JPS61134011A - Manufacture of electric double-layer capacitor - Google Patents

Manufacture of electric double-layer capacitor

Info

Publication number
JPS61134011A
JPS61134011A JP59257164A JP25716484A JPS61134011A JP S61134011 A JPS61134011 A JP S61134011A JP 59257164 A JP59257164 A JP 59257164A JP 25716484 A JP25716484 A JP 25716484A JP S61134011 A JPS61134011 A JP S61134011A
Authority
JP
Japan
Prior art keywords
activated carbon
electric double
carbon fiber
fiber cloth
double layer
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
Application number
JP59257164A
Other languages
Japanese (ja)
Inventor
東　史郎
賢一 横山
北井　達也
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP59257164A priority Critical patent/JPS61134011A/en
Priority to US06/712,758 priority patent/US4626964A/en
Priority to DE8585103187T priority patent/DE3570945D1/en
Priority to EP85103187A priority patent/EP0156292B1/en
Publication of JPS61134011A publication Critical patent/JPS61134011A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02E60/13—Energy storage using capacitors

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は電気二重層キャパシタおよびその製造方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric double layer capacitor and a method for manufacturing the same.

〔従来の技術〕[Conventional technology]

電気ニ一層キャパシタは、たとえば第１図に示すような
電気二重層キャバノタユニノト（以下、ユニットという
）を１１１１または２１［！以上をａｌｉｆして適宜の
ケース内に封入することによってつくられるが、一般の
コンデンサに比べて静電容量が大きく、充放電が可能で
、かつ容量劣化を生しることが少なく長期信頼性に當む
ことから、電源として二次電池より優れている面があり
、最近、太陽電池のバックアップ用電源をはじめ各種の
用途に応用されるようになってきた。An electric double layer capacitor is, for example, an electric double layer capacitor (hereinafter referred to as a unit) as shown in FIG. It is made by alifing the above and sealing it in an appropriate case, but it has a larger capacitance than a general capacitor, can be charged and discharged, and has less capacity deterioration and has long-term reliability. Because of this, they are superior to secondary batteries as a power source, and have recently come to be used in a variety of applications, including backup power sources for solar cells.

ところで、上記のような電気二重層キャパシタの電極に
は、活性炭粉末や、活性炭繊維クロス、活性炭繊維フェ
ルトなどの活性炭繊維布などが用いられていたが、活性
炭粉末は静電容量と密接な関係を有する比表面積が活性
炭繊維布に比べて小さく、また活性炭繊維布は比表面積
が大きいが、空隙率が大きすぎるため、一定容積内への
充填量は活性炭粉末より少なくなり、両者とも単独では
、より太き（静電容量を高めることができないという問
題があった。By the way, activated carbon powder, activated carbon fiber cloth such as activated carbon fiber cloth, activated carbon fiber felt, etc. have been used for the electrodes of the above-mentioned electric double layer capacitor, but activated carbon powder has a close relationship with capacitance. The specific surface area of the activated carbon fiber cloth is smaller than that of the activated carbon fiber cloth, and although the activated carbon fiber cloth has a large specific surface area, the porosity is too large, so the amount of filling into a given volume is smaller than that of the activated carbon powder, and both alone have a higher specific surface area than the activated carbon fiber cloth. (There was a problem that the capacitance could not be increased.)

そのため、本発明者らは活性炭繊維布と活性炭粉末とを
併用することによって静電容量の向上をはかるべく種々
研究を重ね、活性炭繊維クロスに活性炭粉末と電解質溶
液とのスラリー状混合物を殖布し、静電容量の向上を達
成して、それについて先に特許出願した（たとえば特願
昭５９−５２７６９号）。Therefore, the present inventors have conducted various studies to improve the capacitance by using activated carbon fiber cloth and activated carbon powder together, and have spread a slurry-like mixture of activated carbon powder and electrolyte solution on activated carbon fiber cloth. , achieved an improvement in capacitance and filed a patent application for the same (for example, Japanese Patent Application No. 59-52769).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

