JPH11251200A - Electrode and electric double layer capacitor using the same - Google Patents
Electrode and electric double layer capacitor using the sameInfo
- Publication number
- JPH11251200A JPH11251200A JP10054777A JP5477798A JPH11251200A JP H11251200 A JPH11251200 A JP H11251200A JP 10054777 A JP10054777 A JP 10054777A JP 5477798 A JP5477798 A JP 5477798A JP H11251200 A JPH11251200 A JP H11251200A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- activated carbon
- electric double
- layer capacitor
- collector
- 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
Links
- 239000003990 capacitor Substances 0.000 title claims description 25
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 21
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000000853 adhesive Substances 0.000 claims abstract description 12
- 230000001070 adhesive effect Effects 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000011245 gel electrolyte Substances 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000003115 supporting electrolyte Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 2
- 229920002239 polyacrylonitrile Polymers 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical group CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- -1 tetraethylammonium tetrafluoroborate Chemical compound 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
【0001】[0001]
【発明の属する技術分野】本発明は電極及びこれを用い
た電気二重層キャパシタに関し、特に当該電気二重層キ
ャパシタにおいて金属の集電極と活性炭電極とを一体化
する際に適用して有用なものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrode and an electric double-layer capacitor using the same, and more particularly to an electric double-layer capacitor useful in integrating a metal collecting electrode and an activated carbon electrode in the electric double-layer capacitor. is there.
【0002】[0002]
【従来の技術】現在パソコンやオフコンのバックアップ
電源に用いられているキャパシタはさらなる大容量化、
長寿命化が求められている。電気二重層キャパシタは分
極性電極に電解質中のアニオン、カチオンを正極、負極
表面に物理吸着させて電気を蓄えることを原理としてお
り、構造上、分極性電極として活性炭を、集電極には主
に金属系のものを用いている。2. Description of the Related Art Capacitors currently used as backup power supplies for personal computers and office computers have been increased in capacity.
Long life is required. The principle of an electric double layer capacitor is to store electricity by physically adsorbing anions and cations in the electrolyte to the positive and negative electrode surfaces on a polarizable electrode. Metal-based materials are used.
【0003】[0003]
【発明が解決しようとする課題】電気二重層キャパシタ
は電解質と活性炭、集電板からなるが、内部抵抗の小さ
いキャパシタを製作する場合以下のような点に留意する
必要がある。 .活性炭電極と金属集電極を接合するのに導電性接着
剤を用いているため、導電性接着剤の塗布量が多すぎる
場合には活性炭中に接着剤が侵入することがある。 .接着剤の塗布量が多すぎる場合には活性炭電極の有
効面積が減少し、静電容量が減少する。The electric double layer capacitor is composed of an electrolyte, activated carbon, and a current collector. When manufacturing a capacitor having a small internal resistance, it is necessary to pay attention to the following points. . Since the conductive adhesive is used to join the activated carbon electrode and the metal collecting electrode, the adhesive may enter the activated carbon when the amount of the applied conductive adhesive is too large. . If the amount of the adhesive applied is too large, the effective area of the activated carbon electrode decreases, and the capacitance decreases.
【0004】本発明は、上述の如き問題点に鑑み、金属
の集電極と活性炭電極との一体化を良好に行い静電容量
の低下を生起することのない電極及びこれを用いた電気
二重層キャパシタを提供することを目的とする。SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an electrode capable of satisfactorily integrating a metal collecting electrode and an activated carbon electrode without causing a decrease in capacitance, and an electric double layer using the same. An object is to provide a capacitor.
【0005】[0005]
【課題を解決するための手段】上記目的を達成する本発
明の構成は次の点を特徴とする。The structure of the present invention that achieves the above object has the following features.
【0006】1) アルミ、銅、ニッケル等の金属又は
カーボンシートを用いた集電極上にスクリーンメッシュ
を用いてカーボンペースト、銀ペースト等の導電性接着
剤を塗布して活性炭繊維布又は活性炭シートを接着して
作製したこと。1) A conductive adhesive such as a carbon paste or a silver paste is applied on a collector using a metal such as aluminum, copper, nickel or the like or a carbon sheet using a screen mesh to form an activated carbon fiber cloth or an activated carbon sheet. It was made by bonding.
【0007】2) 上記1)で作製した電極を用いると
ともに、有機溶液系のゲル電解質を支持電解質としたこ
と。2) The electrode prepared in the above 1) is used, and a gel electrolyte of an organic solution is used as a supporting electrolyte.
