JPH0383317A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH0383317A JPH0383317A JP1219326A JP21932689A JPH0383317A JP H0383317 A JPH0383317 A JP H0383317A JP 1219326 A JP1219326 A JP 1219326A JP 21932689 A JP21932689 A JP 21932689A JP H0383317 A JPH0383317 A JP H0383317A
- Authority
- JP
- Japan
- Prior art keywords
- plate
- solid
- polarizing electrodes
- current collector
- polarizable electrode
- 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 13
- 230000007797 corrosion Effects 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 abstract description 13
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 230000015556 catabolic process Effects 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000005245 sintering Methods 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
本発明は、集電体の機械的強度を大にした電気二重層コ
ンデンサに関するものである。The present invention relates to an electric double layer capacitor in which the mechanical strength of the current collector is increased.
第３図に、従来の電気二重層コンデンサを示す。
第３図において、１．２は集電体、３．４はガスケット
、５はセパレータ、６，７はペースト状分極性′Ｗｊ、
ｐｉである。
集電体１．２としては導電性のゴムシートが用いられ、
ガスケット３．４としては絶縁性のゴムが用いられる。
ペースト状分極性電極６，７は、活性炭粉末に希ｇ酸を
含浸させてペースト状にしたものである。セパレータ５
には、イオン不透性の導電性プラスチックフィルムが用
いられる。
活性炭粒子同士の接触を良くしたり、集電体１とペース
ト状分極性電極６．および集電体２とペースト状分極性
電極７との接触を良くするため、集電体１．２の上から
圧力が加えられる。
しかし、分極性電極がペースト状になっていると、製造
時に扱い難いと共に、充填した後時間が経過すると、ど
ちらかに片寄ったり、２つ以上の塊に分かれたりして、
電気的特性を安定に維持することが出来ないという欠点
があった。
そこで、分極性電極を、焼結して固形の板状にすること
が提案されている（例、特開昭６２−２９２６１２号公
報）、第４図の８は、固形板状の分極性電極を示してい
る。
固形板状にすれば、かさ密度が高まるので容量が大にな
ると共に、活性炭粒子同士の接触も密に行われ、接触抵
抗が減少するという利点もある。FIG. 3 shows a conventional electric double layer capacitor. In Fig. 3, 1.2 is a current collector, 3.4 is a gasket, 5 is a separator, 6 and 7 are paste polarizability 'Wj,
It is pi. A conductive rubber sheet is used as the current collector 1.2,
Insulating rubber is used as the gasket 3.4. The paste-like polarizable electrodes 6 and 7 are made into a paste by impregnating activated carbon powder with dilute g-acid. Separator 5
An ion-impermeable conductive plastic film is used. To improve the contact between the activated carbon particles, the current collector 1 and the paste-like polarizable electrode 6. In order to improve the contact between the current collector 2 and the pasty polarizable electrode 7, pressure is applied from above the current collector 1.2. However, if the polarizable electrode is in the form of a paste, it is difficult to handle during manufacturing, and after some time has passed after being filled, it tends to shift to one side or separate into two or more lumps.
There was a drawback that the electrical characteristics could not be maintained stably. Therefore, it has been proposed to sinter the polarizable electrode into a solid plate shape (for example, Japanese Patent Application Laid-Open No. 62-292612). It shows. If it is made into a solid plate, the bulk density will increase, so the capacity will increase, and the activated carbon particles will come into close contact with each other, which has the advantage of reducing contact resistance.
