JPH0941181A - Production of gas diffusion electrode - Google Patents
Production of gas diffusion electrodeInfo
- Publication number
- JPH0941181A JPH0941181A JP7216535A JP21653595A JPH0941181A JP H0941181 A JPH0941181 A JP H0941181A JP 7216535 A JP7216535 A JP 7216535A JP 21653595 A JP21653595 A JP 21653595A JP H0941181 A JPH0941181 A JP H0941181A
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- JP
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- Prior art keywords
- electrode
- gas diffusion
- slurry
- diffusion electrode
- water
- Prior art date
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- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、食塩電解の酸素陰
極、亡硝電解の電極等に用いるガス拡散電極の製造方法
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 gas diffusion electrode used as an oxygen cathode for salt electrolysis, an electrode for denitration electrolysis, and the like.
【０００２】[0002]
【従来の技術】先ず、ガス拡散電極の機能と構造の概要
をイオン交換膜法で塩化ナトリウム水溶液を電解する場
合に陰極に使用するガス拡散電極（酸素陰極）を例とし
て説明する。通常イオン交換膜法電解は、陽イオン交換
膜であるイオン交換膜により陽極室と陰極室とに区画さ
れた電解槽で行われ、この電解槽の陽極を有する陽極室
には塩化ナトリウム水溶液が、陰極を有する陰極室には
苛性ソーダ水溶液が入っている。この電解槽の１種に陰
極として酸素陰極を用いるものがあり、この種の電解槽
では、酸素陰極を有し苛性ソーダ水溶液を入れた電解液
室と該酸素陰極に酸素含有ガスを供給するガス供給室を
備えた陰極室を有している。しかして、電解槽の両電極
間に通電して電解する際に、酸素陰極（素材が多孔質体
からなりガス供給室から酸素含有ガスが供給される）を
用いて電解することにより、陰極で酸素還元反応が起こ
り、陰極電位が低下するため、電解電圧が著しく低減さ
れるという利点を有する。2. Description of the Related Art First, an outline of the function and structure of a gas diffusion electrode will be described using a gas diffusion electrode (oxygen cathode) used as a cathode when an aqueous sodium chloride solution is electrolyzed by an ion exchange membrane method. Usually, ion exchange membrane method electrolysis is performed in an electrolytic cell partitioned into an anode chamber and a cathode chamber by an ion exchange membrane which is a cation exchange membrane, and an aqueous solution of sodium chloride is placed in an anode chamber having an anode of this electrolytic cell. A cathodic compartment having a cathode contains an aqueous solution of caustic soda. One type of this electrolytic cell uses an oxygen cathode as a cathode. In this type of electrolytic cell, an electrolytic solution chamber having an oxygen cathode and containing a caustic soda aqueous solution and a gas supply for supplying an oxygen-containing gas to the oxygen cathode are provided. It has a cathode compartment with a compartment. When electricity is applied between the two electrodes of the electrolytic cell and electrolysis is performed, the electrolysis is performed using an oxygen cathode (a material is made of a porous body and an oxygen-containing gas is supplied from a gas supply chamber). Since the oxygen reduction reaction occurs and the cathode potential decreases, there is an advantage that the electrolysis voltage is significantly reduced.
【０００３】酸素陰極は多孔性の導体を主体とした薄層
で構成されており、酸素含有ガス側は疎水性であり、電
解液側は親水性で、かつ全体として通気性を有し、かつ
電解液が浸透し得るものであり、電極の電解液（苛性ソ
ーダ水溶液）に接する側面には導体からなる金網などで
つくられた集電体をその内部に有し、触媒を担持してい
る。上記多孔性の導体には活性炭が通常使用され、その
微細孔には前記触媒（白金などの貴金属系からなる）が
担持されている。酸素含有ガス供給側面は電解液の漏洩
が起こらない撥水性の多孔性の薄層で構成されている。
上記撥水性の多孔性の薄層は通常は酸化還元反応に耐性
のあるフッ素樹脂系のポリマーの微粒子を主体として成
形されている。[0003] The oxygen cathode is composed of a thin layer mainly composed of a porous conductor, the oxygen-containing gas side is hydrophobic, the electrolyte side is hydrophilic, and has air permeability as a whole. The electrolyte can penetrate the electrode. A current collector made of a wire mesh or the like made of a conductor is provided inside the side surface of the electrode in contact with the electrolyte (aqueous sodium hydroxide solution), and carries a catalyst. Activated carbon is usually used for the porous conductor, and the catalyst (made of a noble metal such as platinum) is supported in the fine pores. The oxygen-containing gas supply side surface is formed of a water-repellent porous thin layer in which no leakage of the electrolyte occurs.
