JPH01136326A - Double-layer electric capacitor - Google Patents
Double-layer electric capacitorInfo
- Publication number
- JPH01136326A JPH01136326A JP62295713A JP29571387A JPH01136326A JP H01136326 A JPH01136326 A JP H01136326A JP 62295713 A JP62295713 A JP 62295713A JP 29571387 A JP29571387 A JP 29571387A JP H01136326 A JPH01136326 A JP H01136326A
- Authority
- JP
- Japan
- Prior art keywords
- carbon
- current collector
- intermediate layer
- oil absorption
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 17
- 238000010521 absorption reaction Methods 0.000 claims abstract description 11
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 239000004809 Teflon Substances 0.000 abstract description 5
- 229920006362 Teflon® Polymers 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- -1 polypropylene Polymers 0.000 abstract description 2
- 229920001155 polypropylene Polymers 0.000 abstract description 2
- 239000006229 carbon black Substances 0.000 abstract 1
- 239000003273 ketjen black Substances 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 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） 本発明は電気二重層コンデンサに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an electric double layer capacitor.
（従来の技術）
従来、電気二重層コンデンサは、分極性電極、セパレー
タ及びｆｅｅ Ｎ体からなるコンデンサ素子をケースに
収納した１３３ｉになっている。(Prior Art) Conventionally, an electric double layer capacitor is a 133i type in which a capacitor element consisting of a polarizable electrode, a separator, and a fee N body is housed in a case.
分極性電極は活性炭、活性炭ａ維または導電性カーボン
ブラックなどのカーボンを主成分として形成されている
。そしてこの分極性電極に接触するｔｅＴｉ体としては
金属系のエキスバンドメタルやエツチング箔又は溶射金
属等を用いている。The polarizable electrode is formed mainly of carbon such as activated carbon, activated carbon a fibers, or conductive carbon black. The teTi body in contact with the polarizable electrode is made of expanded metal, etched foil, sprayed metal, or the like.
（発明が解決しようとする問題点）
しかし、集電体のこれらの材質は金属であるために分極
性電極との接触抵抗が変化し易い欠点があった。(Problems to be Solved by the Invention) However, since these materials of the current collector are metal, there is a drawback that the contact resistance with the polarizable electrode easily changes.
本発明の目的は、以上の欠点を改良し、分極性電極と集
電体との接触抵抗を安定化しつる電気二重層コンデンサ
を提供するものである。An object of the present invention is to provide an electric double layer capacitor which improves the above-mentioned drawbacks and stabilizes the contact resistance between the polarizable electrode and the current collector.
（問題点を解決するための手段）
本発明は、上記の目的を達成するために、分極性電極、
セパレータ及び集電体からなるコンデンサ素子をケース
に収納した電気二重層コンデンサにおいて、分極性電極
と集電体とを吸油量の大きなカーボンを主成分とする中
間層をＶＡ層することを特徴とする電気二重層コンデン
サを提供するものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides polarizable electrodes,
An electric double layer capacitor in which a capacitor element consisting of a separator and a current collector is housed in a case, characterized in that the polarizable electrode and the current collector are interposed as a VA layer with an intermediate layer mainly composed of carbon having a large oil absorption capacity. The present invention provides an electric double layer capacitor.
（作用）
本発明によれば、分極性電極と集電体との間に吸油量の
大きなカーボンを主成分とする層は導電性が大きく、電
解液を吸収して体積が膨潤し易く、分極性電極と集電体
との接触が安定し、また液漏れも低減できる。(Function) According to the present invention, the layer between the polarizable electrode and the current collector, whose main component is carbon with a large oil absorption, has high conductivity and easily swells in volume by absorbing the electrolytic solution. The contact between the polar electrode and the current collector is stabilized, and liquid leakage can also be reduced.
なお、カーボンの吸油量が２００Ｍ１／１０（１以上で
あれば、より効果的に接触抵抗を安定化できる。Note that if the oil absorption amount of carbon is 200M1/10 (1 or more), the contact resistance can be more effectively stabilized.
（実施例） 以下、本発明を実施例に基づ０て説明する。(Example) Hereinafter, the present invention will be explained based on examples.
第１図はボタン形の電気二重層コンデンサを示す。FIG. 1 shows a button-shaped electric double layer capacitor.
