JPH04357672A - Manufacture of electrode for fuel cell - Google Patents
Manufacture of electrode for fuel cellInfo
- Publication number
- JPH04357672A JPH04357672A JP3160058A JP16005891A JPH04357672A JP H04357672 A JPH04357672 A JP H04357672A JP 3160058 A JP3160058 A JP 3160058A JP 16005891 A JP16005891 A JP 16005891A JP H04357672 A JPH04357672 A JP H04357672A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- tape
- fuel cell
- slurry
- shaped
- 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
- 239000000446 fuel Substances 0.000 title claims description 26
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000002002 slurry Substances 0.000 claims description 17
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000919 ceramic Substances 0.000 claims description 6
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 6
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 29
- 229910052759 nickel Inorganic materials 0.000 description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 8
- 239000003792 electrolyte Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 229910000480 nickel oxide Inorganic materials 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N argon Substances [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 101100453572 Arabidopsis thaliana KCO3 gene Proteins 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910010092 LiAlO2 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 101100453573 Oryza sativa subsp. japonica TPKC gene Proteins 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- NPURPEXKKDAKIH-UHFFFAOYSA-N iodoimino(oxo)methane Chemical compound IN=C=O NPURPEXKKDAKIH-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- YQNQTEBHHUSESQ-UHFFFAOYSA-N lithium aluminate Chemical compound [Li+].[O-][Al]=O YQNQTEBHHUSESQ-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【０００１】0001
【産業上の利用分野】本発明は、炭酸溶融塩型の燃料電
池用電極の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a molten carbonate type fuel cell electrode.
【０００２】0002
【従来の技術】炭酸溶融塩型燃料電池とは、図２に示す
ように、炭酸リチウムや炭酸カリウムなどの炭酸溶融塩
からなる電解質１の両面を多孔質材からなるアノード２
（陽極）とカソード３（陰極）とで挟み、上記電解質１
及びアノード２とカソード３をコルゲート状のセパレー
タ４を介在させて多段に積層し、セパレータ４のアノー
ド２側に、石炭ガスや天然ガスやメタノールなどの水素
や一酸化炭素を含む燃料ガスが通る燃料ガス通路５を形
成し、且つ、セパレータ４のカソード３側に、空気など
の酸素を含むガスに二酸化炭素を加えた酸化剤ガスが通
る酸化剤ガス通路６を形成したものであって、酸化剤ガ
ス通路６に酸化剤ガスを供給すると、カソード３側で酸
化剤ガス中の二酸化炭素と酸素により炭酸イオンと電子
が生成され、生成された炭酸イオンと電子は電解質１を
アノード２側へ移動して、アノード２で燃料ガス通路５
へ供給された燃料ガス中の水素と反応し、水と二酸化炭
素が生成され、電気を発生するようになっている。[Prior Art] As shown in FIG. 2, a carbonate molten fuel cell consists of an electrolyte 1 made of a carbonate molten salt such as lithium carbonate or potassium carbonate, and an anode 2 made of a porous material on both sides.
(anode) and cathode 3 (cathode), and the electrolyte 1
The anode 2 and cathode 3 are stacked in multiple stages with a corrugated separator 4 interposed between them, and a fuel gas containing hydrogen and carbon monoxide such as coal gas, natural gas, and methanol passes through the anode 2 side of the separator 4. A gas passage 5 is formed, and an oxidizing gas passage 6 is formed on the cathode 3 side of the separator 4 through which an oxidizing gas containing carbon dioxide is added to an oxygen-containing gas such as air. When the oxidizing gas is supplied to the gas passage 6, carbonate ions and electrons are generated on the cathode 3 side by carbon dioxide and oxygen in the oxidizing gas, and the generated carbonate ions and electrons move through the electrolyte 1 to the anode 2 side. Then, the fuel gas passage 5 is connected to the anode 2.
It reacts with the hydrogen in the fuel gas supplied to the reactor, producing water and carbon dioxide, and generating electricity.
