JPH02117068A - Manufacture of gas diffusion electrode - Google Patents
Manufacture of gas diffusion electrodeInfo
- Publication number
- JPH02117068A JPH02117068A JP63270568A JP27056888A JPH02117068A JP H02117068 A JPH02117068 A JP H02117068A JP 63270568 A JP63270568 A JP 63270568A JP 27056888 A JP27056888 A JP 27056888A JP H02117068 A JPH02117068 A JP H02117068A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- water
- conductive carbon
- gas diffusion
- ptfe
- 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
- 238000009792 diffusion process Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims abstract description 16
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 15
- 239000012153 distilled water Substances 0.000 claims abstract description 14
- 239000005871 repellent Substances 0.000 claims abstract description 13
- 239000011259 mixed solution Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims abstract description 6
- -1 etc. Substances 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- 239000008367 deionised water Substances 0.000 claims description 8
- 238000010304 firing Methods 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 abstract description 13
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052697 platinum Inorganic materials 0.000 abstract description 6
- 238000007731 hot pressing Methods 0.000 abstract description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 16
- 235000019441 ethanol Nutrition 0.000 description 12
- 229910021641 deionized water Inorganic materials 0.000 description 7
- 238000000967 suction filtration Methods 0.000 description 6
- 239000011812 mixed powder Substances 0.000 description 5
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002904 solvent 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
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8817—Treatment of supports before application of the catalytic active composition
- H01M4/8821—Wet proofing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8878—Treatment steps after deposition of the catalytic active composition or after shaping of the electrode being free-standing body
- H01M4/8896—Pressing, rolling, calendering
-
- 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
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ガス拡散電極の製造方法の改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for manufacturing a gas diffusion electrode.
（従来技術とその問題点）
従来、燃料電池等に用いられているガス拡散電極の製法
として、ロール法、ミリング法、Ｄｒジブレード法があ
るが、それぞれ単位面積あたりの触媒量の調整が比較的
難しく、しかも、得られた電極の初期性能および寿命が
不充分である。(Prior art and its problems) Conventionally, there are the roll method, milling method, and Dr. giblade method as methods for manufacturing gas diffusion electrodes used in fuel cells, etc., but each method is relatively difficult to adjust the amount of catalyst per unit area. It is difficult, and the initial performance and lifetime of the obtained electrodes are unsatisfactory.
そこで、電極性能を向上させるための改良については盛
んに行われているが、その主なものとして、触媒金属を
微粒子化してできる限り均一分散させるための方法、導
電性粒子の改質により触媒金属の分散性を良くし利用率
を高める方法等の触媒活性および有効利用に関するもの
等である。Therefore, many improvements are being made to improve electrode performance, but the main ones include methods to make the catalytic metal into fine particles and disperse it as uniformly as possible, and methods to improve the catalytic metal by modifying conductive particles. These topics relate to catalytic activity and effective utilization, such as methods to improve the dispersibility of and increase the utilization rate.
上記の種々の研究から、ガス拡散電極の触媒層をできる
限り均一にする方法が検討されているが、例えばロール
法によるもので白金担持触媒を用いた電極では電極特性
として、燃料電池用半電池試験の電位が７２０ｍｖ、＠
２００ｍＡ／ｃ＋＋！程度で、ライフテストでは１５ｍ
ｖ／１００時間程度の電圧低下が生じてしまうという欠
点があり、他の方法でもほぼ同様の結果である。Based on the various studies mentioned above, methods to make the catalyst layer of gas diffusion electrodes as uniform as possible are being considered. The test potential is 720 mv, @
200mA/c++! It is about 15m in the life test.
There is a drawback that a voltage drop of about v/100 hours occurs, and other methods have almost the same results.
（発明の目的）
本発明は、上記従来の欠点を解決するためになされたも
ので、ガス拡販電極の触媒層を均一にかつ、高い性能を
持った電極を形成することで触媒の分散性を高め、電極
特性を向上させるとともに、安定性のあるガス拡散層を
得る方法を提供するものである。(Object of the Invention) The present invention has been made to solve the above-mentioned conventional drawbacks, and it improves the dispersibility of the catalyst by making the catalyst layer of the gas sales promotion electrode uniform and forming an electrode with high performance. The object of the present invention is to provide a method for obtaining a gas diffusion layer with high stability and improved electrode properties.