１は、分極性電極であり、活性炭に２０％の導電性カー
ボンブラックと１５％のテフロンを加え、混合してプレ
スし厚さ７００μｍのシートにし、直径１２ｆｌの円板
状に打ち抜いたものである。２は、分極性電極１を分離
しているセパレータであり、厚さ１００μ雇のポリプロ
ピレンからなる。1 is a polarizable electrode, which is made by adding 20% conductive carbon black and 15% Teflon to activated carbon, mixing and pressing it into a sheet with a thickness of 700 μm, which is punched out into a disk shape with a diameter of 12 fl. . A separator 2 separates the polarizable electrodes 1 and is made of polypropylene with a thickness of 100 μm.
３は、分極性電極１の表面に１ｉｌｉｉＩされたカーボ
ンからなる中間層であり、吸油量が４８０ｍｌ／１００
ｇ （ＤＢＰ法）のケッチエンブラックと１５％のテフ
ロンを混合しプレスして厚さ１５０μ乳のシートにし直
径１３ｍの円形状に打ち抜いたものである。４は金属製
のケースであり、内面にカーボンペイントからなる集電
体５が形成されている。3 is an intermediate layer made of carbon coated on the surface of the polarizable electrode 1, and has an oil absorption amount of 480 ml/100
15% Teflon was mixed and pressed to form a sheet with a thickness of 150μ and punched into a circular shape with a diameter of 13m. 4 is a metal case, and a current collector 5 made of carbon paint is formed on the inner surface.
カーボンの中間１！１３は集電体５に塗布され加熱乾燥
されて形成される。６はケース４のカシメ部７に介在さ
れたパツキンである。The carbon intermediate layer 1!13 is formed by coating the current collector 5 and heating and drying it. 6 is a gasket interposed in the caulking portion 7 of the case 4.
また、第２図は本発明の他の実施例を示し、巻回形のコ
ンデンサ素子８を用いたものである。分極性電極は、粒
子径１６μｍ、吸油ｆｆ１２００ｍｌ／１００９ （Ｄ
ＢＰ法）の導電性カーボンブラックと１５％のテフロン
を加え混合してプレスし、厚さ３００μｍのシートを形
成したものである。Further, FIG. 2 shows another embodiment of the present invention, in which a wound type capacitor element 8 is used. The polarizable electrode has a particle size of 16 μm and an oil absorption ff of 1200 ml/1009 (D
BP method) conductive carbon black and 15% Teflon were added and mixed and pressed to form a sheet with a thickness of 300 μm.
そら突出するように重ね合わせて巻回したものである。They are wound so that they overlap one another so that they stick out.
１３はコンデンサ素子８の両端面に積層されたカーボン
の中間層であり、第１図の実施例と同じ成分からなる。A carbon intermediate layer 13 is laminated on both end faces of the capacitor element 8, and is made of the same components as in the embodiment shown in FIG.
１４は円筒状のケースであり、底部１５内面に集電体１
６としてカーボンペイントが塗布されている。１７は、
ケース１４の蓋１８を貫通している端子であり、ケース
１４内の端部１９が円板状に形成され、カーボンペイン
トが集電体２０として塗布されている。２１はケース１
４の底部１５に接続された端子である。14 is a cylindrical case, and a current collector 1 is provided on the inner surface of the bottom part 15.
6, carbon paint is applied. 17 is
The terminal penetrates through the lid 18 of the case 14, and the end 19 inside the case 14 is formed into a disk shape, and carbon paint is applied as a current collector 20. 21 is case 1
This terminal is connected to the bottom part 15 of 4.
次に、本発明の実施例と比較例について、初期ＥＳＲの
バラツキが１０％以内の個数と、温度６０℃、湿度９０
％の雰囲気中に２０００Ｈｒ放置後のＥＳＲの上昇率の
平均を測定したところ表の通りの結果が得られた。Next, regarding the example of the present invention and the comparative example, the number of pieces with initial ESR variation within 10%, the temperature of 60 ° C., and the humidity of 90 ° C.
When the average rate of increase in ESR was measured after being left in an atmosphere of 2,000 hours, the results shown in the table were obtained.
