201140632 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種電解電容器的製造方法，且特別 是有關於一種鋁電解電容器之陽極箔的製造方法。 【先前技術】 二導體之間夾設有絕緣體，即可形成電容器。此二導 體分別為此電容器之二電極。當以直流電壓通入電容器之 二電極之間時，此二電極之間的電壓會逐漸達到電源電 壓，電流會流入電容器内。其中，一電極會有正電積存， 另一電極則會有負電積存。這樣的充電現象係由於正電與 負電隔著二電極之間的絕緣體互相吸引的緣故。 對於電容器而言，在相同的外加電壓施加下，所能積 存之電能愈大者，代表此電容器之靜電容量愈大。舉例而 言，請參照第1圖，其係繪示一種傳統電容器之裝置示意 圖。電容器100包含二電極102與104、以及絕緣層106， 其中絕緣層106夾設在二電極102與104之間。此二電極 102與104為導電平板。其中，每個電極102與104均具 有表面積A。而且，此二電極102與104之間相隔一間距 d。絕緣層106則具有介電常數ε。 對電容器100施加一電壓時，二電極102與104之間 會充電而產生電場。此電容器100的比電容所能儲存的靜 電容量C決定於電極102與104之表面積A、絕緣層106 之介電常數ε、以及二電極102與104之間的間距d。關 於影響電容器1〇〇之靜電容量C的因素請參考下列方程式 4 201140632 1 ° C== ε xA/d 由方程式1可知，電 （方程式1) 之介電常數ε、及電極102和=電容量C與絕緣層 但與二電極1〇2和1〇4 17 之表面積Α之間成正比， 二電極102和1〇4之門的二的間距d成反比。也就是說， 表面積A愈大、絕緣層^^ d愈;；、、電極呢和UM之 所能儲存之靜電容量C就愈大。冤$數£愈大，電容器100 相當重要的許容器之二落而言’其比電容是 箔經-段時式ΐ增加陽極箔之比電容時，陽極 1的比電〜合射Υ ，若繼續以腐蝕方式來提升此陽極 =，，！對陽極落之結構強度與耐折曲強度造成損 :祕㈣，一種方法，可在不影響陽極箱之結構強度 又下，更有效地提升陽極箔之比電容。 【發明内容】 因此，本發明之一態樣就是在提供一種鋁電解電容器 之％極ν自的製造方法’其係採用己二酸銨（Ammonium Adipate)溶液來作為安定化液。相較於習知磷酸與磷酸二氫 録(Ammonium Dihydrogen Phosphate)所組成之安定化液， 本發明之己二酸銨安定化液具有較佳之安定化效果。 本發明之另一態樣是在提供一種鋁電解電容器之陽極 201140632 箔的製造方法，其安定化處理所採用之安定化液的配方單 純，相當容易配製。 本發明之又一態樣是在提供一種鋁電解電容器之陽極 箔的製造方法，其藉由調整安定化處理之安定化液的組 成，可在不影響陽極箔之結構強度與耐折曲強度下，達到 有效提升陽極箔之比電容的目的。 根據本發明之上述目的，提出一種鋁電解電容器之陽 極箔的製造方法，包含下列步驟。提供一陽極箔素片。對 陽極箔素片進行一腐蝕步驟，以在陽極箔素片之表面上形 成大量蝕坑。對經腐蝕步驟後之陽極箔素片進行一後處理 步驟，以在陽極箔素片之表面上形成一安定化膜。其中， 後處理步驟包含一安定化處理，且此安定化處理包含利用 一安定化液，安定化液包含一己二酸銨溶液。於後處理步 驟後，對陽極箔素片進行一化成處理，而使陽極箔素片形 成陽極箔。 依據本發明之一實施例，上述之腐蝕步驟係利用一電 触技術。 依據本發明之另一實施例，上述之後處理步驟更包含 於安定化處理後，對安定化膜進行一烘烤處理。 依據本發明之又一實施例，上述之己二酸銨溶液之濃 度範圍介於l〇〇g/L與250g/L之間。 依據本發明之再一實施例，上述進行化成處理時更包 含利用一電壓，此電壓介於10伏特至50伏特。 依據本發明之再一實施例，上述之鋁電解電容器之陽 極箔的製造方法更包含於腐蝕步驟與後處理步驟之間，對 201140632 陽極羯素片進行一清洗歩驟。 造方=:::::=_之陽極、 不僅安定化液容易配製;處理的安定化液，因此 可在不影響陽極箱之处故：二供較佳之安定化效果，更 提升陽極_之比電c與耐折曲強度下，達到有二 【實施方式】 請參照第2圖，1後& 種銘電解電容器之陽極落的曰發明-實施方式的〜 方式中，製作鋁雷組帝方法的流程圖。在本實称 所述，提供陽極陽極料’先如同步驟200201140632 VI. Description of the Invention: [Technical Field] The present invention relates to a method of manufacturing an electrolytic capacitor, and more particularly to a method of manufacturing an anode foil of an aluminum electrolytic capacitor. [Prior Art] A capacitor is formed by interposing an insulator between two conductors. The two conductors are respectively the two electrodes of the capacitor. When a DC voltage is applied between the two electrodes of the capacitor, the voltage between the two electrodes gradually reaches the power supply voltage, and the current flows into the capacitor. Among them, one electrode will have positive electricity accumulation, and the other electrode will have negative electricity accumulation. Such a charging phenomenon is caused by positive and negative charges being attracted to each other via an insulator between the two electrodes. For a capacitor, the greater the amount of energy that can be accumulated under the same applied voltage, the greater the electrostatic capacity of the capacitor. For example, please refer to Fig. 1, which is a schematic view of a device of a conventional capacitor. The capacitor 100 includes two electrodes 102 and 104, and an insulating layer 106, wherein the insulating layer 106 is interposed between the two electrodes 102 and 104. The two electrodes 102 and 104 are conductive plates. Here, each of the electrodes 102 and 104 has a surface area A. Moreover, the two electrodes 102 and 104 are separated by a distance d. The insulating layer 106 has a dielectric constant ε. When a voltage is applied to the capacitor 100, the two electrodes 102 and 104 are charged to generate an electric field. The electrostatic