200921977 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種使用奈米碳材承载觸媒之薄 膜燃料電池電極製備方法，尤指一種以低電壓電泳電 鍍奈米碳材承載之電化學奈求觸媒以製作薄膜燃 池電極之方法及其應用。 '“，、電 【先前技」術】 -般所謂薄膜燃料電池’主要包括直接甲醇燃料 電池（Direct Methanol Fuel Celi，DMFC )和質子交換 膜燃料電池（Proton Exchange Membrane Fuei CeU， PEMFC)，乃係利用—f子交換膜作為㈣高分子電解 質之電化學發電裝置。這些屬於酸性薄膜燃料電池， 須使用能耐腐蝕之白金系觸媒，如鉑（Pt)及鉑-釕 (Pt-RU)。因薄膜燃料電池具有高能量密度、高電能 轉換效率、構造簡單輕巧、供f時間長及攜帶方便: 優點’可用來取代傳統之電化學電池，作為電動車、 手提電腦、手機及其它電子產品之能源。 該薄膜燃料電池之電化學觸媒，通常係以奈米顆 粒之形態均勻分散並附著在導電性碳黑粉末上，如美 國Cabot公司出產之⑽㈣xc?2。此導電性碳黑粉末 乃作為觸媒載體’且具傳遞電子或電流之功能；而電 極之奈米觸媒層，其製作方法係有下列三種·· 200921977 (a )直接塗佈於—離子交換膜上； (b )先塗佈於一可分離之基材上再轉印至一離 子交換膜上；以及 (c)先塗佈於一電極基材上再直接熱壓至一離 子交換膜上。 最吊見之電化學奈米觸媒塗佈方法包括粉刷、喷 塗及：印。其主要目的為獲致一均勻且薄之觸媒層， 以提咼觸媒利用效率及降低觸媒層阻抗。 "隨著奈米科技之進步，«近有許多奈米碳材，如 奈米碳管（Carbon Nanotube，CNT )、奈求碳纖（Carbon Nanofiber，CNF )及奈米碳錐（Nan〇h_ ，CNH) 被開發出來。因其具有優良之導電性及電化學穩定 性，乃被研究用來做為新一代電化學觸媒之載體，以 期進一步提升薄膜燃料電池之性能。然而，一般奈米 碳材均非常蓬鬆，且長度尺寸遠較導電性碳黑粉末 大，因此其所承載之電化學觸媒，如以傳統之觸媒塗 佈方法加工製作，其觸媒層通常太厚，且結構鬆散， 又離子交換劑用量多，導致阻抗太大，尤以製作高觸 媒負載量之電極為甚，例如4毫克鉑_釕（mg ptRu ) / 平方公分（cm2 );因此，此等奈米碳材所承載之電化 學觸媒，以傳統之觸媒塗佈方法均無法適用於薄膜燃 料電池電極之製作而獲致良好結果，所以薄膜燃料電 池使用其製成之薄膜電極組合（Membrane Electrode Assembly，MEA)，通常工作表現不佳。故，一般習用 200921977 者係無法符合使用者於實際使用時之所需。 另外’最近電泳電鑛法雖亦被研究用以製作初步 的燃料電池之電極或薄膜電極組合，但—般均於高電 麼下使用非水性溶液進行，操作困難且危險，也不符 合環保要求。本發明將有效解決這些困難。 【發明内容】 本發明之主要目的係在於，以低電壓電泳電鑛法 製作使用奈米碳材承載電化學奈米觸媒之薄膜燃料電 池電極之方法及其應用。 本發明之次要目的係在於，利用觸媒預先合成於 不未石厌材之載體上，可比較容易控制觸媒組成而增加 其安定性，藉此維持觸媒之良好形態與活性以簡化電 冰電鍍之操作，進而有效提升其電極之功能。 本發明之目㈣在於，使肖水性電泳電鍍液 進行低電壓電泳電鍍時’可利用該電化學奈米觸媒使 用之成份’製備出可應用於該薄膜燃料電池陽極或陰 極之電極，並能使覆蓋於該電極上之觸媒鍍層均勾且 薄而達到減少觸媒之用量，降低電極電阻，里有嗖備 簡單、操作安全及合乎環保要求等優點，可達到=效 解決傳統方法使用奈米碳材承_媒不易加 極之難題。 輯兔 種奈米碳材承載觸 利用預先合成於奈 為達以上之目的，本發明係一 媒之薄膜燃料電池電極製備方法， 200921977 米碳材表面之電化學奈米觸媒，與含一離子交換劑 (Ionomer)之溶液及一電解質（Electrolyte)混合， 經震盪及攪拌均勻成電泳電鍍懸浮液，並於一分隔式 電泳電鍍槽中通以適當之低直流電壓，使奈米碳材承 載之奈米觸媒及離子交換劑所形成之複合物可直接電 泳電鍍於一電極基材上而成可應用於薄膜燃料電池之 電極。 【實施方式】 請參閱『第1圖及第2圖』所示，係本發明之製 作流程示意圖及本發明之低電壓電泳電鍍裝置示意 圖。如圖所示：本發明係一種奈米碳材承載觸媒之薄 膜燃料電池電極製備方法，其至少包括下列步驟： (A)配製正、負極電泳電鍍液11:先將一含 離子交換劑（Ionomer )之溶液及一電解質（Electrolyte) 於容器中混合配製成一負極電泳電鍍液，再將一適量 之奈米碳材（Carbon Nanomaterials)承載之電化學奈 米觸媒與該離子交換劑之溶液及電解質混合而配製成 一正極電泳電鍍液，其中，該奈米碳材承載之電化學 奈米觸媒與該離子交換劑之乾量比率係可為1:4〜 L10，且該奈米碳材係可為單管壁及多管壁之奈米碳 管（Carbon Nanotube，CNT )、奈米礙纖（Carbon Nanofiber，CNF )、奈米碳圈（Carbon Nanocoil，CNC ) 及奈米碳錐（Carbon Nanohorn，CNH );該電化學奈米 200921977 觸媒之各量係可為丨〇〜90重量百分率（wt% )，若使 用於一直接甲醇燃料電池則係大於6〇wt% ;該電化學 奈米觸媒係可為白金系奈米觸媒，並可為鉑（Pt)、鉑 -釕（Pt-Ru)及始_釕_銀（pt_Ru_Ir)之一元、二元及 夕元觸媒，该離子交換劑溶液係可為質子交換劑溶 液，且其中之離子交換劑係可為水、甲醇（CH3〇H )、 乙醇（C2H5〇H)、異丙醇（（CH3)2CHOH)及去離子水 (Deionized Water)等溶劑； (B) 進行超音波振盪及高速攪拌i 2 :將該正、 負極電泳電鍍液各自經超音波振盪0〜60分鐘後，再 經南速攪拌〇〜60分鐘，使該奈米碳材承載之電化學 奈米觸媒與該離子交換劑結合成複合物，並形成均勻 之懸浮液； (C) 取一低電壓電泳電鍍裝置13:取一低電 壓電泳電鍍裝置2，將經超音波振盪及高速攪拌後之 正、負極電泳電鍍液1各自加入其内部分隔式電泳電 鍍槽2 1中以多孔性分隔膜2 2分隔之正、負極區 域，可避免電泳電鍍時產生氣體混合，並在該正極區 域通入一惰性氣體3攪拌，以防此懸浮液產生沉澱， 其中，該惰性氣體3係可為氮氣（n2)及氬氣（Ar); (D )進行低電壓電泳電鍍（Low_voltage200921977 IX. Description of the Invention: [Technical Field] The present invention relates to a method for preparing a thin film fuel cell electrode using a nano-carbon material carrying catalyst, in particular to an electrolysis of low-voltage electrophoretic