JP2666848B2 - Carbon paste electrode - Google Patents
Carbon paste electrodeInfo
- Publication number
- JP2666848B2 JP2666848B2 JP63155483A JP15548388A JP2666848B2 JP 2666848 B2 JP2666848 B2 JP 2666848B2 JP 63155483 A JP63155483 A JP 63155483A JP 15548388 A JP15548388 A JP 15548388A JP 2666848 B2 JP2666848 B2 JP 2666848B2
- Authority
- JP
- Japan
- Prior art keywords
- electric double
- activated carbon
- layer capacitor
- paste electrode
- 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.)
- Expired - Lifetime
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
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、カーボンペースト電極に関し、特に電気二
重層コンデンサ用のカーボンペースト電極に関する。Description: TECHNICAL FIELD The present invention relates to a carbon paste electrode, and more particularly to a carbon paste electrode for an electric double layer capacitor.
一般にカーボンペースト電極を用いた電気二重層コン
デンサの素子（以下基本セルと称す）は、第４図に示す
ようにイオン透過性でかつ非電子伝導性の多孔性セパレ
ータ５を介して分離された一対の粉末活性炭と電解質溶
液から成るカーボンペースト電極3bと前記カーボンペー
スト電極3bを介して配置されたイオン不浸透性の導電性
セパレータ２と前記一対のカーボンペースト電極の周辺
部で前記導電性セパレータ２の間に介在するカーボンペ
ースト電極3bを保持し、かつ外界から遮断するために設
けられた非導電性ガスケット４よりなる構造を有する。
この基本セル1bの電極となるカーボンペースト電極3b
は、従来、粉末活性炭と電解質溶液とを混合したものと
なっていた。In general, an element of an electric double layer capacitor using a carbon paste electrode (hereinafter referred to as a basic cell) is composed of a pair of ion-permeable and non-electron-conductive porous separators 5 as shown in FIG. A carbon paste electrode 3b made of powdered activated carbon and an electrolyte solution, an ion-impermeable conductive separator 2 disposed via the carbon paste electrode 3b, and a conductive paste 2 around the pair of carbon paste electrodes. It has a structure composed of a non-conductive gasket 4 provided to hold the carbon paste electrode 3b interposed therebetween and to shield it from the outside.
A carbon paste electrode 3b serving as an electrode of the basic cell 1b
Conventionally, it has been a mixture of powdered activated carbon and an electrolyte solution.
さらに電気二重層コンデンサは第５図に示すように使
用電圧に応じて基本セル1bを必要枚数積層した積層体６
を、金属の外装ケース８と基本セル1bの測面が金属の外
装ケース８と短絡するのを防ぐための絶縁ケース７とで
ケーシング（電極板９を介して電極10を引き出す構造を
有する。Further, as shown in FIG. 5, the electric double layer capacitor has a laminated body 6 in which the required number of basic cells 1b are laminated according to the working voltage.
And a casing (the electrode 10 is drawn out via an electrode plate 9) by a metal outer case 8 and an insulating case 7 for preventing the measurement surface of the basic cell 1b from short-circuiting to the metal outer case 8.
電気二重層コンデンサの等価直列抵抗（以下ESRと称
す）は活性炭，導電性セパレータ，多孔性セパレータ等
の材料抵抗と活性炭粒子間，基本セル間等の接触抵抗よ
り構成される。The equivalent series resistance (hereinafter referred to as ESR) of an electric double layer capacitor is composed of the material resistance of activated carbon, conductive separator, porous separator, etc., and the contact resistance between activated carbon particles, basic cells, etc.
電気二重層コンデンサは前記の接触抵抗を減らすため
に基本セル1bの積層対６に上下から１〜100kg/cm2の圧
力を加え、これを保持した状態で外装ケース８の開口端
を内側に折り曲げてかしめ封口している。In order to reduce the contact resistance, the electric double layer capacitor applies a pressure of 1 to 100 kg / cm 2 to the stacked pair 6 of the basic cells 1b from above and below, and folds the open end of the outer case 8 inward while holding this. It is sealed.
上述した従来の電気二重層コンデンサは、粉末活性炭
の比抵抗が大きく、そのため電気二重層コンデンサのES
Rが大きい。このため充電後、大電流で放電する場合、
電気二重層コンデンサのESRにより不要な電圧降下を引
き起こすという欠点を有する。In the conventional electric double layer capacitor described above, the specific resistance of the powdered activated carbon is large, so that the electric double layer capacitor ES
R is large. Therefore, when discharging with a large current after charging,
There is a disadvantage that an unnecessary voltage drop is caused by the ESR of the electric double layer capacitor.
本発明は、粉末活性炭と電解質溶液との混合物を電極
とする電気二重層コンデンサ用カーボンペースト電極に
おいて前記粉末活性炭を熱処理したことと、熱処理の温
度を1000℃以上としたという特徴を有する。The present invention is characterized in that the powdered activated carbon is heat-treated at a carbon paste electrode for an electric double layer capacitor using a mixture of powdered activated carbon and an electrolyte solution as an electrode, and the temperature of the heat treatment is set to 1000 ° C. or higher.
