JPH03295169A - Junction body of solid polymer electrolyte film and electrode - Google Patents
Junction body of solid polymer electrolyte film and electrodeInfo
- Publication number
- JPH03295169A JPH03295169A JP2095170A JP9517090A JPH03295169A JP H03295169 A JPH03295169 A JP H03295169A JP 2095170 A JP2095170 A JP 2095170A JP 9517090 A JP9517090 A JP 9517090A JP H03295169 A JPH03295169 A JP H03295169A
- Authority
- JP
- Japan
- Prior art keywords
- polymer electrolyte
- solid polymer
- electrolyte film
- catalyst
- electrolyte membrane
- 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
- 239000005518 polymer electrolyte Substances 0.000 title claims abstract description 29
- 239000007787 solid Substances 0.000 title claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 238000007731 hot pressing Methods 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims description 63
- 238000009792 diffusion process Methods 0.000 claims description 24
- 239000003792 electrolyte Substances 0.000 claims description 7
- 230000002209 hydrophobic effect Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 4
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 abstract description 2
- 229920006254 polymer film Polymers 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 23
- 210000004027 cell Anatomy 0.000 description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 13
- 239000000446 fuel Substances 0.000 description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 239000002245 particle Substances 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000036647 reaction Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- -1 platinum group metals Chemical class 0.000 description 3
- 229920000557 Nafion® Polymers 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 241000872198 Serjania polyphylla Species 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- YPTUAQWMBNZZRN-UHFFFAOYSA-N dimethylaminoboron Chemical compound [B]N(C)C YPTUAQWMBNZZRN-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- HJHVQCXHVMGZNC-JCJNLNMISA-M sodium;(2z)-2-[(3r,4s,5s,8s,9s,10s,11r,13r,14s,16s)-16-acetyloxy-3,11-dihydroxy-4,8,10,14-tetramethyl-2,3,4,5,6,7,9,11,12,13,15,16-dodecahydro-1h-cyclopenta[a]phenanthren-17-ylidene]-6-methylhept-5-enoate Chemical compound [Na+].O[C@@H]([C@@H]12)C[C@H]3\C(=C(/CCC=C(C)C)C([O-])=O)[C@@H](OC(C)=O)C[C@]3(C)[C@@]2(C)CC[C@@H]2[C@]1(C)CC[C@@H](O)[C@H]2C HJHVQCXHVMGZNC-JCJNLNMISA-M 0.000 description 1
- 239000000126 substance 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
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- 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】
〈産業上の利用分野〉
本発明は、固体高分子電解質膜と電極との接合体に関し
、燃料電池や水電解等に用いて好適なものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an assembly of a solid polymer electrolyte membrane and an electrode, and is suitable for use in fuel cells, water electrolysis, and the like.
〈従来の技術〉
燃料電池は、資源の枯渇問題を有する石化燃料を使う必
要がない上、騒音をほとんど発生せず、エネルギの回収
効率も他のエネルギ機関と較べて非常に高くできる等の
優れた特徴を持っているため、例えばビルディング単位
や工場単位の比較的小型の発電プラントとして利用され
ている。<Conventional technology> Fuel cells do not require the use of fossil fuels, which have resource depletion issues, generate almost no noise, and have very high energy recovery efficiency compared to other energy engines. Because of these characteristics, it is used as a relatively small power generation plant for each building or factory, for example.
近年、この燃料電池を車載用の内燃機関に代えて作動す
るモータの電源として利用し、とのモータにより車両等
を駆動することが考えられている。この場合に重要なこ
とは、反応によって生成する物質をできるだけ再利用す
ることは当然のこととして、車載用であることからも明
らかなように、余り大きな出力は必要でないものの、全
ての付帯設備と共に可能な限り小型であることが望まし
く、このような点から固体高分子電解質膜燃料電池が注
目されている。In recent years, it has been considered to use this fuel cell as a power source for a motor that operates in place of an internal combustion engine in a vehicle, and to drive a vehicle or the like with the motor. What is important in this case is that it is natural to reuse the substances produced by the reaction as much as possible, and as it is clear from the fact that it is for automotive use, although a large output is not required, It is desirable to be as small as possible, and from this point of view, solid polymer electrolyte membrane fuel cells are attracting attention.
