JP2003257802A - Method for manufacturing electric double-layer capacitor - Google Patents
Method for manufacturing electric double-layer capacitorInfo
- Publication number
- JP2003257802A JP2003257802A JP2002059724A JP2002059724A JP2003257802A JP 2003257802 A JP2003257802 A JP 2003257802A JP 2002059724 A JP2002059724 A JP 2002059724A JP 2002059724 A JP2002059724 A JP 2002059724A JP 2003257802 A JP2003257802 A JP 2003257802A
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- Japan
- Prior art keywords
- laminate
- electric double
- layer capacitor
- film
- manufacturing
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電気二重層キャパ
シタの製造方法に関する。TECHNICAL FIELD The present invention relates to a method for manufacturing an electric double layer capacitor.
【０００２】[0002]
【従来の技術】電気二重層キャパシタ（以下、キャパシ
タと言う）は、活性炭電極、主にアルミを用いた集電
極、セパレータ又はゲル電解質、そして活性炭電極と集
電極を接着する導電性接着剤で構成される。セパレータ
とそれを挟んでなる一対の電極と集電極には、予めホウ
フッ化テトラエチルアンモニウムのような４級アンモニ
ウム塩などを電解質とし、プロピレンカーボネートなど
を溶媒とする有機系電解液が含浸されている。それを金
属製、又は金属箔を基材とするプラスチックフィルムを
用いた外装ケースに収めて封止を行うことでキャパシタ
としている。2. Description of the Related Art An electric double layer capacitor (hereinafter referred to as a capacitor) is composed of an activated carbon electrode, a collector electrode mainly made of aluminum, a separator or a gel electrolyte, and a conductive adhesive for adhering the activated carbon electrode and the collector electrode. To be done. The separator and the pair of electrodes sandwiching the separator and the collecting electrode are previously impregnated with an organic electrolytic solution containing a quaternary ammonium salt such as tetraethylammonium borofluoride as an electrolyte and propylene carbonate as a solvent. The capacitor is made by enclosing it in an outer case using a plastic film made of metal or a metal foil as a base material and sealing it.
【０００３】[0003]
【発明が解決しようとする課題】従来技術では、キャパ
シタを小型軽量化するために、ポリオレフィン系樹脂を
ベースにしたアルミラミネートフィルムを外装ケースと
して用いた例がある（特開２０００−２００７４０号）
が、その場合は圧力をかけるため真空引きを行い、熱シ
ールを施している。キャパシタのエネルギ密度を向上さ
せるためには、キャパシタセルは単セル毎に封止せず、
幅のある袋状のラミネートフィルムに集電用アルミ箔、
活性炭電極、セパレータからなる積層体を収納すると体
積効率が上がり、体積エネルギ密度が向上するが、以下
の問題点〜がある。In the prior art, there is an example in which an aluminum laminate film based on a polyolefin resin is used as an outer case in order to reduce the size and weight of a capacitor (Japanese Patent Laid-Open No. 2000-200740).
However, in that case, vacuum is applied to apply pressure, and heat sealing is performed. In order to improve the energy density of the capacitor, the capacitor cells are not sealed individually,
Aluminum foil for current collection on a bag-shaped laminated film with a width,
When a laminated body including an activated carbon electrode and a separator is housed, the volume efficiency is increased and the volume energy density is improved, but there are the following problems.
【０００４】電極でセパレータを挟んでなる積層体か
ら引き出した集電極を束ねるための構造。
積層体を収納した後、電気を取り出す導体の接続。
導体と積層体間の絶縁。
アルミラミネートフィルム封止部からの導体引き出し
方法。
積層体と一体化した導体の引き出しにともなうアルミ
ラミネートフィルムの形状。
内部抵抗の低減。A structure for bundling collector electrodes that are drawn out from a laminated body in which a separator is sandwiched between electrodes. After accommodating the laminate, connecting the conductors to extract electricity. Insulation between conductor and stack. Method of drawing conductor from the encapsulation part of aluminum laminate film. The shape of the aluminum laminate film that accompanies the extraction of the conductor integrated with the laminate. Reduction of internal resistance.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決する本発
明の請求項１に係る電気二重層キャパシタの製造方法
は、活性炭電極を片面に接着した２枚の集電極の間に、
活性炭電極を両面に接着した集電極とセパレータとを交
互に重ね合わせて積層体とし、前記集電極は正極側、負
極側を交互に引き出して束ね、前記積層体の上面又は下
面に集めるように曲げぐせを付けたことを特徴とする。A method of manufacturing an electric double layer capacitor according to claim 1 of the present invention which solves the above-mentioned problems, comprises a method in which an activated carbon electrode is adhered to one surface between two collecting electrodes,
A collecting electrode and a separator having activated carbon electrodes adhered on both sides are alternately laminated to form a laminated body, and the collecting electrode is alternately pulled out from the positive electrode side and the negative electrode side and bundled, and bent so as to gather on the upper surface or the lower surface of the laminated body. It is characterized by having a gusset.