（問題点を解決するための手段）
本発明は、撥水処理された導電性カーボンペーパから成
るガス拡散層の片側面に、触媒担持カーボン粉末とポリ
テトラフルオロエチレン粉末とアルコールを含む脱イオ
ン水または蒸留水から成る混合溶液を攪拌下で、該撥水
処理された導電性カーボンペーパを濾過面に介して吸引
濾過して触媒担持カーボン粉末とポリテトラフルオロエ
チレンとから成る粉末を付着させ、次いで冷間プレスを
して圧着し、さらに熱間プレスまたは焼成することを特
徴とするガス拡散電極の製造方法である。(Means for Solving the Problems) The present invention provides deionized water containing catalyst-supported carbon powder, polytetrafluoroethylene powder, and alcohol on one side of a gas diffusion layer made of water-repellent conductive carbon paper. Alternatively, a mixed solution of distilled water is suction-filtered through the water-repellent conductive carbon paper through the filtration surface while stirring to deposit a powder of catalyst-supported carbon powder and polytetrafluoroethylene, and then This is a method for manufacturing a gas diffusion electrode, which is characterized by cold pressing and crimping, followed by hot pressing or firing.
以下、本発明の詳細について説明する。The details of the present invention will be explained below.
ガス拡散電極のガス拡販層は導電性カーボン粉末をテト
ラフルオロエチレンで撥水処理を行ったものを用い、次
いで、カーボン粉末に白金等の触媒となる金属を担持さ
せた粉末（以下「触媒担持カーボン粉末」という。）と
テトラフルオロエチレン（以下ｒＰＴＦＥ」という。〉
を４０〜６０％を混合した粉末をアルコールを含む脱イ
オン水または蒸留水中に攪拌して分散させ混合溶液とす
る。The gas promotion layer of the gas diffusion electrode is made of conductive carbon powder treated with water repellent treatment with tetrafluoroethylene. ) and tetrafluoroethylene (hereinafter referred to as "rPTFE").
A mixed solution of 40 to 60% of the powder is stirred and dispersed in deionized water or distilled water containing alcohol to form a mixed solution.
上記の撥水処理された導電性カーボンペーパを吸引濾過
装置の濾過面にまえもってアルコールを含む脱イオン水
または蒸留水を用いて密着させておき、僅かに吸引させ
た状態で該混合溶液を加える。The above-mentioned water-repellent conductive carbon paper is brought into close contact with the filtration surface of the suction filtration device using deionized water or distilled water containing alcohol in advance, and the mixed solution is added under slight suction.
次いで、吸引量を高めて触媒担持カーボン粉末とＰＴＦ
Ｅの粉末を撥水処理された導電性カーボンペーパの片側
面に付着させる。Next, increase the amount of suction to remove the catalyst-supported carbon powder and PTF.
Powder E is attached to one side of a water-repellent conductive carbon paper.
この際吸引中は該混合溶液を適度の速度で攪拌を続けて
おく。At this time, the mixed solution is continued to be stirred at an appropriate speed during suction.
アルコールは親水性で表面張力の小さいものがよく、メ
チルアルコール、エチルアルコール、プロピルアルコー
ル等である。The alcohol is preferably hydrophilic and has a low surface tension, such as methyl alcohol, ethyl alcohol, propyl alcohol, etc.
また、アルコールの加える割合は脱イオン水または蒸留
水に対して５％程度であることが好ましく、撥水処理さ
れた導電性カーボンペーパを吸引濾過装置の濾過面にま
えもって密着させておくために用いる、アルコールを含
む脱イオン水または蒸留水も同じ割合のものがよい。In addition, the ratio of alcohol added is preferably about 5% to deionized water or distilled water, and is used to make the water-repellent conductive carbon paper adhere to the filtration surface of the suction filtration device in advance. , deionized water or distilled water containing alcohol should also be used in the same proportions.
アルコールを用いる理由は、ＰＴＦＥ粉末の表面を僅か
に親水性とし脱イオン水または蒸留水中で均一分散させ
るためであり、アルコールの割合が多くなるとＰＴＦＥ
の持つ特性が失われるばかりでなく、撥水処理された導
電性カーボンペーパの撥水性をもそこなうので好ましく
ない。The reason for using alcohol is to make the surface of the PTFE powder slightly hydrophilic so that it can be uniformly dispersed in deionized water or distilled water.
This is not preferable because it not only loses its properties but also impairs the water repellency of the water-repellent treated conductive carbon paper.
また、触媒担持カーボン粉末とＰＴＦＥの粉末の川は任
意とする触媒層の厚みから求めればよいが、該触媒担持
カーボン粉末とＰＴＦＥの粉末の慴がアルコールを含む
脱イオン水または蒸留水に対する割合は０．３重量％以
下であることが好ましい。In addition, the amount of catalyst-supported carbon powder and PTFE powder can be determined from the thickness of an arbitrary catalyst layer, but the ratio of the catalyst-supported carbon powder and PTFE powder to deionized water or distilled water containing alcohol is It is preferably 0.3% by weight or less.
