JP6743717B2 - Method for manufacturing MEA plate - Google Patents

Method for manufacturing MEA plate Download PDF

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JP6743717B2
JP6743717B2 JP2017011154A JP2017011154A JP6743717B2 JP 6743717 B2 JP6743717 B2 JP 6743717B2 JP 2017011154 A JP2017011154 A JP 2017011154A JP 2017011154 A JP2017011154 A JP 2017011154A JP 6743717 B2 JP6743717 B2 JP 6743717B2
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frame member
mea
opening
peripheral edge
adhesive
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JP2018120736A (en
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俊樹 杉本
俊樹 杉本
渡辺　祐介
祐介 渡辺
佑介 田口
佑介 田口
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Toyota Motor Corp
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    • 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

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Description

本発明は、燃料電池単セル用のＭＥＡプレートの製造方法に関するものである。 The present invention relates to a method for manufacturing an MEA plate for a fuel cell single cell.

特許文献１には、支持フレーム（フレーム部材）を有する燃料電池が開示されている。燃料電池は、電解質膜と、電解質膜を挟むアノード電極及びカソード電極とを備える。電解質膜とアノード電極とカソード電極は、ＭＥＡ（Membrane Electrode Assembly：膜電極接合体）を構成する。ＭＥＡの外周には、フレーム部材が接着剤によって接着されている。ＭＥＡとフレーム部材は、ＭＥＡプレートを構成する。 Patent Document 1 discloses a fuel cell having a support frame (frame member). The fuel cell includes an electrolyte membrane and an anode electrode and a cathode electrode that sandwich the electrolyte membrane. The electrolyte membrane, the anode electrode, and the cathode electrode form a MEA (Membrane Electrode Assembly). A frame member is bonded to the outer periphery of the MEA with an adhesive. The MEA and the frame member form an MEA plate.

特開２０１６−１６２６５１号公報JP, 2016-162651, A

しかしながら、従来は、フレーム部材をＭＥＡに接着する際、接着剤とフレーム部材の接触面に気泡が入ってしまい、反応ガスが漏洩してしまう問題がある。 However, conventionally, when the frame member is bonded to the MEA, there is a problem that bubbles enter the contact surface between the adhesive and the frame member, and the reaction gas leaks.

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態として実現することが可能である。 The present invention has been made to solve at least a part of the problems described above, and can be realized as the following modes.

（１）本発明の一形態によれば、ＭＥＡプレートの製造方法が提供される。この矩形のＭＥＡ開口を有する樹脂製のフレーム部材と、外周部分が前記ＭＥＡ開口の周縁にある前記フレーム部材の開口周縁部分と重ねて接着された膜電極接合体とを有するＭＥＡプレートの製造方法は、前記ＭＥＡ開口の４つの角において前記開口周縁部分に切込部が設けられた前記フレーム部材と、前記膜電極接合体とを準備する工程と、前記膜電極接合体の前記外周部分に接着剤を塗布する工程と、前記フレーム部材の前記開口周縁部分を前記膜電極接合体に向けて傾斜させた状態で、前記開口周縁部分を前記接着剤と接触させる工程と、前記接着剤を挟んで前記フレーム部材の前記開口周縁部分と前記膜電極接合体の前記外周部分に圧力を加えることによって、前記フレーム部材と前記膜電極接合体を接着する工程と、を備える。
この形態のＭＥＡプレートの製造方法によれば、フレーム部材の開口周縁部分を膜電極接合体に向けて傾斜させた状態で接着剤と接触させて圧力を加えるので、接着剤と開口周縁部分との接触面に気泡が生じることを抑制できる。 (1) According to one aspect of the present invention, a method for manufacturing an MEA plate is provided. A method of manufacturing an MEA plate having a resin frame member having the rectangular MEA opening and a membrane electrode assembly bonded to the opening peripheral portion of the frame member having an outer peripheral portion at the peripheral edge of the MEA opening in an overlapping manner is described. A step of preparing the frame member having cutouts provided at the peripheral edge portions of the MEA opening at four corners thereof and the membrane electrode assembly, and an adhesive on the outer peripheral portion of the membrane electrode assembly. And a step of contacting the opening peripheral edge portion with the adhesive in a state where the opening peripheral edge portion of the frame member is inclined toward the membrane electrode assembly, and sandwiching the adhesive between Bonding the frame member and the membrane electrode assembly by applying pressure to the opening peripheral portion of the frame member and the outer peripheral portion of the membrane electrode assembly.
According to the manufacturing method of the MEA plate of this aspect, since the pressure is applied by contacting with the adhesive in a state in which the opening peripheral edge portion of the frame member is inclined toward the membrane electrode assembly, the adhesive and the opening peripheral edge portion are separated from each other. It is possible to suppress the generation of bubbles on the contact surface.

