JP2507125B2 - Electric double layer capacitor and manufacturing method thereof - Google Patents
Electric double layer capacitor and manufacturing method thereofInfo
- Publication number
- JP2507125B2 JP2507125B2 JP2082401A JP8240190A JP2507125B2 JP 2507125 B2 JP2507125 B2 JP 2507125B2 JP 2082401 A JP2082401 A JP 2082401A JP 8240190 A JP8240190 A JP 8240190A JP 2507125 B2 JP2507125 B2 JP 2507125B2
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- electric double
- double layer
- cellulose
- layer capacitor
- 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.)
- Expired - Lifetime
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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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は活性炭を分極性電極に用いる電気二重層キャ
パシタおよびその製造法に関する。TECHNICAL FIELD The present invention relates to an electric double layer capacitor using activated carbon as a polarizable electrode and a method for manufacturing the same.
従来の技術 電気二重層キャパシタは分極性電極として活性炭を用
い、活性炭と電解液との界面電気二重層に蓄積される電
気二重層容量を利用した大容量コンデンサである。この
ような電気二重層キャパシタには従来大別して次の２種
類の存在する。すなわち硫酸水溶液のような水溶液系電
解液を用いたものと、プロピレンカーボネートのような
有機溶媒に電解室を添加した有機溶液系電解液を用いた
ものである。2. Description of the Related Art An electric double layer capacitor is a large-capacity capacitor that uses activated carbon as a polarizable electrode and utilizes the electric double layer capacitance accumulated in the interface electric double layer between the activated carbon and the electrolytic solution. Such electric double layer capacitors are roughly classified into the following two types. That is, an aqueous solution type electrolytic solution such as a sulfuric acid aqueous solution and an organic solution type electrolytic solution obtained by adding an electrolytic chamber to an organic solvent such as propylene carbonate are used.
第４図および第５図は、それぞれ両者の代表例の構成
を示すものである。第４図に示すように、セパレータ41
を介して、活性炭粉末電極42、43が対向し、絶縁ゴムケ
ース44、45と導電電極46、40よりなる。活性炭粉末電極
42、43は活性炭粉末を濃硫酸水溶液でペレット状に成型
したもので硫酸水溶液はバインダの役目もする。FIG. 4 and FIG. 5 show the configurations of representative examples of both. As shown in FIG. 4, the separator 41
The activated carbon powder electrodes 42 and 43 are opposed to each other with the insulating rubber cases 44 and 45 and the conductive electrodes 46 and 40 interposed therebetween. Activated carbon powder electrode
42 and 43 are pellets made of activated carbon powder with concentrated sulfuric acid aqueous solution, and the sulfuric acid aqueous solution also serves as a binder.
一方、有機電解液系キャパシタは第５図に示す構成を
有する。活性炭粉末、弗素ポリマー、メチルアルコール
からなるペーストをアルミニウムネット50、51上に塗布
し、乾燥製膜した活性炭電極52、53をセパレータ54を介
して捲回する。これにプロピレンカーボネートとテトラ
エチルアンモニウムパークロレートとの混合溶液を含浸
してハイジングする。55、56、57、58はそれぞれ陽極リ
ード、陰極リード、ゴムキャップ、アルミニウムケース
である。On the other hand, the organic electrolytic solution type capacitor has the structure shown in FIG. A paste made of activated carbon powder, a fluoropolymer, and methyl alcohol is applied onto aluminum nets 50, 51, and dried film-formed activated carbon electrodes 52, 53 are wound via a separator 54. This is impregnated with a mixed solution of propylene carbonate and tetraethylammonium perchlorate for hiding. 55, 56, 57 and 58 are an anode lead, a cathode lead, a rubber cap and an aluminum case, respectively.
発明が解決しようとする課題 従来の二つの電解液系のキャパシタにはそれぞれ次の
ような特徴（長所と短所）がある。水溶液系の長所は電
解液の電気抵抗が低く大電流負荷放電に適することであ
り、短所は電解液の分解電圧に左右されるキャパシタの
使用耐電圧が高々1.0Vまでしか得られないことである。
高電圧での使用の時は多くのキャパシタの直列接続を余
儀なくされ、長期の使用信頼性の点で問題がある。Problems to be Solved by the Invention Two conventional electrolytic solution type capacitors each have the following features (advantages and disadvantages). The advantage of the aqueous solution is that the electric resistance of the electrolyte is low and it is suitable for large current load discharge, and the disadvantage is that the operating withstand voltage of the capacitor, which depends on the decomposition voltage of the electrolyte, can be obtained up to 1.0 V at most. .
