JPH0488619A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH0488619A JPH0488619A JP20328890A JP20328890A JPH0488619A JP H0488619 A JPH0488619 A JP H0488619A JP 20328890 A JP20328890 A JP 20328890A JP 20328890 A JP20328890 A JP 20328890A JP H0488619 A JPH0488619 A JP H0488619A
- Authority
- JP
- Japan
- Prior art keywords
- polarizable electrode
- electric double
- layer capacitor
- double layer
- electrolyte
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 29
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 150000004676 glycans Chemical class 0.000 claims abstract description 5
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 5
- 239000005017 polysaccharide Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 abstract description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 7
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 abstract description 7
- 229920001971 elastomer Polymers 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 5
- -1 tetraethylammonium tetrafluoroborate Chemical compound 0.000 abstract description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract description 4
- 238000003486 chemical etching Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- IZJSTXINDUKPRP-UHFFFAOYSA-N aluminum lead Chemical compound [Al].[Pb] IZJSTXINDUKPRP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011888 foil Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 2
- 238000012856 packing Methods 0.000 abstract 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 229920002101 Chitin Polymers 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000005486 organic electrolyte Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- QIVUCLWGARAQIO-OLIXTKCUSA-N (3s)-n-[(3s,5s,6r)-6-methyl-2-oxo-1-(2,2,2-trifluoroethyl)-5-(2,3,6-trifluorophenyl)piperidin-3-yl]-2-oxospiro[1h-pyrrolo[2,3-b]pyridine-3,6'-5,7-dihydrocyclopenta[b]pyridine]-3'-carboxamide Chemical compound C1([C@H]2[C@H](N(C(=O)[C@@H](NC(=O)C=3C=C4C[C@]5(CC4=NC=3)C3=CC=CN=C3NC5=O)C2)CC(F)(F)F)C)=C(F)C=CC(F)=C1F QIVUCLWGARAQIO-OLIXTKCUSA-N 0.000 description 1
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
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
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
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コンデ
ンサに関し とくにその組成に関すム従来の技術
電気二重層コンデンサは分極性電極として活性炭を用啄
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ａ このよ
うな電気二重層コンデンサには従来大別して次の２種類
が存在すａ 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
機溶媒に電解質を添加した有機溶液系電解液を用いたも
のであム 第５匁 第６図Ｇ＆ それぞれ両者の代表
例の構成を示すものであも 水溶液系電解液を用いたも
のは第５図に示すようく セパレータ１０を介して、活
性炭粉末からなる分極性電極１１が対向し 分極性電極
１１に接続したアルミニウムリード１２をゴムバッキン
グ１３を介して導出し セパレータ１０を介して捲回さ
れた２枚の分極性電極１１はゴムバッキング１３を介し
てアルミニウムケース１４中に密封されていも活性炭粉
末からなる分極性電極１１は活性炭粉末を濃硫酸水溶液
でベ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＆ −Ｘ 有機電解液系コンデンサは第６
図に示す構成を有すム活性炭粉末 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上
に塗布し乾燥製膜した活性炭粉末からなる分極性電極２
１をセパレータ２２を介して捲回すム 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バークロレ
ートとの混合溶液を含浸してハウジングすム ２３は導
電電極 ２４は絶縁ゴムケースであａ 第４図に従来の