【0008】3) アルミ、銅、ニッケル等の金属又は
カーボンシートを用いた集電極の一方の面上にスクリー
ンメッシュを用いてカーボンペースト、銀ペースト等の
導電性接着剤を塗布して活性炭繊維布又は活性炭シート
を接着するとともに、集電極の他方の面上にも同様の方
法で同様の活性炭繊維布又は活性炭シートを接着して作
製したこと。3) Activated carbon fiber cloth by applying a conductive adhesive such as a carbon paste or a silver paste on one surface of a collector using a metal such as aluminum, copper or nickel or a carbon sheet by using a screen mesh. Alternatively, the same activated carbon fiber cloth or activated carbon sheet is adhered on the other surface of the collecting electrode by the same method, while the activated carbon sheet is adhered.
【0009】4) 請求項3で作製した電極を用いると
ともに、有機溶液系の複数個のゲル電解質を支持電解質
としたこと。[0011] 4) The electrode prepared in claim 3 is used, and a plurality of organic solution-based gel electrolytes are used as supporting electrolytes.
【0010】[0010]
【発明の実施の形態】以下本発明の実施の形態を図面に
基づき詳細に説明する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【0011】図1は本形態に係る電気二重層キャパシタ
を概念的に示す説明図である。同図に示すように、本形
態に係る電気二重層キャパシタは、一組の集電極1,
1、活性炭電極2,2を有機溶媒系のゲル電解質3の両
側に配設してこのゲル電解質3を挾持したものである。
このとき電極間隔は電極間板4で確保するようになって
いる。また、集電極1の板は純アルミ板、活性電極2は
活性炭を使用し、両者を結合する導電性接着剤はカーボ
ンペースト(エポキシ樹脂をベースとし、導電性のある
ケチェンブラック、アセチレンブラックなどを混錬した
接着剤)を使用した。キャパシタの電解質はテトラエチ
ルアンモニウム四フッ化ホウ酸塩(TEABF4 )、溶
媒はプロピレンカーボネート(PC)、ポリマーはポリ
アクリロニトリル(PAN)である。FIG. 1 is an explanatory view conceptually showing an electric double layer capacitor according to this embodiment. As shown in the figure, the electric double layer capacitor according to the present embodiment has a
1. Activated carbon electrodes 2 and 2 are arranged on both sides of an organic solvent-based gel electrolyte 3 to hold the gel electrolyte 3 therebetween.
At this time, the electrode interval is secured by the electrode plate 4. The collector electrode 1 is made of a pure aluminum plate, the active electrode 2 is made of activated carbon, and the conductive adhesive for bonding the two is carbon paste (based on epoxy resin, conductive Ketjen black, acetylene black, etc.). Adhesive). Electrolyte capacitors tetraethylammonium tetrafluoroborate (TEABF 4), the solvent is propylene carbonate (PC), the polymer is polyacrylonitrile (PAN).
【0012】電極は、具体的には次のような方法により
作製する。すなわち、集電極1と活性炭電極2との接合
のため、図2(a)、(b)に示すように、スクリーン
メッシュが張ってあるスクリーン部5aと乳剤マスク部
5bとを有するマスク5のスクリーンメッシュを介して
導電性接着剤であるカーボンペースト6を塗布する。す
なわち、ヘラ7でカーボンペースト6をスクリーンメッ
シュ上に伸ばす。その後活性炭繊維布を接着する。スク
リーンメッシュは乳剤厚100μm、スクリーン150
メッシュのものを用いた。カーボンペースト6の塗布量
は重量で管理でき、上述の如きスクリーンメッシュを用
いると単位面積当たりのカーボンペースト量を20〜3
0mg/cm2 の範囲内で塗布することが可能となる。この
とき、台8上に集電極1が載置してあり、この集電極1
上にマスク5が載置してある。The electrodes are specifically manufactured by the following method. That is, as shown in FIGS. 2A and 2B, a screen of a mask 5 having a screen mesh 5a and an emulsion mask 5b, as shown in FIGS. 2 (a) and 2 (b), for joining the collector electrode 1 and the activated carbon electrode 2. A carbon paste 6 as a conductive adhesive is applied through a mesh. That is, the carbon paste 6 is spread on the screen mesh by the spatula 7. Then, the activated carbon fiber cloth is bonded. The screen mesh has an emulsion thickness of 100 μm and a screen 150
A mesh mesh was used. The application amount of the carbon paste 6 can be controlled by weight. When the screen mesh as described above is used, the amount of the carbon paste per unit area is reduced to 20 to 3
It is possible to apply within a range of 0 mg / cm 2 . At this time, the collecting electrode 1 is placed on the table 8 and the collecting electrode 1
A mask 5 is placed on the top.
