200849694 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種薄臈電極組合之製作方法， 尤指-種可於麗之：面上分別形成平整之啦並 達到控制MEA形成厚度之功效者。 【先前技術】 按’-般習用者如中華民國專利公報，第 093 101296號之厂以印刷製程製# 4表枉I作燃枓電池膜電極組 體之製造方法」，係包括下列步驟： %極觸媒劑及陰極觸 (a )準備一離子交換膜 媒劑溶液； 在一 (b )將裁剪成適當面積大小 薄板基座上，再將該薄板基座 之離子交換膜定位 置於一網印台上； (c )將一 板固定架； 選定之印刷板材固定於該網印台之網 d)以刮刀均勻地將準備好之觸媒劑覆蓋於印 刷板材圖形上’再用刮刀將覆蓋於印刷板材圖形之觸 媒劑印製放置於薄板基座上之離子交換膜； (e )元成該網印後，隨即將該離子交換膜放置 於一加熱板上予以加熱； 、 200849694 (f )待該離子交換膜恢復平坦後，即在該離子 交換膜上形成均勾的觸媒層。 雖…、:上述習用之「以印刷製程製作燃料電池膜電 極組體之製造方法」可於離子交換膜上形成陽極或陰 極之觸媒層，但是該離子交換膜在接觸到陽極觸媒劑 或陰極觸媒劑溶液後容易起皺，導致觸媒層形成之後 亦同時會有堡起皺褶之現象，而無法得到平整之觸媒 塗敷膜層’因而通常必須另外加上祛除皺褶的程序， =解決皺褶壟起的現象，且在塗製較厚觸媒敷層時， 需反覆多次敷印與除皺製程，更徒增製程之繁複，不 利產業之應用。 【發明内容】 本發明之主要目的係在於，可於PEM之二面上分 別形成平整之CEL，並達到控制MEA形成厚 效。 為達上述之目的，本發明係一種薄膜電極組合之 製作方法，至少包含製備、一次注料、一次成型：換 面、一次注料及二次成型等步驟；製作時係取一可加 熱控溫或不加熱之真空固定裝置，於真空固定裝置上 設有通氣平面’藉真空作用在該通氣平面上固定一 PEM，於PEM上设置一具有穿孔之模板，將一觸媒漿 倒入杈板之穿孔中，同時加熱該真空固定裝置以達到 該觸媒毁與該PEM之媒合溫度（若屬於常溫媒合則不 200849694 需加熱）；再以一壓板之凸出部對應壓入該模板之穿孔 中，即可於該PEM之一面上形成一第一觸媒電極層 (CEL);冷卻之後，將該PEM翻面，同法，於倒入 該觸媒漿並達媒合溫度後，再以一壓板對應壓入該模 板之穿孔，即可於該PEM之另一面上形成第二CEL’。 藉此，可於該PEM之二面上分別形成平整觸媒電極層 以獲得 CEL+PEM+CEL’ 之三層式 MEA (MEA-3-layer )，並達到控制MEA形成厚度之功效。 若於兩次壓板壓入之前，分別加入氣體擴散層（Gas Diffusion Layer， GDL )，則可以一次完成 GDL+CEL+PEM+CEL，+GDL’ 之五層式 MEA (MEA-5-layer ) 〇 【實施方式】 請參閱『第1圖』所示，係本發明之流程示意圖。 如圖所示：本發明係一種薄膜電極組合（Membrane Electrode Assembly, MEA)之製作方法，其至少係由 製備1、一次注料2、一次成型3、換面4、二次注 料5及二次成型6等步驟所構成，可於一質子交換膜 (Proton Exchange Membrane，PEM )之二面上分別形 成平整之觸媒電極層（Catalyst Electrode Layer， CEL )，並達到控制CEL形成厚度之功效。如是，藉由 上述之結構構成一全新之薄膜電極組合之製作方法。 200849694 請參閱『第2〜8圖』所示，係分別為本發明之 製備示意圖、本發明之一次注料示意圖、本發明之一 次成型示意圖、本發明之換面示意圖、本發明之二次 注料示意圖、本發明之二次成型示意圖及本發明之成 品示意圖。如圖所示··本發明製作之步驟包括： (a )製備1 ··取一具有熱溫控制或不加熱之真 空固定裝置7 1，於該真空固定裝置71上設置有通 氣平面7 2，並於通氣平面7 2上置放一 PEM7 3， 藉真空作用將PEM7 3平整的固定在該通氣平面7 2 上，之後再於該PEM7 3上設置一具有穿孔7 4丄之 拉板7 4。 (b ) —次注料2 :將一陽極觸媒漿8或一陰極 觸媒漿8 a倒入該固定裝置7内該模板7 4之穿孔7 4 1中，同時啟動該真空固定裝置7 i内之控溫加熱 元件7 1 1，使溫度逐漸升至該陽極觸媒漿8或陰極 觸媒漿8 a與PEM之媒合溫度（若於常溫媒合則不啟 動加熱）。 (C } 一次成型3 :保持真空固定裝置71之溫 度在該媒合溫度，以一具有凸出部75丄之壓板75 對應壓入該模板7 4之穿孔7 4 1中，即可於PEM7 3之一面上形成第一 CEL81。 (d )換面4 :該第一 Cel8 1形成於PEM7 3 之一面後，冷卻並停止真空固定裝置7 }之真空作用 200849694 與加熱，取出模板7 4，將該PEM7 3翻面，再啟動 真空固定裝置7 1之真空作用使pem 7 3平整的固定 於通氣平面7 2上，之後再於PEM 7 3上設置上述模 板 7 4‘。 (e )二次注料5 :再次將陽極觸媒漿8或陰極 觸媒漿8&倒入該固定裝置7内該模板74之穿孔7 4 1中，同時啟動真空固定裝置7 1内之控溫加熱元 件711，使溫度逐漸升至陽極觸媒漿8或陰極觸媒 漿8 a與pem之媒合溫度（若於常溫媒合則不啟動加 熱）〇 (f )二次成型6 :保持真空固定裝置7 1之溫 度在該媒合溫度，再以壓板7 5之凸出部7 5 1對應 壓入該模板7 4之穿孔7 4 1中，即可於PEM7 3 ^ 另一面上形成第二CEL，8 2 ,如此即可獲得組合為 CEL 8 1 +PEM 7 3 +CEL’ 8 2 之三層式 MEa (MEA_3-layer) 〇 若於兩次壓板壓入之前，分別加入氣體擴散層 (Gas Diffusi0n Layer，GDL )’則可以一次完成組合為 GDL+CEL 8 1 +PEM 7 3 +CEL，8 2 +GDL，之五層式 MEA ( MEA-5_layer)。 —當製作中欲將PEM7 3二面上之第一 CEL8丄或 第CEL 8 2疋義為％極或陰極時，係取決於一次注 料2及一人’主料5時注入之陽極或陰極觸媒焚8、 9 200849694 8a’若欲將第一 CEL8 1或第二CEL，8 2製成陽極 時，則可使用以Pt/Ru/C載體及Nafion溶液混合所製 成之陽極觸媒漿8，倘若欲將第一 CEL 8 1或第二 CEL’ 8 2製成陰極時，則可使用以Pt/C載體及仪奶时 溶液混合所製成之陰極觸媒漿8 a。 另當製作中欲將PEM 73二面上之第一、一 CEL、CEL’ 8 1、8 2製成所需之厚度時，係可於一 次成型3及二次成型6時控制壓板7 5之凸出部7 5 1對應壓入於模板74之穿孔741之深度，而藉以 分別控制達到形成於PEM 73二面上第一、二CEl、 CEL’8 1、8 2所需之厚度。 称上所述 个货π浔膘電極組合之製作方法可有 效改善習用之種種缺點，可於ΡΕΜ之二面上 =觸媒電極之ΜΕΑ’並達到控制觸媒電極組合形成 二之功效，進而使本發明之產生能更進步、更 :付ί使用f之所須，確已符合發明專利申請之要 ’羑依法提出專利申請。 ㈣上所料，料本料之較佳實 二:：:匕限定本發明實施之範圍… :與:::=發明說明書内容所作之簡單的心 白應仍屬本發明專利涵蓋之範圍内。 200849694 【圖式簡單說明】 第1圖 ，係本發明之流程示意圖。 第2圖 ，係本發明之製備示意圖。 第3圖 ，係本發明之一次注料示意圖。 第4圖 ，係本發明之一次成型示意圖。 第5圖 ，係本發明之換面示意圖。 第6圖 ，係本發明之二次注料示意圖。 第7圖 ，係本發明之二次成型示意圖。 第8圖 ，係本發明之成品示意圖。 