【０００６】上記課題を解決する本発明の請求項２に係
る電気二重層キャパシタの製造方法は、請求項１におい
て、前記曲げぐせを付けた集電極に集電端子を超音波溶
接することを特徴とする。A method of manufacturing an electric double layer capacitor according to a second aspect of the present invention for solving the above-mentioned problems is characterized in that, in the first aspect, the current collecting terminal is ultrasonically welded to the current collecting electrode having the bent shape. And
【０００７】上記課題を解決する本発明の請求項３に係
る電気二重層キャパシタの製造方法は、請求項１におい
て、前記積層体を２枚のアルミラミネートフィルムに挟
んで封止すると共に少なくとも一方の前記アルミラミネ
ートフィルムには前記積層体を収納する絞りを入れたこ
とを特徴とする。A method of manufacturing an electric double layer capacitor according to a third aspect of the present invention which solves the above-mentioned problems is the method according to the first aspect, wherein the laminate is sandwiched between two aluminum laminate films and sealed, and at least one of the two is laminated. The aluminum laminate film is provided with a diaphragm for accommodating the laminate.
【０００８】上記課題を解決する本発明の請求項４に係
る電気二重層キャパシタの製造方法は、請求項２におい
て、前記集電端子と溶着性の高いアイオノマーフィルム
を、超音波溶接の前に前記集電端子の表面に配置するこ
とを特徴とする。A method for manufacturing an electric double layer capacitor according to a fourth aspect of the present invention which solves the above-mentioned problems is the method according to the second aspect, wherein the ionomer film having high weldability to the current collecting terminal is subjected to ultrasonic welding before ultrasonic welding. It is characterized in that it is arranged on the surface of the current collecting terminal.
【０００９】上記課題を解決する本発明の請求項５に係
る電気二重層キャパシタの製造方法は、請求項３におい
て、前記アルミラミネートフィルムに前記積層体を封入
する際に、電解液を１／３ずつに分割して注入すると共
に真空引きすることを特徴とする。A method for manufacturing an electric double layer capacitor according to a fifth aspect of the present invention which solves the above-mentioned problems is the method according to the third aspect, wherein the electrolytic solution is ⅓ when encapsulating the laminate in the aluminum laminate film. It is characterized in that it is divided into individual parts and injected and vacuum is applied.
【００１０】上記課題を解決する本発明の請求項６に係
る電気二重層キャパシタの製造方法は、請求項３におい
て、前記集電端子と積層体間及び前記ラミネートフィル
ムと前記積層体間に、ラミネートフィルム内面の溶着用
樹脂よりも融点の高い絶縁フィルムを配置したことを特
徴とする。A method for manufacturing an electric double layer capacitor according to a sixth aspect of the present invention which solves the above-mentioned problems is the method according to the third aspect, wherein the current collector terminal is laminated between the laminate and the laminate film is laminated between the laminate. An insulating film having a melting point higher than that of the resin for welding on the inner surface of the film is arranged.