ここで、−例として固体高分子電解質膜燃料電池本体の
基本構造を第３図を参照しながら説明する。同図に示す
ように、電池本体０１は固体高分子電解質膜０２の両側
にガス拡散電極０３Ａ、０３Ｂが接合されることによ咬
構成されている。そしてこの接合体は、固体高分子電解
質膜０２の両側にガス拡散電極０３Ａ、０３Ｂを合せた
後、ホットプレス等することにより製造される。また、
ガス拡散電極０３Ａ、０３Ｂはそれぞれ反応膜０４Ａ。Here, as an example, the basic structure of a solid polymer electrolyte membrane fuel cell main body will be explained with reference to FIG. As shown in the figure, the battery body 01 has a diagonal structure in which gas diffusion electrodes 03A and 03B are joined to both sides of a solid polymer electrolyte membrane 02. This assembled body is manufactured by placing the gas diffusion electrodes 03A and 03B on both sides of the solid polymer electrolyte membrane 02, and then hot pressing or the like. Also,
Gas diffusion electrodes 03A and 03B are each a reaction membrane 04A.
０４Ｂ及びガス拡散膜０５Ａ、０５Ｂが接合されたもの
であ抄、電解質！１Ｉ０２とｌよ反応膜０４Ａ、０４Ｂ
の表面が接触している。したがって、電池反応は主に電
解質膜０２と反応膜０４Ａ、０４Ｂとの間の接触面で起
こる。04B and gas diffusion membranes 05A and 05B are joined together, making it an electrolyte! 1I02 and l reaction membranes 04A, 04B
surfaces are in contact. Therefore, the battery reaction mainly occurs at the contact surface between the electrolyte membrane 02 and the reaction membranes 04A and 04B.
例えばガス拡散電極０３Ａを酸素極、ガス拡散電極０３
Ｂを水素極とし、各々のガス拡散膜０５Ａ、０５Ｂを介
して酸素、水素を反応膜０４Ａ、０４Ｂ側へ供給すると
、各反応膜０４Ａ、０４Ｂと電解質膜０２との界面で次
のような反応が起こる。For example, gas diffusion electrode 03A is an oxygen electrode, gas diffusion electrode 03
When B is used as a hydrogen electrode and oxygen and hydrogen are supplied to the reaction membranes 04A and 04B through the respective gas diffusion membranes 05A and 05B, the following reaction occurs at the interface between each reaction membrane 04A and 04B and the electrolyte membrane 02. happens.
反応膜０４Ａの界面：
０ ＋４ Ｈ”＋４ ｅ −＝２ ＨＯ反応膜０４Ｂの
界面：
２ Ｈ−４Ｈ”＋ ４ ｅ
ここで、４Ｈ”は電解質膜０２を通って水素屑から酸素
極へ流れるが、４ｅは負荷０６を通って水素極から酸素
極へ流れることになり、電気エネルギーが得られる。Interface of reaction membrane 04A: 0 + 4 H''+4 e -=2 Interface of HO reaction membrane 04B: 2 H-4H''+ 4 e Here, 4H'' flows from hydrogen scraps to the oxygen electrode through electrolyte membrane 02. , 4e flow from the hydrogen electrode to the oxygen electrode through the load 06, and electrical energy is obtained.
〈発明が解決しようとする課題〉
上述した構成の燃料電池本体０１では、電池反応は主に
、電解質膜０２と各反応！ｌ！０４Ａ。<Problems to be Solved by the Invention> In the fuel cell main body 01 having the above-mentioned configuration, the cell reactions are mainly caused by various reactions with the electrolyte membrane 02! l! 04A.