【主要元件符號說明】 製備1 一次注料2 一次成型3 換面4 二次注料5 二次成型6 固定裝置7 真空固定裝置71 加熱控溫元件7 1 1 通氣平面7 2 200849694 質子交換膜7 3 模板7 4 穿孔7 4 1 壓板7 5 凸出部7 5 1 觸媒漿8、8 a 第一觸媒電極層8 1 第二觸媒電極層8 2200849694 IX. Description of the invention: [Technical field of the invention] The present invention relates to a method for fabricating a thin tantalum electrode assembly, in particular, a type which can be formed on the surface of the Li: and the thickness of the MEA is controlled. Efficacy. [Prior Art] The following steps are included in the method of manufacturing a battery cell assembly of a ruthenium battery by the printing process of the factory of the Republic of China, No. 093 101296, in the printing process. Catalyst and cathodic contact (a) prepare an ion exchange membrane media solution; in a (b) will be cut into a thin plate base of appropriate size, and then the ion exchange membrane of the thin plate base is positioned in a net (c) a plate holder; a selected printing plate fixed to the screen of the screen printing station d) uniformly covering the prepared catalyst with a doctor blade on the printing plate pattern, and then covering the printing with a doctor blade The catalyst of the plate pattern is printed on the ion exchange membrane placed on the base of the thin plate; (e) after the screen is printed, the ion exchange membrane is placed on a heating plate to be heated; , 200849694 (f ) After the ion exchange membrane returns to flatness, a uniform catalyst layer is formed on the ion exchange membrane. [...] The above-mentioned "manufacturing method for producing a fuel cell membrane electrode assembly by a printing process" may form an anode or cathode catalyst layer on an ion exchange membrane, but the ion exchange membrane is in contact with an anode catalyst or The cathodic catalyst solution tends to wrinkle, resulting in wrinkling after the formation of the catalyst layer, and the flat catalyst coating layer cannot be obtained. Therefore, it is usually necessary to additionally add a wrinkle removal procedure. , = solve the phenomenon of wrinkle ridges, and when applying thicker catalyst coating, it is necessary to repeatedly apply multiple printing and wrinkle removal processes, and increase the complexity of the process, which is unfavorable for industrial application. SUMMARY OF THE INVENTION The main object of the present invention is to form a flat CEL on both sides of a PEM and to achieve control of the MEA to form a thick effect. In order to achieve the above object, the present invention is a method for fabricating a thin film electrode assembly, comprising at least a preparation, a single shot, a one-shot molding: a face change, a one-shot injection, and an overmolding step; and the preparation is performed by heating or temperature control or A non-heated vacuum fixing device is provided with a ventilation plane on the vacuum fixing device. A PEM is fixed on the ventilation plane by a vacuum, and a perforated template is arranged on the PEM to pour the one-touch medium into the perforation of the seesaw. The vacuum fixing device is simultaneously heated to achieve the bonding temperature of the catalyst and the PEM (if it is normal temperature, the heating is not required in 200849694); and the projection of a pressing plate is correspondingly pressed into the perforation of the template. , a first catalyst electrode layer (CEL) can be formed on one surface of the PEM; after cooling, the PEM is turned over, the same method, after pouring the catalyst medium and reaching the bonding temperature, and then The pressing plate corresponding to the punching of the template can form a second