電気二重層コンデンサの分極性電極の断面図を示も 第
４図において６ｂは活性炭、７ｂは結着剋 ８ｂは導電
性付与剤であも
発明が解決しようとする課題
従来の二つの電解液系の電気二重層コンデンサにはそれ
ぞれ次のような特１（長所と短所）があａ 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 コン
デンサの使用耐電圧が高々１．Ｏｖまでしか得られない
ことであも 高電圧での使用の時は多くのコンデンサの
直列接続を余儀なくされ 長期の使用での信頼性の点で
問題があム 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
が可能であム 短所は コンデンサ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また 大電流用途には電気二重
層コンデンサの単位容積光たりの容量をさらに上げるこ
とが望ましく５ 本発明はこのような課題を解決するも
ので高耐電玉 低内部抵抗を有する電気二重層コンデン
サを提供することを目的とすａ
課題を解決するための手段
この課題を解決するため本発明の電気二重層コンデンサ
（表 結着剤として多糖類およびその誘導体を用いた分
極性電極をセパレータを介して対向して配置したものと
電解液とから構成するものであム
作用
この構成により本発明の電気二重層コンデンサ（友 活
性炭と結着剤として多糖類およびその誘導体を用いた分
極性電場の分極性電極中での活性炭間の距離が従来品の
１／３以下であり分極性電極の導電性がよく抵抗が小さ
１＋ち また集電体との電気接触性に優れていも さら
に同じ容積中への活性炭の充填量が多くなも
実施例
以下本発明の一実施例の電気二重層コンデンサについて
図面を基にして説明すも
（実施例−１） 活性炭粉末（比表面積２０００ａｍ”
／ｇ）１０ ｇと導電性付与剤２ｇとカルボキシメチル
セルロース２ｇを水ｔ５０ｍｌに溶解し表面を化学エツ
チング法によって粗面化したアルミニウム箔（厚さ２０
μｍ）上に塗布し分極性電極を作製すａ 第１図におい
て、６は活性炭、７は結着剋 ８は導電性付与剤を示し
第２図に示す従来の電気二重層コンデンサの分極性電
極と比較して、分極性電極中での活性炭間の距離が１／
３以下になっていも 第２図に示すようへ 得られた分
極性電極体１の一対をセパレータ２を介して捲回すも
電解液としてプロピレンカーボネイトにテトラエチルア
ンモニウムテトラフルオロボレイトを１ ｍｏｌ／１を
溶解したものを使用上 ゴムバッキング３を介して分極
性電極１に接続したアルミニウムリード４を導出して、
アルミニウムケース５、ゴムバッキング３でハウジング
を完成すムな耘 電解液としてプロピレンカーボネイト
にテトラエチルアンモニウムテトラフルオロボレイトを
１ ！００１／１を溶解したものを使用した力丈 これ
に限定されるものではな！１〜 また 結着剤としてカ
ルボキシメチルセルロースを使用したがこれに限定され
るものではな１１〜
また 活性炭として粉末を使用したがこれに限定される
ものではなｌ、％
（実施例−２）活性炭粉末（比表面積２０００ｃｍ”／
ｇ）１０ｇと水溶性キチン２ｇを水１５０ｍ１に溶解し
表面を化学エツチング法によって粗面化シたアルミニウ
ム板上にベレット状に固形化すも 第３図に示すように
この活性炭ペレットからなる分橋性電１ｉ１ａをセパレ
ータ２ａを介して対向して配置すム 電解液としてプロ
ピレンカーボネイトにテトラエチルアンモニウムテトラ
フルオロボレイトを１ｍｏｌ／ｌを溶解したものを使用
し 絶縁性樹脂９でハウジングを完成すも
な耘 電解液としてプロピレンカーボネイトにテトラエ
チルアンモニウムテトラフルオロボレイトを１ ｍｏｌ
ハを溶解したものを使用した力曳 これに限定されるも
のではな１．％ また 結着剤としてカルボキシメチ
ルセルロースを使用したがこれに限定されるものではな
（℃
ま１＝ 活性炭として粉末を使用したがこれに限定さ
れるものではなｔ〜
（実施例−３）実施例１と同じ構成で、導電性付与剤８
を除い九
（実施例−４）実施例２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
１０μｍで、平均チョップ長さ０゜０５ｍｍ、 比表
面積２３００ ａｍ”／ｇ）を使用し九
発明の効果
以上の実施例の説明で明らかなように 本発明の電気二
重層コンデンサによれば有機電解液系の特徴である耐電
圧を高く保持しながら水溶液系電解液を用いた電気二重
層コンデンサと同等以上の内部抵抗（直流抵拡 インピ
ーダンス）と放電特性を得ることができ、インピーダン
スの周波数依存性が非常に小さくなり、その工業的価値
きわめて大なるものであも[Detailed Description of the Invention] Industrial Application Field The present invention relates to an electric double layer capacitor using activated carbon as a polarizable electrode. It is a large-capacity capacitor that utilizes the electric double layer capacitance accumulated in the electric double layer at the interface between the liquid and the electrolyte.A There are two types of electric double layer capacitors: One uses an aqueous electrolyte, and the other uses an organic solution electrolyte made by adding an electrolyte to an organic solvent such as propylene carbonate. For those using an aqueous electrolyte, as shown in FIG. Although the two polarizable electrodes 11 wound through the separator 10 are sealed in an aluminum case 14 via the rubber backing 13, the polarizable electrodes 11 made of activated carbon powder are The powder is formed into a pellet shape using a concentrated sulfuric acid aqueous solution, and the sulfuric acid aqueous solution also serves as a binder.