０４Ｂとの接触面で起こるので、電池性能を向上させる
には電極自体を大きくあるいは多層にしなければならな
いという問題がある。Since this occurs at the contact surface with 04B, there is a problem in that the electrode itself must be made larger or multilayered in order to improve battery performance.
すなわち、例えば燃料電池の小型化を追求するためには
、上述した電池本体０１の単位体積当りの電池反応の向
上が必須となる。これは、水電解等を行う場合にもｒｉ
８ｉＩ様である。That is, for example, in order to pursue miniaturization of fuel cells, it is essential to improve the cell reaction per unit volume of the cell body 01 described above. This also applies when performing water electrolysis, etc.
This is Mr. 8iI.
そして、単位体積当りの電池反応を向上させるためには
、例えば上記反応膜０４Ａ、０４Ｂの触媒担持量を増大
させるのが有効である。In order to improve the battery reaction per unit volume, it is effective, for example, to increase the amount of catalyst supported on the reaction membranes 04A and 04B.
しかし、上述した反応膜０４Ａ、０４Ｂは一般に、例え
ば白金系触媒若しくは白金系触媒を担持させた親水性カ
ーボン微粒子をフッ素樹脂等に分散させたものであり、
触媒担持量には限界があり、例えばＩＩＩＩｇ／ｄ程度
までである。However, the reaction membranes 04A and 04B described above are generally made by dispersing, for example, a platinum-based catalyst or hydrophilic carbon fine particles supporting a platinum-based catalyst in a fluororesin or the like.
There is a limit to the amount of catalyst supported, for example up to about IIIg/d.
本発明：よこのような事情に鑑み、燃料電池や水電解等
に用いた場合に電池反応効率を大幅に向上させるために
触媒担持量を増大させた、固体高分子電解質膜と電極と
の接合体を提供することを目的とする。The present invention: In view of the above circumstances, the present invention provides a bond between a solid polymer electrolyte membrane and an electrode, which has an increased amount of catalyst supported in order to significantly improve cell reaction efficiency when used in fuel cells, water electrolysis, etc. The purpose is to provide the body.
く課題を解決するための手段〉
前記目的を達成する本発明に係る固体高分子電解質膜と
電極との接合体は、両面に触媒を析出した固体高分子電
解質膜の両側に、必要に応じて内側に反応膜を有する２
枚のガス拡散膜を配した挾持体を、ホットプレスしてな
ることを特徴とする。Means for Solving the Problems〉 The assembly of a solid polymer electrolyte membrane and an electrode according to the present invention that achieves the above object includes a solid polymer electrolyte membrane on both sides of which a catalyst is deposited, as needed. 2 with a reaction membrane inside
It is characterized in that it is made by hot-pressing a clamping body on which two gas diffusion membranes are arranged.
本発明で固体高分子電解質膜とは水が共存しても液体に
ならない電解質膜をいい、好適なものとしてはパーフル
オロスルフォン酸ポリマー膜（ナフィオン：デュポン社
商品名）を挙げろことができるが、例えばスチレン系イ
オン交換膜などの一般のイオン交換膜も用箋ろことがで
きる。In the present invention, the solid polymer electrolyte membrane refers to an electrolyte membrane that does not become liquid even when water coexists, and a preferred example is a perfluorosulfonic acid polymer membrane (Nafion: trade name of DuPont). For example, general ion exchange membranes such as styrene-based ion exchange membranes can also be used.
