明の実施例 以下本発明の実施例を述べる。Examples of the invention Examples of the present invention will be described below.
実施例 １
多孔度７５チのカソード電極となるＮ１焼結体上にγ−
Ｌ ＩＡｊＯ２５０ｗ ｔチとＮ１粉ｓｏｗｔチの混合
物にポリビニルブチラール１ｗｔ％を加えスラリー状に
したスラリー物を０．０５ｘＩＫの厚みに塗布し、１０
０’Ｏで十分乾燥する０この上にγ−Ｌ ｌＡ１０ ｚ
と３ｗｔ％のポリビニルブチラールを含むスラリー物を
０．３ Ｅｍ塗布し乾燥する。これを９００℃で２時間
保持し焼結してマトリックス層を形成し、１１１図に模
式的に示す断面図のようにカソード電極ｌ上に電極材と
マトリックス材の混在層２、さらにその上にマトリック
ス層３を有するものを得た。得られたマトリックスＩ−
３は多孔度６２％で電極１との密着性は混在層２を介在
させて良好であった。Example 1 γ-
A slurry made by adding 1 wt% of polyvinyl butyral to a mixture of LIAjO250wt and N1 powder sowt was applied to a thickness of 0.05xIK, and
Dry thoroughly at 0'O. On top of this, γ-L lA10 z
A slurry containing 3 wt % of polyvinyl butyral was applied in an amount of 0.3 Em and dried. This is held at 900°C for 2 hours and sintered to form a matrix layer, and as shown in the cross-sectional view schematically shown in Figure 111, a mixed layer 2 of electrode material and matrix material is placed on the cathode electrode l, and further on top of that. A product having matrix layer 3 was obtained. The resulting matrix I-
No. 3 had a porosity of 62% and good adhesion to the electrode 1 with the interposition of the mixed layer 2.
上Ｂｅ マド！ｊ ｙ りｘ 層Ｋ Ｌｓ ２■３４６
ｗｔ ％ 、 Ｋ２ＣＯｓ５４■−ｔ％の混合アルカリ
炭酸塩を６５０℃に保ち１００ＫＦ。Upper Be Mad! j y ri x layer K Ls 2■346
wt%, K2COs54■-t% mixed alkali carbonate was kept at 650℃ and 100KF.
になるように排気されたオープンに入れ、２時間保持し
炭酸塩を含浸させ電解質層とし丸。得られたものを電解
質層としてアノード電極Ｋ Ｎ１ （９Ｑｍｏｌチ）
−Ｃｒ （１０ｍｏ Ｉチ）の焼結体を用い、単電池を
組み特性を評価した。結果を１ｇ２図に本実施例の特性
曲線を人として示す。電極と電解質層が密着されている
ため内部抵抗による電圧のロスが少なく、良い特性のも
のが得られた。なお従来法によるものの特性は線Ｃとし
て示しである。Place it in an evacuated open chamber and hold it for 2 hours to impregnate it with carbonate and form an electrolyte layer. The obtained material was used as an electrolyte layer for anode electrode KN1 (9Qmol).
A single cell was assembled using a sintered body of -Cr (10 mo l) and its characteristics were evaluated. The results are shown in Figure 1g2, which shows the characteristic curve of this example as a human. Because the electrode and electrolyte layer were in close contact, there was little voltage loss due to internal resistance, and good characteristics were obtained. Note that the characteristic of the conventional method is shown as line C.