【０００３】上記したような炭酸溶融塩型燃料電池のカ
ソード３としては、従来、酸化ニッケル（ＮｉＯ）が使
用されているが、該カソード３は、多孔質のニッケル板
を燃料電池に組込んで、運転中に燃料電池内の高温環境
で酸化剤ガスによってニッケル板を酸化させて酸化ニッ
ケルとしている。Conventionally, nickel oxide (NiO) has been used as the cathode 3 of the above-mentioned molten carbonate fuel cell, but the cathode 3 is made by incorporating a porous nickel plate into the fuel cell. During operation, the nickel plate is oxidized to nickel oxide using an oxidant gas in the high-temperature environment inside the fuel cell.
【０００４】0004
【発明が解決しようとする課題】しかしながら、酸化ニ
ッケルをカソード３とする従来の炭酸溶融塩型燃料電池
では、燃料電池が加圧条件下で運転されるため、電解質
１にカソード３中のニッケル分が溶出して短絡現象を引
き起こし燃料電池の寿命を低下させてしまうという問題
があった。[Problems to be Solved by the Invention] However, in conventional molten carbonate fuel cells using nickel oxide as the cathode 3, since the fuel cell is operated under pressurized conditions, the nickel in the cathode 3 is absorbed into the electrolyte 1. There has been a problem in that the fuel cells are eluted and cause short circuit phenomena, which shortens the life of the fuel cell.
【０００５】本発明は、上述の実情に鑑み、電極からの
ニッケルなどの溶出を防止し得るようにした燃料電池用
電極の製造方法を提供することを目的とするものである
。SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, it is an object of the present invention to provide a method for manufacturing an electrode for a fuel cell, which can prevent leaching of nickel and the like from the electrode.
【０００６】[0006]
【課題を解決するための手段】本発明は、燃料電池用の
板状の電極を製造する方法において、電極基材となる電
子伝導物質を結合剤で混練してスラリーとし、該スラリ
ーを脱泡処理したのち、移動するキャリヤ−フィルム上
に所要厚さにのばしてテープ状のスラリーとし、該テー
プ状スラリーを乾燥させたのち還元雰囲気中で高温焼成
し、そのまま炉冷してテープ状多孔質体を形成し、該テ
ープ状多孔質体にセラミックスのコロイド溶液を含侵さ
せて乾燥させたのち、テープ状多孔質体の表面に水酸化
リチウムまたは炭酸リチウムの溶液を塗布または含侵さ
せて乾燥させ、さらに、還元雰囲気中で低温で加熱処理
して板状の電極とすることを特徴とする燃料電池用電極
の製造方法にかかるものである。[Means for Solving the Problems] The present invention is a method for manufacturing a plate-shaped electrode for a fuel cell, in which an electron conductive material serving as an electrode base material is kneaded with a binder to form a slurry, and the slurry is defoamed. After the treatment, it is spread on a moving carrier film to the required thickness to form a tape-shaped slurry, and after drying the tape-shaped slurry, it is fired at a high temperature in a reducing atmosphere, and then cooled in an oven to form a tape-shaped porous body. The tape-shaped porous body is impregnated with a ceramic colloidal solution and dried, and then a solution of lithium hydroxide or lithium carbonate is applied or impregnated onto the surface of the tape-shaped porous body and dried. Further, the present invention relates to a method for producing an electrode for a fuel cell, which is further characterized in that the electrode is heat-treated at a low temperature in a reducing atmosphere to form a plate-shaped electrode.
【０００７】[0007]
【作用】電子伝導物質を焼結してテープ状多孔質体を形
成し、テープ状多孔質体にセラミックスとリチウムを含
侵させて低温で焼成することにより、テープ状多孔質体
にセラミックスが融着されて製造された電極の強度が向
上すると共に、電極を構成する電子伝導物質が半リチウ
ム化されて電子伝導物質の溶出が防止される。[Operation] By sintering an electron conductive material to form a tape-shaped porous body, impregnating the tape-shaped porous body with ceramics and lithium, and firing at a low temperature, the ceramics are fused into the tape-shaped porous body. The strength of the manufactured electrode is improved, and the electron conductive material constituting the electrode is semi-lithiated, thereby preventing elution of the electron conductive material.