このような固体高分子電解質膜の両面に白金系触媒を析
出させたものを得るには例えば待開昭５５−３８９３４
号公報に記載された方法を用いればよい。すなわち、固
体高分子電解質膜の一面側に触媒金属塩溶液を、他面側
に還元剤溶液をそれぞれ配することにより触媒金属塩溶
液側の面に触媒を析出し、その後、両側の溶液を逆にし
て他方の面に触媒を析出するようにする。なお、ここで
、触媒としては、好ましくは白金、ロジウム、パラジウ
ム、ルテニウムおよびイリジウムなどの白金族金属が用
いられ、また、還元剤としてはホウ素化ナトリウム、ジ
メチルアミノボランなどが用いられる。To obtain such a solid polymer electrolyte membrane with a platinum catalyst deposited on both sides, for example,
The method described in the publication may be used. That is, by disposing a catalyst metal salt solution on one side of the solid polymer electrolyte membrane and a reducing agent solution on the other side, the catalyst is deposited on the surface facing the catalyst metal salt solution, and then the solutions on both sides are inverted. so that the catalyst is deposited on the other side. Here, platinum group metals such as platinum, rhodium, palladium, ruthenium, and iridium are preferably used as the catalyst, and sodium boride, dimethylaminoborane, etc. are used as the reducing agent.
また、本発明で用いろガス拡散電極は、通気性はあるが
通水性は有さず導電性のあるものであれば特に限定され
ないが、一般に疎水性カーボン及びフッ素樹脂などの疎
水性樹脂からなる。Further, the gas diffusion electrode used in the present invention is not particularly limited as long as it has air permeability but no water permeability and is conductive, but it is generally made of hydrophobic resin such as hydrophobic carbon and fluororesin. .
本発明では、両面に触媒を析出させた固体高分子電解質
膜の両側にガス拡散膜を配した挾持体をホットプレスす
ることにより接合体とする。このときのホットプレスの
条件は接合する条件であれば特に限定されないが、−般
に、１２０〜２５０℃の温度で１００〜６００ｋｇ ／
ｃｌｒの圧力で行えばよい。In the present invention, a bonded body is obtained by hot pressing a sandwich body in which a gas diffusion membrane is arranged on both sides of a solid polymer electrolyte membrane on which a catalyst is deposited on both sides. The hot pressing conditions at this time are not particularly limited as long as they are bonding conditions, but - generally, the temperature is 120 to 250°C and the pressure is 100 to 600 kg/
It can be done at a pressure of clr.
また、このときガス拡散膜の内側に反応膜を配してもよ
い。すなわち、固体高分子電解質膜燃料電池等に用いら
れるガス拡散膜と反応膜とからなるガス拡散電極を用い
ることもできる。ここで、反応膜は触媒を担持させたも
のをいい、一般に、疎水性カーボン及びフッ素樹脂など
の疎水性樹脂に、触媒を担持させた親水性カーボン微粒
子若しくは触媒微粒子を担持させたもので、電解質や水
などを透過させる性質を有しているものである。Further, at this time, a reaction membrane may be arranged inside the gas diffusion membrane. That is, it is also possible to use a gas diffusion electrode consisting of a gas diffusion membrane and a reaction membrane used in solid polymer electrolyte membrane fuel cells and the like. Here, the reaction membrane refers to a membrane on which a catalyst is supported, and generally, hydrophilic carbon fine particles or catalyst fine particles on which a catalyst is supported are supported on hydrophobic carbon and a hydrophobic resin such as a fluororesin. It has the property of allowing water to pass through it.
このように形成した接合体では、固体高分子電解質膜と
ガス拡散膜苦しくＬよ反応膜との界面に存在する触媒量
が、例えば固体高分子電解質膜に直接、反応膜を接合し
た場合に比べて大幅に大きくなる。In the bonded body formed in this way, the amount of catalyst present at the interface between the solid polymer electrolyte membrane, the gas diffusion membrane, and the reaction membrane is lower than, for example, when the reaction membrane is bonded directly to the solid polymer electrolyte membrane. becomes significantly larger.
く実 施 例ン 以下、本発明を実施例に基づいて説明する。Practical example Hereinafter, the present invention will be explained based on examples.
第１図には一実施例に係る固体高分子電解質膜とガス拡
散電極との接合体の断面を示す。FIG. 1 shows a cross section of an assembly of a solid polymer electrolyte membrane and a gas diffusion electrode according to one embodiment.