【００１１】[0011]
【発明の実施の形態】本発明の実施例を図１〜図４に示
す。図１に示すように、活性炭電極１、集電極２及びセ
パレータ３より積層体が構成される。即ち、積層体は、
片面にのみ活性炭電極１を接着した２枚の集電極２の間
に、活性炭電極１を両面に接着した集電極２とセパレー
タ３とを交互に重ね合わせて積層したものである。集電
極２はアルミニウム箔であり、その表面に主成分がカー
ボンの導電性塗料を塗布して活性炭電極１が接着されて
いる。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is shown in FIGS. As shown in FIG. 1, a laminated body is composed of the activated carbon electrode 1, the collector electrode 2 and the separator 3. That is, the laminated body is
A collector electrode 2 having the activated carbon electrode 1 adhered to both surfaces thereof and a separator 3 are alternately stacked and laminated between two collector electrodes 2 having the activated carbon electrode 1 adhered to only one surface thereof. The collector electrode 2 is an aluminum foil, and the surface of the collector electrode 2 is coated with a conductive paint having carbon as a main component to which the activated carbon electrode 1 is adhered.
【００１２】但し、上面及び下面に配置される集電極２
には、活性炭電極１が片面にのみ接着され、上面及び下
面以外に配置される集電極２には、活性炭電極１が両面
に接着されている。活性炭電極１は、フェノール樹脂を
水蒸気賦活して得た活性炭粉末と導電性助剤であるアセ
チレンブラック、そしてバインダとしてポリテトラフロ
ロエチレンを適量混練して、圧延装置でシート化してな
るシート電極である。また、セパレータ３はポリブチレ
ンテレフタレート繊維を圧縮してなる不織布である。However, the collector electrodes 2 arranged on the upper and lower surfaces
The active carbon electrode 1 is adhered to only one side of the electrode, and the activated carbon electrode 1 is adhered to both sides of the collector electrode 2 arranged on the surfaces other than the upper surface and the lower surface. The activated carbon electrode 1 is a sheet electrode formed by kneading an activated carbon powder obtained by activating steam of a phenol resin, acetylene black as a conductive auxiliary agent, and polytetrafluoroethylene as a binder, and forming a sheet by a rolling device. . The separator 3 is a non-woven fabric formed by compressing polybutylene terephthalate fiber.
【００１３】本発明では、図１のように、集電極２を正
極側、負極側を交互に引き出し、更に、図２に示すよう
に、積層体の上面（又は下面）に集めるよう、曲げぐせ
２ａをつけた。このように複数個ある集電極２を一つに
まとめて曲げぐせ２ａをつけることで、集電極２を積層
体の上面（又は下面）に集めることが可能になった。In the present invention, as shown in FIG. 1, the collector electrode 2 is alternately drawn out on the positive electrode side and the negative electrode side, and further bent so as to be collected on the upper surface (or the lower surface) of the laminate as shown in FIG. I attached 2a. By thus collecting a plurality of collecting electrodes 2 into one and providing the bending ridges 2a, the collecting electrodes 2 can be collected on the upper surface (or the lower surface) of the laminate.
【００１４】更に、図３に示すように、束ねた集電極２
と集電端子となる厚さ１．０ｍｍのアルミ導体４を超音
波溶接機（超音波プローブ）５でダイセット６に押し付
けて溶接した。超音波溶接機５の先端は、集電極２の束
の上から溶接するようにした。超音波溶接を行うこと
で、集電極２とアルミ導体４とを良好に接合することが
でき、接触抵抗による内部抵抗の増大や異常発熱も認め
られなかった。Further, as shown in FIG. 3, a bundled collecting electrode 2 is provided.
Then, an aluminum conductor 4 having a thickness of 1.0 mm, which serves as a current collector terminal, was pressed against the die set 6 by an ultrasonic welding machine (ultrasonic probe) 5 and welded. The tip of the ultrasonic welder 5 was welded from above the bundle of collector electrodes 2. By performing ultrasonic welding, the collector electrode 2 and the aluminum conductor 4 could be joined well, and neither increase in internal resistance due to contact resistance nor abnormal heat generation was observed.
【００１５】ここで、アルミ導体４を積層体の上面（又
は下面）に配置すると、極性の異なる集電極２とアルミ
導体４が接触して短絡を生じることになる。また、後述
するようにラミネートフィルム８ａ，８ｂを熱溶着し封
止するときに、ラミネートフィルム８ａ，８ｂ内側の溶
着層が溶けて、アルミ箔である集電極２が接触して短絡
する恐れがある。Here, when the aluminum conductor 4 is arranged on the upper surface (or the lower surface) of the laminate, the collector electrodes 2 and the aluminum conductor 4 having different polarities come into contact with each other to cause a short circuit. Further, as will be described later, when the laminated films 8a and 8b are heat-sealed and sealed, the welding layer inside the laminated films 8a and 8b may be melted and the collector electrode 2 which is an aluminum foil may come into contact and short-circuit. .