When used at high voltage, many capacitors are forced to be connected in series, which causes a problem in terms of long-term use reliability.
一方、有機溶液系の長所は電解液の耐電圧が高い（〜
3V）ために水溶液系のものよりも高電圧使用が可能であ
る。短所は、電解液の電気抵抗のためにキャパシタの内
部抵抗が水溶液系のそれと比較して５−10倍になり大電
流負荷の用途での使用は困難であった。On the other hand, the advantage of the organic solution system is that the withstand voltage of the electrolyte is high (~
Because of 3V), it is possible to use a higher voltage than that of an aqueous solution type. The disadvantage is that the internal resistance of the capacitor is 5-10 times higher than that of the aqueous solution due to the electric resistance of the electrolytic solution, making it difficult to use in applications with large current loads.
本発明の目的は、従来の二つの種類の電解液のキャパ
シタのそれぞれの長所を合わせ持ったキャパシタを実現
しようとすることである。すなわち使用耐電圧が高く内
部抵抗の低いキャパシタを得ることである。It is an object of the present invention to realize a capacitor having the advantages of the conventional two types of electrolytic solution capacitors. That is, to obtain a capacitor having high withstand voltage and low internal resistance.
課題を解決するための手段 本発明は、上記目標を達成するためのもので、導電性
基体と導電性基体上の活性炭、水溶性のバインダ、とか
らなる層、またはこれに導電性付与剤を添加した層とを
セパレータを介して対向して配置したものと、電解液と
から構成される電気二重層キャパシタである。さらに、
水にメチルセルロースまたはカルボキシメチルセルロー
スを溶解した液と、活性炭、導電性付与剤とを混合分散
した溶液を塗布、浸漬、印刷のいずれかによってアルミ
ニウム基体上に担持し、乾燥し、セパレータを介して基
体を対向して配置することを特徴とする電気二重層キャ
パシタの製造方法である。Means for Solving the Problems The present invention is for achieving the above-mentioned object, and comprises a layer comprising an electroconductive substrate and activated carbon on the electroconductive substrate, a water-soluble binder, or a conductivity-imparting agent for the layer. The electric double layer capacitor is composed of an electrolytic solution and a layer in which the added layer is opposed to the layer via a separator. further,
Liquid in which methyl cellulose or carboxymethyl cellulose is dissolved in water, activated carbon, and a solution in which a conductivity-imparting agent is mixed and dispersed are applied, immersed, or supported on an aluminum substrate by printing, dried, and then the substrate is separated via a separator. A method of manufacturing an electric double layer capacitor, which is characterized in that the electric double layer capacitors are arranged to face each other.
作用 本発明によれば、箔状導電基体に担持された活性炭分
極性電極として、電気抵抗が低く、箔状導電基体との電
気接触性に優れかつ活性炭膜の成膜性および自己形状保
持性の良い活性炭電極組成を提供するために得られたキ
ャパシタの電気抵抗が大幅に低くなる。また、本発明の
活性炭電極組成では活性炭層の厚さを非常に薄くするこ
とができるために、電極の幾何学的な形状因子（単位キ
ャパシタ体積の中に薄い層を収納可能な電極の表面積）
からも大容量で低抵抗のキャパシタを得ることができ
る。Effect According to the present invention, the activated carbon polarizable electrode supported on the foil-shaped conductive substrate has low electric resistance, excellent electrical contact with the foil-shaped conductive substrate, and excellent film-forming property and self-shape retention of the activated carbon film. The electrical resistance of the resulting capacitor to provide a good activated carbon electrode composition is significantly reduced. Further, in the activated carbon electrode composition of the present invention, since the thickness of the activated carbon layer can be made extremely thin, the geometrical form factor of the electrode (the surface area of the electrode capable of accommodating the thin layer in the unit capacitor volume)
It is also possible to obtain a capacitor having a large capacity and a low resistance.
実施例 次に本発明の具体的な実施例について述べる。Example Next, a specific example of the present invention will be described.
