JPH05326330A - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH05326330A JPH05326330A JP4151496A JP15149692A JPH05326330A JP H05326330 A JPH05326330 A JP H05326330A JP 4151496 A JP4151496 A JP 4151496A JP 15149692 A JP15149692 A JP 15149692A JP H05326330 A JPH05326330 A JP H05326330A
- Authority
- JP
- Japan
- Prior art keywords
- lead
- electric double
- sulfuric acid
- double layer
- layer capacitor
- 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
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
Abstract
Description
【０００１】[0001]
【産業の利用分野】本発明は鉛または鉛合金を集電体と
し、大型の電気二重層コンデンサーに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized electric double layer capacitor having lead or lead alloy as a current collector.
【０００２】[0002]
【従来の技術】従来の電気二重層コンデンサーは、１Ｆ
以下の小型のものが大部分であった。したがって分極性
電極も直径が３０ｍｍ、厚みが１ｍｍ以下であった。集
電体も硫酸を電解液にする場合には、導電ゴムが使われ
ている。導電ゴムの電気抵抗は約１Ω・ｃｍで金属と比
べると４桁〜６桁も大きいため、形状的にも制約をう
け、主として薄いフィルムであった。このため集電体は
大型の電気二重層コンデンサーの開発のネックになって
いた。硫酸に耐える安価な金属である鉛は、表面に薄い
絶縁膜ができるためか、内部抵抗が大きくなり電気二重
層コンデンサ−の集電体としては使用できなかった。2. Description of the Related Art A conventional electric double layer capacitor is 1F
The following small items were the majority. Therefore, the polarizable electrode also had a diameter of 30 mm and a thickness of 1 mm or less. A conductive rubber is also used as the current collector when sulfuric acid is used as the electrolytic solution. The electric resistance of the conductive rubber was about 1 Ω · cm, which was 4 to 6 orders of magnitude higher than that of metal. Therefore, the shape of the conductive rubber was restricted and the film was mainly a thin film. For this reason, the current collector has been a bottleneck in the development of large electric double layer capacitors. Lead, which is an inexpensive metal that withstands sulfuric acid, cannot be used as a current collector of an electric double layer capacitor, probably because a thin insulating film is formed on the surface thereof and the internal resistance increases.
【０００３】図３は従来の電気二重層コンデンサーの１
例を示す断面図である。（１０１）は導電ゴムフィルム
からなる集電体である。（１０２）はガスケットで、
（１０３）は活性炭−硫酸混練体である。（１０４）は
セパレータである。FIG. 3 shows one of conventional electric double layer capacitors.
It is sectional drawing which shows an example. (101) is a current collector made of a conductive rubber film. (102) is a gasket,
(103) is an activated carbon-sulfuric acid kneaded material. (104) is a separator.
【０００４】[0004]
【発明が解決しようとする課題】従来は集電体に変形し
やすい導電ゴムフィルムを使用していたため、分極性電
極が変形し大型電気二重層コンデンサー（たとえば１０
００Ｆ）を作ることは困難であった。Conventionally, since a conductive rubber film which is easily deformed is used for the current collector, the polarizable electrode is deformed and a large electric double layer capacitor (for example, 10) is used.
It was difficult to make 00F).
【０００５】本発明は安価な金属である鉛あるいは鉛合
金を硫酸電解液の電気二重層コンデンサーの集電体にし
ようとするものである。The present invention is intended to use lead or lead alloy, which is an inexpensive metal, as a current collector of an electric double layer capacitor of sulfuric acid electrolyte.
【０００６】[0006]
【課題を解決するための手段】本発明は変形のない鉛ま
たは鉛合金を分極性電極と接触する集電体にするもので
ある。硫酸を電解液とする電気二重層コンデンサーで
は、鉛または鉛合金は硫酸中では表面に薄い絶縁膜がで
きて内部抵抗の大きい電気二重層コンデンサーとなる。
これを防ぐため鉛または鉛合金の表面に、メッキ、プラ
ズマ、真空蒸着などの方法で厚さが５０μ以下の薄い
銀、金、白金、タンタル、ニオブなどの金属層を形成さ
せるものである。SUMMARY OF THE INVENTION The present invention provides an undeformed lead or lead alloy as a current collector in contact with a polarizable electrode. In an electric double layer capacitor that uses sulfuric acid as an electrolytic solution, lead or a lead alloy forms a thin insulating film on the surface in sulfuric acid and becomes an electric double layer capacitor with a large internal resistance.