The water-repellent porous thin layer is usually formed mainly of fine particles of a fluororesin-based polymer having resistance to a redox reaction.
【０００４】上記触媒活性を有する多孔性の薄層は、電
解液に接する親水性面から撥水性の多孔性の薄層へと段
階的に変わるように親水性カーボン、撥水性カーボン、
フッ素樹脂微粒子などを混合成形し一体化されている。
従って多孔性の酸素陰極は、酸素含有ガス供給側面から
電解液に接する側面へ効率よく酸素含有ガスを供給する
ことができ、また電解液に接する側面からは電解液が電
極内に容易に浸透拡散する。かくして、この酸素陰極内
で電解液に接する側面から供給されたナトリウムイオン
と上記触媒の存在下で水は酸化され水酸基となり、苛性
ソーダが生成する。また、以前には塩化ナトリウム水溶
液の電解において陰極で発生した水素は、酸素陰極を使
用した場合には発生せず、従って電解電圧の低下が可能
となる。以上が食塩電解を例とした酸素陰極の機能と構
造の概要であり、一般的なガス拡散電極の機能と構造も
以上説明したものと類似したものである。[0004] The porous thin layer having catalytic activity is formed of hydrophilic carbon, water-repellent carbon, and water-repellent carbon so as to gradually change from a hydrophilic surface in contact with the electrolyte to a water-repellent porous thin layer.
Fluororesin fine particles are mixed and molded and integrated.
Therefore, the porous oxygen cathode can efficiently supply the oxygen-containing gas from the oxygen-containing gas supply side to the side in contact with the electrolyte, and the electrolyte easily permeates and diffuses into the electrode from the side in contact with the electrolyte. I do. Thus, in the oxygen cathode, the water is oxidized to hydroxyl groups in the presence of the sodium ion and the catalyst supplied from the side in contact with the electrolyte, and caustic soda is generated. Also, hydrogen previously generated at the cathode in the electrolysis of an aqueous solution of sodium chloride is not generated when an oxygen cathode is used, so that the electrolysis voltage can be reduced. The above is the outline of the function and structure of the oxygen cathode using salt electrolysis as an example, and the function and structure of a general gas diffusion electrode are similar to those described above.
【０００５】従来のガス拡散電極は、液部に接している
側は、液体の浸透できる微細な孔を有する親液層、気体
部に接している側は、液体が洩れずガスは浸透できる微
細な孔を有する撥水性層とし、これらを金網などでつく
られた集電体を介して積層してなるものである。最近で
は触媒活性を有する多孔性の薄層の親液層から撥水性層
への変化は段階的に、好ましくは連続的に変わるよう
に、液部に接して液体の浸透できる微細な孔を有する親
液部（通路）と気体部に接して気体の出入が可能な微細
な孔を有する撥水部（通路）が入り組み接し合って混在
している反応層を金属網に張り合わせたものとなってき
ている。In the conventional gas diffusion electrode, the side in contact with the liquid portion has a lyophilic layer having fine pores through which liquid can penetrate, and the side in contact with the gas portion has fine particles through which gas can penetrate without leaking liquid. A water-repellent layer having fine holes is formed by laminating them through a current collector made of a wire mesh or the like. In recent years, the change from the lyophilic layer to the water-repellent layer of a porous thin layer having catalytic activity has fine pores that can penetrate the liquid in contact with the liquid part so that it changes stepwise, preferably continuously. A water-repellent portion (passage) having fine holes through which a lyophilic portion (passage) and a gas portion can come and go in contact with the gas portion enters and comes into contact with each other. Is coming.