（実施例−１） 活性炭粉末（比表面積:2000m2/g、平均粒径:2μｍ）1
0重量部とアセチレンブラック２重量部とを水とメタノ
ールの混合溶液に均一に分散する。カルボキシメチルセ
ルロース（CMC、カルボキシル基のプロトンの一部をNa
イオンで置換した物）２重量部を水に溶解する。両方の
液を更に混合攪拌して活性炭スラリーとする。第１図に
示すように、厚さ20μｍの化学エッチング法によって粗
面化したアルミニウム箔（10mm幅、40mm長さ）１の両面
に活性炭スラリーを浸漬法で付着する。空気中で30分乾
燥後100℃で60分遠赤外線乾燥し活性炭電極２、３を50
μｍに製膜する。なお、この膜圧は100μｍ以下であれ
ば好ましい結果が得られる。(Example-1) Activated carbon powder (specific surface area: 2000 m 2 / g, average particle size: 2 μm) 1
0 parts by weight and 2 parts by weight of acetylene black are uniformly dispersed in a mixed solution of water and methanol. Carboxymethyl cellulose (CMC, some of the protons of the carboxyl group are Na
2 parts by weight of the substance substituted with ions) are dissolved in water. Both solutions are further mixed and stirred to obtain an activated carbon slurry. As shown in FIG. 1, activated carbon slurry is attached by dipping onto both sides of an aluminum foil (10 mm width, 40 mm length) 1 having a thickness of 20 μm and roughened by a chemical etching method. Dry in the air for 30 minutes, then dry at 100 ° C for 60 minutes in the far-infrared, and activate the activated carbon electrodes 2 and 3 by 50
Form a film with a thickness of μm. It should be noted that, if this film pressure is 100 μm or less, preferable results can be obtained.
得られた箔状電極体の一対４、５を、セパレータ６を
介して捲回する。電解液としてプロピレンカーボネート
液にテトラエチルアンモニウムテトラフルオロボレート
を1mol/l溶解し、アルミニウムケース７、アルミニウム
リード電極８、９、ゴムパッキン10でハウジング完成す
る。The pair of foil-shaped electrode bodies 4 and 5 thus obtained are wound with the separator 6 in between. Tetraethylammonium tetrafluoroborate (1 mol / l) is dissolved in a propylene carbonate solution as an electrolytic solution, and a housing is completed with an aluminum case 7, aluminum lead electrodes 8 and 9, and a rubber packing 10.
（実施例−２） 実施例−１と同じ構成で、アセチレンブラックを省い
た。(Example-2) With the same configuration as in Example-1, acetylene black was omitted.
（実施例−３） 実施例−１と同じ構成で、カルボキシル基のプロトン
の一部をNH4イオンで置換したCMCを使用した。(Example-3) A CMC having the same structure as that of Example-1, in which a part of the protons of the carboxyl group was replaced with NH4 ions, was used.
（実施例−４） 実施例−１と同じ構成で、活性炭粉末の代わりに、フ
ェノール樹脂系活性炭繊維のチョップ（繊維径が10μｍ
で平均チョップ長さが0.5mm、比表面積が2300m2/g）を
使用した。(Example-4) With the same configuration as in Example-1, instead of the activated carbon powder, a chop of a phenol resin-based activated carbon fiber (fiber diameter of 10 μm
The average chop length was 0.5 mm and the specific surface area was 2300 m 2 / g).
（実施例−５） 実施例−１と同じ構成で、アセチレンブラックの代わ
りに酸化ルテニウム粉末（平均粒径が0.54μｍ）を用い
た。(Example-5) With the same configuration as that of Example-1, ruthenium oxide powder (average particle size: 0.54 µm) was used instead of acetylene black.
（実施例−６） 活性炭粉末（比表面積:2000m2/g、平均粒径:2μｍ）1
0重量部とアセチレンブラック２重量部とをアンモニア
水（濃度５重量％）に均一に分散する。カルボキシメチ
ルセルロース（CMC、カルボキシル基のプロトンの一部
をNaイオンで置換した物）２重量部を水に溶解する。両
方の液を更に混合攪拌して活性炭スラリーとする。厚さ
20μｍの化学エッチング法によって粗面化したアルミニ
ウム箔の両面に活性炭スラリーをロールコータで塗布す
る。空気中で30分乾燥後100℃で60分遠赤外線乾燥し活
性炭電極を製膜する。第２図に示すように、得られた箔
状電極体の一対を、セパレータを介して捲回し電極体20
を得る。電解液としてプロピレンカーボネート液にテト
ラエチルアンモニウムテトラフルオロボレートを1mol/l
溶解し、ステンレスケース21、アルミニウム層22を有す
るステンレス蓋23とでハウジング完成する。ただし、こ
の構成はハーメチック封口素子であり、アルミニウムの
陽、陰極リード24、25はガラス層26、27で蓋23と接合さ
れており、21と23とは接合部28で溶接されている。(Example-6) Activated carbon powder (specific surface area: 2000 m 2 / g, average particle size: 2 μm) 1
0 parts by weight and 2 parts by weight of acetylene black are uniformly dispersed in aqueous ammonia (concentration: 5% by weight). 2 parts by weight of carboxymethyl cellulose (CMC, a part of the carboxyl group protons replaced with Na ions) is dissolved in water. Both solutions are further mixed and stirred to obtain an activated carbon slurry. thickness
The activated carbon slurry is applied by a roll coater on both sides of an aluminum foil roughened by a 20 μm chemical etching method. Dry in the air for 30 minutes and then dry at 100 ° C for 60 minutes with far infrared rays to form an activated carbon electrode. As shown in FIG. 2, a pair of the obtained foil-like electrode bodies is wound with a separator interposed between the electrode bodies 20.