次いで、触媒担持カーボン粉末とＰＴＦＥの粉末を田水
処理された導電性カーボンペーパの片側面に付着させた
ものを、吸引濾過装置の吸引を止めたのらに取り出し、
まず、冷間プレスする、圧力は５０ｋｇ／ｃｎ程度で１
５秒間を４回行う。Next, the catalyst-supported carbon powder and PTFE powder adhered to one side of the rice-treated conductive carbon paper were taken out after the suction of the suction filtration device was stopped.
First, cold press at a pressure of about 50 kg/cn.
Do 4 times for 5 seconds.
該圧力と時間は触媒層の厚みにより多少の変化をさせる
ことは言うまでもない。It goes without saying that the pressure and time will vary somewhat depending on the thickness of the catalyst layer.
上記冷間圧着させる理由は、吸引濾過により均一に触媒
担持カーボン粉末とＰＴＦＥの粉末を付着させた状態を
維持させて撥水処理された導電性カーボンペーパの片側
面圧着させるためである。The reason for the above-mentioned cold press bonding is to keep the catalyst-supporting carbon powder and PTFE powder uniformly adhered by suction filtration and press the water-repellent conductive carbon paper on one side thereof.
次いで、熱間プレスを温度３５０℃前後で圧力は５０ｋ
ｇ／ｃＩ＋！程度とし時間は５秒程度で行うことで目的
とするガス拡散電極が得られる。Next, hot press at a temperature of around 350°C and a pressure of 50k.
g/cI+! The desired gas diffusion electrode can be obtained by performing the process for about 5 seconds.
あるいは、不活性ガス中で、３５０℃前後で１０分間程
度焼成しても目的とするガス拡散電極が得られる。Alternatively, the desired gas diffusion electrode can be obtained by baking in an inert gas at around 350° C. for about 10 minutes.
本発明の方法によれば、電極特性として例えば白金担持
触媒での結果では７５０ｍｖ、 ２００ｍＡ ／ ｃｎ
ｆが得られ、しかもライフテストでは５ｍｖ／１０００
時間という安定した電極である。According to the method of the present invention, the electrode characteristics are, for example, 750 mV and 200 mA/cn for a platinum supported catalyst.
f is obtained, and the life test is 5mv/1000
Time is a stable electrode.
以下、本発明の実施例について記載するが、該実施例は
本発明を限定するものではない。Examples of the present invention will be described below, but the examples do not limit the present invention.
（実施例）
白金触媒（６０重量％）とＰＴＦＥ（４０重量％）の混
合粉末４２５＋＋＋ｇにエチルアルコール２０−を加え
て攪拌しながら蒸留水４００ｍｆを加えた混合粉末溶液
を攪拌し続けておき、撥水処理された導電性カーボンペ
ーパ（５０ｃａｆ）を吸引濾過装置の濾過面にエチルア
ルコール２０ｍｊ！と蒸留水４００−を混合した溶液で
密着させておいたところへ、該混合粉末溶液を注入して
攪拌しながら吸引して撥水処理された導電性カーボンペ
ーパ上に付着させた。(Example) A mixed powder solution of 425+++g of mixed powder of platinum catalyst (60% by weight) and PTFE (40% by weight) was added with 20-g of ethyl alcohol, and while stirring, 400mf of distilled water was added to the mixed powder solution. Water-treated conductive carbon paper (50 caf) was placed on the filter surface of the suction filtration device with 20 mj of ethyl alcohol! The mixed powder solution was injected into the area that had been brought into close contact with a mixed solution of 400% of distilled water and 400% of distilled water, and was suctioned while stirring to adhere to the water-repellent conductive carbon paper.
次いで、室温で５０ｋｇ／ｃｄの圧力で１５秒間を４回
プレスしたのち、３５０℃、５ ｋｇ ／ ｃｄ、５秒
で熱間プレスして白金０．５ｍｇ／ｃｍのガス拡散電極
を得た。Next, it was pressed four times for 15 seconds at a pressure of 50 kg/cd at room temperature, and then hot pressed at 350° C. and 5 kg/cd for 5 seconds to obtain a gas diffusion electrode with platinum of 0.5 mg/cm.
この電極を燃料電池用半電池試験をしたところ２００ｍ
Ａ／ｃｆｆｌにて、７５０ｍｖの電位が得られ、耐久試
験では５ｍｖ／１０００時間の変化であった。When this electrode was subjected to a half-cell test for fuel cells, the distance was 200 m.
A potential of 750 mv was obtained at A/cffl, and the change was 5 mv/1000 hours in the durability test.