capacitance C that can be stored by the specific capacitance of the capacitor 100 is determined by the surface area A of the electrodes 102 and 104, the dielectric constant ε of the insulating layer 106, and the spacing d between the two electrodes 102 and 104. For the factors affecting the electrostatic capacitance C of the capacitor 1请, please refer to the following equation 4 201140632 1 ° C== ε xA/d From Equation 1, the dielectric constant ε of the electric (Equation 1), and the electrode 102 and = capacitance C is proportional to the insulating layer but to the surface area 二 of the two electrodes 1〇2 and 1〇4 17 , and the distance d between the two electrodes 102 and 1 〇4 is inversely proportional. That is to say, the larger the surface area A, the more the insulating layer is, the larger the electrostatic capacity C that the electrode and the UM can store. The larger the 冤$number is, the more important the capacitor 100 is. The specific capacitance of the capacitor is the ratio of the capacitance of the anode to the anode, and the specific capacitance of the anode 1 is 合, if Continue to enhance this anode by corrosion =,,! Damage to the structural strength and flexural strength of the anode drop: Secret (4), a method that can effectively increase the specific capacitance of the anode foil without affecting the structural strength of the anode box. SUMMARY OF THE INVENTION Accordingly, an aspect of the present invention provides a method for producing a % of an aluminum electrolytic capacitor, which uses an Ammonium Adipate solution as a stabilization solution. Compared with the stabilizer solution composed of the conventional phosphoric acid and Ammonium Dihydrogen Phosphate, the ammonium adipate stabilizer solution of the present invention has a better stabilization effect. Another aspect of the present invention is to provide a method for producing an anode of an aluminum electrolytic capacitor, the 201140632 foil, which is prepared by a stable formulation of the stabilizer solution used for the stabilization treatment. Still another aspect of the present invention provides a method for producing an anode foil of an aluminum electrolytic capacitor, which can adjust the composition of the stabilization solution to stabilize the composition of the anode foil without affecting the structural strength and bending strength of the anode foil. To achieve the purpose of effectively increasing the specific capacitance of the anode foil. According to the above object of the present invention, a method for producing an anode foil of an aluminum electrolytic capacitor is provided, which comprises the following steps. An anode foil sheet is provided. The anodic foil sheet was subjected to an etching step to form a large number of etch pits on the surface of the anode foil sheet. The post-etching step of the anode foil sheet is subjected to a post-treatment step to form a stabilization film on the surface of the anode foil sheet. Wherein, the post-treatment step comprises a stabilization treatment, and the stabilization treatment comprises using a stabilization solution comprising a solution of ammonium adipate. After the post-treatment step, the anode foil sheet was subjected to a chemical conversion treatment, and the anode foil sheet was formed into an anode foil. In accordance with an embodiment of the invention, the etching step described above utilizes an electrical touch technique. According to another embodiment of the present invention, the post-processing step further includes performing a baking treatment