【０００６】しかし、前記多孔性の薄層を親液性から撥
水性へと段階的に、あるいは連続的に変えるために行わ
れるガス拡散電極の製造方法は、反応層原料やガス拡散
層原料を各々水溶液に分散させた後、濾過乾燥して、ソ
ルベントナフサで餅状にした後、ロールで板状に成形し
たものを集電体の金属網と共に金属製の治具に入れ、多
くの場合２枚の前記板状体の間に集電体の金属網を挿入
した形で治具に入れ、治具と共に３８０℃、６００ｋｇ
／ｃｍ2 で約３秒間というような条件でホットプレスし
てガス拡散電極を成形する方法である。ところで、この
ガス拡散電極の製造方法は、工程が煩雑で、かつ作業性
が悪く、量産性がない。また、治具を使用するので、大
型化が困難であり、しかもホットプレスするのでは連続
製造できないので、生産性が低いという欠点がある。さ
らにまた、集電体の金属網は電極物質との接触面積が小
さいので、集電効率が悪く、電解性能が不十分である。However, the method of manufacturing a gas diffusion electrode for changing the porous thin layer from lyophilic to water-repellent in a stepwise or continuous manner involves the use of a reaction layer raw material or a gas diffusion layer raw material. Each of them is dispersed in an aqueous solution, filtered, dried, formed into a rice cake with a solvent naphtha, and then formed into a plate with a roll and placed in a metal jig together with a metal net of a current collector. Insert the metal net of the current collector between the two plate-like bodies into a jig, and put it together with the jig at 380 ° C and 600 kg.
This is a method in which a gas diffusion electrode is formed by hot pressing under conditions such as about 3 seconds / cm 2 . By the way, this method of manufacturing a gas diffusion electrode requires complicated steps, poor workability, and lacks mass productivity. In addition, since a jig is used, it is difficult to increase the size, and continuous production cannot be performed by hot pressing, so that the productivity is low. Furthermore, since the metal net of the current collector has a small contact area with the electrode material, the current collection efficiency is poor and the electrolytic performance is insufficient.
【０００７】[0007]
【発明が解決しようとする課題】本発明の目的は、強度
が高く、大型化が可能であり、しかも集電効率が良く、
電極性能にも優れたガス拡散電極を、簡単な工程で作業
性が良くて量産に適した方法で製造する方法を提供しよ
うとするものである。SUMMARY OF THE INVENTION It is an object of the present invention to provide high strength, large size, and high current collection efficiency.
It is an object of the present invention to provide a method for manufacturing a gas diffusion electrode having excellent electrode performance by a simple process with good workability and suitable for mass production.
【０００８】[0008]
【課題を解決するための手段】前記目的は、本発明のガ
ス拡散電極の製造方法によって達成される。すなわち、
電極触媒作用を有する触媒と親水性カーボンブラックと
撥水性カーボンブラックと水と粉末状ポリテトラフルオ
ロエチレンとを混合して泥漿を作製し、次に電気伝導性
多孔体にこの泥漿を乾燥することなく片面あるいは両面
から充填し、乾燥前あるいは乾燥後に該泥漿から前記分
散剤を除去し、乾燥し、焼結することを特徴とするガス
拡散電極の製造方法である。ここで、粉末状ポリテトラ
フルオロエチレンは、微細な粉体であることが好まし
く、また水など分散媒中に分散された分散液の形態とな
ったものでも良い。また、電気伝導性多孔体としては、
金属多孔体が好ましく、例えばニッケルや銀の多孔体等
を挙げることができるが、ウレタンなどプラスチックの
連続発泡体にニッケルをメッキしたもの、あるいはプラ
スチックの連続発泡体にニッケルをメッキした後これを
焼結してニッケル多孔体としたもの等であっても良い。
この電気伝導性多孔体は集電体として作用するものであ
り、従来の金網の場合より電極物質との接触面積は大き
い。The above object is achieved by a method for manufacturing a gas diffusion electrode according to the present invention. That is,
A slurry having an electrode catalyst, a hydrophilic carbon black, a water-repellent carbon black, water, and powdered polytetrafluoroethylene are mixed to form a slurry, and then the slurry is dried on an electrically conductive porous body without drying. A method for producing a gas diffusion electrode, which comprises filling from one side or both sides, removing the dispersant from the slurry before or after drying, drying and sintering. Here, the powdered polytetrafluoroethylene is preferably a fine powder, and may be in the form of a dispersion dispersed in a dispersion medium such as water. In addition, as the electrically conductive porous body,
A porous metal body is preferable.For example, a porous body of nickel or silver can be mentioned. It may be one that is tied into a nickel porous body.