Mu activated carbon powder having the structure shown in the figure Polarizable electrode 2 made of activated carbon powder made by applying a paste made of fluoropolymer and methyl alcohol onto an aluminum net and drying it into a film.
1 is wound through a separator 22. This is impregnated with a mixed solution of propylene carbonate and tetraethylammonium barchlorate to form a housing. 23 is a conductive electrode. 24 is an insulating rubber case. A cross-sectional view of a polarizable electrode of a multilayer capacitor is shown. In Fig. 4, 6b is activated carbon, 7b is a binder, and 8b is a conductivity imparting agent. Problems to be Solved by the Invention Each double layer capacitor has the following characteristics 1 (advantages and disadvantages).a The advantage of an aqueous solution system is that the electrical resistance of the electrolyte is low and it is suitable for large current load discharge, and the disadvantage is that the decomposition voltage of the electrolyte is The working voltage of the capacitor is at most 1. Even though it can only be obtained up to Ov, when used at high voltage, it is necessary to connect many capacitors in series, which poses a problem in terms of reliability in long-term use.On the other hand, the advantage of organic solution system is that the electrolyte solution Because the capacitor has a high withstand voltage (~3V), it can be used at higher voltages than an aqueous solution type.The disadvantage is that the internal resistance of the capacitor is 5 to 10 times that of an aqueous solution type, making it suitable for use with large current loads. In addition, for large current applications, it is desirable to further increase the capacitance per unit volume of electric double layer capacitors.5 The present invention solves these problems by providing high electrical resistance and low internal resistance. An object of the present invention is to provide an electric double layer capacitor having the following characteristics:a Means for solving the problem In order to solve this problem, the electric double layer capacitor of the present invention It is composed of polar electrodes arranged opposite to each other with a separator interposed therebetween and an electrolyte.This structure allows the electric double layer capacitor of the present invention (with active carbon and polysaccharides and their derivatives as binders) to be used. The distance between the activated carbons in the polarizable electrode in the polarizable electric field is less than 1/3 that of conventional products, and the polarizable electrode has good conductivity and low resistance.It also has excellent electrical contact with the current collector. In addition, the amount of activated carbon packed into the same volume is large.Example The electric double layer capacitor of one embodiment of the present invention will be explained based on the drawings (Example-1). ”
Aluminum foil (thickness: 20 g), 2 g of conductivity imparting agent, and 2 g of carboxymethyl cellulose were dissolved in 50 ml of water and the surface was roughened by chemical etching.
In Fig. 1, 6 is activated carbon, 7 is a binder, and 8 is a conductivity imparting agent.A polarizable electrode of a conventional electric double layer capacitor is shown in Fig. 2. Compared to
3 or less, a pair of the obtained polarizable electrode bodies 1 is wound with a separator 2 in between as shown in FIG.
An electrolytic solution prepared by dissolving 1 mol/1 of tetraethylammonium tetrafluoroborate in propylene carbonate was used.The aluminum lead 4 connected to the polarizable electrode 1 via the rubber backing 3 was led out.
The housing is completed with 5 aluminum cases and 3 rubber backings.Propylene carbonate and 11% tetraethylammonium tetrafluoroborate are used as electrolyte! Strength using a solution of 001/1.It is not limited to this! 1~ In addition, although carboxymethyl cellulose was used as a binder, it is not limited to this. 11~ Also, although powder was used as activated carbon, it is not limited to this l,% (Example-2) Activated carbon powder (Specific surface area 2000cm”/
g) 10 g of water-soluble chitin and 2 g of water-soluble chitin were dissolved in 150 ml of water and solidified into pellets on an aluminum plate whose surface was roughened by chemical etching. The electrodes 1i1a are placed facing each other with a separator 2a in between.The electrolytic solution is a solution of 1 mol/l of tetraethylammonium tetrafluoroborate dissolved in propylene carbonate, and the housing is completed with an insulating resin 9. 1 mol of tetraethylammonium tetrafluoroborate in propylene carbonate as a liquid
Power-pulling using a dissolved material 1. It is not limited to this. % In addition, although carboxymethyl cellulose was used as a binder, it is not limited to this (°C) = Powder was used as activated carbon, but it is not limited to this (Example-3) Example Same configuration as 1, conductivity imparting agent 8
9 (Example-4) Same configuration as Example 2 except that activated carbon powder was replaced with chopped phenolic resin activated carbon fibers (fiber diameter 10 μm, average chop length 0°05 mm, specific surface area 2300 am”/g) ) As is clear from the description of the above embodiments, the electric double layer capacitor of the present invention uses an aqueous electrolyte while maintaining a high withstand voltage, which is a characteristic of an organic electrolyte. It is possible to obtain internal resistance (DC resistance impedance) and discharge characteristics that are equal to or higher than those of conventional electric double layer capacitors, and the frequency dependence of impedance is extremely small.