on the stabilized film after the stabilization treatment. According to still another embodiment of the present invention, the above ammonium adipate solution has a concentration ranging between 10 g/L and 250 g/L. According to still another embodiment of the present invention, the above-described chemical conversion process further includes utilizing a voltage ranging from 10 volts to 50 volts. According to still another embodiment of the present invention, the method for fabricating the anode foil of the aluminum electrolytic capacitor described above is further included between the etching step and the post-treatment step, and a cleaning step is performed on the 201140632 anode anodic sheet. The anode of the making party =:::::=_ is not only easy to prepare for the stability of the chemical solution; the stability of the treated liquid can be used without affecting the anode box: the second is to provide a better stabilization effect, and the anode is further improved. In comparison with the electric c and the flexural strength, there are two [Embodiment] Please refer to Fig. 2, 1 after & the anode of the electrolytic capacitor, the invention of the anode - the embodiment of the method Flow chart of the method. In the present specification, the anode anode is provided as shown in step 200.
白京片此險極箔素片200之;bf·μ * A 相較:_:素片，陽極㈣所使用之_^1。 二極ίΓΓ_片之表面積’如步驟2〇心 述，極泊素片進行繼驟，藉此在陽極箱 ： 命整=數個表面上形成許鋒坑。藉㈣㈣方式，使 ㈣素片的表面上產生許多飯坑，可有效提高陽極箱素 的表面積。而陽極箔素片之表面積的增加，也可提高鋁 解電，器的靜電容量。在，實施例中，由於陽極^片具 有較高之鋁純度，因而此腐蝕步驟可利用例如電蝕技術f 接著，如步驟204所述j完成陽極箔素片之腐蝕步驟 202後，對經腐蝕處理後之陽極箔素片進行後處理步驟。 在-實施射，後處理^^包含彻安定化液對此陽極箱 素片進行安定化處理，以在陽極箱素片之具有钱坑的表面 上形成安定化臈。在另/實施例中，後處理步驟更包含於 201140632 安定化處理後，對此陽極箔素片進杆扭樓占 疋订;；、烤處理。藉 烤處理，可有效調整與控制形成在陽極箔素 稭由此烘 安定化膜’並使安定化液可有效發揮其安定，表面上的 -來’可使經後處理步驟後之陽極羯素片：;=化 理中，獲得較佳之化成效果。 續&化线 在本實施方式中，在後處理步驟之安定化處理中，安 定=液包含己二義賴。在_實_巾，已二酸錢溶液 之濃度範圍可例如介於l〇〇g/L與250g/L之間。Baijing tablets of this dangerous polar foil sheet 200; bf·μ * A compared with: _: plain film, anode (four) used _ ^ 1. The surface area of the two poles 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片 片By means of (4) (4), many rice pits are produced on the surface of the (4) plain tablets, which can effectively increase the surface area of the anode box. The increase in the surface area of the anode foil sheet can also increase the electrostatic capacity of the aluminum electrolyte. In the embodiment, since the anode sheet has a high aluminum purity, the etching step can utilize, for example, an electrolytic etching technique. Next, after the etching step 202 of the anode foil sheet is completed as described in step 204, the etching is performed. The treated anode foil sheet is subjected to a post-treatment step. In the shot-and-shooting process, the anode block is subjected to a stabilization treatment to form a stabilized ruthenium on the surface of the anode box. In another embodiment, the post-processing step is further included in the 201140632 stabilization treatment, and the anode foil sheet is twisted and twisted; By baking treatment, it can effectively adjust and control the formation of the anode foil, thereby drying the membrane and allowing the stability liquid to effectively exert its stability, and the surface can be - can be used after the post-treatment step. In the film:; = chemistry, to obtain a better chemical conversion effect. Continuation & Line In the present embodiment, in the stabilization process of the post-treatment step, the stability = liquid contains hexamethylene. The concentration of the diacid solution may be, for example, between l〇〇g/L and 250 g/L.