This electrically conductive porous body acts as a current collector, and has a larger contact area with the electrode material than in the case of the conventional wire mesh.
【０００９】[0009]
【発明の実施の形態】前記電気伝導性多孔体（以下単に
金属多孔体ということもある）に、前記泥漿を充填する
方法は、孔中にできる限り空気が閉じ込められないよう
に泥漿を充填すれば良く、その方法の例としては、片面
から泥漿をロールやヘラ等で押し込めても良く、泥漿を
気体で加圧するなどして押し込めても良い。また、上面
から空気を抜くようにするなどして両側面から押し込め
ても良い。前記電極物質は、金属多孔体に充填する前に
十分に混練され均一に混合しておくものとする。また、
電極物質は金属多孔体に充填する前に濾過しておくこと
が好ましく、電極物質の濾過は、混練された後に行って
も良いが、混練する前に各素材について個別に行ってお
いても良い。なおここで、本発明のガス拡散電極の製造
において電極物質の材料の構成範囲は親水性カーボンブ
ラックは１０〜５０重量部、撥水性カーボンブラックは
１０〜５０重量部、粉末状ポリテトラフルオロエチレン
は１０〜５０重量部で残部は水である。また電極物質中
に担持させる触媒は１〜９０重量％の範囲である。BEST MODE FOR CARRYING OUT THE INVENTION The method for filling the electrically conductive porous body (hereinafter sometimes simply referred to as a metal porous body) with the slurry is to fill the slurry with as little air as possible in the pores. As an example of the method, the slurry may be pushed in from one side with a roll or a spatula, or the slurry may be pushed in with gas or the like. Alternatively, the air may be pushed in from both sides by bleeding air from the upper surface. The electrode substance is sufficiently kneaded and uniformly mixed before filling the porous metal body. Also,
The electrode material is preferably filtered before filling the porous metal body, and the filtration of the electrode material may be performed after kneading, or may be individually performed on each material before kneading. . Here, in the production of the gas diffusion electrode of the present invention, the constituent range of the material of the electrode substance is 10 to 50 parts by weight of hydrophilic carbon black, 10 to 50 parts by weight of water-repellent carbon black, and powdery polytetrafluoroethylene. 10 to 50 parts by weight, with the balance being water. The amount of the catalyst supported on the electrode material is in the range of 1 to 90% by weight.
【００１０】電極は、金属多孔体に電極物質を充填・成
形した後、必要により圧密化し、焼結して完成するが、
電極物質を充填・成形した段階で泥漿から分散のために
使用した分散剤を洗浄・除去した後焼結して完成する。
分散剤としては、通常界面活性剤が使用される。使用す
る界面活性剤としては、ノニオン、アニオン、カチオン
のいずれの界面活性剤でも、単独あるいは混合して使用
できるが、ノニオン界面活性剤がこのましい。また、前
記界面活性剤は電極を製造する際に使用する材料、例え
ばポリテトラフルオロエチレンの懸濁水溶液、中に含ま
れるもの等であっても良い。An electrode is completed by filling and molding an electrode material into a porous metal body, compacting if necessary, and sintering.
It is completed by washing and removing the dispersant used for dispersion from the slurry at the stage of filling and molding the electrode material and then sintering.
As the dispersant, a surfactant is usually used. As the surfactant to be used, any of nonionic, anionic and cationic surfactants can be used alone or as a mixture, but nonionic surfactants are preferred. Further, the surfactant may be a material used in manufacturing an electrode, for example, a surfactant contained in an aqueous suspension of polytetrafluoroethylene.