Get. 1 mol / l of tetraethylammonium tetrafluoroborate in propylene carbonate solution as electrolyte
After melting, a stainless steel case 21 and a stainless lid 23 having an aluminum layer 22 complete a housing. However, this structure is a hermetic sealing element, in which positive and negative aluminum leads 24 and 25 are joined to the lid 23 by the glass layers 26 and 27, and 21 and 23 are welded to each other at the joining portion 28.
（実施例−７） 活性炭繊維チョップ（比表面積:2500m2/g、平均長さ
0.2mm、繊維径８μｍ）10重量部とアセチレンブラック
２重量部とを水とメタノールの混合溶液に均一に分散す
る。カルボキシメチルセルロース（CMC、カルボキシル
基のプロトンの一部をNaイオンで置換した物）２重量部
を水に溶解する。両方の液を更に混合攪拌して活性炭ス
ラリーとする。第３図に示すように、厚さ20μｍの化学
エッチング法によって粗面化したアルミニウム箔30の片
面に活性炭スラリーを印刷法で付着する。空気中で30分
乾燥後100℃で60分遠赤外線乾燥し活性炭電極31、32を
製膜する。得られた箔状電極体を直径15mmに打ち抜きセ
パレータ33を介して配置する。電解液としてプロピレン
カーボネート液にテトラエチルアンモニウムテトラフル
オロボレートを1mol/l溶解し、ケース34、35とガスケッ
ト36とでハウジングしコイン型キャパシタを得る。(Example-7) Activated carbon fiber chop (specific surface area: 2500 m 2 / g, average length
10 parts by weight (0.2 mm, fiber diameter 8 μm) and 2 parts by weight of acetylene black are uniformly dispersed in a mixed solution of water and methanol. 2 parts by weight of carboxymethyl cellulose (CMC, a part of the carboxyl group protons replaced with Na ions) is dissolved in water. Both solutions are further mixed and stirred to obtain an activated carbon slurry. As shown in FIG. 3, an activated carbon slurry is attached by a printing method to one surface of an aluminum foil 30 roughened by a chemical etching method having a thickness of 20 μm. After being dried in air for 30 minutes, dried by far infrared rays at 100 ° C. for 60 minutes to form activated carbon electrodes 31 and 32. The obtained foil electrode body is arranged with a diameter of 15 mm through a punching separator 33. Tetraethylammonium tetrafluoroborate (1 mol / l) is dissolved in a propylene carbonate solution as an electrolytic solution, and a housing is provided between the cases 34 and 35 and the gasket 36 to obtain a coin-type capacitor.
以上の実施例で得られたキャパシタの特性を比較例と
ならべて表に示す。The characteristics of the capacitors obtained in the above examples are shown in the table together with the comparative examples.
但し、比較例−１は、60μｍ厚さのアルミニウム箔の
片面に活性炭と非水溶性の有機バインダ（弗素樹脂）と
から構成される層（厚さ200μｍ）を有する捲回型キャ
パシタ。比較例−２は、活性炭素繊維織布を分極性電極
に持つコイン型キャパシタである。比較例−３は、硫酸
を電解液に用いたキャパシタの特性である。However, Comparative Example-1 is a wound-type capacitor having a layer (thickness: 200 μm) composed of activated carbon and a water-insoluble organic binder (fluorine resin) on one side of a 60 μm-thick aluminum foil. Comparative Example-2 is a coin-type capacitor having an activated carbon fiber woven fabric as a polarizable electrode. Comparative Example-3 is a characteristic of a capacitor using sulfuric acid as an electrolytic solution.