（問題点）
しかしながら、固形板状分極性電極を用いている電気二
重層コンデンサには、固形板状分極性電極が割れたり、
欠けたりし易いという問題点があった。
（問題点の説明）
固形板状分極性電極は、活性炭を薄く板状に焼結しただ
けであるので、もともと機械的強度があまりない、しか
し、固形板状分極性電極と集電体との電気的接触を良く
するために、集電体の上から押圧力をかけなければなら
ない。ところが、従来の集電体は導電性ゴムで作られて
いて剛性を持たないので、局部的に強い力がかかってし
まうことがある。そのような場合、固形板状分極性電極
は、割れたり欠けたりする。
このようなことは、電気二重層コンデンサを大型にして
、固形板状分極性電極の表面積が大になればなるほど顕
著になる。
固形板状分極性電極自身の機械的強度を大にするため、
金属とか高分子材料等のバインダーを用いることも考え
られるが、そうすると、分極性電極としての電気的特性
が低下してしまい、好ましくない。
本発明は、以上のような問題点を解決することを課題と
するものである。(Problems) However, in electric double layer capacitors that use solid plate-like polarizable electrodes, the solid plate-like polarizable electrodes may crack or
There was a problem that it was easy to chip. (Explanation of the problem) Solid plate-like polarizable electrodes are simply sintered activated carbon into a thin plate shape, so they originally do not have much mechanical strength. In order to make good electrical contact, a pressing force must be applied from above the current collector. However, since conventional current collectors are made of conductive rubber and do not have rigidity, strong local forces may be applied to them. In such cases, the solid plate-like polarizable electrode will crack or chip. This problem becomes more noticeable as the electric double layer capacitor becomes larger and the surface area of the solid plate-like polarizable electrode becomes larger. In order to increase the mechanical strength of the solid plate-like polarizable electrode itself,
Although it is conceivable to use a binder such as a metal or a polymeric material, this is not preferable because the electrical properties of the polarizable electrode deteriorate. An object of the present invention is to solve the above-mentioned problems.
前記課題を解決するため、本発明の電気二重層コンデン
サでは、分極性電極に固形板状分極性電極を用い、集電
体に分極性電極と接する表面が耐腐食性とされている導
電性剛体を用いることとした。In order to solve the above problems, in the electric double layer capacitor of the present invention, a solid plate-like polarizable electrode is used as the polarizable electrode, and a conductive rigid body whose surface in contact with the polarizable electrode is made corrosion-resistant is used as the current collector. We decided to use
集電体が剛体とされているので、
電気的接触を
良くするため固形板状分極性電極に押し当てる場合、押
圧力が均一にかかり、局部的に強くかかるということが
なくなる。そのため、固形板状分極性電極を割ったりす
ることがなくなる。
また、集電体の分極性電極と接する表面は耐腐食性とさ
れているので、固形板状分極性電極が含浸している電解
液に腐食されることもない。Since the current collector is a rigid body, when it is pressed against a solid plate-like polarizable electrode to improve electrical contact, the pressing force is applied uniformly and there is no need to apply strong pressure locally. Therefore, the solid plate-like polarizable electrode will not be broken. Furthermore, since the surface of the current collector that is in contact with the polarizable electrode is made corrosion resistant, the solid plate-like polarizable electrode is not corroded by the electrolyte in which it is impregnated.
以下、本発明の実施例を図面に基づいて詳細に説明する
。
第１図に、本発明の第１の実施例にかかわる電気二重層
コンデンサを示す、符号は、第３図に対応している。そ
して、６１．７１は粒状活性炭を焼結して希硫酸等の電
解液を含浸させた固形板状分極性電極、９．１０は金属
板、１１．１２は金属板にコーティングした導電性樹脂
である。
金属板９と導電性樹脂１１とで一方の集電体を形成し、
金属板１０と導電性相ａｉ２とで他方の集電体を形成し
ている。これらの集電体は、金属板９．１０により剛性
が与えられているので、固形板状分極性型Ｆｉ６１．７
１との接触を良くするため押圧力が加えられた時、固形
板状分極性電極６１．７１に対して局部的に強い力を伝
えることがない、そのため、固形板状分極性電極６１，
７１を割ったりすることがない。
導電性樹脂１１．１２は、固形板状分極性電極６１．７
１に含浸されている電解液により金属板９．１０が腐食
されるのを防止するために、分極性電極と接する面にコ
ーティングされる。
第２図は、本発明の第２の実施例にかかわる電気二重層
コンデンサである。符号は第１図に対応している。そし
て１．１３．１４は剛性を有する導電性樹脂である。
この例では、集電体の材料として、剛性を有する導電性
樹脂だけを用いたものである。樹脂であるから、あらた
めて表面に耐腐食性の材料をコーティングする必要はな
い。
この他、集電体としては、カーボン繊維やカーボン補強
カーボン繊維を、剛性を有する板状にしたものを用いる
ことが出来る。要するに、少なくとも分極性電極と接す
る表面が耐腐食性を有する導電性剛体で構成することが
出来る。Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows an electric double layer capacitor according to a first embodiment of the present invention, and the symbols correspond to those in FIG. 3. 61.71 is a solid plate-like polarizable electrode made by sintering granular activated carbon and impregnated with an electrolyte such as dilute sulfuric acid, 9.10 is a metal plate, and 11.12 is a conductive resin coated on a metal plate. be. Forming one current collector with the metal plate 9 and the conductive resin 11,
The metal plate 10 and the conductive phase ai2 form the other current collector. Since these current collectors are given rigidity by the metal plate 9.10, they are solid plate-like polarizable type Fi61.7.