【０００８】[0008]
【実施例】以下に本発明の実施例を添付図面に基づいて
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the accompanying drawings.
【０００９】図１は燃料電池用電極の製造工程図である
。FIG. 1 is a diagram showing the manufacturing process of an electrode for a fuel cell.
【００１０】まず、電極基材となる電子伝導物質である
ニッケル粉７（例えば、ＩＮＣＯ社製Ｎｏ．２８７）と
結合剤８である水溶性アクリル樹脂と水を重量比で１０
０対１０対５０の割合でボールミル９にて混練し、スラ
リー１０とする。このスラリー１０を真空容器１７など
に入れ、スラリー１０内に含まれる気泡を除去する脱泡
処理をおこなったのち、いわゆるドクターブレード法に
て、一定の速度で移動するキャリヤ−フィルム１１上に
所要厚さにのばしてテープ状に形成し、テープ状スラリ
ー１２とする。このテープ状スラリー１２を湿度約５０
％の雰囲気中で、約１６時間放置して乾燥させる。First, nickel powder 7 (for example, No. 287 manufactured by INCO), which is an electron conductive material serving as an electrode base material, water-soluble acrylic resin, which is a binder 8, and water are mixed in a weight ratio of 10.
The mixture is kneaded in a ball mill 9 at a ratio of 0:10:50 to obtain a slurry 10. This slurry 10 is placed in a vacuum container 17 or the like, and after a defoaming process is performed to remove air bubbles contained in the slurry 10, it is coated onto a carrier film 11 moving at a constant speed to a desired thickness using a so-called doctor blade method. It is rolled out and formed into a tape shape to obtain a tape-shaped slurry 12. This tape-shaped slurry 12 is heated to a humidity of approximately 50%.
% atmosphere for about 16 hours to dry.
【００１１】この乾燥テープを、高温炉１３を用いて、
１０〜３０％水素−アルゴンの還元雰囲気中で８００〜
８５０℃で約３０分間焼成したのち、そのまま冷却する
。[0011] This drying tape is heated using a high-temperature oven 13.
800~ in a reducing atmosphere of 10~30% hydrogen-argon
After baking at 850°C for about 30 minutes, it is cooled as it is.
【００１２】この炉冷されたテープ状スラリー１２は、
ニッケル粉のテープ状多孔質体１４を形成する。このニ
ッケル粉のテープ状多孔質体１４を硝酸を溶媒とした約
２０％濃度のアルミナコロイド溶液に約５分間浸漬して
、アルミナなどのセラミックスを含侵させたのち、室温
にて乾燥させる。[0012] This furnace-cooled tape-like slurry 12 is
A tape-shaped porous body 14 of nickel powder is formed. This tape-shaped porous body 14 of nickel powder is immersed in a colloidal alumina solution of about 20% concentration using nitric acid as a solvent for about 5 minutes to impregnate ceramics such as alumina, and then dried at room temperature.
【００１３】更に、乾燥されたテープ状多孔質体１４に
、少なくとも水酸化リチウム（ＬｉＯＨ）または炭酸リ
チウム（ＬｉＣＯ３）の溶液を、塗布または含侵させ、
室温にて乾燥させる。Furthermore, the dried tape-shaped porous body 14 is coated with or impregnated with at least a solution of lithium hydroxide (LiOH) or lithium carbonate (LiCO3),
Dry at room temperature.
【００１４】この乾燥されたテープ状多孔質体１４を、
さらに低温炉１５を用いて、１０〜３０％水素−アルゴ
ン還元雰囲気中で約５００℃まで加熱して低温焼成し、
アルミナをテープ状多孔質体１４のニッケルに融着させ
ると共に、少なくともテープ状多孔質体１４の電解質側
となる面のニッケルを半リチウム化する。そのまま炉冷
後、テープ状多孔質体１４を所定のサイズに切断して製
品としての電極１６とする。[0014] This dried tape-shaped porous body 14 is
Furthermore, using the low temperature furnace 15, low temperature firing is performed by heating to about 500 ° C. in a 10 to 30% hydrogen-argon reducing atmosphere,
Alumina is fused to the nickel of the tape-shaped porous body 14, and at least the nickel on the surface of the tape-shaped porous body 14 facing the electrolyte is semilithiated. After cooling in the furnace, the tape-shaped porous body 14 is cut into a predetermined size to form an electrode 16 as a product.