本発明は、上記以外の種々の形態で実現することも可能である。例えば、燃料電池単セルの製造方法、燃料電池の製造方法等の形態で実現することができる。 The present invention can be realized in various forms other than the above. For example, it can be realized in the form of a method for manufacturing a fuel cell single cell, a method for manufacturing a fuel cell, or the like.

一実施形態の製造方法で得られるＭＥＡプレートを使用する燃料電池スタックの分解斜視図。FIG. 3 is an exploded perspective view of a fuel cell stack using the MEA plate obtained by the manufacturing method according to the embodiment. ＭＥＡプレートの平面図。The top view of an MEA plate. フレーム部材の開口周縁部分を傾斜させる様子を示す断面図。Sectional drawing which shows a mode that the opening peripheral part of a frame member is inclined. 開口周縁部分を他の方法で傾斜させる様子を示す断面図。Sectional drawing which shows a mode that the edge part of an opening is inclined by another method. フレーム部材をＭＥＡに接着させる様子を示す図。The figure which shows a mode that a frame member is made to adhere to MEA. フレーム部材をＭＥＡに接着させる様子の拡大図。FIG. 6 is an enlarged view of the frame member being bonded to the MEA. フレーム部材をＭＥＡに接着させる様子の拡大図。FIG. 6 is an enlarged view of the frame member being bonded to the MEA. 比較例におけるフレーム部材をＭＥＡに接着させる様子を示す図。The figure which shows a mode that the frame member in a comparative example is adhere|attached on MEA. 比較例におけるフレーム部材をＭＥＡに接着させる様子を示す図。The figure which shows a mode that the frame member in a comparative example is adhere|attached on MEA.

図１は、本発明の一実施形態の製造方法で得られるＭＥＡプレート３０を使用する燃料電池スタック１００の分解斜視図である。燃料電池スタック１００は、複数の単セル１４０が、図１に示すＺ軸方向に積層されて形成されている。図中で、Ｚ軸及びＸ軸は水平面と平行であり、＋Ｙ方向は鉛直上方向を示し、−Ｙ方向は鉛直下方を示す。単セル１４０は、ＭＥＡ３２とＭＥＡ３２の外周に接着されたフレーム部材３１とを有するＭＥＡプレート３０と、ＭＥＡプレート３０を挟んで配置された２つのセパレータ４０，５０、すなわち、カソード側セパレータ４０と、アノード側セパレータ５０とを備える。燃料電池スタック１００は、いわゆる固体高分子形燃料電池であり、反応ガス（酸化剤ガス及び燃料ガス）の供給部や、冷却媒体の供給部等と共に燃料電池システムを構成する。このような燃料電池システムは、例えば、駆動用電源を供給するためのシステムとして、車両等に搭載される。 FIG. 1 is an exploded perspective view of a fuel cell stack 100 using an MEA plate 30 obtained by a manufacturing method according to an embodiment of the present invention. The fuel cell stack 100 is formed by stacking a plurality of single cells 140 in the Z-axis direction shown in FIG. In the figure, the Z-axis and the X-axis are parallel to the horizontal plane, the +Y direction indicates the vertically upward direction, and the −Y direction indicates the vertically downward direction. The unit cell 140 includes an MEA plate 30 having an MEA 32 and a frame member 31 adhered to the outer periphery of the MEA 32, two separators 40 and 50 arranged with the MEA plate 30 sandwiched therebetween, that is, a cathode side separator 40 and an anode. And a side separator 50. The fuel cell stack 100 is a so-called polymer electrolyte fuel cell, and constitutes a fuel cell system together with a reaction gas (oxidant gas and fuel gas) supply unit, a cooling medium supply unit, and the like. Such a fuel cell system is mounted in a vehicle or the like as a system for supplying a driving power source, for example.