ところが、上記のように活性炭繊維クロスと活性炭粉末
とを併用するにあたって、深川した電極作製方法は、活
性炭繊維クロスに活性炭粉末と電解質溶液とのスラリー
状混合物を塗り込み、乾燥した後、所望形状に打ち抜き
、それを電解質溶液が既に注入されているグロノ７）の
凹所に挿入し、活性炭繊維クロスと活性炭粉末とに電解
質ｉ液を含浸させるという方法であったため、咋業性面
での能率上の問題や性能面でバラツキが発生するという
問題があった。However, when using activated carbon fiber cloth and activated carbon powder together as described above, Fukagawa's method for making electrodes involves coating the activated carbon fiber cloth with a slurry mixture of activated carbon powder and electrolyte solution, drying it, and then shaping it into the desired shape. The method was to punch out a punch, insert it into the recess of the grono 7) into which the electrolyte solution had already been injected, and impregnate the activated carbon fiber cloth and activated carbon powder with the electrolyte i-liquid, which improved efficiency in terms of workability. There were problems with problems and variations in performance.

すなわち、電極完成までの工程数が多いということに加
えて、電解質溶液に硫酸水ｆｇＷ＊を使用しているため
、スラリー状混合物の塗り込み後、所定の形状に打ち抜
く際に、打陵刃が電解質溶液によって損傷を受け、また
打抜時に活性炭粉末が脱落して静電容量にバラツキが生
じるという問題があった。In other words, in addition to the large number of steps required to complete the electrode, since sulfuric acid water fgW* is used as the electrolyte solution, the punching blade may be damaged when punching into a predetermined shape after applying the slurry mixture. There were problems in that it was damaged by the electrolyte solution and activated carbon powder fell off during punching, resulting in variations in capacitance.

〔問題点を解決するための手段〕[Means for solving problems]

本発明者らは、上記のような問題点を解決するため種々
研究を重ねた結果、まず、活性炭粉末と電解質溶液との
スラリー状混合物をグロメットの凹所に注入し、ついで
その上から所定形状に打ちｌ友いた活性炭繊維布を挿入
することによって電極を作製するときは、前記従来方法
に比べてスラリー状混合物の塗り込み、乾燥工程が不要
となって工程の短縮ができ、かつ打抜時の活性炭粉末の
脱落がなくなり充填量のバラツキが解消されるとともに
、スラリー状混合物中の電解質溶液は活性炭繊維布巾に
速みやかに吸収され活性炭繊維布巾に含浸されるが、活
性炭粉末は電解質溶液はどには活性炭繊維中に吸収され
ずグロメットの底部っまり集電板近くに集積し、その結
果、集電板と電極との接触抵抗が小さくなって内部抵抗
の小さい電気二重層キャパシタが得られることを見出し
、本発明を完成するにいたった。The inventors of the present invention have conducted various studies to solve the above-mentioned problems. As a result, the inventors first injected a slurry mixture of activated carbon powder and an electrolyte solution into the recess of the grommet, and then poured it into a predetermined shape from above. When producing an electrode by inserting a punched activated carbon fiber cloth into the die, the process can be shortened by eliminating the need for applying a slurry mixture and drying process, compared to the conventional method described above. In addition, the electrolyte solution in the slurry mixture is quickly absorbed into the activated carbon fiber cloth and impregnated into the activated carbon fiber cloth. It is not absorbed into the activated carbon fibers and accumulates near the current collector plate at the bottom of the grommet.As a result, the contact resistance between the current collector plate and the electrode is reduced, resulting in an electric double layer capacitor with low internal resistance. This discovery led to the completion of the present invention.

すなわち、本発明は電極材料が活性炭繊維布と活性炭粉
末とであって、活性炭粉末が電極の集電板側に存在し、
活性炭繊維布がセパレータ側に存在する電気二重層キヤ
パンクと該電気二重層キャパシタを製造する前記特定の
方法の発明に関する。That is, in the present invention, the electrode materials are activated carbon fiber cloth and activated carbon powder, and the activated carbon powder is present on the current collector plate side of the electrode,
The invention relates to an electric double layer capacitor in which an activated carbon fiber cloth is present on the separator side, and the above-mentioned specific method for manufacturing the electric double layer capacitor.