plating of nano carbon material. The method of using the catalyst to make a thin film fuel cell electrode and its application. '",, [previous technology] - the so-called thin film fuel cell' mainly includes Direct Methanol Fuel Celi (DMFC) and Proton Exchange Membrane Fuei CeU (PEMFC). The -f sub-exchange membrane is used as the (four) polymer electrolyte electrochemical power generation device. These are acid thin film fuel cells that require corrosion-resistant platinum-based catalysts such as platinum (Pt) and platinum-ruthenium (Pt-RU). Because of its high energy density, high power conversion efficiency, simple and lightweight structure, long time and easy carrying: Thin film fuel cells can be used to replace traditional electrochemical cells as electric vehicles, laptops, mobile phones and other electronic products. energy. The electrochemical catalyst of the thin film fuel cell is generally uniformly dispersed in the form of nano particles and adhered to the conductive carbon black powder, such as (10) (4) xc? 2 produced by Cabot Corporation of the United States. The conductive carbon black powder functions as a catalyst carrier and has the function of transmitting electrons or current; and the nano-catalyst layer of the electrode is produced in the following three ways: 200921977 (a) Direct coating on ion exchange (b) first applied to a separable substrate and then transferred to an ion exchange membrane; and (c) first coated on an electrode substrate and then directly hot pressed onto an ion exchange membrane. . The most illuminating electrochemical nanocatalyst coating methods include painting, spraying and printing. Its main purpose is to obtain a uniform and thin catalyst layer to improve the utilization efficiency of the catalyst and reduce the impedance of the catalyst layer. "With the advancement of nanotechnology, «Nearly there are many nano carbon materials, such as Carbon Nanotube (CNT), Carbon Nanofiber (CNF) and Nano Carbon Cone (Nan〇h_, CNH) was developed. Because of its excellent electrical conductivity and electrochemical stability, it has been studied as a carrier for a new generation of electrochemical catalysts to further enhance the performance of thin film fuel cells. However, in general, nano carbon materials are very bulky, and the length is much larger than that of conductive carbon black powder. Therefore, the electrochemical catalyst carried by the nano-catalyst is processed by a conventional catalyst coating method, and the catalyst layer is usually Too thick, loose structure, and a large amount of ion exchanger, resulting in too much impedance, especially for electrodes with high catalyst loading, such as 4 mg platinum 钌 (mg ptRu ) / square centimeter (cm 2 ); The electrochemical catalysts carried by these nanocarbon materials can not be applied to the fabrication of thin film fuel cell electrodes by conventional catalyst coating methods, and good results are obtained, so the thin film fuel cells use the thin film electrode