図２は、ＭＥＡプレート３０の平面図である。図示の便宜上、ＭＥＡ３２をハッチングしている。フレーム部材３１は、矩形の形状を有する樹脂製の部材であり、複数のマニホールド開口３５と、一つのＭＥＡ開口３３と、ＭＥＡ開口３３の周縁にある開口周縁部分３３Ｐと、を有する。マニホールド開口３５は、フレーム部材３１の長手方向の両側に設けられており、燃料電池スタック１００（図１）内部を流れる反応ガス及び冷却媒体を通過させる。ＭＥＡ開口３３は、フレーム部材３１の中央に設けられており、矩形の形状を有する。ＭＥＡ開口３３の４つの角のそれぞれにおけるフレーム部材３１の開口周縁部分３３Ｐには、切込部３４が設けられている。切込部３４は、隣接するＭＥＡ開口３３の辺と鋭角θを形成している。こうすれば、開口周縁部分３３Ｐを傾斜させることを容易に行える。なお、切込部３４は、開口周縁部分３３Ｐが傾斜できれば他の任意の形としてもよい。図２において、フレーム部材３１の開口周縁部分３３Ｐの裏面には、ＭＥＡ３２の外周部分３２Ｐが開口周縁部分３３Ｐと重ねて接着されている。なお、ＭＥＡ開口３３の面積は、ＭＥＡ３２の面積よりも小さい。また、フレーム部材３１は、単層の樹脂シートによって構成されてもよく、２枚の熱可塑性樹脂シートでコア材を挟む三層樹脂シートによって構成されてもよい。 FIG. 2 is a plan view of the MEA plate 30. For convenience of illustration, the MEA 32 is hatched. The frame member 31 is a resin member having a rectangular shape, and has a plurality of manifold openings 35, one MEA opening 33, and an opening peripheral portion 33P at the peripheral edge of the MEA opening 33. The manifold openings 35 are provided on both sides in the longitudinal direction of the frame member 31, and allow the reaction gas and the cooling medium flowing inside the fuel cell stack 100 (FIG. 1) to pass through. The MEA opening 33 is provided in the center of the frame member 31 and has a rectangular shape. A notch 34 is provided in the opening peripheral edge portion 33P of the frame member 31 at each of the four corners of the MEA opening 33. The notch 34 forms an acute angle θ with the side of the adjacent MEA opening 33. By doing so, it is possible to easily incline the opening peripheral edge portion 33P. The notch 34 may have any other shape as long as the opening peripheral portion 33P can be inclined. In FIG. 2, the outer peripheral portion 32P of the MEA 32 is bonded to the back surface of the opening peripheral edge portion 33P of the frame member 31 so as to overlap the opening peripheral edge portion 33P. The area of the MEA opening 33 is smaller than the area of the MEA 32. Further, the frame member 31 may be formed of a single-layer resin sheet, or may be formed of a three-layer resin sheet in which a core material is sandwiched between two thermoplastic resin sheets.

図３は、フレーム部材３１の開口周縁部分３３Ｐを傾斜させる様子を示す断面図である。図示の便宜上、フレーム部材３１は、図２のＭＥＡプレート３０を長手方向に沿って切った断面で表している。フレーム部材３１の開口周縁部分３３Ｐは、斜面形成治具２００によって加工される。斜面形成治具２００は、上型２１０と下型２２０とを備える。上型２１０の底面の周縁には、斜面Ｓ１が設けられている。下型２２０の上面の中央には、底面の周縁に斜面Ｓ２が設けられた凹部２２１が形成されている。上型２１０の斜面Ｓ１と下型２２０の斜面Ｓ２とを合わせることにより、上型２１０を凹部２２１と嵌合することが可能である。なお、下型２２０の凹部２２１の開口の長さＬ２は、フレーム部材３１のＭＥＡ開口３３の長さＬ１よりも小さい。 FIG. 3 is a cross-sectional view showing how the opening peripheral edge portion 33P of the frame member 31 is inclined. For convenience of illustration, the frame member 31 is represented by a cross section taken along the longitudinal direction of the MEA plate 30 of FIG. The peripheral edge portion 33P of the frame member 31 is processed by the slope forming jig 200. The slope forming jig 200 includes an upper die 210 and a lower die 220. A slope S1 is provided on the peripheral edge of the bottom surface of the upper die 210. At the center of the upper surface of the lower mold 220, a concave portion 221 having a slope S2 on the peripheral edge of the bottom surface is formed. By matching the slope S1 of the upper mold 210 and the slope S2 of the lower mold 220, the upper mold 210 can be fitted into the recess 221. The length L2 of the opening of the recess 221 of the lower mold 220 is smaller than the length L1 of the MEA opening 33 of the frame member 31.