第１図は本発明の実施例１の電気二重層コンデンサに使
用されている分極性電極の断面医第２図は本発明の実施
例１および実施例３の電気二重層コンデンサの構成を一
部切り欠いて示す斜視医
第３図は本発明の実施例２および実施例４の電気二重層
コンデンサの構成を示す斜視文第４図は従来の電気二重
層コンデンサに使用している分極性電極の断面図
第５図は従来の水溶液電解液を用いた電気二重層コンデ
ンサの構成を一部切り欠いて示す斜視医第６図は従来の
有機溶液系電解液を用いた電気二重層コンデンサの構成
を示す斜視図であもｌ・・・・分極性電極 ６・・・・
活性炭、 ７・・・・結着剋 ８・・・・導電性付与剤
代理人の氏名 弁理士 粟野重孝 はか１名第
図
！ｂ
゛分！に＋１ｉ電１ｊＬ
第
図
繕
図Figure 1 shows a cross section of a polarizable electrode used in the electric double layer capacitor of Example 1 of the present invention. Figure 2 shows a part of the structure of the electric double layer capacitor of Example 1 and Example 3 of the present invention. FIG. 3 is a cutaway perspective view showing the structure of electric double layer capacitors according to embodiments 2 and 4 of the present invention. FIG. A cross-sectional view of FIG. 5 shows the structure of an electric double layer capacitor using a conventional aqueous electrolyte, with a part cut away. FIG. 6 shows the structure of an electric double layer capacitor using a conventional organic electrolyte. In the perspective view shown, Polarizable electrode 6...
Activated carbon, 7... Binding 8... Conductivity imparting agent Name of agent Patent attorney Shigetaka Awano Figure 1! b ゛minute! To +1i electric 1jL diagram repair drawing
Claims (4)
その誘導体のうち少なくとも一つ以上を含む電気二重層
コンデンサ。(1) An electric double layer capacitor in which the polarizable electrode contains activated carbon and at least one of polysaccharides and derivatives thereof as a binder.
１記載の電気二重層コンデンサ。(2) The electric double layer capacitor according to claim 1, wherein the polysaccharide or its derivative is water-soluble.
電気二重層コンデンサ。(3) The electric double layer capacitor according to claim 1, wherein the polarizable electrode contains a conductivity imparting agent.
いずれかひとつ以上である請求項１記載の電気二重層コ
ンデンサ。(4) The electric double layer capacitor according to claim 1, wherein the activated carbon is in one or more of powdered, fibrous, chopped, and solid forms.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2203288A JP2790529B2 (en) | 1990-07-31 | 1990-07-31 | Electric double layer capacitor |
| 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 |
|---|---|---|---|
| JP2203288A JP2790529B2 (en) | 1990-07-31 | 1990-07-31 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0488619A true JPH0488619A (en) | 1992-03-23 |
| JP2790529B2 JP2790529B2 (en) | 1998-08-27 |
Family
ID=16471564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2203288A Expired - Fee Related JP2790529B2 (en) | 1990-03-29 | 1990-07-31 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2790529B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997028547A1 (en) * | 1996-02-02 | 1997-08-07 | Takeda Chemical Industries, Ltd. | Activated carbon electrode and process for producing the same |
| EP0863520A2 (en) * | 1997-03-07 | 1998-09-09 | Koslow Technologies Corporation | Electrode manufacturing process and flow-through capacitor produced therefrom |
| WO1998058397A1 (en) * | 1997-06-16 | 1998-12-23 | Matsushita Electric Industrial Co., Ltd. | Electric double-layer capacitor and method for manufacturing the same |
| US6631074B2 (en) | 2000-05-12 | 2003-10-07 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US6813139B2 (en) | 2001-11-02 | 2004-11-02 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| KR100476300B1 (en) * | 2002-04-12 | 2005-03-15 | 한국과학기술원 | Electrode of Electric Double Layer Capacitor |
| US7227737B2 (en) | 2004-04-02 | 2007-06-05 | Maxwell Technologies, Inc. | Electrode design |