combinations thereof. (Membrane Electrode Assembly, MEA), usually does not perform well. Therefore, the general use of 200921977 can not meet the needs of users in actual use. In addition, the recent electrophoresis method has also been studied to make a preliminary fuel cell electrode or membrane electrode combination, but it is generally used in a non-aqueous solution under high power, which is difficult and dangerous to operate, and does not meet environmental requirements. . The present invention will effectively solve these difficulties. SUMMARY OF THE INVENTION The main object of the present invention is to produce a thin film fuel cell electrode using an inorganic carbon material to carry an electrochemical nanocatalyst by a low voltage electrophoresis electrophoresis method and an application thereof. The secondary object of the present invention is to pre-synthesize on a carrier which is not a stone-resistant material by using a catalyst, and it is relatively easy to control the composition of the catalyst to increase its stability, thereby maintaining the good shape and activity of the catalyst to simplify electricity. The operation of ice plating effectively enhances the function of its electrodes. The object (4) of the present invention is to prepare an electrode applicable to the anode or cathode of the thin film fuel cell by using the composition of the electrochemical nano-catalyst when performing the low-voltage electrophoretic electroplating of the aqueous electrophoretic electroplating solution. The catalyst coating on the electrode is thinned and thinned to reduce the amount of catalyst and reduce the electrode resistance. The utility model has the advantages of simple preparation, safe operation and environmental protection requirements, and can achieve the effect of solving the traditional method. The carbon fiber material is not easy to add to the problem. The rabbit nano-carbon material bearing contact is pre-synthesized in the above-mentioned purpose, and the invention is a medium-made thin film fuel cell electrode preparation method, 200921977, the electrochemical nano-catalyst on the surface of the carbon material, and an ion-containing ion The solution of the ionizer (Ionomer) is mixed with an electrolyte (Electrolyte), and is electrophoretically electroplated and suspended by shaking and stirring, and a suitable low DC voltage is applied to a separate electrophoresis plating tank to carry the nano carbon material. The composite formed by the nanocatalyst and the ion exchanger can be directly electrophoreticly plated on an electrode substrate to be applied to the electrode of the thin film fuel cell. [Embodiment] Please refer to "Fig. 1 and Fig. 2" for a schematic diagram of the manufacturing process of the present invention and a schematic diagram of the low voltage electrophoretic plating apparatus of the present invention. As shown in the figure: The present invention is a method for preparing a thin film fuel cell electrode