在本實施方式中，以己二酸贿絲取代傳統之安定 化液磷酸與磷酸二氫銨，可提供較佳之安定化效果，而且 可在不影響陽極箔之結構強度與耐折曲強度下，確實達到 提升陽極箔之比電容的目的。 在另一實施方式中，於腐蝕步驟與後處理步驟之間， 可選擇性地對經腐蝕過之陽極箔素片進行清洗步驟，以洗 掉殘留在陽極箔素片之表面上的酸與有害離子。In the present embodiment, replacing the traditional stabilizer liquid phosphoric acid and ammonium dihydrogen phosphate with adipic acid brittle wire can provide better stabilization effect, and can not affect the structural strength and flexural strength of the anode foil. It does achieve the purpose of increasing the specific capacitance of the anode foil. In another embodiment, the etched anode foil sheet can be selectively subjected to a cleaning step between the etching step and the post-treatment step to wash off the acid remaining on the surface of the anode foil sheet and is harmful. ion.
於後處理步驟後，如步驟206所述，對此陽極箔素片 進=化成處理’藉以在陽極箔素片的表面上形成化成膜， 而元成陽極箔的製作。其中，化成膜為一鋁氧化膜。此鋁 ^化膜為鋁電解電容器之主要絕緣體。在一實施例中，進 行此化成處理時，對陽極箔素片施加電壓，其中此電壓可 例如介於10伏特至5〇伏特。 °月參照第3圖，其係繪示以傳統與本發明之一實施例 之安定化液進行處理之陽極箔，經20伏特化成處理後且在 四種電蝕條件下的比電容的比較圖。在傳統之安定化液 中，其係採用〇.1%之磷酸二氫銨與〇1〇/〇之磷酸溶液。在這 201140632 四種電蝕條件下，以太 安定化處理，再μ 例 二舰安定化峻 比電容均大於二傳^^成處，’所形成之陽極落的 處理，再經20伏特酸安定化液安定化 #^士每特化成處理後所得到之陽極箔的比電容 i _較統^例之安定化液處理後所獲 得之陽極箔的' & uAfter the post-treatment step, as described in step 206, the anode foil sheet is subjected to a chemical conversion process to form a film on the surface of the anode foil sheet, and the anode is formed into an anode foil. Among them, the chemical conversion film is an aluminum oxide film. This aluminum film is the main insulator of the aluminum electrolytic capacitor. In one embodiment, a voltage is applied to the anode foil sheet during the chemical conversion process, wherein the voltage can be, for example, between 10 volts and 5 volts. Referring to FIG. 3, it is a comparison diagram of the specific capacitance of the anode foil treated with the stabilizer solution of one embodiment of the present invention after 20 volts specialization and under four kinds of electro-erosion conditions. . In the conventional stabilizer solution, a phosphoric acid solution of 1.1% ammonium dihydrogen phosphate and 〇1〇/〇 is used. Under the four electro-erosion conditions of 201140632, the ether is stabilized, and then the capacitance of the second ship is more than that of the second pass, and the formed anode falls, and then stabilized by 20 volts of acid. Liquid stability The specific capacitance of the anode foil obtained after each chemical treatment is _ more than the anode foil obtained after the treatment of the stabilizer solution
二二第，4圖’其鱗示以傳統與本發明之一實施如 之女疋、、文進仃處理之陽極箱，經4〇伏特化成處理後 四種電#條件下的比電容的比較圖。在傳統之安定化液 :其同樣採用0.1〇/〇之鱗酸二氮链與〇1〇/❶之攝酸溶液。在 這四種電ϋ丨条件下，以本實施例所使用之己二酸錢安定化 液安定，處理’再經4G伏特化成處理後，所形成之陽極箱 的比電谷均大於’以傳統磷酸二氫銨與磷酸安定化液安定 化處理’再經40伏特化成處理後所得到之陽極箔的比電 谷。其t ’經本實施例之安定化液處理後所獲得之陽極箔 的比電容較傳統方式所獲得之陽極箔的比電容提升2// F/cm2〜3.5/zF/cm2 〇 凊參照第5圖，其係綠示以傳統與本發明之一實施例 之安定化液進行處理之陽極箱，經安定化處理一個月後， 再進行21伏特化成處理後的比電容的比較圖。在傳統之安 定化液中’其同樣採用〇 1%之磷酸二氫敍與0.1 %之鱗酸溶 液。以本實施例所使用之己二酸銨安定化液安定化處理一 個月’再進行21伏特化成處理後，所形成之陽極箔的比電 容大於，以傳統磷酸二氫銨與磷酸安定化液安定化處理一 201140632 個月’再進行21伏特化成處理後所得到之陽極箔的比電 容。其中’經本實施例之安定化液處理後所獲得之陽極羯 的比電容較傳統方式所獲得之陽極箔的比電容提升6〇/〇。