次に本発明について第２図を参照して説明する。 Next, the present invention will be described with reference to FIG.
厚さ0.5mmの未加硫の非導電性ゴムシートを同心円上
に内径6.0mm,外径11.0mmで打抜きリング状シートとす
る。次に未加硫の導電性ゴムシートを直径11.0mmに打抜
き前述のリング状シートに同心円状に配置し、圧着して
凹部を形成する。この凹部に30重量％硫酸と従来の粉末
活性炭、800℃,1000℃,1300℃,1600℃でそれぞれ２時間
熱処理した粉末活性炭を混合したペースト電極3aを充填
して５水準のペースト充填シートを得る。An unvulcanized non-conductive rubber sheet having a thickness of 0.5 mm is punched into a ring-shaped sheet concentrically with an inner diameter of 6.0 mm and an outer diameter of 11.0 mm. Next, an unvulcanized conductive rubber sheet is punched to a diameter of 11.0 mm, placed concentrically on the above-mentioned ring-shaped sheet, and pressed to form a recess. The recess is filled with a paste electrode 3a containing a mixture of 30% by weight sulfuric acid and conventional powdered activated carbon, and powdered activated carbon heat-treated at 800 ° C., 1000 ° C., 1300 ° C., and 1600 ° C. for 2 hours each to obtain a paste filling sheet of five levels. .
次にこのペースト充填シートの一対をカーボンペース
ト電極3aが相対する方向でポリプロピレン製の厚さ25μ
m,直径8.0mmの多孔性セパレータ５を介して同心円上に
配置合体した後、4kg/cm2の圧力を上下方向より加え、
この圧力を保持した状態で125±５℃の温度雰囲気中に
３時間放置し、未加硫の非導電性ゴムシール間及び未加
硫の非導電性ゴムシートと未加硫の導電性ゴムシートの
間を密着して（本発明例の）基本セル1aを得た。Next, a pair of the paste-filled sheets is made of polypropylene having a thickness of 25 μm in a direction in which the carbon paste electrodes 3a face each other.
m, concentrically arranged through a porous separator 5 having a diameter of 8.0 mm, and then combined, and then applied a pressure of 4 kg / cm 2 from above and below,
While maintaining this pressure, it was left in an atmosphere at a temperature of 125 ± 5 ° C. for 3 hours, and the space between the unvulcanized non-conductive rubber seal and the unvulcanized non-conductive rubber sheet and the unvulcanized conductive rubber sheet was The gap was closely adhered to obtain a basic cell 1a (of the present invention).
次に第３図のように本発明の基本セル1aを８枚直列に
積層し、積層体６とした後、金属性外装ケース８に収納
し、積層体６上に電極板９を配置した絶縁ケース７を被
せ、電極板9,絶縁ケース７を介して積層体６に30kg/cm2
の機械的圧力を加え、この状態を保持したまま外装ケー
ス８の上端をかしめ封口して熱処理なし、800℃,1000
℃,1300℃,16000℃でそれぞれ２時間熱処理した粉末活
性炭を用いた動作電圧5Vの電気二重層コンデンサを５水
準得た。Next, as shown in FIG. 3, eight basic cells 1a of the present invention are laminated in series to form a laminate 6, which is then housed in a metallic outer case 8, and an electrode plate 9 is placed on the laminate 6 to form an insulation. The case 7 is covered, and the laminated body 6 is interposed between the electrode plate 9 and the insulating case 7 at 30 kg / cm 2.
With the mechanical pressure of 800 ° C. and 1000 ° C.
Five levels of 5 V electric double layer capacitors using powdered activated carbon heat-treated at 2 ° C., 1300 ° C., and 16000 ° C. for 2 hours were obtained.
第１図に粉末活性炭を熱処理した時の温度と電気二重
層コンデンサ40個のESRの平均値との関係を示した。第
１図の横軸は粉末活性炭を熱処理した時の温度である。
縦軸は、電気二重層コンデンサのESRである。粉末活性
炭の熱処理の温度を上げていくと電気二重層コンデンサ
のESRは、1000℃以上で低下し、従来の約1/2まで小さく
なる。FIG. 1 shows the relationship between the temperature when the powdered activated carbon was heat-treated and the average value of the ESR of 40 electric double layer capacitors. The horizontal axis in FIG. 1 is the temperature when the powdered activated carbon was heat-treated.
The vertical axis is the ESR of the electric double layer capacitor. When the temperature of the heat treatment of powdered activated carbon is increased, the ESR of the electric double layer capacitor decreases at 1000 ° C or more, and decreases to about half of the conventional value.
カーボンペースト電極に熱処理を加えた粉末活性炭を
用いることにより従来より低いESRの電気二重層コンデ
ンサを実現できた。An electric double layer capacitor with a lower ESR than before can be realized by using powdered activated carbon with heat treatment applied to the carbon paste electrode.
また、本発明の電気二重層コンデンサは、表−１に示
すように、ESR以外の特性は従来と同等である。Further, as shown in Table 1, the electric double-layer capacitor of the present invention has the same characteristics as the conventional one except for the ESR.