また表の中で実施例−１〜６および比較例−１の容量
は100mA放電時の1.0Vまでの到達時間を秒で、その他は
ファラッド単位で示した。信頼性は、1.8V負荷、70℃保
存1000時間後の容量変化を％で示した。Further, in the table, the capacities of Examples-1 to 6 and Comparative Example-1 are shown by the arrival time to 1.0 V at 100 mA discharge in seconds, and the others in Farad units. As for reliability, the capacity change after storage for 1.8 hours at 70 ° C and 1000 hours was shown in%.
なお、導電性基体がアルミニウム、タンタル、チタン
から選ばれた元素の板、箔、ネット、穴明け板、エクス
パンド板またはこれらの表面をエッチングしたものを利
用できる。 The conductive substrate may be a plate, a foil, a net, a perforated plate, an expanded plate of an element selected from aluminum, tantalum, or titanium, or those obtained by etching the surface thereof.
また、水溶性のバインダは、メチルセルロース、ポリ
ビニルピロリドン、ヒドロキシエチルセルロース、ポリ
ウレタン、塩化ビニル、酢酸ビニル、ポリアクリロニト
リル、ポリエステルのうちの少なくとも一つ以上から構
成できる。The water-soluble binder can be composed of at least one of methyl cellulose, polyvinyl pyrrolidone, hydroxyethyl cellulose, polyurethane, vinyl chloride, vinyl acetate, polyacrylonitrile, and polyester.
また、メチルセルロース、エチルセルロース、カルボ
キシエチルセルロース、ヒドロキシエチルセルロースの
カルボキシル基のプロトンの少なくとも一つを、Naイオ
ン、アンモニウムイオン、アルミニウムイオンのいずれ
かで置換して利用できる。Further, at least one of the protons of the carboxyl group of methyl cellulose, ethyl cellulose, carboxyethyl cellulose and hydroxyethyl cellulose can be substituted with any one of Na ion, ammonium ion and aluminum ion for use.
さらに、導電性付与剤としては黒鉛、カーボンブラッ
ク、ケッチェンブラック、酸化ルテニウム、炭素繊維等
も用いることができる。Further, graphite, carbon black, Ketjen black, ruthenium oxide, carbon fiber and the like can be used as the conductivity imparting agent.
また、導電性付与剤として黒鉛、カーボンブラック、
ケッチェンブラック、酸化ルテニウム、炭素繊維等を利
用できる。Further, graphite, carbon black, as a conductivity imparting agent,
Ketjen black, ruthenium oxide, carbon fiber, etc. can be used.
さらに、活性炭は粉末状、繊維状のいずれでああって
もよい。Further, the activated carbon may be in the form of powder or fibers.
発明の効果 以上のように本発明によれば、有機電解液の特徴であ
る耐電圧を高く保持しながら水溶液系電解液を用いたキ
ャパシタと同等以上の内部抵抗と放電特性を得ることが
でき、インピーダンスの周波数依存性も非常に小さくな
る。As described above, according to the present invention, it is possible to obtain internal resistance and discharge characteristics equal to or higher than those of a capacitor using an aqueous electrolyte while maintaining a high withstand voltage, which is a characteristic of an organic electrolyte. The frequency dependence of impedance is also very small.
第１図、第２図および第３図は本発明の一実施例のキャ
パシタの構成図、第４図および第５図は従来例のキャパ
シタの構成図である。 1,2,3……アルミニウム箔、4,5……箔電極、６……セパ
レータ、７……アルミケース、8,9……リード。FIGS. 1, 2 and 3 are block diagrams of a capacitor according to an embodiment of the present invention, and FIGS. 4 and 5 are block diagrams of a conventional capacitor. 1,2,3 …… Aluminum foil, 4,5 …… Foil electrodes, 6 …… Separator, 7 …… Aluminum case, 8,9 …… Lead.
Claims (4)
体の少なくとも相対向する面に形成した活性炭と、Naイ
オン、アンモニウムイオン、アルミニウムイオンのいず
れかで置換した水溶性のカルボキシエチルセルロースま
たは水溶性のカルボキシメチルセルロースから得られた
カルボキシエチルセルロースまたはカルボキシメチルセ
ルロースバインダとから成る層と、前記対向電極間に配
置したセパレータと、電解液とから構成される電気二重
層キャパシタ。1. A conductive base material facing each other, activated carbon formed on at least opposing surfaces of both conductive base materials, and water-soluble carboxyethyl cellulose substituted with any one of Na ion, ammonium ion, and aluminum ion, or An electric double layer capacitor comprising a layer composed of carboxyethyl cellulose or carboxymethyl cellulose binder obtained from water-soluble carboxymethyl cellulose, a separator arranged between the counter electrodes, and an electrolytic solution.