When a pressing force is applied to improve the contact with the solid plate-like polarizable electrodes 61, 71, no strong force is locally transmitted to the solid plate-like polarizable electrodes 61, 71.
I never break 71. The conductive resin 11.12 is a solid plate-like polarizable electrode 61.7
In order to prevent the metal plate 9.10 from being corroded by the electrolyte impregnated in the metal plate 1, the surface in contact with the polarizable electrode is coated. FIG. 2 shows an electric double layer capacitor according to a second embodiment of the present invention. The symbols correspond to those in FIG. 1.13.14 is a rigid conductive resin. In this example, only a rigid conductive resin is used as the material for the current collector. Since it is made of resin, there is no need to coat the surface with a corrosion-resistant material. In addition, as the current collector, a rigid plate made of carbon fiber or carbon-reinforced carbon fiber can be used. In short, at least the surface in contact with the polarizable electrode can be made of a conductive rigid body having corrosion resistance.
以上述べた如き本発明によれば、 集電体が剛体とされ
ているので、電気的接触を良くするため固形板状分極性
電極に押し当てた場合、押圧力が均一にかかり、局部的
に強くかかるということがなくなる。そのため、固形板
状分極性電極を割ったりすることがなくなる。According to the present invention as described above, since the current collector is a rigid body, when it is pressed against a solid plate-like polarizable electrode to improve electrical contact, the pressing force is applied uniformly and locally. There will be no need to apply force. Therefore, the solid plate-like polarizable electrode will not be broken.
第１図・・・本発明の第１の実施例にかかわる電気二重
層コンデンサ
第２図・・・本発明の第２の実施例にかかわる電気−重
層コンデンサ
第３図・・・従来の電気二重層コンデンサ第４図・・・
固形板状分極性電極を示す図図において、１，２は集電
体、３，４はガスケント、５はセパレータ、６．７はペ
ースト状分極性電極、８．６１．７１は固形板状分極性
電極、９．１０は金属板、１１．１２は金属板にコーテ
ィングした導電性樹脂、１３．１４は剛性を有する導電
性樹脂である。Fig. 1: An electric double layer capacitor according to a first embodiment of the present invention Fig. 2: An electric double layer capacitor according to a second embodiment of the present invention Fig. 3: A conventional electric double layer capacitor according to a second embodiment of the present invention Multilayer capacitor Figure 4...
In the diagram showing solid plate-like polarizable electrodes, 1 and 2 are current collectors, 3 and 4 are gaskets, 5 is a separator, 6.7 is a paste-like polarizable electrode, and 8.61.71 is a solid plate-like component. A polar electrode, 9.10 is a metal plate, 11.12 is a conductive resin coated on the metal plate, and 13.14 is a rigid conductive resin.
Claims (1)
極性電極と接する表面が耐腐食性とされている導電性剛
体を用いたことを特徴とする電気二重層コンデンサ。An electric double layer capacitor characterized in that a solid plate-like polarizable electrode is used as a polarizable electrode, and a conductive rigid body whose surface in contact with the polarizable electrode is corrosion-resistant is used as a current collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1219326A JPH0383317A (en) | 1989-08-26 | 1989-08-26 | Electric double-layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1219326A JPH0383317A (en) | 1989-08-26 | 1989-08-26 | Electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0383317A true JPH0383317A (en) | 1991-04-09 |
Family
ID=16733713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1219326A Pending JPH0383317A (en) | 1989-08-26 | 1989-08-26 | Electric double-layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0383317A (en) |
-
1989
- 1989-08-26 JP JP1219326A patent/JPH0383317A/en active Pending
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