〔実施例〕〔Example〕

つぎに、本発明の実施例を図面にしたがって説明する。 Next, embodiments of the present invention will be described with reference to the drawings.

第１図は本実施例の電気二ｆｆｉ屓キャパノタに使用さ
れたユニットを模式的に示す断面図で、第２図は本発明
の電気二重層キャパシタの一実施例を示す部分断面図で
ある。FIG. 1 is a sectional view schematically showing a unit used in the electric double layer capacitor of this embodiment, and FIG. 2 is a partial sectional view showing one embodiment of the electric double layer capacitor of the present invention.

まず、ユニットについて説明すると、ユニットは、第１
図に示すように、対向する２枚の集電板間２ａ、２ｂ間
にセパレータ３で隔離された一対の電極４ａ、４ｂを配
役し、電極４ａ、４ｂの周縁部外方に絶縁リング５ａ、
５ｂを設けてなるものである。First, to explain the unit, the unit is the first
As shown in the figure, a pair of electrodes 4a and 4b separated by a separator 3 are placed between two opposing current collector plates 2a and 2b, and an insulating ring 5a is placed outside the periphery of the electrodes 4a and 4b.
5b.

上記ユニットｌにおける集電板２ａ、２ｂは、ポリプロ
ピレンにゴムを添加した育機質材料に導電性物質として
カーボンブラ、りを添加し、厚さ０．１ｍ−のシート伏
に成形後、直径１０．０ｍ＋ｍの円形に打ち抜くことに
よって形成されており、絶縁リング５ａ、５ｂはエチレ
ン・プロピレン・ジエンゴム（ＥＰＤＭ）ｔ！！で、そ
の外径はｌｃｌ、ｏｎ＋ｓ＋、内径は７．８　ｍｍｍで
、厚さが０．３　ｍｍである。The current collector plates 2a and 2b in the above unit 1 are made by adding carbon brazing material as a conductive substance to a growth material made of polypropylene with rubber added thereto, and forming it into a sheet with a thickness of 0.1 m, and then forming the plate into a sheet with a diameter of 10 mm. The insulating rings 5a and 5b are made of ethylene propylene diene rubber (EPDM). ! Its outer diameter is lcl, on+s+, inner diameter is 7.8 mm, and thickness is 0.3 mm.

電極４ａ、４ｂは、活性炭繊維布と活性炭粉末を電極材
料とし、これに１度３３％（Ｍ量％、以下同様）の硫酸
水溶液からなる電解質溶液を含浸させたもので、本実施
例において、活性炭繊維布としては、フェノール系樹脂
のクロスを炭化、賦活化した比表面積２．００Ｏｎ？／
ｇの活性炭繊維クロスが用いられ、活性炭粉末としては
、上記と同様の活性炭繊維クロスを粉砕した平均粒子径
２９μｍの活性炭粉末が用いられている。これらの電極
４ａ、４ｂにおいて、活性炭粉末４ａｌ　、４ｂ１は集
電板２ａ、２ｂ例に存在し、活性炭繊維布４ａ２．４ｂ
２はセパレータ３（Ｉｌｌに存在する。そして、これら
の電極４ａ、４ｂは電気二重層キャパシタ形成後の外部
からの電圧印加により、一方の電極たとえば電極４ａが
負極になり、他方の電極たとえば電極４ｂが正極になる
。The electrodes 4a and 4b are made of activated carbon fiber cloth and activated carbon powder, which are impregnated once with an electrolyte solution consisting of a 33% (M%) sulfuric acid aqueous solution. The activated carbon fiber cloth is carbonized and activated phenolic resin cloth with a specific surface area of 2.00 On? /
g of activated carbon fiber cloth is used, and the activated carbon powder is an activated carbon powder with an average particle diameter of 29 μm obtained by pulverizing the same activated carbon fiber cloth as above. In these electrodes 4a, 4b, activated carbon powder 4al, 4b1 is present in the current collector plates 2a, 2b, activated carbon fiber cloth 4a2.4b
2 is present in the separator 3 (Ill). When an external voltage is applied to these electrodes 4a and 4b after forming the electric double layer capacitor, one electrode, for example, electrode 4a becomes a negative electrode, and the other electrode, for example, electrode 4b becomes the positive pole.