CEL' on the other side of the PEM. Thereby, a flat catalyst electrode layer can be separately formed on both sides of the PEM to obtain a three-layer MEA (MEA-3-layer) of CEL+PEM+CEL', and the effect of controlling the thickness of the MEA can be achieved. If a Gas Diffusion Layer (GDL) is added before the press plate is pressed twice, the GDL+CEL+PEM+CEL, +GDL' five-layer MEA (MEA-5-layer) can be completed at one time. [Embodiment] Please refer to FIG. 1 for a schematic flow chart of the present invention. As shown in the figure: the present invention is a method for fabricating a Membrane Electrode Assembly (MEA), which is at least prepared by preparing 1, once injection 2, once molding 3, changing surface 4, secondary injection 5 and 2 The sub-molding step 6 and the like can form a flat Catalyst Electrode Layer (CEL) on both sides of a Proton Exchange Membrane (PEM), and achieve the effect of controlling the thickness of the CEL. Thus, a novel method of fabricating a thin film electrode assembly is constructed by the above structure. 200849694 Please refer to FIG. 2 to FIG. 8 for a schematic view of preparation of the present invention, a schematic diagram of one shot of the present invention, a schematic diagram of one molding of the present invention, a schematic diagram of a cross-section of the present invention, and a second injection of the present invention. The material schematic, the secondary molding schematic of the present invention and the schematic of the finished product of the present invention. As shown in the figure, the steps of the present invention include: (a) preparation 1 · taking a vacuum fixing device 7 with or without heating or heating, and providing a ventilation plane 7 2 on the vacuum fixing device 71, A PEM7 3 is placed on the ventilation plane 7 2 , and the PEM 7 3 is flatly fixed on the ventilation plane 7 2 by vacuum, and then a pull plate 7 4 having a perforation 7 4 is disposed on the PEM 7 3 . (b) - the second shot 2: an anode catalyst slurry 8 or a cathode catalyst slurry 8 a is poured into the perforation 7 4 1 of the template 7 in the fixture 7, while the vacuum fixture 7 i is activated The temperature-controlled heating element 7 1 1 therein gradually raises the temperature to the bonding temperature of the anode catalyst slurry 8 or the cathode catalyst slurry 8 a and the PEM (if the medium temperature is combined, the heating is not started). (C) One-shot molding 3: maintaining the temperature of the vacuum fixing device 71 at the bonding temperature, and pressing the pressing plate 75 having the protruding portion 75丄 into the through hole 71 of the template 74, that is, the PEM7 3 The first CEL 81 is formed on one side. (d) The face 4: after the first Cel 8 1 is formed on one side of the PEM 7 3 , the vacuum is stopped and the vacuum function of the vacuum fixing device 7 } is pressed and the heating is performed, and the template 7 4 is taken out. After the PEM7 3 is turned over, the vacuum of the vacuum fixing device 7 1 is activated to fix the pem 7 3 to the ventilation plane 7 2 , and then the template 7 4 ′ is placed on the PEM 7 3 . (e) Secondary injection 5: again, the anode catalyst slurry 8 or the cathode catalyst slurry 8& is poured into the perforation 7 4 1 of the template 74 in the fixing device 7, and simultaneously the temperature-controlled heating element 711 in the vacuum fixing device 7 1 is activated to make the temperature