| US7245478B2 (en) | 2004-08-16 | 2007-07-17 | Maxwell Technologies, Inc. | Enhanced breakdown voltage electrode |
| US7295423B1 (en) | 2003-07-09 | 2007-11-13 | Maxwell Technologies, Inc. | Dry particle based adhesive electrode and methods of making same |
| US7310219B2 (en) | 2003-05-09 | 2007-12-18 | Tdk Corporation | Electrochemical capacitor |
| US7342770B2 (en) * | 2003-07-09 | 2008-03-11 | Maxwell Technologies, Inc. | Recyclable dry particle based adhesive electrode and methods of making same |
| US7352558B2 (en) | 2003-07-09 | 2008-04-01 | Maxwell Technologies, Inc. | Dry particle based capacitor and methods of making same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0266918A (en) * | 1988-09-01 | 1990-03-07 | Matsushita Electric Ind Co Ltd | Electric double layer capacitor |
-
1990
- 1990-07-31 JP JP2203288A patent/JP2790529B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0266918A (en) * | 1988-09-01 | 1990-03-07 | Matsushita Electric Ind Co Ltd | Electric double layer capacitor |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997028547A1 (en) * | 1996-02-02 | 1997-08-07 | Takeda Chemical Industries, Ltd. | Activated carbon electrode and process for producing the same |
| EP0863520A2 (en) * | 1997-03-07 | 1998-09-09 | Koslow Technologies Corporation | Electrode manufacturing process and flow-through capacitor produced therefrom |
| EP0863520A3 (en) * | 1997-03-07 | 1998-11-11 | Koslow Technologies Corporation | Electrode manufacturing process and flow-through capacitor produced therefrom |
| US6022436A (en) * | 1997-03-07 | 2000-02-08 | Koslow Technologies Corporation | Electrode manufacturing process and flow-through capacitor produced therefrom |
| EP0948005A4 (en) * | 1997-06-16 | 2006-03-22 | Matsushita Electric Ind Co Ltd | Electric double-layer capacitor and method for manufacturing the same |
| WO1998058397A1 (en) * | 1997-06-16 | 1998-12-23 | Matsushita Electric Industrial Co., Ltd. | Electric double-layer capacitor and method for manufacturing the same |
| US6246568B1 (en) | 1997-06-16 | 2001-06-12 | Matsushita Electric Industrial Co., Ltd. | Electric double-layer capacitor and method for manufacturing the same |
| US6631074B2 (en) | 2000-05-12 | 2003-10-07 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| US6813139B2 (en) | 2001-11-02 | 2004-11-02 | Maxwell Technologies, Inc. | Electrochemical double layer capacitor having carbon powder electrodes |
| KR100476300B1 (en) * | 2002-04-12 | 2005-03-15 | 한국과학기술원 | Electrode of Electric Double Layer Capacitor |
| US7310219B2 (en) | 2003-05-09 | 2007-12-18 | Tdk Corporation | Electrochemical capacitor |
| US7295423B1 (en) | 2003-07-09 | 2007-11-13 | Maxwell Technologies, Inc. | Dry particle based adhesive electrode and methods of making same |
| US7342770B2 (en) * | 2003-07-09 | 2008-03-11 | Maxwell Technologies, Inc. | Recyclable dry particle based adhesive electrode and methods of making same |
| US7352558B2 (en) | 2003-07-09 | 2008-04-01 | Maxwell Technologies, Inc. | Dry particle based capacitor and methods of making same |
| US11430613B2 (en) | 2003-07-09 | 2022-08-30 | Tesla, Inc. | Recyclable dry-particle based adhesive electrode and methods of making same |
| US7227737B2 (en) | 2004-04-02 | 2007-06-05 | Maxwell Technologies, Inc. | Electrode design |
| US7245478B2 (en) | 2004-08-16 | 2007-07-17 | Maxwell Technologies, Inc. | Enhanced breakdown voltage electrode |
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| Publication number | Publication date |
|---|---|
| JP2790529B2 (en) | 1998-08-27 |
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