for carrying a nano carbon material, which comprises at least the following steps: (A) preparing a positive and negative electrode electrophoretic plating solution 11: firstly containing an ion exchanger ( Ionomer) solution and an electrolyte (Electrolyte) are mixed in a container to form a negative electrode electrophoretic plating solution, and then an appropriate amount of carbon nanomaterials supported by the electrochemical nanocatalyst and the ion exchanger The solution and the electrolyte are mixed to form a positive electrode electrophoresis plating solution, wherein the ratio of the dry amount of the electrochemical nanocatalyst supported by the nano carbon material to the ion exchanger is 1:4 to L10, and the The rice carbon material can be a single tube wall and a multi-tube carbon nanotube (CNT), a carbon nanofiber (CNF), a carbon nanocoil (CNC), and a nano carbon. Cone (Carbon Nanohorn, CNH); the electrochemical nanometer 200921977 catalyst can be 丨〇~90 weight percent (wt%), if used in a direct methanol fuel cell, more than 6 〇 wt%; Electrochemical nanocatalyst can be platinum Nanocatalyst, and can be platinum (Pt), platinum-ruthenium (Pt-Ru) and ___ silver (pt_Ru_Ir) one element, binary and oxime catalyst, the ion exchanger solution can be proton An exchanger solution, wherein the ion exchanger is water, methanol (CH3〇H), ethanol (C2H5〇H), isopropanol ((CH3)2CHOH), and deionized water (Deionized Water); B) Ultrasonic oscillation and high-speed stirring i 2 : The positive and negative electrophoretic plating solutions are respectively ultrasonically oscillated for 0 to 60 minutes, and then stirred at a south speed for ～60 minutes to electrify the nano carbon material. Learning nano-catalyst and the ion exchanger to form a complex and form a uniform suspension; (C) taking a low-voltage electrophoretic plating device 13: taking a low-voltage electrophoretic plating device 2, which will be ultrasonically oscillated and high-speed After the stirring, the positive and negative electrophoretic plating solutions 1 are respectively added to the positive and negative regions separated by the porous separation membrane 22 in the internal separation electrophoresis plating tank 21, thereby avoiding gas mixing during electrophoretic plating, and in the positive electrode region. Stirring with an inert gas 3 to prevent precipitation of this suspension, , The inert gas may be nitrogen-based 3 (n2) and argon (Ar); low voltage electrophoresis plating (Low_voltage (D)
Electrophoretic Deposition) 1 4 :將一電極基材 3 1 作為該電泳電鍍槽2 1之正電極，以一白金網3 2作 為該電泳電鍍槽2 1之負電極，利用一低電壓直流裝 200921977 置4為電源對該電泳電鍍槽2 1通以一 〇〜5伏特（v) 低直電壓進行電泳電鍍〇〜1分鐘，使該電化學奈 米觸媒5與該離子交換劑6結合之複合物直接均勻覆 蓋於該電極基材3 1上成一觸媒鍍層，其中，該電極 基材3 1係可為無觸媒氣體擴散電極、碳紙或碳布； 以及 Ε )獲知薄膜燃料電池（Membrane Fuel Cells ) 之電極1 5 ··將經過低電壓電泳電鍍後之電極基材取 出，用一去離子水清洗該觸媒鍍層數次，並予以乾燥 即成該薄膜燃料電池之電極。 由上述之方法，利用觸媒預先合成於奈米碳材之 載體上不僅可比較容易控制觸媒組成而增加其安定 性，並能藉此維持觸媒之良好形態與活性以簡化電泳 電鍍之操作，進而有效提升其電極之功能。如是，使 本發月在使用水性電泳電錢液進行低電壓電泳電鑛 時’可利用該電化學奈米觸媒使用之成份，製備出可 應用於該賴燃料電池龍或陰極之電極，並能使覆 =該電極上之觸顧層均句且薄而達職少觸媒之 置’、有備簡單、操作安全及合乎環保要求等優 可達到有效解決傳統方法使用奈米碳材承載觸媒 不易加工製作電極之難題。 