【００１６】そこで、図４に示すように、アルミ導体４
と集電極２の接合体と積層体間、積層体の周囲に絶縁用
フィルム７を配置した。絶縁用フィルム７としては、ラ
ミネートフィルム８ａ，８ｂの融点よりも３０〜５０℃
融点の高いポリオレフィン系用フィルムである厚さ０．
５ｍｍのポリプロピレンを用いた。これにより、集電極
２とアルミ導体４との短絡が防止され、また、キャパシ
タ内部の短絡を防ぐことが可能となった。Therefore, as shown in FIG.
The insulating film 7 was arranged between the joined body of the collector electrode 2 and the laminated body and around the laminated body. The insulating film 7 is 30 to 50 ° C. higher than the melting points of the laminate films 8a and 8b.
It is a polyolefin film with a high melting point.
5 mm polypropylene was used. As a result, a short circuit between the collector electrode 2 and the aluminum conductor 4 can be prevented, and a short circuit inside the capacitor can be prevented.
【００１７】アルミ導体４と一体化した積層体は積層体
上面（又は下面）にアルミ導体４が並ぶ形状を生かすた
め、図５に示すような、深い絞りを入れたアルミラミネ
ートフィルム８ｂを用いた。絞りの深さは積層体を収納
することが可能な程度のものとした。深い絞りを入れた
ラミネートフィルム８ｂ中に積層体を収納した後、電解
液を含浸させ、その後、平板状のミネートフィルム８ａ
を被せた。Since the laminated body integrated with the aluminum conductor 4 takes advantage of the shape in which the aluminum conductors 4 are arranged on the upper surface (or lower surface) of the laminated body, an aluminum laminated film 8b having a deep drawing as shown in FIG. 5 is used. . The depth of the aperture was set so that the laminated body could be stored. The laminated body is housed in a laminated film 8b with a deep drawing, then impregnated with an electrolytic solution, and then the flat plate-like minate film 8a.
Covered.
【００１８】このとき、内部抵抗の改善を狙って電解液
を所定の液量の１／３ずつに分割して注入し、毎回−９
０ｋＰａ×５分の条件で真空引きを行った。電解液の注
入と真空引きは合計３回行った。このように、電解液を
分割注入して含浸を行うと、内部抵抗を分割せずに電解
液を含浸させたときの２０Ωｃｍ2から５Ωｃｍ2に減少
させることが可能となった。At this time, in order to improve the internal resistance, the electrolytic solution is divided into ⅓ of a predetermined amount and injected, and each time -9.
Vacuuming was performed under the condition of 0 kPa × 5 minutes. Injection of the electrolytic solution and evacuation were performed three times in total. In this way, when the electrolytic solution is dividedly injected and impregnated, the internal resistance can be reduced from 20 Ωcm 2 when the electrolytic solution is impregnated without dividing the internal resistance to 5 Ωcm 2 .
【００１９】使用したアルミラミネートフィルム８ａ，
８ｂはアルミ箔４０μｍをベースとし、表面にナイロン
層２５μｍ、溶着層にリニア低密度ポリエチレン３５μ
ｍからなるフィルムを使用している。このように、アル
ミラミネートフィルムに深い絞りを入れることで積層体
の収納を可能にし、かつアルミ導体の引き出しが容易に
行うことが可能となった。The aluminum laminate film 8a used,
8b is based on aluminum foil 40μm, nylon layer 25μm on the surface, linear low density polyethylene 35μ on the welding layer
A film made of m is used. As described above, it becomes possible to store the laminated body and to easily draw out the aluminum conductor by inserting a deep drawing into the aluminum laminated film.