In order to prevent this, a thin metal layer such as silver, gold, platinum, tantalum or niobium having a thickness of 50 μm or less is formed on the surface of lead or lead alloy by a method such as plating, plasma or vacuum deposition.
【０００７】[0007]
【作用】銀、金、白金、タンタル、ニオブなどは硫酸を
電解液とする電気二重層コンデンサーの分極性電極と接
触しても絶縁膜などはできず、これを鉛または鉛合金の
上に形成すれば鉛または鉛合金を電気二重層コンデンサ
ーの集電体とすることができる。[Function] Silver, gold, platinum, tantalum, niobium, etc. cannot form an insulating film even if they contact the polarizable electrode of an electric double layer capacitor using sulfuric acid as an electrolytic solution, and they are formed on lead or lead alloy. Then, lead or lead alloy can be used as a current collector of the electric double layer capacitor.
【０００８】銀などの金属層を表面に形成した鉛は導電
ゴムと違って剛体であり変形することがないので、大型
の集電体を製作することが可能である。鉛の電気抵抗は
２０μΩ・ｃｍであり、導電ゴムの電気抵抗（約１Ω・
ｃｍ）に比べて、はるかに小さいので電気二重層コンデ
ンサーは大型にしても内部抵抗が小さい。Unlike conductive rubber, lead having a metal layer of silver or the like formed on its surface is a rigid body and is not deformed, so that a large current collector can be manufactured. The electrical resistance of lead is 20 μΩ · cm, and the electrical resistance of conductive rubber (about 1Ω · cm
(cm), the electric double layer capacitor has a small internal resistance even if it is large.
【０００９】[0009]
【実施例】本発明の実施例について図１および図２で説
明する。（１）は集電体付きの分極性電極である。
（２）は格子状で、５μの厚みの銀メッキを施した鉛か
らなる集電体である。集電体の形状は格子状以外にエキ
スパンド状あるいは穴開けした平板などが可能である。
（３）は分極性電極であって、活性炭−硫酸混練体が集
電体の格子内に充填される。活性炭−硫酸混練体には必
要に応じて、導電剤としてカーボンブラックなどを混入
してもよく、結着剤としてフッソ樹脂などを使用しても
良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. (1) is a polarizable electrode with a current collector.
(2) is a grid-shaped current collector made of lead plated with silver having a thickness of 5 μm. The shape of the current collector may be an expanded shape or a perforated flat plate other than the grid shape.
(3) is a polarizable electrode, and the activated carbon-sulfuric acid kneaded material is filled in the grid of the current collector. If necessary, carbon black or the like may be mixed in the activated carbon-sulfuric acid kneaded material as a conductive agent, and a fluorine resin or the like may be used as a binder.
【００１０】（４）は他の集電体付きの分極性電極と接
続する鉛突出部である。（５）は分極性電極同志を接続
する鉛からなる接続片である。（６）はセパレータであ
る。（７）はセル間を隔離する隔壁であって電気二重層
コンデンサーのケース（８）と一体になっている。
（９）はセルで、各セルには必要に応じて注液口および
安全栓を設けてもよい。(4) is a lead projection connected to another polarizable electrode with a current collector. (5) is a lead connecting piece that connects the polarizable electrodes to each other. (6) is a separator. (7) is a partition that separates the cells, and is integrated with the case (8) of the electric double layer capacitor.
(9) is a cell, and each cell may be provided with a liquid injection port and a safety stopper as needed.