同図中、１は固体高分子電解質膜、２はその両面に析出
された触媒層であり、この両側にガス拡散電極３Ａ、３
Ｂを接合して接合体としている。In the figure, 1 is a solid polymer electrolyte membrane, 2 is a catalyst layer deposited on both sides, and gas diffusion electrodes 3A, 3 are on both sides of the membrane.
B is joined to form a joined body.
ここで、固体高分子電解質膜１としては厚さ０．１７−
のデュポン社製のナフィオン１１７（商品名）を用い、
これに前述した吸着還元法によりＰｔ黴籾粒子らなる触
媒層２を形成した。Here, the solid polymer electrolyte membrane 1 has a thickness of 0.17-
Using Nafion 117 (product name) manufactured by DuPont,
A catalyst layer 2 made of Pt rice mold particles was formed thereon by the adsorption-reduction method described above.
一方、ガス拡散電極３Ａ、３Ｂは、平均粒径５０人の白
金と平均粒径４５０人の親水性カーボンブラックと平均
粒径０，３μのポリテトラプルオロエチレンとが０．７
： ７： ３の割合で成る親水性反応膜４Ａ、４Ｂ
と、平均粒径４２０人の疎水性カーボンブラックと平均
粒径０．３μのポリテトラフルオロエチレンとが７：
３の割合から成る疎水性ガス拡散膜５Ａ。On the other hand, the gas diffusion electrodes 3A and 3B are made of platinum with an average particle size of 50, hydrophilic carbon black with an average particle size of 450, and polytetrafluoroethylene with an average particle size of 0.3μ.
: Hydrophilic reaction membranes 4A and 4B with a ratio of 7:3
7: Hydrophobic carbon black with an average particle size of 420 and polytetrafluoroethylene with an average particle size of 0.3μ.
The hydrophobic gas diffusion membrane 5A consists of a ratio of 3.
５Ｂとから構成されている。親水性反応膜４Ａ。It is composed of 5B. Hydrophilic reaction membrane 4A.
４Ｂ及び疎水性ガス拡散膜５Ａ、５Ｂは、白金以外の各
原料粉末にソルベントナフサ、アルコール、水、炭化水
素などの溶媒を混合した後、圧縮成形することにより得
る乙とができる。そして、これらを重ねて圧延し、親水
性反応膜４Ａ、４Ｂ側に、塩化白金酸化還元法によりＰ
ｔＯ，５６ｇ／ｃＩｌを担持させることによりガス拡散
電極３Ａ、３Ｂが製造される。4B and the hydrophobic gas diffusion membranes 5A and 5B can be obtained by mixing each raw material powder other than platinum with a solvent such as solvent naphtha, alcohol, water, or hydrocarbon, and then compression molding the mixture. Then, these are piled up and rolled, and P is coated on the hydrophilic reaction membranes 4A and 4B using a platinum chloride oxidation-reduction method.
Gas diffusion electrodes 3A and 3B are manufactured by supporting tO, 56 g/cIl.
そして、２枚のガス拡散電極３Ａ、３Ｂの間に固体高分
子電解質膜１を挾んで挾持体とし、水分共存下１８０℃
で３ Ｑ Ｏａｔｅの条件で３００秒間ホットプレスす
ることにより接合体とした。Then, the solid polymer electrolyte membrane 1 is sandwiched between the two gas diffusion electrodes 3A and 3B as a sandwich body, and the temperature is increased to 180°C in the coexistence of water.
A bonded body was obtained by hot pressing for 300 seconds under the conditions of 3 Q Oate.
このように製造した接合体は、触媒が４〜５■／ｃｌＩ
ｒ担持されており、大幅な性能向上を図ることができる
。The thus produced conjugate has a catalyst content of 4 to 5 μ/clI.
r, and can significantly improve performance.
第２図には上述した実施例の接合体と、固体高分子電解
質膜１の表面に触媒層２を形成しない接合体（比較例）
について発電テストを行った結果を示すが、実施例の接
合体の方が著しく高性能であることが認められた。FIG. 2 shows the assembly of the above-mentioned example and the assembly in which the catalyst layer 2 is not formed on the surface of the solid polymer electrolyte membrane 1 (comparative example).