【００２０】尚、アルミ導体４とラミネートフィルム８
ａ，８ｂの間にアルミ導体４と溶着性の高い０．３ｍｍ
厚さのアイオノマーフィルムを配置し、１６０℃のヒー
タで２０秒間熱溶着した。アルミ導体４の熱容量が大き
く、またアルミ導体４から熱伝導と対流で逃げる熱が多
いため、超音波溶接の前に、熱溶着性のフィルムである
アイオノマーフィルムを熱溶着するのが望ましいためで
ある。The aluminum conductor 4 and the laminated film 8
Highly weldable with aluminum conductor 4 between a and 8b 0.3mm
An ionomer film having a thickness was arranged and heat-welded with a heater at 160 ° C. for 20 seconds. This is because the aluminum conductor 4 has a large heat capacity and a large amount of heat escapes from the aluminum conductor 4 due to heat conduction and convection. Therefore, it is desirable to heat-bond an ionomer film that is a heat-welding film before ultrasonic welding. .
【００２１】このように、アルミ導体４に予め熱溶着性
のフィルムを熱溶着することで、封止構造をとったとき
に、アルミ導体４と熱溶着フィルム間の液漏れや水分浸
入が防止でき、温度６０℃、湿度９０％ＲＨ、時間１週
間の確認試験でも水分浸入がアルミラミネートフィルム
同士だけの場合とほぼ同等程度であった。In this way, by heat-welding the heat-welding film to the aluminum conductor 4 in advance, it is possible to prevent liquid leakage and water infiltration between the aluminum conductor 4 and the heat-welding film when the sealing structure is taken. In a confirmation test at a temperature of 60 ° C., a humidity of 90% RH, and a time of 1 week, moisture penetration was almost the same as in the case where only the aluminum laminate films were joined together.
【００２２】[0022]
【発明の効果】以上、実施例に基づいて具体的に説明し
たように、本発明によれば、複数個ある集電極を一つに
まとめて曲げぐせをつけることで集電極を積層体の上面
又は下面に集めることが可能になった。また、超音波溶
接を行うことで集電極とアルミ導体を良好に接合するこ
とができ、接触抵抗による内部抵抗の増大や異常発熱も
認められなかった。更に、アルミ導体・集電極接合体−
積層体間と積層体周囲に絶縁用フィルムを設けることで
キャパシタ内部の短絡を防ぐことが可能となった。As described above in detail with reference to the embodiments, according to the present invention, a plurality of collector electrodes are combined into one and bent so that the collector electrodes are provided on the upper surface of the laminate. Or it is possible to collect on the bottom. Further, the ultrasonic welding was able to satisfactorily bond the collector electrode and the aluminum conductor, and neither increase in internal resistance due to contact resistance nor abnormal heat generation was observed. Furthermore, aluminum conductor / collector electrode assembly
By providing an insulating film between the laminated bodies and around the laminated bodies, it becomes possible to prevent a short circuit inside the capacitor.
【００２３】しかも、アルミ導体に予め熱溶着性のフィ
ルムを熱溶着することで封止構造をとったときにアルミ
導体と熱溶着フィルム間の液漏れや水分浸入が防止でき
た。アルミラミネートフィルムに深い絞りを入れること
で積層体の収納を可能にし、かつアルミ導体の引き出し
が容易に行うことが可能となった。電解液を分割して真
空引きすることにより含浸を行うと、分割せずに電解液
を含浸させたときの内部抵抗を減少させることが可能と
なった。Moreover, by previously heat-welding the heat-welding film to the aluminum conductor, it is possible to prevent liquid leakage and water infiltration between the aluminum conductor and the heat-welding film when the sealing structure is adopted. By making a deep squeeze in the aluminum laminate film, it became possible to store the laminate and to easily pull out the aluminum conductor. When impregnation is performed by dividing the electrolyte solution and drawing a vacuum, it becomes possible to reduce the internal resistance when the electrolyte solution is impregnated without dividing.
【図１】活性炭電極、集電極及びセパレータよりなる積
層体の構成図である。FIG. 1 is a configuration diagram of a laminated body including an activated carbon electrode, a collecting electrode, and a separator.
【図２】積層体の上面（又は下面）に集めるよう曲げぐ
せをつけた集電極の説明図である。FIG. 2 is an explanatory view of a collecting electrode having a bent shape so as to collect on an upper surface (or a lower surface) of a laminate.
【図３】集電極と集電端子との超音波溶接の説明図であ
る。FIG. 3 is an explanatory diagram of ultrasonic welding of a collector electrode and a collector terminal.
