JPH0413287B2 - - Google Patents
Info
- Publication number
- JPH0413287B2 JPH0413287B2 JP58192405A JP19240583A JPH0413287B2 JP H0413287 B2 JPH0413287 B2 JP H0413287B2 JP 58192405 A JP58192405 A JP 58192405A JP 19240583 A JP19240583 A JP 19240583A JP H0413287 B2 JPH0413287 B2 JP H0413287B2
- Authority
- JP
- Japan
- Prior art keywords
- porous
- flat plate
- ribbed
- injection molding
- reaction injection
- 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
- 238000004519 manufacturing process Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 238000010304 firing Methods 0.000 claims description 6
- 238000010107 reaction injection moulding Methods 0.000 claims description 5
- 239000011550 stock solution Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- SQAINHDHICKHLX-UHFFFAOYSA-N 1-naphthaldehyde Chemical compound C1=CC=C2C(C=O)=CC=CC2=C1 SQAINHDHICKHLX-UHFFFAOYSA-N 0.000 description 1
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 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
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Description
〔発明の利用分野〕
本発明は、三次元的網目状構造および60〜80％
の空隙率を有していて、電解質液などによる耐食
性と導電性並びに燃料の燃焼性にすぐれた燃料電
池電極として好適な導電性多孔質平板の製造方法
に関する。
〔発明の背景〕
従来、導電性多孔質平板は大容量の燃料電池用
電極として未開発であつて、特に高いエネルギ変
換効率を有し安価に生産できるものは提供されて
いなかつた。すなわち、電力事業用燃料電池の開
発研究が1972年頃から米国United Technology
社などにおいて開始され、現在パイロツトプラン
トが稼動できるまでに至つたが、出力は4500KW
程度の小容量のものである。事業用高出力発電プ
ラントにおいては、高いエネルギ変換効率と経済
的生産技術の開発が必要である。本発明の対象と
する大面積の電極の製造方法に関しては、試行的
に検討されているが、いずれも多大の工数を要し
て電力事業用に供し得る程度に達していない欠点
がある。
〔発明の目的〕
本発明は、上記の欠点を解決するもので、その
目的はエネルギ変換効率が高く経済的に生産でき
る導電性多孔質平板の製造方法を提供することに
ある。
〔発明の概要〕
本発明の導電性多孔質平板の製造方法は、樹脂
あるいは金属からなる三次元的網目状構造を有す
る多孔質体を溶融ピツチで処理後焼成される多孔
質カーボンを、反応射出成形用リブ付きキヤビテ
イ内に設置し、次いで化学的に活性な二種類の原
液を反応射出することによりリブ付き電極原板を
成形し、更にこのリブ付き電極原板を焼成してな
ることを特徴としている。
〔発明の実施例〕
以下、本発明の一実施例を図に基づいて説明す
る。まず、本実施例の概要を説明する。
本発明によるリブ付き導電性多孔質平板を製造
する方法は、次の主たる二工程からなる。すなわ
ち、第１の工程は、第１図Ａ又はＢに示すよう
に、多孔質樹脂１又は多孔質金属２を融体ピツチ
の溶射又は浸漬の作業３を実施し、次に焼成作業
４を経て空隙率85％以上の多孔質カーボン５を製
造する工程であり、第２の工程は、第２図に示す
ように、前記多孔質カーボン５を成形用リブ付き
キヤビテイ６内にセツトし、化学的に活性な２種
類の原液の反応射出成形（これをインサートモー
ルドRIMという）７によりリブ付き電極原板８
を成形し、次いでこのリブ付き電極原板８を焼成
する作業９を経て導電性多孔質電極１０を製造す
る工程である。
以下、具体的な実施例をもつて本発明を更に詳
細に説明する。
実施例 １
多孔質アルミニウムに、400℃以上で１時間以
上保持したナフサタールピツチ融液を噴射用ノズ
ルを有するガンで溶射処理し、次に焼成炉中にお
いて室温から徐々に昇温して最高800℃まで至ら
しめ通算約10時間焼成することにより、空隙率90
％の多孔質カーボンを得た。次にこの多孔質カー
ボンをリブ付き型キヤビテイ内にセツトする。反
応射出成形機は、化学的に活性な２種類の原液タ
ンクすなわちＡ液タンクには、発泡剤フレオンＲ
−11を10重量％含むポリオール組成物を収納し、
Ｂ液タンクにはイソシアネート（４，4′−ジフエ
ニルメタンジイソシアネート）を収納した成形機
であつて、この場合商品名シンシナテイミラクロ
ン製LRM−R25を改造したものを用い、Ａ液と
Ｂ液とを衝突混合させたあと上記型内に射出して
発泡硬化させ、リブ付き電極原板を得た。このリ
ブ付き電極原板を220℃の空気雰囲気下で４時間
焼成し、次に窒素ガスパージ下で800℃を４時間
保つて焼成を行い、更に徐々に昇温して1800℃で
４時間の焼成を行なつたあと降温させて、気孔を
有する三次元網目状の電極板すなわち導電性多孔
質平板を得た。
この電極の諸物性は、常法により測定した結
果、下表の番号１に示す値を得た。すなわち、成
形品密度が810Kg／m3、空隙率63％、曲げ強さ145
Kg／cm2という比較的剛性の高い平板が得られた
が、耐電解質液、ガス透過性共に優れた性質を示
した。また、本実施例で得られた導電性多孔質平
板を、その組織を模式的に拡大して示したのが第
３図である。図中、２１をもつて三次元網目状の
骨格構造を有する多孔質カーボンを示す。
[Field of Application of the Invention] The present invention relates to a three-dimensional network structure and a 60 to 80%