フレーム部材３１は、予めＭＥＡ開口３３が下型２２０の凹部２２１と重なるように下型２２０に設置される。その後、上型２１０を下降させると、フレーム部材３１の開口周縁部分３３Ｐは、上型２１０の斜面Ｓ１と下型２２０の斜面Ｓ２に挟まれることによって、下方に向けて傾斜する。 The frame member 31 is installed in the lower mold 220 in advance so that the MEA opening 33 overlaps the recess 221 of the lower mold 220. Then, when the upper die 210 is lowered, the opening peripheral edge portion 33P of the frame member 31 is sandwiched between the slope S1 of the upper die 210 and the slope S2 of the lower die 220, and is inclined downward.

図４は、他の方法によってフレーム部材３１の開口周縁部分３３Ｐを傾斜させる様子を示す断面図であり、開口周縁部分３３Ｐを拡大した図である。加熱装置４００は、開口周縁部分３３Ｐの直前の部分Ｈを加熱する。部分Ｈが加熱により柔らかくなり、開口周縁部分３３Ｐが自重によって下方に向けて傾斜する。なお、フレーム部材３１の開口周縁部分３３Ｐを傾斜させる方法としては、図３及び図４以外の任意の方法を利用可能である。 FIG. 4 is a cross-sectional view showing how the opening peripheral edge portion 33P of the frame member 31 is inclined by another method, and is an enlarged view of the opening peripheral edge portion 33P. The heating device 400 heats the portion H immediately before the opening peripheral portion 33P. The portion H is softened by heating, and the opening peripheral edge portion 33P is inclined downward by its own weight. As a method of inclining the opening peripheral edge portion 33P of the frame member 31, any method other than FIGS. 3 and 4 can be used.

図５は、フレーム部材３１をＭＥＡ３２に接着させる様子を示す図である。図示の便宜上、フレーム部材３１のＭＥＡ開口３３の線を省略している。ＭＥＡ３２は、外周部分３２Ｐに予め接着剤６０が塗布されており、載置台５００に設置されている。接着剤としては、例えば未硬化の紫外線硬化性樹脂が使用可能である。フレーム部材３１は、接着治具３００によってＭＥＡ３２に接着される。接着治具３００は、フレーム部材３１とほぼ同様な外観形状を有し、内部に吸着用流路３１０を備える。真空ポンプを用いて吸着用流路３１０を真空引きすることによって、フレーム部材３１を吸引して保持することが可能である。接着治具３００は、フレーム部材３１を保持した状態で下降させ、その開口周縁部分３３Ｐを接着剤６０と接触させるとともに、開口周縁部分３３Ｐに圧力を加える。 FIG. 5 is a diagram showing how the frame member 31 is bonded to the MEA 32. For convenience of illustration, the line of the MEA opening 33 of the frame member 31 is omitted. The MEA 32 has the outer peripheral portion 32P to which the adhesive 60 is applied in advance, and is installed on the mounting table 500. As the adhesive, for example, an uncured ultraviolet curable resin can be used. The frame member 31 is bonded to the MEA 32 by the bonding jig 300. The bonding jig 300 has an external shape substantially similar to that of the frame member 31, and has a suction channel 310 inside. The frame member 31 can be sucked and held by evacuating the suction channel 310 using a vacuum pump. The bonding jig 300 lowers the frame member 31 while holding the frame member 31, contacts the opening peripheral edge portion 33P with the adhesive 60, and applies pressure to the opening peripheral edge portion 33P.