実施例１は第１図に示したボタン形のもの、実施例２は
第２図に示した巻回形のもの、実施例３は実施例１にお
いてカーボンの吸油量を２００ｍｌ／１００９としたも
の、
比較例１は実施例１において中間層を除去したもの、
比較例２は実施例２において中間層を除去したもの、
比較例３は実施例１においてカーボンの吸油量を１５０
ｍｌ／１００ｇとしたもの、
とする。Example 1 is the button type shown in Figure 1, Example 2 is the rolled type shown in Figure 2, and Example 3 is the same as Example 1, with the carbon oil absorption being 200ml/1009. , Comparative Example 1 is the same as Example 1 with the intermediate layer removed, Comparative Example 2 is the same as Example 2 with the intermediate layer removed, Comparative Example 3 is the same as Example 1 but with the carbon oil absorption 150%.
ml/100g.
また、試料数は各々１００ケとする。Moreover, the number of samples is 100 for each.
表
表から明らかな通り、ＥＳＲのバラツキの１０％以内の
個数については本願発明の方が比較例よりも多く、上昇
率については前者の方がより低くおさえられている。As is clear from the table, the number of samples within 10% of the ESR variation is higher in the present invention than in the comparative example, and the rate of increase is kept lower in the former.
（発明の効果）
以上の通り、本発明によれば、分極性電極と集電体との
間に吸油量の大きなカーボンを主成分とする中間層を設
けているため、接触抵抗を安定化でき、ＥＳＲを改良で
き、また液漏れも低減しつる電気二重層コンデンサが得
られる。(Effects of the Invention) As described above, according to the present invention, since the intermediate layer mainly composed of carbon having a large oil absorption is provided between the polarizable electrode and the current collector, the contact resistance can be stabilized. , an electric double layer capacitor with improved ESR and reduced leakage can be obtained.
【図面の簡単な説明】
第１図は本発明実施例の断面図、第２図は本発明の他実
施例の断面図、第３図は第２図の実施例に用いられるコ
ンデンサ素子の断面図を示す。
１．９・・・分極性電極、 ２，１２・・・セパレータ
、３．１３・・・中間層、 ４．１４・・・ケース、５
．１６．２０・・・集電体、
８・・・コンデンサ素子。
特許出願人 日立コンデンサ株式会社
第１図
第２図[Brief Description of the Drawings] Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is a sectional view of another embodiment of the invention, and Fig. 3 is a sectional view of a capacitor element used in the embodiment of Fig. 2. Show the diagram. 1.9...Polarizable electrode, 2,12...Separator, 3.13...Intermediate layer, 4.14...Case, 5
．． 16.20... Current collector, 8... Capacitor element. Patent applicant: Hitachi Capacitor Co., Ltd. Figure 1 Figure 2
Claims (2)
デンサ素子をケースに収納した電気二重層コンデンサに
おいて、分極性電極と集電体との間に吸油量の大きなカ
ーボンを主成分とする中間層を積層することを特徴とす
る電気二重層コンデンサ。(1) In an electric double layer capacitor in which a capacitor element consisting of a polarizable electrode, a separator, and a current collector is housed in a case, an intermediate layer mainly composed of carbon with a large oil absorption capacity is placed between the polarizable electrode and the current collector. An electric double layer capacitor characterized by laminating.
Ｐ法）以上の導電性カーボンブラックである特許請求の
範囲第１項記載の電気二重層コンデンサ。(2) The oil absorption amount of carbon is 200ml/100g (DB
The electric double layer capacitor according to claim 1, which is a conductive carbon black according to Method P) or above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295713A JP2620794B2 (en) | 1987-11-24 | 1987-11-24 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62295713A JP2620794B2 (en) | 1987-11-24 | 1987-11-24 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01136326A true JPH01136326A (en) | 1989-05-29 |
| JP2620794B2 JP2620794B2 (en) | 1997-06-18 |
Family
ID=17824193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62295713A Expired - Lifetime JP2620794B2 (en) | 1987-11-24 | 1987-11-24 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2620794B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154106A (en) * | 1990-10-18 | 1992-05-27 | Asahi Glass Co Ltd | Electric double layer capacitor |
-
1987
- 1987-11-24 JP JP62295713A patent/JP2620794B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04154106A (en) * | 1990-10-18 | 1992-05-27 | Asahi Glass Co Ltd | Electric double layer capacitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2620794B2 (en) | 1997-06-18 |
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