The present invention relates to a method for producing a conductive porous flat plate having a porosity of 100% and having excellent corrosion resistance and conductivity due to electrolytes, etc., and excellent combustibility of fuel, and suitable as a fuel cell electrode. [Background of the Invention] Conventionally, electrically conductive porous flat plates have not been developed as electrodes for large-capacity fuel cells, and none that have particularly high energy conversion efficiency and can be produced at low cost have been available. In other words, the research and development of fuel cells for the electric power industry began in 1972 at United Technology
The pilot plant has now been put into operation, with an output of 4500KW.
It has a relatively small capacity. Commercial high-output power plants require the development of high energy conversion efficiency and economical production technology. Although methods for manufacturing large-area electrodes, which are the object of the present invention, have been studied on a trial basis, all of them have the disadvantage that they require a large number of man-hours and are not suitable for use in the electric power industry. [Object of the Invention] The present invention solves the above-mentioned drawbacks, and its object is to provide a method for producing a conductive porous flat plate that has high energy conversion efficiency and can be produced economically. [Summary of the Invention] The method for producing a conductive porous flat plate of the present invention involves reaction injection of porous carbon, which is fired after treating a porous body made of resin or metal with a three-dimensional network structure in a molten pitch. It is characterized by being placed in a molding ribbed cavity, then molding a ribbed electrode base plate by reaction-injecting two types of chemically active stock solutions, and then firing this ribbed electrode base plate. . [Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings. First, an overview of this embodiment will be explained. The method of manufacturing a ribbed conductive porous plate according to the present invention consists of the following two main steps. That is, in the first step, as shown in FIG. 1A or B, the porous resin 1 or the porous metal 2 is thermally sprayed or immersed in a molten pitch (3), and then fired (4). This is a step of manufacturing porous carbon 5 with a porosity of 85% or more, and the second step is to set the porous carbon 5 in a molding ribbed cavity 6 and chemically Ribbed electrode base plate 8 is formed by reaction injection molding (this is called insert mold RIM) 7 of two types of stock solutions active in
This is a step of manufacturing a conductive porous electrode 10 through operation 9 of molding and then firing the ribbed electrode original plate 8. Hereinafter, the present invention will be explained in more detail using specific examples. Example 1 Porous aluminum was thermally sprayed with a naphthal pitch melt kept at 400°C or higher for 1 hour or more using a gun with a spray nozzle, and then heated gradually from room temperature in a firing furnace to a maximum temperature of 800°C. By heating the temperature to ℃ and firing for a total of about 10 hours, the porosity becomes 90.
% porous carbon was obtained. This porous carbon is then placed into a ribbed cavity. The reaction injection molding machine has two types of chemically active stock solution tanks, namely the A solution tank, which contains the blowing agent Freon R.