図６は、図５のフレーム部材３１の開口周縁部分３３Ｐ付近を拡大した図であり、吸着用流路３１０を省略している。接着剤６０の表面には、凹凸Ｒｏが形成されている。この凹凸Ｒｏは、接着剤６０の塗布の際に意図せずに形成されてしまうものである。フレーム部材３１の開口周縁部分３３Ｐは、ＭＥＡ３２に向けて傾斜している。この結果、開口周縁部分３３Ｐにおいて、ＭＥＡ開口３３により近い内側部分３３ｉｓが、ＭＥＡ開口３３により遠い外側部分３３ｏｓよりも先に接着剤６０と接触している。 FIG. 6 is an enlarged view of the vicinity of the opening peripheral edge portion 33P of the frame member 31 of FIG. 5, and the suction flow channel 310 is omitted. Concavities and convexities Ro are formed on the surface of the adhesive 60. The unevenness Ro is unintentionally formed when the adhesive 60 is applied. The opening peripheral edge portion 33P of the frame member 31 is inclined toward the MEA 32. As a result, in the opening peripheral portion 33P, the inner portion 33is closer to the MEA opening 33 comes into contact with the adhesive 60 before the outer portion 33os farther from the MEA opening 33.

図７は、接着治具３００がフレーム部材３１の開口周縁部分３３Ｐに圧力を加えた後の様子を示す図である。接着治具３００からの圧力により、フレーム部材３１の開口周縁部分３３Ｐは、水平に延びることによって外側部分３３ｏｓも接着剤６０と接触する。こうすれば、開口周縁部分３３Ｐが接着剤６０の表面の凹凸Ｒｏ（図６）を平坦にすることができ、気泡が生じることを抑制できる。また、開口周縁部分３３Ｐは内側部分３３ｉｓ、外側部分３３ｏｓの順に接着剤６０の表面と接触するので、接着剤６０がＭＥＡ３２の中央より外側に広がり、有効発電面積の低下を抑制できる。これにより、フレーム部材３１とＭＥＡ３２が接着剤６０によって接着される。 FIG. 7 is a diagram showing a state after the bonding jig 300 applies pressure to the opening peripheral edge portion 33P of the frame member 31. Due to the pressure from the bonding jig 300, the opening peripheral edge portion 33P of the frame member 31 extends horizontally so that the outer portion 33os also comes into contact with the adhesive 60. In this way, the opening peripheral portion 33P can flatten the unevenness Ro (FIG. 6) on the surface of the adhesive 60, and it is possible to suppress the generation of bubbles. Further, since the opening peripheral portion 33P contacts the surface of the adhesive 60 in the order of the inner portion 33is and the outer portion 33os, the adhesive 60 spreads from the center of the MEA 32 to the outside, and the reduction of the effective power generation area can be suppressed. As a result, the frame member 31 and the MEA 32 are bonded by the adhesive 60.

図８は、比較例におけるフレーム部材３１ａをＭＥＡ３２に接着させる様子を示す図であり、図６に対応する図である。図８の比較例において、フレーム部材３１ａの開口周縁部分３３Ｐａは、水平の状態で接着剤６０と接触する。この結果、接着剤６０の表面の凹凸Ｒｏの凹部に空気が封入されてしまう。 FIG. 8 is a diagram showing a state in which the frame member 31 a in the comparative example is bonded to the MEA 32, and is a diagram corresponding to FIG. 6. In the comparative example of FIG. 8, the opening peripheral edge portion 33Pa of the frame member 31a contacts the adhesive 60 in a horizontal state. As a result, air is filled in the concave portions of the unevenness Ro on the surface of the adhesive 60.

図９は、比較例において接着治具３００がフレーム部材３１ａの開口周縁部分３３Ｐａに圧力を加えた後の様子を示す図である。接着剤６０の表面に空気が封入されているため、気泡Ｂｕが形成されてしまい、反応ガスが漏洩してしまう。 FIG. 9 is a diagram showing a state after the bonding jig 300 applies pressure to the opening peripheral edge portion 33Pa of the frame member 31a in the comparative example. Since air is enclosed on the surface of the adhesive 60, bubbles Bu are formed and the reaction gas leaks.