性付与剤を含むことを特徴とする請求項１記載の電気二
重層キャパシタ。2. The electric double layer capacitor according to claim 1, wherein a conductivity-imparting agent is contained in a layer on the conductive substrate or in an electrolytic solution.
ルセルロース、エチルセルロース、カルボキシエチルセ
ルロースのいずれか１つ以上を溶解した液と、活性炭、
とを混合分散した溶液を塗布、浸漬、印刷、ロールコー
ティング、スピンコーティング、ドクターブレードコー
ティングのいずれかによってアルミニウム基体上に担持
し、乾燥し、セパレータを介して基体を対向して配置す
ることを特徴とする電気二重層キャパシタの製造法。3. A liquid in which one or more of methyl cellulose, carboxymethyl cellulose, ethyl cellulose and carboxyethyl cellulose are dissolved in water, and activated carbon,
Characterized in that a solution prepared by mixing and dispersing is supported on an aluminum substrate by coating, dipping, printing, roll coating, spin coating, or doctor blade coating, dried, and the substrates are arranged to face each other via a separator. Method for manufacturing electric double layer capacitor.
ルコール、アンモニアのどちらか一つを添加することを
特徴とする請求項３記載の電気二重層キャパシタの製造
法。4. The method for manufacturing an electric double layer capacitor according to claim 3, wherein at least one of alcohol and ammonia is added at the time of dissolution, mixing and dispersion.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082401A JP2507125B2 (en) | 1990-03-29 | 1990-03-29 | Electric double layer capacitor and manufacturing method thereof |
| DE69128805T DE69128805T2 (en) | 1990-03-29 | 1991-03-22 | Electrolytic double layer capacitor and process for its manufacture |
| EP91104570A EP0449145B1 (en) | 1990-03-29 | 1991-03-22 | Electric double layer capacitor and method for producing the same |
| US07/676,175 US5150283A (en) | 1990-03-29 | 1991-03-28 | Electric double layer capacitor and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2082401A JP2507125B2 (en) | 1990-03-29 | 1990-03-29 | Electric double layer capacitor and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03280518A JPH03280518A (en) | 1991-12-11 |
| JP2507125B2 true JP2507125B2 (en) | 1996-06-12 |
Family
ID=13773573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2082401A Expired - Lifetime JP2507125B2 (en) | 1990-03-29 | 1990-03-29 | Electric double layer capacitor and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2507125B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3511943B2 (en) | 1999-04-01 | 2004-03-29 | トヨタ自動車株式会社 | Method of manufacturing electrode for electric double layer capacitor |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0955340A (en) * | 1995-08-17 | 1997-02-25 | Matsushita Electric Ind Co Ltd | Electric double layer capacitor and its manufacture |
| US6246568B1 (en) | 1997-06-16 | 2001-06-12 | Matsushita Electric Industrial Co., Ltd. | Electric double-layer capacitor and method for manufacturing the same |
| JP2000306784A (en) * | 1999-02-17 | 2000-11-02 | Hitachi Maxell Ltd | Electrode for capacitor, manufacture thereof, and capacitor |
| JP2008060125A (en) * | 2006-08-29 | 2008-03-13 | Mitsubishi Alum Co Ltd | Aluminum foil for electric double layer capacitor and its manufacturing method and surface roughening method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5760828A (en) * | 1980-09-09 | 1982-04-13 | Matsushita Electric Ind Co Ltd | Method of producing electric double layer capacitor |
| JPS5942448A (en) * | 1982-09-02 | 1984-03-09 | Asahi Chem Ind Co Ltd | Cartridge |
| JP2764937B2 (en) * | 1988-09-01 | 1998-06-11 | 松下電器産業株式会社 | Electric double layer capacitor |
-
1990
- 1990-03-29 JP JP2082401A patent/JP2507125B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3511943B2 (en) | 1999-04-01 | 2004-03-29 | トヨタ自動車株式会社 | Method of manufacturing electrode for electric double layer capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03280518A (en) | 1991-12-11 |
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