A polyol composition containing 10% by weight of -11 is stored,
The B liquid tank is a molding machine that stores isocyanate (4,4'-diphenylmethane diisocyanate). After collision-mixing, the mixture was injected into the mold and foamed and hardened to obtain a ribbed electrode original plate. This ribbed electrode original plate was fired in an air atmosphere at 220°C for 4 hours, then fired at 800°C for 4 hours under a nitrogen gas purge, and then gradually raised to 1800°C for 4 hours. After this, the temperature was lowered to obtain a three-dimensional mesh electrode plate having pores, that is, a conductive porous flat plate. The physical properties of this electrode were measured by conventional methods, and the values shown in number 1 in the table below were obtained. In other words, the density of the molded product is 810Kg/m 3 , the porosity is 63%, and the bending strength is 145.
A flat plate with relatively high rigidity of Kg/cm 2 was obtained, and exhibited excellent properties in terms of resistance to electrolyte and gas permeability. Further, FIG. 3 is a schematic enlarged view of the structure of the conductive porous plate obtained in this example. In the figure, 21 indicates porous carbon having a three-dimensional network skeleton structure.
本発明による導電性多孔質平板の製造方法は大
容量用に適しすぐれた経済性を有する効果が上げ
られる。
なお当然のことではあるが、本発明は上記説明
した実施例にのみ限定されるものではない。
The method of manufacturing a conductive porous flat plate according to the present invention is suitable for large-capacity applications and has excellent economic efficiency. It goes without saying that the present invention is not limited to the embodiments described above.
第１図は第１の工程たる多孔質カーボンの製造
工程を示すフローチヤート、第２図は導電性多孔
質平板の製造工程を示すフローチヤート、第３図
は本発明の一実施例において得られた骨格構造を
有する多孔質カーボンを示す拡大模式図である。
２１……三次元的網目構造を有する多孔質平
板。
FIG. 1 is a flowchart showing the first step of manufacturing porous carbon, FIG. 2 is a flowchart showing the manufacturing process of a conductive porous flat plate, and FIG. 3 is a flowchart showing the manufacturing process of porous carbon, which is the first step. FIG. 2 is an enlarged schematic diagram showing porous carbon having a skeletal structure. 21... Porous flat plate having a three-dimensional network structure.
Claims (1)
造を有する多孔質体を溶融ピツチで処理後焼成さ
れる多孔質カーボンを、反応射出成形用リブ付き
キヤビテイ内に設置し、次いで化学的に活性な二
種類の原液を反応射出成形することにより賦形さ
れるリブ付き電極原板を焼成してなることを特徴
とする導電性多孔質平板の製造方法。 ２ 反応射出成形用の原液に予め発泡剤を混合さ
せておくことを特徴とする特許請求の範囲第１項
記載の導電性多孔質平板の製造方法。[Scope of Claims] 1. Porous carbon, which is prepared by treating a porous body made of resin or metal and having a three-dimensional network structure with a molten pitch and then firing it, is placed in a ribbed cavity for reaction injection molding, and then 1. A method for producing a conductive porous flat plate, comprising firing a ribbed electrode base plate formed by reaction injection molding of two types of chemically active stock solutions. 2. The method for producing a conductive porous flat plate according to claim 1, characterized in that a blowing agent is mixed in advance into the stock solution for reaction injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58192405A JPS6086013A (en) | 1983-10-17 | 1983-10-17 | Porous flat plate having electrical conductivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58192405A JPS6086013A (en) | 1983-10-17 | 1983-10-17 | Porous flat plate having electrical conductivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6086013A JPS6086013A (en) | 1985-05-15 |
| JPH0413287B2 true JPH0413287B2 (en) | 1992-03-09 |
Family
ID=16290768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58192405A Granted JPS6086013A (en) | 1983-10-17 | 1983-10-17 | Porous flat plate having electrical conductivity |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6086013A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0669907B2 (en) * | 1989-04-28 | 1994-09-07 | 日本碍子株式会社 | Method for manufacturing electron conductive porous ceramic tube |
| JP5277950B2 (en) * | 2008-12-24 | 2013-08-28 | トヨタ自動車株式会社 | Fuel cell |
| CN106829923A (en) * | 2017-03-16 | 2017-06-13 | 石河子大学 | A kind of biomass carbon material and preparation method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751110A (en) * | 1980-09-10 | 1982-03-25 | Kanebo Ltd | Preparation of porous carbon |
-
1983
- 1983-10-17 JP JP58192405A patent/JPS6086013A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751110A (en) * | 1980-09-10 | 1982-03-25 | Kanebo Ltd | Preparation of porous carbon |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6086013A (en) | 1985-05-15 |
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