太半2發明於運用時’係以低電壓電泳電鑛銘釕/ :S ( Pt_RU/CNT )騎簡㈣ 電池(DMFC)之陽極為實施例，並以45毫升二1 200921977 績酸樹脂（Nafion)溶液為離子线劑之溶液，$毫升 過氣酸（HC1〇4)為電解f，利用本發明之奈米碳 材承載觸媒之薄膜燃料電池電極製備方法，依據第工 圖之製作流程，對上述實施例設定條件進行低電壓電 泳電鍍自製奈米碳管承載之〇25克 仂wt%Pt-20wt%Ru/CNT電化學奈米觸媒製作直接曱 醇燃料電池之陽極，藉此使本發明以低電壓電泳電鍍 所製之電極，其觸媒鍍層可平滑且薄，並呈光亮色澤， 再由其增加之重量，係可估算出該陽極之觸媒承載量 約為0.103毫克/平方公分（mg/cm2)。經使用循環伏 安法（Cyclic Voltammetry，CV)測試後，證實本發明 所製備之陽極對曱醇氧化具有優良之電化學催化活 性。 ’ 依據上述實施例，將其所製作直接甲醇燃料電池 之陽極在60oC下應用於直接曱醇燃料電池之工作性 能。使用一含Pt Black/C之氣體滲透電極（Gas Diffusion Electrode，GDE)為陰極，其觸媒承載量為 4mg/cm2。將該兩電極與一質子交換膜（Nafi〇n 於130°C及60大氣壓力下經熱壓5分鐘形成—薄膜電 極組合（MEA)’再用兩片石墨面板及一矽膠材質防漏 塾片將之組合成一單槽直接曱醇燃料電池。另外，使 用傳統粉刷塗佈法製作一比較用陽極，並以相同方法 紐·成一單槽直接曱醇燃料電池。 200921977 請進一步參閱『第3圖』所示，係本發明製作之 陽極工作曲線示意圖。如圖所示：係將本發明所製作 之陽極與使用傳統粉刷塗佈法製作之直接甲醇燃料電 池之陽極，於60 下進行比較，其操作條件為陽極 使用1體積莫耳濃度/分鐘（M/min)甲醇（ch3〇h) 為燃料，陰極使用200毫升/分鐘（ml/min)空氣（Α^) 為氧化劑。一使用本發明所製陽極之放電功率曲線了 及一使用傳統粉刷法所製陽極之放電功率曲線8，兩 者觸媒含量相同。由此等曲線分佈係可得知本發明所 製作之陽極其表現效果遠比傳統方法製作者佳，證明 本發明所製作之電極適合作為薄膜燃料電池，如應用 於直接曱醇燃料電池（DMFC) #質子交換膜燃料電 池（PEMFC)所使用。 际上所述，本發明係 -----·，WT、趴,稣 < 湾 、燃料電池電極製備方法，可有效改善f用之種種勒 ^利用預先合成於奈米碳材表面之電化學奈米觸 媒’使用水性電泳電舰進行低電壓電泳電鍍時，可 藉由該電化學奈米觸媒使用之成份，製備出可應用於 邊薄膜燃料電池陽極或陰極之電極，並能使覆蓋於該 電極上之觸媒鍍層均勻且薄而達到減少觸媒之用量f 具有設備簡單、操作安全及合乎環保要求等優點，可 達到有效解決傳財法使时米碳材承朗媒不易加 工製作電極之難題，進^使本發明之產生能更進步、 更實用、更符合使用者之所須，_已符合發明專利申 12 200921977 明之要件，菱依法提出 冬惟„者’僅為本發:月之較佳實施例而已， j此以此限疋本發明實施之範圍；故，凡依本發明 明專利乾圍及發明說明書内容所作之簡單的等效變 化與修飾’皆應仍屬本發明專利涵蓋之範圍内。 13 200921977 【圖式簡單說明】 第1圖，係本發明之製作流程示意圖。 第2圖’係本發明之低電壓電泳電鐘裝置示意圖。 第3圖’係本發明製作之陽極工作曲線示意圖。 【主要元件符號說明】 正、負極電泳電錢液1 步驟（A )配製正、負極電泳電鍍液丄工 步驟（B)進行超音波振盪及高速攪拌1 2 步驟（C)取一低電壓電泳電鍍裝置工3 步驟（D )進行低電壓電泳電鍍工4 步驟（E )獲得薄膜燃料電池之電極工5 低電壓電泳電鍍裝置2 電泳電鍍槽2 1 多孔性分隔膜2 2 惰性氣體3 電極基材3 1 白金網3 2 低電壓直流裝置4 電化學奈米觸媒5 離子交換劑6 14 200921977 放電功率曲線7 放電功率曲線8Electrophoretic Deposition) 1 4 : An electrode substrate 3 1 is used as a positive electrode of the electrophoretic plating bath 21, and a platinum wire 3 2 is used as a negative electrode of the electrophoretic plating tank 21, using a low voltage DC device 200921977. The electrophoresis plating tank 21 is electrophoretically plated with a low voltage of 〇~5 volt (v) for 1 minute to make the composite of the electrochemical nanocatalyst 5 and the ion exchanger 6 directly Uniformly covering the electrode substrate 31 to form a catalyst plating layer, wherein the electrode substrate 31 can be a catalyst-free gas diffusion electrode, carbon paper or carbon cloth; and Ε) knowing the membrane fuel cell (Membrane Fuel Cells) Electrode 1 5 ·· The electrode substrate after low-voltage electrophoretic plating is taken out, the catalyst plating layer is washed several times with a deionized water, and dried to form an electrode of the thin film fuel cell. According to the above method, the catalyst is pre-synthesized on the carrier of the nano carbon material, so that the catalyst composition can be controlled more easily and the stability can be improved, and the good morphology and activity of the catalyst can be maintained to simplify the electrophoretic plating