【００１１】前記本発明のガス拡散電極の製造方法は、
電極触媒作用を有する触媒と前記電極物質からの泥漿を
金属多孔体の孔に、乾燥しないように充填する方法であ
るので、泥漿は金属多孔体内に均一に充填されて所要の
厚さのガス拡散電極層を形成する。しかも、簡単な工程
で作業性が良くて量産に適し、大型のガス拡散電極を連
続的に能率良く製造することを可能にする。本発明の骨
子は、 従来のガス拡散電極の電極層構成のように液部に接す
る親液層、気体部に接している撥水性層のように、組成
の異なる電極物質を何層にも積層するという、複雑な工
程を要しない。しかもガス拡散電極として優れた機能を
発揮する。 簡単な工程で量産に適し、大型のガス拡散電極を製造
できる。という極めてすぐれた製造方法ということであ
る。また、本発明においては、前記泥漿をそのまま金属
多孔体に充填させることが重要である。もし、充填前に
泥漿を乾燥させると泥漿内の粉末状ポリテトラフルオロ
エチレンがフィブリル化して金属多孔体に充填させるこ
とができなくなる。The method for manufacturing a gas diffusion electrode according to the present invention includes:
Since it is a method of filling the pores of the metal porous body with the catalyst having the electrocatalytic action and the slurry from the electrode material so as not to dry, the slurry is uniformly filled in the metal porous body and the gas diffusion of the required thickness is performed. An electrode layer is formed. Moreover, the workability is good in a simple process, suitable for mass production, and it is possible to continuously and efficiently manufacture a large gas diffusion electrode. The gist of the present invention is to laminate multiple layers of electrode materials having different compositions, such as a lyophilic layer in contact with the liquid part and a water-repellent layer in contact with the gas part, as in the conventional electrode structure of a gas diffusion electrode. Does not require a complicated process. In addition, it exhibits excellent functions as a gas diffusion electrode. It is suitable for mass production with a simple process, and a large gas diffusion electrode can be manufactured. This is an extremely excellent manufacturing method. In the present invention, it is important that the slurry is directly filled in the porous metal body. If the slurry is dried before filling, the powdery polytetrafluoroethylene in the slurry becomes fibrillated and cannot be filled in the porous metal body.
【００１２】[0012]
【実施例】以下実施例により本発明を具体的に説明す
る、ただし本発明は、これらの実施例のみに限定される
ものではない。EXAMPLES The present invention will be described in more detail with reference to the following examples, which, however, are not intended to limit the scope of the present invention.
【００１３】１．集電体（電気伝導性多孔体）の製造 ２００ｍｍ（縦）×３００ｍｍ（横）×２ｍｍ（厚み）
の硬質ポリウレタン発泡体の板を塩化ニッケルを用いて
５μｍの厚みに無電解メッキしたものを焼成して集電体
とする。 ２．電極物質の製造 組成物質 ｉ）触媒：微粉末銀 平均粒径 １μｍ ii) 親水性カーボンブラック（ＡＢ−１１；デンカブラ
ック）：平均粒径 ４００Å iii)撥水性カーボンブラック（ＡＢ− ７；デンカブラ
ック）：平均粒径 ５００Å iv) ポリテトラフルオロエチレン懸濁重合液（ポリフロ
ンディスパージョン、Ｄ−１；ダイキン工業製）：平均
粒径 ０．３μｍ 分散剤：Triton X-1001. Production of current collector (electrically conductive porous body) 200 mm (length) x 300 mm (width) x 2 mm (thickness)
The rigid polyurethane foam plate was subjected to electroless plating to a thickness of 5 μm using nickel chloride, followed by firing to obtain a current collector. 2. Production of electrode material Composition material i) Catalyst: fine powder silver, average particle size 1 μm ii) Hydrophilic carbon black (AB-11; Denka black): average particle size 400Å iii) Water-repellent carbon black (AB-7; Denka black) Iv) Polytetrafluoroethylene suspension polymerization solution (Polyflon dispersion, D-1; manufactured by Daikin Industries, Ltd.): Average particle size 0.3 μm Dispersant: Triton X-100
【００１４】泥漿作製工程 銀微粒子（平均粒径１μｍ、田中貴金属製）とＰＴＦＥ
（ディスパージョン、Ｄ−１；ダイキン工業製）と親水
性カーボンブラック（ＡＢ−１１、平均粒径 ４００
Å、試作品、電気化学工業製）と撥水性カーボンブラッ
ク（ＡＢ−７、平均粒径 ５００Å、試作品、電気化学
工業製）を重量比で２０：１：１：１の割合で混合した
ものをTriton X-100 ２０％を含む水溶液１００重量部
中に分散・混合し、ろ過して泥漿を得た。 ３．集電体中への電極物質の充填 前記泥漿を、銀発泡体中に径１０ｃｍのステンレスロー
ルで均一に押し込めた。乾燥後、アルコールで界面活性
剤のTriton X-100を取り除き、再び乾燥、３５０℃で１
０分間焼結し、電極を得た。電極を焼結する前にロール
等を用いて高密度化しても良い。以上は反応層のみから