【００１１】[0011]
【発明の効果】本発明は分極性電極の集電体に安価な鉛
あるいは鉛合金を使用し、鉛あるいは鉛合金の表面に活
性炭−硫酸混練体と接しても接触抵抗の小さな銀、金、
白金、タンタル、ニオブなどの金属層を形成させるた
め、大型で内部抵抗の小さな電気二重層コンデンサーを
安価に提供することができる。１０００Ｆの電気二重層
コンデンサーを鉛の集電体で製作したものの内部抵抗は
０．１１３Ωであったのに対し、本発明になる銀などの
金属層を表面に形成させた鉛の集電体で製作したものの
内部抵抗は０．０２３Ωであった。電極同志の接続に鉛
を使用するので接続工程が簡単となり、しかも接続間の
抵抗は小さい。INDUSTRIAL APPLICABILITY The present invention uses inexpensive lead or a lead alloy for the collector of the polarizable electrode, and the surface of the lead or the lead alloy has a small contact resistance even when contacted with the activated carbon-sulfuric acid kneaded material, silver, gold,
Since a metal layer of platinum, tantalum, niobium, or the like is formed, a large-sized electric double layer capacitor having a low internal resistance can be provided at low cost. The internal resistance of a 1000 F electric double-layer capacitor manufactured with a lead current collector was 0.113 Ω, whereas the lead current collector according to the present invention formed with a metal layer such as silver on the surface. The manufactured product had an internal resistance of 0.023Ω. Since lead is used to connect the electrodes to each other, the connection process is simplified and the resistance between the connections is small.
【図１】本発明の１実施例を示す集電体付きの分極性電
極の平面図。FIG. 1 is a plan view of a polarizable electrode with a current collector showing an embodiment of the present invention.
【図２】本発明になる集電体付きの分極性電極を用いた
電気二重層コンデンサーの断面図。FIG. 2 is a sectional view of an electric double layer capacitor using a polarizable electrode with a current collector according to the present invention.
【図３】従来の電気二重層コンデンサーの集電体付きの
分極性電極を示す図である。FIG. 3 is a diagram showing a polarizable electrode with a current collector of a conventional electric double layer capacitor.
１ 集電体付きの分極性電極 ２ 集電体 ３ 活性炭−硫酸混練体 1 Polarizable electrode with current collector 2 Current collector 3 Activated carbon-sulfuric acid kneaded material
Claims (1)
金属層を有する鉛あるいは鉛合金であり、 該金属層は、電解液中で活性炭との接触抵抗の小さい金
属よりなり、 電解液は硫酸を主成分とする溶液であることを特徴とす
る電気二重層コンデンサー。1. A current collector in contact with a polarizable electrode is lead or a lead alloy having a thin metal layer on the surface, the metal layer being made of a metal having a small contact resistance with activated carbon in an electrolytic solution. The electric double layer capacitor is characterized in that the liquid is a solution containing sulfuric acid as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4151496A JPH05326330A (en) | 1992-05-18 | 1992-05-18 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4151496A JPH05326330A (en) | 1992-05-18 | 1992-05-18 | Electric double layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05326330A true JPH05326330A (en) | 1993-12-10 |
Family
ID=15519776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4151496A Pending JPH05326330A (en) | 1992-05-18 | 1992-05-18 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05326330A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1064759A (en) * | 1996-08-26 | 1998-03-06 | Toyota Motor Corp | Electric double layer capacitor |
| US7580243B2 (en) * | 2006-07-14 | 2009-08-25 | Maxwell Technologies, Inc. | Method of making and article of manufacture for an ultracapacitor electrode apparatus |
| JP2011009128A (en) * | 2009-06-29 | 2011-01-13 | Gs Yuasa Corp | Capacitor hybrid lead-acid battery and its manufacturing method |
| JP2013165267A (en) * | 2012-01-20 | 2013-08-22 | Korea Advanced Inst Of Sci Technol | Film-type supercapacitor and manufacturing method thereof |
-
1992
- 1992-05-18 JP JP4151496A patent/JPH05326330A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1064759A (en) * | 1996-08-26 | 1998-03-06 | Toyota Motor Corp | Electric double layer capacitor |
| US7580243B2 (en) * | 2006-07-14 | 2009-08-25 | Maxwell Technologies, Inc. | Method of making and article of manufacture for an ultracapacitor electrode apparatus |
| JP2011009128A (en) * | 2009-06-29 | 2011-01-13 | Gs Yuasa Corp | Capacitor hybrid lead-acid battery and its manufacturing method |
| JP2013165267A (en) * | 2012-01-20 | 2013-08-22 | Korea Advanced Inst Of Sci Technol | Film-type supercapacitor and manufacturing method thereof |
| US8951306B2 (en) | 2012-01-20 | 2015-02-10 | Korea Advanced Institute Of Science And Technology | Film-type supercapacitor and manufacturing method thereof |
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