【００１５】その後、本発明の方法により製造された電
極１６を、溶融炭酸塩型の燃料電池のカソード３として
組込み、燃料電池を運転することにより、燃料電池内の
高温高圧の環境と酸化剤により、カソード３のニッケル
が酸化して酸化ニッケルになると共に、カソード３の電
解質１側の面などにおける半リチウム化されたニッケル
が完全にリチウム化される。Thereafter, the electrode 16 manufactured by the method of the present invention is incorporated as the cathode 3 of a molten carbonate type fuel cell, and the fuel cell is operated, whereby the high temperature and high pressure environment within the fuel cell and the oxidizing agent are removed. The nickel in the cathode 3 is oxidized to nickel oxide, and the semi-lithiated nickel on the surface of the cathode 3 facing the electrolyte 1 is completely lithiated.
【００１６】このように、少なくともカソード３の電解
質１側の面がリチウム化されると、カソードからのニッ
ケルの溶出が防止され、しかも、電解質１から炭酸リチ
ウムや炭酸カリウム（ＫＣＯ３）がカソード３側へ移動
して消失することが防止されるので、燃料電池の寿命低
下が防止される。[0016] When at least the surface of the cathode 3 facing the electrolyte 1 is lithiated in this manner, leaching of nickel from the cathode is prevented, and moreover, lithium carbonate and potassium carbonate (KCO3) are transferred from the electrolyte 1 to the cathode 3 side. Since the fuel cell is prevented from moving and disappearing, the life of the fuel cell is prevented from decreasing.
【００１７】又、カソード３を構成する電極１６に融着
されたアルミナにより、電極１６の強度が向上され、圧
縮変形量が低下される。Furthermore, the alumina fused to the electrode 16 constituting the cathode 3 improves the strength of the electrode 16 and reduces the amount of compressive deformation.
【００１８】なお、含侵処理によってニッケル多孔質体
の空隙率は減少するため、ニッケル多孔質体の空隙率は
６０〜７０％程度とするのが好ましい。[0018] Since the porosity of the nickel porous body is reduced by the impregnation treatment, the porosity of the nickel porous body is preferably about 60 to 70%.
【００１９】なお、電子伝導物質であるニッケル粉の代
りにクロム粉またはニッケル−２〜８％クロム合金粉を
使用してもよく、また、セラミックスはアルミナ（Ａｌ
２Ｏ３）の他に、アルミン酸リチウム（ＬｉＡｌＯ２）
、酸化チタン（ＴｉＯ２）の酸化マグネシウム（ＭｇＯ
）、チタン酸ストロンチウム（ＴｉＳｒＯ２）、ジルコ
ニア（ＺｒＯ２）のいずれか一種以上からなるものでも
よく、さらに、コロイド溶液は硝酸、炭酸、有機酸のい
ずれか一つの溶媒にて安定化されたものでもよく、上記
いずれの組合せであってもよい。Note that chromium powder or nickel-2 to 8% chromium alloy powder may be used instead of nickel powder, which is an electron conductive substance, and ceramics may be made of alumina (Al
2O3), lithium aluminate (LiAlO2)
, titanium oxide (TiO2) magnesium oxide (MgO
), strontium titanate (TiSrO2), and zirconia (ZrO2).Furthermore, the colloidal solution may be stabilized with any one of nitric acid, carbonic acid, and organic acid. , any combination of the above may be used.
【００２０】また、本発明の燃料電池用電極の製造方法
は、前述の実施例のみに限定されるものではなく、本発
明の要旨を逸脱しない範囲内で種々変更を加え得ること
は勿論である。[0020] Furthermore, the method for manufacturing a fuel cell electrode of the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention. .