なるガス拡散電極であるが、片面からＰＴＦＥと撥水性
カーボンブラックの４：６からなるガス供給層用の泥漿
を圧入して、反応層とガス供給層を持つガス拡散電極と
することもできる。Slurry making process Silver fine particles (average particle size 1 μm, made by Tanaka Kikinzoku) and PTFE
(Dispersion, D-1; manufactured by Daikin Industries) and hydrophilic carbon black (AB-11, average particle size 400)
試, prototype, manufactured by Denki Kagaku Kogyo) and water-repellent carbon black (AB-7, average particle size 500Å, prototype, manufactured by Denki Kagaku Kogyo) at a weight ratio of 20: 1: 1: 1. Was dispersed and mixed in 100 parts by weight of an aqueous solution containing 20% of Triton X-100, and filtered to obtain a slurry. 3. Filling of current collector with electrode material The slurry was uniformly pressed into a silver foam with a stainless roll having a diameter of 10 cm. After drying, the surfactant Triton X-100 was removed with alcohol, dried again, and dried at 350 ° C for 1 hour.
Sintering was performed for 0 minutes to obtain an electrode. The density may be increased using a roll or the like before sintering the electrode. The above is a gas diffusion electrode composed of only a reaction layer, but a gas diffusion electrode having a reaction layer and a gas supply layer is formed by press-fitting a gas supply layer composed of 4: 6 of PTFE and water-repellent carbon black from one side. It can also be.
【００１５】[0015]
【発明の効果】以上の説明の通り、本発明のガス拡散電
極の製造方法は、電極触媒作用を有する触媒と前記電極
物質からの泥漿を金属多孔体の孔に、乾燥しないように
充填する方法であるので、泥漿は金属多孔体内に均一に
充填されて所要の厚さの反応層またはガス拡散電極層を
形成する。しかも、製造にホットプレスを使用する必要
がなく、簡単な工程で作業性が良くて量産に適し、大型
のガス拡散電極を連続的に能率良く製造することができ
る。As described above, the method for manufacturing a gas diffusion electrode according to the present invention is a method for filling a pore of a metal porous body with a catalyst having an electrode catalytic action and a slurry from the electrode substance without drying. Therefore, the slurry is uniformly filled in the porous metal body to form a reaction layer or a gas diffusion electrode layer having a required thickness. Moreover, there is no need to use a hot press for the production, and the workability is good in a simple process, suitable for mass production, and a large gas diffusion electrode can be produced continuously and efficiently.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 古屋 長一 山梨県甲府市中村町２−14 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Choichi Furiya 2-14 Nakamuracho, Kofu City, Yamanashi Prefecture
Claims (1)
ボンブラックと撥水性カーボンブラックと水と粉末状ポ
リテトラフルオロエチレンとを分散剤を用いて分散・混
合して泥漿を作製し、次に電気伝導性多孔体にこの泥漿
を乾燥することなく片面あるいは両面から充填し、乾燥
前あるいは乾燥後に該泥漿から前記分散剤を除去し、乾
燥し、焼結することを特徴とするガス拡散電極の製造方
法。1. A slurry having an electrocatalyst, hydrophilic carbon black, water-repellent carbon black, water and powdered polytetrafluoroethylene dispersed and mixed with a dispersant to produce a slurry. Manufacturing the gas diffusion electrode, wherein the slurry is filled into the conductive porous body from one side or both sides without drying, the dispersant is removed from the slurry before or after drying, dried, and sintered. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7216535A JP2805458B2 (en) | 1995-08-03 | 1995-08-03 | Manufacturing method of gas diffusion electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7216535A JP2805458B2 (en) | 1995-08-03 | 1995-08-03 | Manufacturing method of gas diffusion electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0941181A true JPH0941181A (en) | 1997-02-10 |
| JP2805458B2 JP2805458B2 (en) | 1998-09-30 |
Family