セパレータ３は厚さ０．０２５　ａｓの微孔性ポリプロ
ピレンフィルムよりなり、このセパレータ３によって前
記電極４ａと電極４ｂとが隔離されている。The separator 3 is made of a microporous polypropylene film having a thickness of 0.025 as, and the separator 3 separates the electrode 4a and the electrode 4b.

このユニ、ト］は次に示すようにして製造される。This unit, t] is manufactured in the following manner.

集電板２ａの周縁部に絶縁りング５ａを接着剤で固着し
て第３図に示すような容器状のグロメット１０を形成し
、このグロメット１０の凹所１０ａに、活性炭粉末１５
％と３３％硫酸水溶液からなる電解質溶液８５％とのス
ラリー状混合物を８μ２注入し、ついで、その上から厚
さ０．４　ｍ＋ｗで、直径７．５１の円形状に打ち抜い
た活性炭繊維布４ａＨを挿入し、スラリー状混合物中の
電解質ｆ４液を活性炭繊維布４ａ１に含浸させて電ｉ４
ａを作製する。An insulating ring 5a is fixed to the peripheral edge of the current collector plate 2a with adhesive to form a container-shaped grommet 10 as shown in FIG.
85% electrolyte solution consisting of 33% sulfuric acid aqueous solution was injected, and then activated carbon fiber cloth 4aH punched out into a circular shape with a thickness of 0.4 m+w and a diameter of 7.51 mm was placed on top of the slurry mixture. The activated carbon fiber cloth 4a1 is impregnated with the electrolyte f4 liquid in the slurry mixture to form an electrolyte i4.
Create a.

この電極４ａ入りグロメットにセパレータ３をかぶせて
、上下を反転しても電解質溶液などが洩れないようにす
る。A separator 3 is placed over the grommet containing the electrode 4a to prevent the electrolyte solution from leaking even if the grommet is turned upside down.

他方、前記と同様にして、集電板２ｂに絶縁リング５ｂ
を接着剤で固着して形成したグロメットの凹所に、前記
と同様の活性炭粉末と電解質溶液とのスラリー状混合物
を注入し、ついでその上から活性炭繊維布４ｂ＋を挿入
してスラリー状混合物中の電解質溶液を活性炭繊維布４
ｂ、中に含浸させて電極４ｂを作製する。On the other hand, in the same manner as above, an insulating ring 5b is attached to the current collector plate 2b.
A slurry-like mixture of activated carbon powder and an electrolyte solution similar to that described above is injected into the recess of the grommet formed by fixing the activated carbon powder with an adhesive, and then an activated carbon fiber cloth 4b+ is inserted over the slurry-like mixture. Electrolyte solution on activated carbon fiber cloth 4
b. The electrode 4b is prepared by impregnating the inside.

そして、この電極４ｂ人リグロメットに、前記のように
セパレータ３をかぶせた電極４８人リすロメットを、電
極４ａ、４ｂがセパレータ３を介して対向するように重
加合せ、絶縁リング５ａ、５ｂ間をその内周側にセパレ
ータ３の周縁部を介在させた状態で接着剤で固着してユ
ニットｌが作製される。Then, the electrode 48 grommets covered with the separator 3 as described above are superimposed on the electrode 4b grommets so that the electrodes 4a and 4b face each other with the separator 3 in between, and the insulating rings 5a and 5b The unit 1 is produced by fixing the separator 3 with an adhesive with the peripheral edge of the separator 3 interposed between the inner circumferential sides thereof.