〔発明の効果〕 以上説明したように本発明は、カーボンペースト電極
の粉末活性炭を熱処理することにより、電気二重層コン
デンサのESRを低くできる効果がある。 [Effects of the Invention] As described above, the present invention has an effect of reducing the ESR of an electric double layer capacitor by heat-treating powdered activated carbon of a carbon paste electrode.
このように本発明のカーボンペースト電極は、工業的
価値大なるものがある。As described above, the carbon paste electrode of the present invention has industrial value.
第１図は本発明により得られた電気二重層コンデンサに
おいて粉末活性炭の熱処理温度と電気二重層コンデンサ
のESRとの関係を示すグラフであり、サンプル数40個の
平均値をプロットした図、第２図は本発明のカーボンペ
ースト電極を適用した電気二重層コンデンサの基本セル
の縦断面図、第３図は本発明の基本セルより成る電気二
重層コンデンサの縦断面図、第４図は従来の電気二重層
コンデンサの基本セルの縦断面図、第５図は従来の基本
セルより成る電気二重層コンデンサの縦断面図である。 1a……本発明の基本セル、1b……従来の基本セル、２…
…導電性セパレータ、3a……本発明のカーボンペースト
電極、3b……従来のカーボンペースト電極、４……非導
電性ガスケット、５……多孔性セパレータ、６……積層
体、７……絶縁ケース、８……金属外装ケース、９……
電極板、10……電極。FIG. 1 is a graph showing the relationship between the heat treatment temperature of powdered activated carbon and the ESR of an electric double layer capacitor in the electric double layer capacitor obtained according to the present invention, in which the average value of 40 samples is plotted. FIG. 3 is a longitudinal sectional view of a basic cell of an electric double layer capacitor to which the carbon paste electrode of the present invention is applied, FIG. 3 is a longitudinal sectional view of an electric double layer capacitor comprising the basic cell of the present invention, and FIG. FIG. 5 is a longitudinal sectional view of a basic cell of a double-layer capacitor, and FIG. 5 is a longitudinal sectional view of an electric double-layer capacitor comprising a conventional basic cell. 1a ... Basic cell of the present invention, 1b ... Conventional basic cell, 2 ...
... Conductive separator, 3a ... carbon paste electrode of the present invention, 3b ... conventional carbon paste electrode, 4 ... non-conductive gasket, 5 ... porous separator, 6 ... laminate, 7 ... insulating case , 8 …… metal outer case, 9 ……
Electrode plate, 10 ... electrode.
Claims (2)
とする電気二重層コンデンサ用カーボンペースト電極に
おいて、前記粉末活性炭として活性炭粒子間の接触抵抗
を下げるように熱処理された粉末活性炭が使用されてい
ることを特徴とするカーボンペースト電極。1. A carbon paste electrode for an electric double layer capacitor using a mixture of powdered activated carbon and an electrolyte solution as an electrode, wherein the powdered activated carbon is heat-treated so as to reduce the contact resistance between activated carbon particles. A carbon paste electrode.
されていることを特徴とする特許請求の範囲第１項記載
のカーボンペースト電極。2. The carbon paste electrode according to claim 1, wherein said powdered activated carbon is heat-treated at a temperature of 1000 ° C. or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155483A JP2666848B2 (en) | 1988-06-22 | 1988-06-22 | Carbon paste electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63155483A JP2666848B2 (en) | 1988-06-22 | 1988-06-22 | Carbon paste electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01321620A JPH01321620A (en) | 1989-12-27 |
| JP2666848B2 true JP2666848B2 (en) | 1997-10-22 |
Family
ID=15607033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63155483A Expired - Lifetime JP2666848B2 (en) | 1988-06-22 | 1988-06-22 | Carbon paste electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2666848B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2600939B2 (en) * | 1989-12-28 | 1997-04-16 | いすゞ自動車株式会社 | Method for manufacturing electrode of electric double layer capacitor |
| WO1996030318A1 (en) | 1995-03-30 | 1996-10-03 | Nippon Sanso Corporation | Porous carbonaceous material, process for producing the same, and use thereof |
| WO1996034402A1 (en) * | 1995-04-27 | 1996-10-31 | Nippon Sanson Corporation | Process for producing carbonaceous material for electric double-layer capacitor, and carbon electrode and electric double-layer capacitor |
| JPH10312937A (en) * | 1997-05-13 | 1998-11-24 | Nippon Sanso Kk | Manufacture of carbon material for electric double-layer capacitor, carbon electrode and electric double-layer capacitor |
| WO2001086674A1 (en) | 2000-05-09 | 2001-11-15 | Mitsubishi Chemical Corporation | Activated carbon for electric double layer capacitor |
| CN111221363B (en) * | 2020-01-16 | 2021-10-08 | 宁波市江北九方和荣电气有限公司 | Locomotive capacitor online operation temperature detection method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60189162A (en) * | 1984-03-07 | 1985-09-26 | Matsushita Electric Ind Co Ltd | Manufacture of polarization electrode |
-
1988
- 1988-06-22 JP JP63155483A patent/JP2666848B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01321620A (en) | 1989-12-27 |
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