2nd, 4th, 'The scale shows the comparison of the specific capacitances under the four electric conditions of the anode box treated by the traditional and the invention, such as the niece and Wenjin 仃. Figure. In the traditional stabilizer solution: it also uses 0.1 〇 / 〇 bisphosphonate chain and 〇 1 〇 / ❶ acid solution. Under these four conditions, the adipic acid solution used in this example is stabilized, and after the treatment is further processed by 4G volts, the specific anode of the formed anode box is larger than 'traditional The specific ratio of the anode foil obtained by the ammonium dihydrogen phosphate and the phosphoric acid stabilization solution after the 40 volts formation treatment. The specific capacitance of the anode foil obtained by the treatment of the stabilizer solution of the present embodiment is increased by 2//F/cm2 to 3.5/zF/cm2 than that of the anode foil obtained by the conventional method. The green box is shown in the anode box which has been treated with the stabilizer solution of one embodiment of the present invention. After one month of stabilization, the specific capacitance of the 21 volts is compared. In the conventional stabilization solution, it also uses 〇1% dihydrogen phosphate and 0.1% scalar solution. After the ammonium adipate stability solution used in the present embodiment is stabilized for one month and then subjected to 21 volts to form a specific treatment, the specific capacitance of the formed anode foil is greater than that of the conventional ammonium dihydrogen phosphate and phosphoric acid stabilizer. The specific capacitance of the anode foil obtained after the treatment of 21 406 32 months was carried out. The specific capacitance of the anode 获得 obtained by the treatment of the stabilizer solution of the present embodiment is increased by 6 〇/〇 compared with the specific capacitance of the anode foil obtained by the conventional method.
m 請參照第6圖，其係繪示以傳統與本發明之一實施例 之安定化液進行處理之陽極猪’經安定化處理一個月後， 再進行47伏特化成處理後的比電容的比較圖。在傳統之安 定化液中，其同樣採用〇,1%之磷酸二氫銨與〇.1%之磷酸溶 液。以本實施例所使用之己二酸銨安定化液安定化處理一 個月，再進行47伏特化成處理後，所形成之陽極箔的比電 容大於，以傳統磷酸二氫銨與磷酸安定化液安定化處理一 個月，再進行47伏特化成處理後所得到之陽極箔的比電 容。其中，經本實施例之安定化液處理後 的比電容較傳統方式所獲得之陽極羯的比于電之容= 由此可知，運用本發明之技術，可在完全不更動製程 不更改設備、不提高成本、以及不損害陽極落 : ::陽::產提:陽極一比電容。特二= 產0σ而言，效果更加顯著。 因為:i:!:之實施方式可知’本發明之-優點就: 液來作為安電w之陽極箔的製造方法係採用己二酸銨，， 之安定化^切，減於f知雜與㈣二氫錢所組i 化效果。本發明之己二酸銨安定化液具有較佳之安; 是因發明之實施方式可知，本發明之另-優點t 電解電容器之陽極箔的製造方法在安定化處理t 201140632 所採用之安定化液的配方單純，因此安 製，可使製程易於實施。 疋化液相备谷易配 由上述本發明之實施方式可知，本發明之又 藉由調整安定化處理之安定化液的組成，可在不影塑陽^ ^之結構強度與耐折曲強度下，達到有效提^比 電容的目的。 自^比 雖然本發明已以實施例揭露如上，然其並非用以 =明’任何在此技術領域中具有通常知識者，在不脫 =明之精神和範圍内，當可作各種之更動與 :發明之保護範圍當視後附之申請專利範 【圖式簡單說明】 為讓本發明之上述和其他目的、牿 把更明顯易懂，所附圖式之說明如下：、徵、優點與實施例 • 第1圖係繪示一種傳統電容器之努 笛，向 衣罝不意圖。 办第2圖係繪示依照本發明一實施 令~陽極箱的製造方法的流程圖。式的一種紹電解電 ，3圖係繪示以傳統與本發明之一 ^處理之陽極落，經20伏特化成處;3之安定化液 件下的比電容的比較圖。 曼且在四種韻條 進行圖⑽會示以傳統與本發明Γ實施例之安定化液 件二理之％極落’經4〇伏特化成處理後且在四種電餘條 卜的比電容的比較圖。 第5圖係繪示以傳統與本發明之一實施例之安 液 i Si 201140632 進行處理之陽極箔，經安定化處理一個月後，再進行21伏 特化成處理後的比電容的比較圖。 第6圖係繪示以傳統與本發明之一實施例之安定化液 進行處理之陽極箔，經安定化處理一個月後，再進行47伏 特化成處理後的比電容的比較圖。 【主要元件符號說明】 102 :電極 106 :絕緣層 202 :步驟 206 :步驟 d :間距 100 :電容器 104 :電極 200 :步驟 204 :步驟 A :表面積m Please refer to Fig. 6, which is a comparison of the specific capacitance of the anode pig after treatment with a stabilizer solution of one embodiment of the present invention, after one month of stabilization, and then 47 volts. Figure. In the conventional stabilization solution, it also uses hydrazine, 1% ammonium dihydrogen phosphate and 〇.1% phosphoric acid solution. After the ammonium adipate stability solution used in the present embodiment is stabilized for one month, and then subjected to 47 volts to form a specific treatment, the specific capacitance of the formed anode foil is greater than that of the conventional ammonium dihydrogen phosphate and phosphoric