電気二重層キャパシタは、上記のユニット１を２個積層
して、周縁部にポリプロピレン製のガスケット８を嵌着
したキャップ７内に挿入し、これにステンレスｗｉ製の
外装ケース６を嵌合し、外装ケース６の開口端部を内方
へ締め付けてガスケット８をキャップ７の周縁部と外装
ケース８の開口端部に圧接させて封口し、ユニット１を
外装ケース６、ガスケット８およびキャップ７により密
封することによって製造され、使用に際して、前記のよ
うに電圧が印加される。なお、電気二重層キャパシタを
示す第２図においては、簡略化のため、ユニット１の内
部の詳細な図示は省略されてぃ上記のような本発明の方
法によれば、従来法におけるような活性炭繊維布への活
性炭粉末と電解質溶液とのスラリー状混合物の埜込、乾
燥工程が不要であり、工程の簡略化が行なわれるととも
に、打抜きは活性炭繊維布についてのみ行なうので、従
来法による場合のような電解質溶液による打陵刃の損傷
が生じない、また、打抜きによる活性炭粉末の脱落がな
いので、静電容量のバラツキや予定量からの減少が少な
い。さらに、得られたユニット１においては、集電板２
ａ、　２ｂ側に活性体粉末４ａ１．４ｂ１が集積して存
在するので、集電板２ａ、２ｂと電極４ａ、４ｂとの接
触が密になり接触抵抗が小さくなって、内部抵抗値が小
さく、したがって放電持続時間が長いなど望ましい特性
を有する電気二重層キャパシタが得られる。The electric double layer capacitor is made by stacking two of the units 1 described above, inserting them into a cap 7 with a gasket 8 made of polypropylene fitted to the periphery, and fitting an exterior case 6 made of stainless steel to this, The open end of the outer case 6 is tightened inward and the gasket 8 is pressed against the peripheral edge of the cap 7 and the open end of the outer case 8 for sealing, and the unit 1 is sealed by the outer case 6, the gasket 8, and the cap 7. When used, a voltage is applied as described above. In FIG. 2 showing the electric double layer capacitor, detailed illustration of the inside of the unit 1 is omitted for the sake of simplicity.According to the method of the present invention as described above, activated carbon is There is no need to apply a slurry mixture of activated carbon powder and electrolyte solution to the fiber cloth, and the drying process is not necessary, simplifying the process, and punching is performed only on the activated carbon fiber cloth, unlike the conventional method. The punching blade is not damaged by the electrolyte solution, and the activated carbon powder does not fall off during punching, so there is little variation in capacitance or decrease from the planned amount. Furthermore, in the obtained unit 1, the current collector plate 2
Since the active powder 4a1.4b1 is accumulated on the a and 2b sides, the contact between the current collector plates 2a and 2b and the electrodes 4a and 4b becomes close, and the contact resistance becomes small, resulting in a small internal resistance value. Therefore, an electric double layer capacitor having desirable characteristics such as a long discharge duration can be obtained.

上記本発明の実＃！例の方法により製造された電気二重
層キャパシタと、従来法つまり活性炭繊維クロスに活性
炭粉末と電解質溶液とのスラリー状混合物を塗り込み、
乾燥後、所望形状に打を友き、これを電解質溶液が注入
されたグロメットの凹所に挿入して電極を作製した電気
二重層キャパシタの各５０個ずつについて静電容量と内
部抵抗を測定した結果を第１表に示す。The fruit of the above invention #! A slurry-like mixture of activated carbon powder and an electrolyte solution is applied to an electric double layer capacitor manufactured by the above method and a conventional method, that is, an activated carbon fiber cloth.
After drying, the capacitance and internal resistance of each 50 electric double layer capacitors were measured by punching them into the desired shape and inserting them into the recesses of the grommets into which the electrolyte solution had been injected. The results are shown in Table 1.

第　　　１　　　表 第１表に示すように、本発明の電気二重層キャパシタは
、従来の電気二重層キャパシタに比べて、静電容量のバ
ラツキが少なく、また内部抵抗が小さかった。Table 1 As shown in Table 1, the electric double layer capacitor of the present invention had less variation in capacitance and lower internal resistance than the conventional electric double layer capacitor.