【0013】カーボンペースト塗布量と電気二重層キャ
パシタの静電容量の関係を図3に示す。同図を参照すれ
ば、スクリーンメッシュによる塗布の結果から良好な接
合を得て、静電容量を損なわぬ接合が可能となっている
ことが分かる。FIG. 3 shows the relationship between the amount of carbon paste applied and the capacitance of the electric double layer capacitor. Referring to the figure, it can be seen from the result of the application using the screen mesh that good bonding is obtained and bonding without impairing the capacitance is possible.
【0014】上述の如き電極の作製方法と同様のスクリ
ーンメッシュの使用条件を用いて電極である活性炭を活
性炭シートに変更しても、活性炭繊維布の場合と同様に
良好な接合が可能であり、活性炭繊維布と同等、又はよ
り以上の静電容量が確保できる。この場合の静電容量の
測定結果を図4に示す。[0014] Even if the activated carbon as an electrode is changed to an activated carbon sheet using the same screen mesh conditions as in the above-described method for producing an electrode, good bonding can be achieved as in the case of the activated carbon fiber cloth. Capacitance equal to or greater than that of activated carbon fiber cloth can be secured. FIG. 4 shows the measurement results of the capacitance in this case.
【0015】上述の如き電極の作製方法をを金属を主と
した集電極両面に実施することでバイポーラ形の電極を
作製することができる。すなわち、集電極1の一方の面
上にスクリーンメッシュを用いてカーボンペースト6塗
布して活性炭繊維布又は活性炭シートを接着するととも
に、集電極1の他方の面上にも同様の方法で同様の活性
炭繊維布又は活性炭シートを接着する。A bipolar electrode can be manufactured by performing the above-described electrode manufacturing method on both surfaces of a collector mainly composed of metal. That is, the carbon paste 6 is applied to one surface of the collector 1 using a screen mesh to bond the activated carbon fiber cloth or the activated carbon sheet, and the same activated carbon is applied to the other surface of the collector 1 in the same manner. Adhere fiber cloth or activated carbon sheet.
【0016】図5は本発明の他の実施の形態に係る電気
二重層キャパシタを概念的に示す説明図である。この電
気二重層キャパシタは上述の如き作製方法により得られ
る電極を使用するもので、電気二重層キャパシタ素子を
複数個(図では3個)直列に接続したものである。同図
に示すように、1は集電極、2は活性炭電極、3は有機
溶媒系のゲル電解質、4は電極間板であり、これらは図
1に示すものと全く同一であるが、中央部の2箇所の電
極が上述の如き作製方法により集電極1の両面に活性炭
電極2を設けたバイポーラ形の電極Iとなっている。FIG. 5 is an explanatory view conceptually showing an electric double layer capacitor according to another embodiment of the present invention. This electric double layer capacitor uses electrodes obtained by the above-described manufacturing method, and has a plurality (three in the figure) of electric double layer capacitor elements connected in series. As shown in the figure, 1 is a collecting electrode, 2 is an activated carbon electrode, 3 is an organic solvent-based gel electrolyte, and 4 is an interelectrode plate. These are exactly the same as those shown in FIG. These two electrodes are bipolar electrodes I in which activated carbon electrodes 2 are provided on both surfaces of the collector electrode 1 by the above-described manufacturing method.
【0017】[0017]
【発明の効果】以上実施の形態とともに具体的に説明し
た通り、本発明によれば次のような効果を得る。 .活性炭繊維布電極接合により、活性炭繊維布の持つ
静電容量をできるかぎり損ねないような電気二重層キャ
パシタを作製することができる。 .活性炭繊維布を活性炭シートに変更しても活性炭の
持つ静電容量をできる限り損ねないような電気二重層キ
ャパシタを作製することができる。 .バイポーラ電極により単セル積層した場合と比較し
て電気二重層キャパシタのサイズを25%小型化でき
る。According to the present invention, the following effects can be obtained as described in detail with the embodiments. . By the activated carbon fiber cloth electrode bonding, it is possible to produce an electric double layer capacitor in which the capacitance of the activated carbon fiber cloth is not impaired as much as possible. . Even if the activated carbon fiber cloth is changed to an activated carbon sheet, it is possible to manufacture an electric double layer capacitor that does not impair the capacitance of the activated carbon as much as possible. . The size of the electric double layer capacitor can be reduced by 25% as compared with the case where the single cell is stacked by the bipolar electrode.
【図1】本願発明の実施の形態に係る電気二重層キャパ
シタを概念的に示す説明図である。FIG. 1 is an explanatory diagram conceptually showing an electric double layer capacitor according to an embodiment of the present invention.