acid stabilizer. The specific capacitance of the anode foil obtained after the treatment was carried out for one month and then subjected to 47 volts. The ratio of the specific capacitance after the treatment of the stabilization solution of the present embodiment to the anode of the anode obtained by the conventional method is as follows. It can be seen that, by using the technique of the present invention, the device can be changed without changing the process at all. Increase the cost, and do not damage the anode drop: :: Yang:: Production: the anode is a specific capacitance. Special two = 0σ, the effect is more significant. Because: i:!: The embodiment can be seen as 'the advantages of the present invention: the liquid is used as the anode foil of Andian w. The manufacturing method uses ammonium adipate, which is stabilized and cut, and is reduced to (4) The effect of the group of dihydrogen money. The ammonium adipate stabilizer solution of the present invention has a better safety; according to the embodiment of the invention, the method for producing the anode foil of the electrolytic capacitor of the present invention is the stabilization solution used in the stabilization treatment t 201140632 The formula is simple, so the system can be easily implemented. In view of the above-described embodiments of the present invention, the composition of the present invention can be adjusted to the structural strength and flexural strength of the plastics by adjusting the composition of the stabilization solution. Under the purpose of achieving an effective ratio of capacitance. Although the present invention has been disclosed in the above embodiments, it is not intended to be used in the art and in the spirit and scope of the present invention. The scope of the invention is set forth below for the purpose of making the above and other objects and advantages of the present invention more obvious. The description of the drawings is as follows: • Figure 1 shows the nuzzle of a conventional capacitor. Figure 2 is a flow chart showing a method of manufacturing an anode casing in accordance with an embodiment of the present invention. A kind of electrolysis electric power, 3 diagram shows the comparison of the specific capacitance under the stability of the liquid to the anode which is treated by one of the conventional and the invention, after 20 volts. Mann and in the four rhyme diagrams (10) will show the conventional and the invention's example of the stability of the liquid solution, the two extremes of the extremes of the 4 volts of the special treatment and the specific capacitance of the four types of electricity Comparison chart. Fig. 5 is a view showing a comparison of the specific capacitance of the anode foil treated with the conventional solution i Si 201140632 of one embodiment of the present invention after one month of stabilization, and then subjected to 21 volts. Fig. 6 is a view showing a comparison of specific capacitances of an anode foil which has been conventionally treated with a stabilizer solution according to an embodiment of the present invention, after being subjected to stabilization for one month, and then subjected to a 47 volt specialization treatment. [Description of main component symbols] 102: Electrode 106: Insulating layer 202: Step 206: Step d: Spacing 100: Capacitor 104: Electrode 200: Step 204: Step A: Surface area