なお、実施例では、活性炭繊維布として繊布である活性
炭繊維クロスを用いた場合を示したが、活性炭繊維フェ
ルトと称されている活性炭繊維不織布を用いる場合にも
実施例と同様のり１果が奏される。ただし、薄形のユニ
ットを作製するに際しては、活性炭繊維クロスの方が厚
みの薄いものを入手しやすいので通している。また、実
施例ではフェノール系の活性炭繊維クロスや活性炭粉末
を用いたが、それに限られることなく、アクリル系、レ
ーヨン系など他の系のものも用いることができる。In addition, in the example, a case was shown in which activated carbon fiber cloth, which is a woven fabric, was used as the activated carbon fiber cloth, but the same adhesive effect as in the example was obtained when using an activated carbon fiber nonwoven fabric called activated carbon fiber felt. be done. However, when producing a thin unit, activated carbon fiber cloth is used because it is easier to obtain thinner pieces. Furthermore, although phenolic activated carbon fiber cloth and activated carbon powder were used in the examples, the present invention is not limited thereto, and other types such as acrylic and rayon can also be used.

実施例では、硫酸水／８液系の電解質溶液を用いたが、
有機系の電解質溶液も用いることができる。また、実施
例で用いた活性炭粉末と＠解質溶液とのスラリー状混合
物は、活性炭粉末が１５％、電解質溶液が８５％であっ
たが、それに限られることなく、活性炭粉末が１０〜２
５％、電解質溶液が７５〜９０％程度のスラリー状混合
物であれば用いることができる。In the examples, a sulfuric acid water/8-part electrolyte solution was used.
Organic electrolyte solutions can also be used. In addition, the slurry-like mixture of activated carbon powder and electrolyte solution used in the examples contained 15% activated carbon powder and 85% electrolyte solution, but the activated carbon powder contained 10 to 2% electrolyte solution.
A slurry mixture containing about 5% electrolyte solution and about 75 to 90% electrolyte solution can be used.

また、実施例では、絶縁リング５ａ、５ｂにエチレン・
プロピレン・ジエンゴム製のものを用いたが、それに限
られることなく、ブチルゴム製の絶縁リングやポリプロ
ピレン製の絶縁リングなども用いることができる。そし
て、集電体２ａ、２ｂと絶縁リング５ａ、　５ｂとの固
着および絶縁リング５ａ、　５ｂ間の固着を接着剤によ
って行なったが、超音波溶着など他の手段によって行な
うこともできる。In addition, in the embodiment, the insulating rings 5a and 5b are made of ethylene.
Although a propylene-diene rubber insulating ring is used, the insulating ring is not limited to this, but an insulating ring made of butyl rubber, an insulating ring made of polypropylene, etc. can also be used. Although the current collectors 2a, 2b and the insulating rings 5a, 5b are fixed to each other and the insulating rings 5a, 5b are fixed to each other by adhesive, other means such as ultrasonic welding may also be used.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、本発明の電気二重層キャパシタは
、従来の電気二重層キャパシタに比べて静電容量のバラ
ツキが少なく、かつ内部抵抗が小さい、また、本発明の
製造方法によれば、従来法による場合に比べて工程を簡
略化でき生産性が向上するとともに、打抜刃の損傷や活
性炭粉末の脱落が生じない。As explained above, the electric double layer capacitor of the present invention has less variation in capacitance and lower internal resistance than the conventional electric double layer capacitor, and according to the manufacturing method of the present invention, Compared to the case using the method, the process is simplified and productivity is improved, and the punching blade is not damaged and the activated carbon powder does not fall off.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の電気二重層キャパシタに用いられたユ
ニットを示す断面図であり、第２図は本発明の電気二重
層キャパシタの一実施例を示す部分断面図である。第３
図は集電板と絶縁リングとを固着することによって形成
したグロメットを示す図で、第３図（ａ）は平面図、第
３図（ｂ）は断面図である。FIG. 1 is a sectional view showing a unit used in the electric double layer capacitor of the invention, and FIG. 2 is a partial sectional view showing an embodiment of the electric double layer capacitor of the invention. Third
The figures show a grommet formed by fixing a current collector plate and an insulating ring, with FIG. 3(a) being a plan view and FIG. 3(b) being a sectional view.