The results of a power generation test are shown below, and it was found that the combined body of the example had significantly higher performance.
〈発明の効果〉
以上説明したように、本発明に係る接合体は、単位面積
当りの触媒担持量が著しく大きいので、燃料電池や水電
解等に用いた場合の電池反応効率が大幅に向上するとい
う効果を秦する。<Effects of the Invention> As explained above, since the bonded body according to the present invention has a significantly large amount of catalyst supported per unit area, the cell reaction efficiency is greatly improved when used in fuel cells, water electrolysis, etc. The effect of Qin.
第１図は一実施例に係る接合体の断面図、第２図は発明
テストの結果を示すグラフ、第３図は固体高分子電解質
膜燃料電池本体の基本構造の概念図である。
図 面 中、
１は固体高分子電解質膜、
２は触媒層、
３Ａ、３Ｂはガス拡散電極、
４Ａ、４Ｂは親水性反応膜、
５Ａ。
Ｂは疎水性ガス拡散膜である。
三菱重工業株式会社FIG. 1 is a sectional view of an assembly according to one embodiment, FIG. 2 is a graph showing the results of an invention test, and FIG. 3 is a conceptual diagram of the basic structure of a solid polymer electrolyte membrane fuel cell main body. In the drawing, 1 is a solid polymer electrolyte membrane, 2 is a catalyst layer, 3A and 3B are gas diffusion electrodes, 4A and 4B are hydrophilic reaction membranes, and 5A. B is a hydrophobic gas diffusion membrane. Mitsubishi Heavy Industries, Ltd
Claims (1)
要に応じて内側に反応膜を有する２枚のガス拡散膜を配
した挾持体を、ホットプレスしてなることを特徴とする
固体高分子電解質膜と電極との接合体。A solid polymer electrolyte membrane characterized in that it is made by hot pressing a sandwiching body in which two gas diffusion membranes having a reaction membrane on the inside are placed on both sides of a solid polymer electrolyte membrane with a catalyst deposited on both sides. A combination of a molecular electrolyte membrane and an electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2095170A JPH03295169A (en) | 1990-04-12 | 1990-04-12 | Junction body of solid polymer electrolyte film and electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2095170A JPH03295169A (en) | 1990-04-12 | 1990-04-12 | Junction body of solid polymer electrolyte film and electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03295169A true JPH03295169A (en) | 1991-12-26 |
Family
ID=14130288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2095170A Pending JPH03295169A (en) | 1990-04-12 | 1990-04-12 | Junction body of solid polymer electrolyte film and electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03295169A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888011A (en) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | Solid polymer electrolyte fuel cell |
| US6129614A (en) * | 1996-04-12 | 2000-10-10 | Maschinenfabrik Rieter Ag | Apparatus for grinding clothing of a textile machine |
| US7037181B1 (en) * | 1998-09-09 | 2006-05-02 | Maschinenfabrik Rieter Ag | Device for grinding of clothing in a textile machine |
| JP2010102953A (en) * | 2008-10-23 | 2010-05-06 | Kurita Water Ind Ltd | Microbiological power generation device and positive electrode for the microbiological power generation device |
-
1990
- 1990-04-12 JP JP2095170A patent/JPH03295169A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0888011A (en) * | 1994-09-19 | 1996-04-02 | Hitachi Ltd | Solid polymer electrolyte fuel cell |
| US6129614A (en) * | 1996-04-12 | 2000-10-10 | Maschinenfabrik Rieter Ag | Apparatus for grinding clothing of a textile machine |
| US7037181B1 (en) * | 1998-09-09 | 2006-05-02 | Maschinenfabrik Rieter Ag | Device for grinding of clothing in a textile machine |
| JP2010102953A (en) * | 2008-10-23 | 2010-05-06 | Kurita Water Ind Ltd | Microbiological power generation device and positive electrode for the microbiological power generation device |
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