【図４】積層体の周囲に配置した絶縁フィルムを説明図
である。FIG. 4 is an explanatory view of an insulating film arranged around a laminated body.
【図５】深絞りラミネートフィルムへの積層体の配置を
示す説明図である。FIG. 5 is an explanatory diagram showing an arrangement of a laminate on a deep-drawing laminated film.
【図６】ラミネートフィルムへの積層体の封止を示す説
明図である。FIG. 6 is an explanatory diagram showing sealing of the laminate with a laminate film.
１ 活性炭電極 ２ アルミ箔 ３ セパレータ ４ アルミ導体 ５ 超音波溶接機（超音波プローブ） ６ ダイセット ７ 絶縁フィルム ８ａ，８ｂ ラミネートフィルム ９ 熱溶着部 1 Activated carbon electrode 2 Aluminum foil 3 separator 4 Aluminum conductor 5 Ultrasonic welding machine (ultrasonic probe) 6 die set 7 Insulating film 8a, 8b Laminated film 9 Thermal weld
Claims (6)
極の間に、活性炭電極を両面に接着した集電極とセパレ
ータとを交互に重ね合わせて積層体とし、前記集電極は
正極側、負極側を交互に引き出して束ね、前記積層体の
上面又は下面に集めるように曲げぐせを付けたことを特
徴とする電気二重層キャパシタの製造方法。1. A laminated body in which a collecting electrode having an activated carbon electrode adhered to both sides and a separator are alternately laminated between two collecting electrodes having an activated carbon electrode adhered to one surface to form a laminated body, wherein the collecting electrode is a positive electrode side, A method for manufacturing an electric double layer capacitor, characterized in that the negative electrode sides are alternately drawn out and bundled, and a bend is attached so as to gather on the upper surface or the lower surface of the laminate.
を超音波溶接することを特徴とする請求項１記載の電気
二重層キャパシタの製造方法。2. The method of manufacturing an electric double layer capacitor according to claim 1, wherein a current collecting terminal is ultrasonically welded to the current collecting electrode having the bent shape.
ィルムに挟んで封止すると共に少なくとも一方の前記ア
ルミラミネートフィルムには前記積層体を収納する絞り
を入れたことを特徴とする請求項１記載の電気二重層キ
ャパシタの製造方法。3. The laminate is sandwiched between two aluminum laminate films for sealing, and at least one of the aluminum laminate films has a diaphragm for accommodating the laminate. Of manufacturing electric double layer capacitor of.
ーフィルムを、超音波溶接前に前記集電端子の表面に配
置することを特徴とする請求項２記載の電気二重層キャ
パシタの製造方法。4. The method of manufacturing an electric double layer capacitor according to claim 2, wherein an ionomer film having high weldability to the current collecting terminal is arranged on the surface of the current collecting terminal before ultrasonic welding.
層体を封入する際に、電解液を１／３ずつに分割して注
入すると共に真空引き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方法。5. The electric double layer capacitor according to claim 3, wherein when encapsulating the laminate in the aluminum laminate film, the electrolytic solution is divided into ⅓ and injected, and vacuum is applied. Manufacturing method.
ートフィルムと前記積層体間に、ラミネートフィルム内
面の溶着用樹脂よりも融点の高い絶縁フィルムを配置し
たことを特徴とする請求項３記載の電気二重層キャパシ
タの製造方法。6. An insulating film having a melting point higher than that of the welding resin on the inner surface of the laminate film is arranged between the collector terminal and the laminate and between the laminate film and the laminate. Of manufacturing electric double layer capacitor of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002059724A JP2003257802A (en) | 2002-03-06 | 2002-03-06 | Method for manufacturing electric double-layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002059724A JP2003257802A (en) | 2002-03-06 | 2002-03-06 | Method for manufacturing electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003257802A true JP2003257802A (en) | 2003-09-12 |
Family
ID=28669301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002059724A Pending JP2003257802A (en) | 2002-03-06 | 2002-03-06 | Method for manufacturing electric double-layer capacitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100644529B1 (en) | 2005-10-13 | 2006-11-10 | 엘지전자 주식회사 | Separator sheet and method for manufacturing electric double layer capacitor using the same |
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