実施例 ２
酸化ニッケル中に５ｍＯｌ−のＬｌを含む酸化物に３０
ｗｔ％のコーンスターチを多孔質形成材とし加え、ホＩ
Ｊビニールアルコールの２ｗｔ％水ｇｉにより、スラリ
ー物としたｔのをニツケルメツシ為に塗布乾燥し、カソ
ード電極となる乾燥物作成した０これにポリビニルブチ
ラールを１ ｗｔ％含むγ型ＬｉＡＪＯ２のスラリー物
を塗布し乾燥後９００℃で２時間で焼結しマトリックス
層を形成したＯ得られた多孔質のカッニド電極にマトリ
ックス層が積層された積層体のマトリックス層に実施例
１に従い同様に炭酸塩を含浸した後、特性を杆価した０
第２図に本実施例の特性曲線をＢとして示すように実施
例１と同様に良好な結果を示す。Example 2 In an oxide containing 5 mOl of Ll in nickel oxide, 30
wt% of cornstarch was added as a porous forming agent, and
A slurry of J vinyl alcohol with 2 wt% water gi was coated and dried to form a nickel mesh, and a dried product to be used as a cathode electrode was prepared.A slurry of γ-type LiAJO2 containing 1 wt% polyvinyl butyral was applied to this. After drying, it was sintered at 900°C for 2 hours to form a matrix layer.The matrix layer of the resulting laminate in which the matrix layer was laminated on the porous cannide electrode was impregnated with carbonate in the same manner as in Example 1. After that, the characteristic is changed to 0
As shown in FIG. 2, the characteristic curve of this example is shown as B, showing good results as in Example 1.
以上記載した実施例２においては電極と電解質層となる
マトリックス層を同工程で塗布で角るので製造工程は簡
略化できる。又、同時塗布で１極とマ） ＩＪックス層
の２つの層は十分接触しているため電圧のロスは少ない
等の利点を有する。In Example 2 described above, the electrodes and the matrix layer which becomes the electrolyte layer are coated and squared in the same process, so the manufacturing process can be simplified. Moreover, since the two layers of the IJx layer are in sufficient contact with one another when coated at the same time, there is an advantage that there is little voltage loss.
第１図は本発明に係る一実施例を模式的に示す断面図、
第２図は本発明に係る単電池の特性図である。
１・・・マトリッ、クス層、 ２・・・混在層、３・
・・カソード電極。
代理人 弁理士 則 近 憲 佑
（ほか１名）
）
県
ゼ
第１図
第２図FIG. 1 is a sectional view schematically showing an embodiment according to the present invention,
FIG. 2 is a characteristic diagram of the cell according to the present invention. 1...Matrix, matrix layer, 2...Mixed layer, 3...
...Cathode electrode. Agent Patent Attorney Kensuke Chika (and 1 other person) Kenze Figure 1 Figure 2
Claims (1)
炭酸塩燃料電池の電解質層形成法に於て、カーノード電
極上にマトリックス骨材Ｏス２リーを直接塗布し乾燥さ
せ、乾燥後焼結してマトリックス層を形成し、このマト
リックス層に炭酸塩を含浸させたことを特徴とする溶融
炭酸塩燃料電池の電解質層形成法。In the electrolyte layer formation method for a molten carbonate fuel cell that has one pair of porous electrodes and a carbonate electrolyte between them, matrix aggregate O23 is directly applied onto the carnode electrode, dried, and sintered after drying. 1. A method for forming an electrolyte layer for a molten carbonate fuel cell, comprising: forming a matrix layer, and impregnating the matrix layer with carbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56185257A JPS5887773A (en) | 1981-11-20 | 1981-11-20 | Formation of electrolyte layer for fused carbonate fuel battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56185257A JPS5887773A (en) | 1981-11-20 | 1981-11-20 | Formation of electrolyte layer for fused carbonate fuel battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5887773A true JPS5887773A (en) | 1983-05-25 |
| JPH0324743B2 JPH0324743B2 (en) | 1991-04-04 |
Family
ID=16167647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56185257A Granted JPS5887773A (en) | 1981-11-20 | 1981-11-20 | Formation of electrolyte layer for fused carbonate fuel battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5887773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6391961A (en) * | 1986-10-03 | 1988-04-22 | Sanyo Electric Co Ltd | Molten carbonate type fuel cell |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57185678A (en) * | 1981-04-27 | 1982-11-15 | Energy Res Corp | High temperature fuel battery assembly |
-
1981
- 1981-11-20 JP JP56185257A patent/JPS5887773A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57185678A (en) * | 1981-04-27 | 1982-11-15 | Energy Res Corp | High temperature fuel battery assembly |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6391961A (en) * | 1986-10-03 | 1988-04-22 | Sanyo Electric Co Ltd | Molten carbonate type fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0324743B2 (en) | 1991-04-04 |
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