以上説明したように、本発明の一実施形態では、フレーム部材３１の開口周縁部分３３ＰをＭＥＡ３２に向けて傾斜させた状態で接着剤６０と接触させて圧力を加えるので、接着剤６０と開口周縁部分３３Ｐとの接触面に気泡が生じることを抑制できる。 As described above, in the embodiment of the present invention, the pressure is applied by contacting the adhesive 60 with the opening peripheral portion 33P of the frame member 31 inclined toward the MEA 32. It is possible to suppress the generation of bubbles on the contact surface with the portion 33P.

本発明は、上述の実施形態に限られるものではなく、その趣旨を逸脱しない範囲において種々の構成で実現することができる。例えば、発明の概要の欄に記載した各形態中の技術的特徴に対応する実施形態中の技術的特徴は、上述の課題の一部又は全部を解決するために、あるいは、上述の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことが可能である。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除することが可能である。 The present invention is not limited to the above-described embodiments, and can be implemented with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments corresponding to the technical features in each mode described in the section of the summary of the invention are to solve some or all of the above problems, or It is possible to appropriately replace or combine them in order to achieve a part or all. If the technical features are not described as essential in the present specification, they can be deleted as appropriate.

３０…ＭＥＡプレート
３１，３１ａ…フレーム部材
３２…膜電極接合体（ＭＥＡ）
３２Ｐ…外周部分
３３…ＭＥＡ開口
３３Ｐ，３３Ｐａ…開口周縁部分
３３ｉｓ…内側部分
３３ｏｓ…外側部分
３４…切込部
３５…マニホールド開口
４０…カソード側セパレータ
５０…アノード側セパレータ
６０…接着剤
１００…燃料電池スタック
１４０…単セル
２００…斜面形成治具
２１０…上型
２２０…下型
２２１…凹部
３００…接着治具
３１０…吸着用流路
４００…加熱装置
５００…載置台 30... MEA plate 31, 31a... Frame member 32... Membrane electrode assembly (MEA)
32P... Outer peripheral portion 33... MEA opening 33P, 33Pa... Opening peripheral edge portion 33is... Inner portion 33os... Outer portion 34... Notch portion 35... Manifold opening 40... Cathode side separator 50... Anode side separator 60... Adhesive agent 100... Fuel cell Stack 140... Single cell 200... Slope forming jig 210... Upper mold 220... Lower mold 221... Recessed portion 300... Adhesive jig 310... Adsorption flow path 400... Heating device 500... Mounting table

Claims (1)

矩形のＭＥＡ開口を有する樹脂製のフレーム部材と、外周部分が前記ＭＥＡ開口の周縁にある前記フレーム部材の開口周縁部分と重ねて接着された膜電極接合体とを有するＭＥＡプレートの製造方法であって、
前記ＭＥＡ開口の４つの角において前記開口周縁部分に切込部が設けられた前記フレーム部材と、前記膜電極接合体とを準備する工程と、
前記膜電極接合体の前記外周部分に接着剤を塗布する工程と、
前記フレーム部材の前記開口周縁部分を前記膜電極接合体に向けて傾斜させた状態で、前記開口周縁部分を前記接着剤と接触させる工程と、
前記接着剤を挟んで前記フレーム部材の前記開口周縁部分と前記膜電極接合体の前記外周部分に圧力を加えることによって、前記フレーム部材と前記膜電極接合体を接着する工程と、
を備えるＭＥＡプレートの製造方法。 A method of manufacturing an MEA plate, comprising: a resin frame member having a rectangular MEA opening; and a membrane electrode assembly bonded to an opening peripheral portion of the frame member having an outer peripheral portion at a peripheral edge of the MEA opening. hand,
A step of preparing the frame member provided with notches in the peripheral edge portion of the opening at the four corners of the MEA opening, and the membrane electrode assembly;
Applying an adhesive to the outer peripheral portion of the membrane electrode assembly,
Contacting the opening peripheral edge portion with the adhesive in a state where the opening peripheral edge portion of the frame member is inclined toward the membrane electrode assembly,
A step of adhering the frame member and the membrane electrode assembly by applying pressure to the opening peripheral portion of the frame member and the outer peripheral portion of the membrane electrode assembly while sandwiching the adhesive;
A method for manufacturing an MEA plate comprising:
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