（従来例）
白金触媒（６０重量％）とＰＴＦＥ（４０重量％）の混
合粉末８５０ｍｇにソルベントナフサ１．５−を加えて
充分にねりあわせてローラにてＯ，ｌ ｍｍの厚さにし
、２００℃で１時間乾燥したのち、撥水処理された導電
性カーボンペーパ（５０ｃｎｆ）上に合わせて、３５０
℃、５０ ｋｇ／ｃｍ、５秒で熱間プレスして圧着した
のち撥水処理された導電性カーボンペーパ（５０ｃｒｄ
）より出ている部分をカットして白金０．５ｍｇ／ｃｎ
ｆのガス拡散電極を得た。(Conventional Example) Add 1.5-mg of solvent naphtha to 850 mg of mixed powder of platinum catalyst (60% by weight) and PTFE (40% by weight), knead thoroughly, and roll to a thickness of 0.1 mm using a roller. After drying at ℃ for 1 hour, a total of 350
℃, 50 kg/cm, 5 seconds, conductive carbon paper (50 crd
) Cut the part sticking out and add 0.5mg/cn of platinum.
A gas diffusion electrode of f was obtained.
この電極を燃料電池用半電池試験をしたところ２００
ｍ Ａ／ｃ＋＋ｆにて、？２０ｍｖの電位が得られ、耐
久試験では１５ｍｖ／１００時間の変化であった。When this electrode was subjected to a half-cell test for fuel cells, the result was 200.
At m A/c++f? A potential of 20 mv was obtained, and in the durability test, the change was 15 mv/100 hours.
（発明の効果）
本発明は、従来の欠点を解決するために、ガス拡散電極
の触媒層をアルコールを含む蒸留水を用い吸引濾過する
ことや、冷間プレスすること等で均一なものにすること
ができ、電極特性の優れたガス拡散電極を得ることがで
き、従来法では得られなかった電位と長時間安定した電
位を保つという効果があり、ガス拡販電極の利用拡大に
大きく貢献するものである。(Effects of the Invention) In order to solve the conventional drawbacks, the present invention makes the catalyst layer of the gas diffusion electrode uniform by suction filtration using distilled water containing alcohol, cold pressing, etc. It is possible to obtain a gas diffusion electrode with excellent electrode properties, and it has the effect of maintaining a stable potential for a long time, which is a potential that could not be obtained with conventional methods, and will greatly contribute to the expansion of the use of gas sales electrodes. It is.
Claims (1)
拡散層の片側面に、触媒担持カーボン粉末とポリテトラ
フルオロエチレン粉末とアルコールを含む脱イオン水ま
たは蒸留水から成る混合溶液を攪拌下で、該撥水処理さ
れた導電性カーボンペーパを濾過面に介して吸引濾過し
て触媒担持カーボン粉末とポリテトラフルオロエチレン
とから成る粉末を付着させ、次いで冷間プレスをして圧
着し、さらに熱間プレスまたは焼成することを特徴とす
るガス拡散電極の製造方法。1. On one side of a gas diffusion layer made of water-repellent conductive carbon paper, a mixed solution of catalyst-supported carbon powder, polytetrafluoroethylene powder, and deionized or distilled water containing alcohol is stirred. The water-repellent conductive carbon paper is suction-filtered through the filtration surface to adhere powder consisting of catalyst-supported carbon powder and polytetrafluoroethylene, then cold-pressed to bond, and then hot-pressed. A method for producing a gas diffusion electrode, the method comprising pressing or firing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63270568A JPH02117068A (en) | 1988-10-26 | 1988-10-26 | Manufacture of gas diffusion electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63270568A JPH02117068A (en) | 1988-10-26 | 1988-10-26 | Manufacture of gas diffusion electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02117068A true JPH02117068A (en) | 1990-05-01 |
Family
ID=17487969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63270568A Pending JPH02117068A (en) | 1988-10-26 | 1988-10-26 | Manufacture of gas diffusion electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02117068A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10151134B4 (en) * | 2000-10-17 | 2012-07-05 | Toyota Jidosha K.K. | Diffusion layer for a fuel cell and a method for producing the same |
| JP2017117584A (en) * | 2015-12-22 | 2017-06-29 | パナソニック株式会社 | Electrode manufacturing method and method of manufacturing film electrode assembly |
| WO2021070652A1 (en) * | 2019-10-10 | 2021-04-15 | 東レ株式会社 | Carbon fiber sheet and method for producing same |
-
1988
- 1988-10-26 JP JP63270568A patent/JPH02117068A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10151134B4 (en) * | 2000-10-17 | 2012-07-05 | Toyota Jidosha K.K. | Diffusion layer for a fuel cell and a method for producing the same |
| JP2017117584A (en) * | 2015-12-22 | 2017-06-29 | パナソニック株式会社 | Electrode manufacturing method and method of manufacturing film electrode assembly |
| WO2021070652A1 (en) * | 2019-10-10 | 2021-04-15 | 東レ株式会社 | Carbon fiber sheet and method for producing same |
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