【図2】スクリーンメッシュを用いたカーボンペースト
の塗布状態を示す図で、(a)は斜視図、(b)は縦断
面図である。FIGS. 2A and 2B are diagrams showing a state of application of a carbon paste using a screen mesh, wherein FIG. 2A is a perspective view and FIG. 2B is a longitudinal sectional view.
【図3】カーボンペースト塗布量と電気二重層キャパシ
タの静電容量との関係を示す特性図(活性炭繊維布の場
合)である。FIG. 3 is a characteristic diagram showing the relationship between the amount of carbon paste applied and the capacitance of an electric double layer capacitor (in the case of activated carbon fiber cloth).
【図4】カーボンペースト塗布量と電気二重層キャパシ
タの静電容量との関係を示す特性図(活性炭シートの場
合)である。FIG. 4 is a characteristic diagram (in the case of an activated carbon sheet) showing the relationship between the applied amount of carbon paste and the capacitance of an electric double layer capacitor.
【図5】本願発明の他の実施の形態に係る電気二重層キ
ャパシタを概念的に示す説明図である。FIG. 5 is an explanatory view conceptually showing an electric double layer capacitor according to another embodiment of the present invention.
1 集電極 2 活性炭電極 3 ゲル電解質 5 スクリーンメッシュ 6 カーボンペースト Reference Signs List 1 collector electrode 2 activated carbon electrode 3 gel electrolyte 5 screen mesh 6 carbon paste
Claims (4)
ボンシートを用いた集電極上にスクリーンメッシュを用
いてカーボンペースト、銀ペースト等の導電性接着剤を
塗布して活性炭繊維布又は活性炭シートを接着して作製
したことを特徴とする電極。1. An activated carbon fiber cloth or an activated carbon sheet is coated on a collector using a metal such as aluminum, copper, nickel or the like or a carbon sheet by applying a conductive adhesive such as a carbon paste or a silver paste using a screen mesh. An electrode characterized by being formed by bonding.
に、有機溶液系のゲル電解質を支持電解質としたことを
特徴とする電気二重層キャパシタ。2. An electric double-layer capacitor using the electrode prepared in claim 1 and using a gel electrolyte of an organic solution as a supporting electrolyte.
ボンシートを用いた集電極の一方の面上にスクリーンメ
ッシュを用いてカーボンペースト、銀ペースト等の導電
性接着剤を塗布して活性炭繊維布又は活性炭シートを接
着するとともに、集電極の他方の面上にも同様の方法で
同様の活性炭繊維布又は活性炭シートを接着して作製し
たことを特徴とする電極。3. An activated carbon fiber cloth by applying a conductive adhesive such as a carbon paste or a silver paste on one surface of a collector using a metal such as aluminum, copper, nickel or the like or a carbon sheet using a screen mesh. Alternatively, an electrode is produced by bonding an activated carbon sheet and bonding the same activated carbon fiber cloth or activated carbon sheet on the other surface of the collector by the same method.
に、有機溶液系の複数個のゲル電解質を支持電解質とし
たことを特徴とする電気二重層キャパシタ。4. An electric double-layer capacitor using the electrode prepared in claim 3 and using a plurality of organic solution-based gel electrolytes as supporting electrolytes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054777A JPH11251200A (en) | 1998-03-06 | 1998-03-06 | Electrode and electric double layer capacitor using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10054777A JPH11251200A (en) | 1998-03-06 | 1998-03-06 | Electrode and electric double layer capacitor using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11251200A true JPH11251200A (en) | 1999-09-17 |
Family
ID=12980212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10054777A Pending JPH11251200A (en) | 1998-03-06 | 1998-03-06 | Electrode and electric double layer capacitor using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11251200A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003532277A (en) * | 1999-12-06 | 2003-10-28 | エイブイエックス コーポレイション | Ultra-thin electrochemical energy storage device |
| CN105340115A (en) * | 2013-04-18 | 2016-02-17 | 诺基亚技术有限公司 | Method and device for energy storage |
-
1998
- 1998-03-06 JP JP10054777A patent/JPH11251200A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003532277A (en) * | 1999-12-06 | 2003-10-28 | エイブイエックス コーポレイション | Ultra-thin electrochemical energy storage device |
| CN105340115A (en) * | 2013-04-18 | 2016-02-17 | 诺基亚技术有限公司 | Method and device for energy storage |
| EP2987193A4 (en) * | 2013-04-18 | 2016-12-21 | Nokia Technologies Oy | Method and apparatus for energy storage |
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