operation. , thereby effectively improving the function of its electrodes. If so, the present month can use the composition of the electrochemical nano-catalyst to prepare an electrode applicable to the dragon or cathode of the fuel cell when using the aqueous electrophoretic money liquid for low-voltage electrophoresis. It can make the coverage of the electrode on the electrode evenly thin and reach the less demanding of the catalyst. It is easy to prepare, safe in operation and environmentally friendly. It can effectively solve the traditional method of using nano carbon material. The medium is difficult to process and make electrodes. Too half 2 was invented in the application of low-voltage electrophoresis EM / / S (Pt_RU / CNT) riding simple (four) battery (DMFC) anode as an example, and with 45 ml two 1 200921977 acid resin (Nafion The solution is a solution of an ionizing agent, and the method for preparing a thin film fuel cell electrode using the nano carbon material carrying the catalyst of the present invention is an electrolytic f, and according to the manufacturing process of the first drawing, The conditions set in the above examples were subjected to low-voltage electrophoretic electroplating and self-made carbon nanotubes carried by 25 仂wt% Pt-20wt% Ru/CNT electrochemical nanocatalyst to make the anode of the direct oxime fuel cell, thereby making the present Invented by low-voltage electrophoretic electroplating, the catalyst coating can be smooth and thin, and has a bright color, and the weight of the catalyst can be estimated to be about 0.103 mg/cm 2 . (mg/cm2). After the cyclic voltammetry (CV) test, it was confirmed that the anode prepared by the present invention has excellent electrochemical catalytic activity for sterol oxidation. According to the above embodiment, the anode of the direct methanol fuel cell produced therefrom was applied to the working performance of a direct methanol fuel cell at 60 °C. A Gas Diffusion Electrode (GDE) containing Pt Black/C was used as a cathode, and the catalyst loading amount was 4 mg/cm2. The two electrodes are combined with a proton exchange membrane (Nafi〇n is formed by heat pressing at 130 ° C and 60 atmospheres for 5 minutes - thin film electrode assembly (MEA)' and two pieces of graphite panel and one silicone material leakage preventing sheet are used. They are combined into a single-slot direct sterol fuel cell. In addition, a conventional anode is used to make a comparative anode, and the same method is used to make a single-tank direct sterol fuel cell. 200921977 Please refer to "Fig. 3" Shown is a schematic diagram of the working curve of the anode produced by the present invention. As shown in the figure, the anode prepared by the present invention is compared with the anode of a direct methanol fuel cell manufactured by a conventional powder coating method at 60°, and its operation is performed. The condition is that the anode uses 1 volume of molar concentration per minute (M/min) of