ID=16689968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7216535A Expired - Fee Related JP2805458B2 (en) | 1995-08-03 | 1995-08-03 | Manufacturing method of gas diffusion electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2805458B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0928036A1 (en) * | 1998-01-02 | 1999-07-07 | De Nora S.P.A. | Carbon-cloth-based electrocatalytic gas diffusion electrodes of electrochemical cells and method of manufacture |
| WO2000029643A1 (en) * | 1998-11-12 | 2000-05-25 | Toagosei Co., Ltd. | Gas diffusion electrode material, process for producing the same, and process for producing gas diffusion electrode |
| WO2006000156A1 (en) * | 2004-06-23 | 2006-01-05 | Byd Company Limited | Gas diffusion electodes and membrane electrode assemblies for proton exchange membrane fuel cells |
| KR100762343B1 (en) * | 2004-06-23 | 2007-10-04 | 비와이디 컴퍼니 리미티드 | Gas Diffusion Electrodes and Membrane Electrode Assemblies for Proton Exchange Membrane Fuel Cells |
| US7396794B2 (en) * | 2001-02-21 | 2008-07-08 | Sony Corporation | Gas diffusive electrode body and method of manufacturing the same as well as electrochemical device |
| CN107970768A (en) * | 2017-11-20 | 2018-05-01 | 南开大学 | A kind of gas-diffusion electrode and preparation method thereof and NOxReforming unit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0346764A (en) * | 1989-07-14 | 1991-02-28 | Tanaka Kikinzoku Kogyo Kk | Formation method of reaction layer of gas diffusion electrode |
-
1995
- 1995-08-03 JP JP7216535A patent/JP2805458B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0346764A (en) * | 1989-07-14 | 1991-02-28 | Tanaka Kikinzoku Kogyo Kk | Formation method of reaction layer of gas diffusion electrode |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0928036A1 (en) * | 1998-01-02 | 1999-07-07 | De Nora S.P.A. | Carbon-cloth-based electrocatalytic gas diffusion electrodes of electrochemical cells and method of manufacture |
| WO2000029643A1 (en) * | 1998-11-12 | 2000-05-25 | Toagosei Co., Ltd. | Gas diffusion electrode material, process for producing the same, and process for producing gas diffusion electrode |
| EP1055748A1 (en) * | 1998-11-12 | 2000-11-29 | Toagosei Co., Ltd. | Gas diffusion electrode material, process for producing the same, and process for producing gas diffusion electrode |
| US6428722B1 (en) | 1998-11-12 | 2002-08-06 | Nagakazu Furuya | Gas diffusion electrode material, process for producing the same, and process for producing gas diffusion electrode |
| EP1055748A4 (en) * | 1998-11-12 | 2007-12-19 | Toagosei Co Ltd | Gas diffusion electrode material, process for producing the same, and process for producing gas diffusion electrode |
| US7396794B2 (en) * | 2001-02-21 | 2008-07-08 | Sony Corporation | Gas diffusive electrode body and method of manufacturing the same as well as electrochemical device |
| WO2006000156A1 (en) * | 2004-06-23 | 2006-01-05 | Byd Company Limited | Gas diffusion electodes and membrane electrode assemblies for proton exchange membrane fuel cells |
| KR100762343B1 (en) * | 2004-06-23 | 2007-10-04 | 비와이디 컴퍼니 리미티드 | Gas Diffusion Electrodes and Membrane Electrode Assemblies for Proton Exchange Membrane Fuel Cells |
| CN107970768A (en) * | 2017-11-20 | 2018-05-01 | 南开大学 | A kind of gas-diffusion electrode and preparation method thereof and NOxReforming unit |
| CN107970768B (en) * | 2017-11-20 | 2019-12-27 | 南开大学 | Gas diffusion electrode and preparation method thereof and NOxConversion device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2805458B2 (en) | 1998-09-30 |
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