Gradually rise to the bonding temperature of the anode catalyst slurry 8 or the cathode catalyst slurry 8 a and pem (if the medium temperature is combined, the heating is not started) 〇 (f) overmolding 6 : maintaining the temperature of the vacuum fixing device 7 1 The bonding temperature is further pressed into the through hole 7 4 1 of the template 74 by the protrusion 7 5 1 of the pressing plate 75. A second CEL, 8 2 can be formed on the other side of the PEM7 3 ^ , so that a three-layer MEa (MEA_3-layer) combined as CEL 8 1 + PEM 7 3 + CEL' 8 2 can be obtained. Before the press-in, the gas diffusion layer (Gas Diffusi0n Layer, GDL) can be combined to form GDL+CEL 8 1 +PEM 7 3 +CEL, 8 2 +GDL, and the five-layer MEA (MEA-5_layer). - When the first CEL8丄 or CEL 8 2 on the two sides of the PEM7 3 is intended to be a % pole or a cathode, it depends on the injection of the anode or cathode when one shot 2 and one person's main material 5 Catalyst Burning 8, 9 200849694 8a' If the first CEL8 1 or the second CEL, 8 2 is to be made into an anode, the anode catalyst pulp prepared by mixing Pt/Ru/C carrier and Nafion solution can be used. 8. If the first CEL 8 1 or the second CEL' 8 2 is to be made into a cathode, the cathode catalyst slurry 8 a prepared by mixing the Pt/C carrier and the milk solution may be used. In order to make the first thickness of the two sides of the PEM 73, a CEL, CEL' 8 1 , 8 2 to the required thickness, the protrusion of the pressure plate 7 5 can be controlled in one molding 3 and over molding 6 7 5 1 corresponds to the depth of the perforations 741 pressed into the template 74, whereby the thickness required to form the first, second CEl, CEL'8 1, 8 2 formed on both sides of the PEM 73 is separately controlled. The manufacturing method of the above-mentioned π浔膘 electrode combination can effectively improve various disadvantages of the conventional use, and can be used on the two sides of the =2=catalytic electrode 并' and achieve the effect of controlling the combination of the catalyst electrode to form two, thereby enabling The invention can be made more progressively, and more: the need to use f, and indeed meet the requirements of the invention patent application. (4) The above materials are preferred. The following is the scope of the invention. The following is intended to cover the scope of the invention. 200849694 [Simplified description of the drawings] Fig. 1 is a schematic flow chart of the present invention. Fig. 2 is a schematic view showing the preparation of the present invention. Figure 3 is a schematic view of a shot of the present invention. Figure 4 is a schematic view of one molding of the present invention. Figure 5 is a schematic view of the face of the present invention. Figure 6 is a schematic view of the secondary injection of the present invention. Figure 7 is a schematic view of the secondary molding of the present invention. Figure 8 is a schematic view of the finished product of the present invention. [Description of main component symbols] Preparation 1 Primary injection 2 Primary molding 3 Change surface 4 Secondary injection 5 Secondary molding 6 Fixing device 7 Vacuum fixing device 71 Heating temperature control element 7 1 1 Ventilation plane 7 2 200849694 Proton exchange membrane 7 3 template 7 4 perforation 7 4 1 platen 7 5 projection 7 5 1 catalyst slurry 8, 8 a first catalyst electrode layer 8 1 second catalyst electrode layer 8 2