methanol (ch3〇h) as fuel, and the cathode uses 200 ml/min (ml/min) of air (Α^) as an oxidant. The discharge power curve of the anode and the discharge power curve 8 of the anode prepared by the conventional brushing method have the same catalyst content. The curve distribution can be used to know that the anode produced by the invention is effective. It is far better than the traditional method makers, and proves that the electrode made by the invention is suitable as a thin film fuel cell, such as used in a direct sterol fuel cell (DMFC) #proton exchange membrane fuel cell (PEMFC). Inventive Department -----, WT, 趴, 撒, Bay, fuel cell electrode preparation method, can effectively improve the various types of f use of electrochemical nano-catalysts previously synthesized on the surface of nano-carbon material When an aqueous electrophoresis electric ship is used for low-voltage electrophoretic electroplating, an electrode which can be applied to an anode or a cathode of a thin film fuel cell can be prepared by using the component of the electrochemical nano-catalyst, and can be covered on the electrode. The catalyst plating is uniform and thin, and the amount of catalyst is reduced. The utility model has the advantages of simple equipment, safe operation and environmental protection requirements, and can effectively solve the problem that the carbon material is difficult to process and manufacture the electrode. ^ Make the invention more progressive, more practical, and more in line with the needs of the user, _ has met the requirements of the invention patent application 12 200921977, Ling proposed the winter only „者' is only this The preferred embodiment of the present invention is limited to the scope of the present invention; therefore, the simple equivalent changes and modifications made in accordance with the disclosure of the present invention and the contents of the description of the invention are still present. 13 200921977 [Simplified illustration of the drawings] Fig. 1 is a schematic diagram of the production process of the present invention. Fig. 2 is a schematic view of a low voltage electrophoresis electric clock device of the present invention. Fig. 3 is a view of the present invention Schematic diagram of the anode working curve. [Main component symbol description] Positive and negative electrode electrophoresis liquid solution 1 Step (A) Prepare positive and negative electrode electrophoresis plating solution completion step (B) for ultrasonic oscillation and high-speed stirring 1 2 Step (C Take a low-voltage electrophoretic plating device 3 steps (D) for low-voltage electrophoresis plating step 4 (E) to obtain a thin film fuel cell electrode 5 low-voltage electrophoresis plating device 2 electrophoresis plating tank 2 1 porous separation membrane 2 2 Inert gas 3 electrode substrate 3 1 Platinum mesh 3 2 Low voltage DC device 4 Electrochemical nanocatalyst 5 Ion exchanger 6 14 200921977 Discharge power curve 7 Discharge power curve 8