【００２１】[0021]
【発明の効果】以上説明したように、本発明の燃料電池
用電極の製造方法によれば、電極からのニッケルなどの
電子伝導物質の溶出などを防止して燃料電池の寿命低下
を防止できるという優れた効果を奏し得る。[Effects of the Invention] As explained above, according to the method of manufacturing electrodes for fuel cells of the present invention, it is possible to prevent the elution of electron conductive substances such as nickel from the electrodes, thereby preventing a reduction in the life of the fuel cell. It can have excellent effects.
【図面の簡単な説明】[Brief explanation of drawings]
【図１】本発明の方法にかかる燃料電池用電極の製造工
程図である。FIG. 1 is a process diagram for manufacturing a fuel cell electrode according to the method of the present invention.
【図２】燃料電池の原理図である。FIG. 2 is a diagram showing the principle of a fuel cell.
７ ニッケル粉（電極基材となる電子伝導物質）
８ 結合材
９ ボールミル（混練用）
１０ スラリー
１１ キャリヤーフィルム
１２ テープ状スラリー
１３ 高温炉（高温焼成用）
１４ テープ状多孔質体
１５ 低温炉（低温焼成用）
１６ 電極
１７ 真空容器（脱泡処理用）7 Nickel powder (electronic conductive material that becomes the electrode base material)
8 Binding material 9 Ball mill (for kneading) 10 Slurry 11 Carrier film 12 Tape-shaped slurry 13 High-temperature furnace (for high-temperature firing) 14 Tape-shaped porous body 15 Low-temperature furnace (for low-temperature firing) 16 Electrode 17 Vacuum container (for defoaming treatment) )
Claims (1)
法において、電極基材となる電子伝導物質を結合剤で混
練してスラリーとし、該スラリーを脱泡処理したのち、
移動するキャリヤ−フィルム上に所要厚さにのばしてテ
ープ状のスラリーとし、該テープ状スラリーを乾燥させ
たのち還元雰囲気中で高温焼成し、そのまま炉冷してテ
ープ状多孔質体を形成し、該テープ状多孔質体にセラミ
ックスのコロイド溶液を含侵させて乾燥させたのち、テ
ープ状多孔質体の表面に水酸化リチウムまたは炭酸リチ
ウムの溶液を塗布または含侵させて乾燥させ、さらに、
還元雰囲気中で低温で加熱処理して板状の電極とするこ
とを特徴とする燃料電池用電極の製造方法。1. A method for manufacturing a plate-shaped electrode for a fuel cell, in which an electron conductive material serving as an electrode base material is kneaded with a binder to form a slurry, the slurry is defoamed, and then the slurry is degassed.
A tape-shaped slurry is formed by spreading it to a required thickness on a moving carrier film, and after drying the tape-shaped slurry, it is fired at a high temperature in a reducing atmosphere, and then cooled in an oven to form a tape-shaped porous body, After the tape-shaped porous body is impregnated with a colloidal solution of ceramics and dried, the surface of the tape-shaped porous body is coated with or impregnated with a solution of lithium hydroxide or lithium carbonate and dried, and further,
A method for producing an electrode for a fuel cell, the method comprising heating the electrode at a low temperature in a reducing atmosphere to form a plate-shaped electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3160058A JPH04357672A (en) | 1991-06-03 | 1991-06-03 | Manufacture of electrode for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3160058A JPH04357672A (en) | 1991-06-03 | 1991-06-03 | Manufacture of electrode for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04357672A true JPH04357672A (en) | 1992-12-10 |
Family
ID=15706997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3160058A Pending JPH04357672A (en) | 1991-06-03 | 1991-06-03 | Manufacture of electrode for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04357672A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824913B2 (en) * | 2001-11-01 | 2004-11-30 | Korea Institute Of Science And Technology | Anode for molten carbonate fuel cell coated with porous ceramic films |
-
1991
- 1991-06-03 JP JP3160058A patent/JPH04357672A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6824913B2 (en) * | 2001-11-01 | 2004-11-30 | Korea Institute Of Science And Technology | Anode for molten carbonate fuel cell coated with porous ceramic films |
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