Claims (4)

【特許請求の範囲】[Claims] （１）対向する２枚の集電板間にセパレータで隔離され
た一対の電極を配設しその周縁部外方に絶縁リングを設
けてなる電気二重層キャパシタユニットを備えた電気二
重層キャパシタにおいて、電極材料が活性炭繊維布と活
性炭粉末であって、電極の集電板側に活性炭粉末が存在
し、セパレータ側に活性炭繊維布が存在していることを
特徴とする電気二重層キャパシタ。(1) In an electric double layer capacitor unit equipped with an electric double layer capacitor unit in which a pair of electrodes separated by a separator is arranged between two opposing current collector plates, and an insulating ring is provided on the outer edge of the electrodes. An electric double layer capacitor characterized in that the electrode materials are activated carbon fiber cloth and activated carbon powder, the activated carbon powder is present on the current collecting plate side of the electrode, and the activated carbon fiber cloth is present on the separator side. （２）活性炭繊維布が活性炭繊維クロスである特許請求
の範囲第１項記載の電気二重層キャパシタ。(2) The electric double layer capacitor according to claim 1, wherein the activated carbon fiber cloth is an activated carbon fiber cloth. （３）対向する２枚の集電板間にセパレータで隔離され
た一対の電極を配設しその周縁部外方に絶縁リングを設
けてなる電気二重層キャパシタユニットを備えた構造の
電気二重層キャパシタを製造するにあたり、集電板の周
縁部と絶縁リングを固着して容器状のグロメットを形成
し、このグロメットの凹所に活性炭粉末と電解質溶液と
のスラリー状混合物を注入し、ついでその上から活性炭
繊維布を挿入して電極を作製することを特徴とする電気
二重層キャパシタの製造方法。(3) An electric double layer structure that includes an electric double layer capacitor unit in which a pair of electrodes separated by a separator is arranged between two opposing current collector plates, and an insulating ring is provided outside the periphery. To manufacture a capacitor, the peripheral edge of a current collector plate and an insulating ring are fixed together to form a container-shaped grommet, a slurry-like mixture of activated carbon powder and an electrolyte solution is injected into the recess of this grommet, and then 1. A method for manufacturing an electric double layer capacitor, which comprises inserting an activated carbon fiber cloth into an electrode to prepare an electrode. （４）活性炭繊維布が活性炭繊維クロスである特許請求
の範囲第３項記載の電気二重層キャパシタの製造方法。(4) The method for manufacturing an electric double layer capacitor according to claim 3, wherein the activated carbon fiber cloth is an activated carbon fiber cloth.
JP59257164A 1984-03-19 1984-12-04 Manufacture of electric double-layer capacitor Pending JPS61134011A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP59257164A JPS61134011A (en) 1984-12-04 1984-12-04 Manufacture of electric double-layer capacitor
US06/712,758 US4626964A (en) 1984-03-19 1985-03-18 Electrical double layer capacitor and production of the same
DE8585103187T DE3570945D1 (en) 1984-03-19 1985-03-19 Electrical double layer capacitor and production of the same
EP85103187A EP0156292B1 (en) 1984-03-19 1985-03-19 Electrical double layer capacitor and production of the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59257164A JPS61134011A (en) 1984-12-04 1984-12-04 Manufacture of electric double-layer capacitor

Publications (1)

Publication Number Publication Date
JPS61134011A true JPS61134011A (en) 1986-06-21

Family

ID=17302583

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59257164A Pending JPS61134011A (en) 1984-03-19 1984-12-04 Manufacture of electric double-layer capacitor

Country Status (1)

Country Link
JP (1) JPS61134011A (en)

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