JP4942116B2 - Electric double layer capacitor - Google Patents

Electric double layer capacitor Download PDF

Info

Publication number
JP4942116B2
JP4942116B2 JP2008067419A JP2008067419A JP4942116B2 JP 4942116 B2 JP4942116 B2 JP 4942116B2 JP 2008067419 A JP2008067419 A JP 2008067419A JP 2008067419 A JP2008067419 A JP 2008067419A JP 4942116 B2 JP4942116 B2 JP 4942116B2
Authority
JP
Japan
Prior art keywords
electric double
layer capacitor
double layer
sulfuric acid
polymer
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 - Fee Related
Application number
JP2008067419A
Other languages
Japanese (ja)
Other versions
JP2009224559A (en
Inventor
亘 大泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokin Corp
Original Assignee
NEC Tokin Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Tokin Corp filed Critical NEC Tokin Corp
Priority to JP2008067419A priority Critical patent/JP4942116B2/en
Publication of JP2009224559A publication Critical patent/JP2009224559A/en
Application granted granted Critical
Publication of JP4942116B2 publication Critical patent/JP4942116B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/13Energy storage using capacitors

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric double-layer capacitor which has electrodes formed by using activated carbon and electrolytic solution containing sulfuric acid, and improves long-term reliability of capacitor characteristics. <P>SOLUTION: The electric double-layer capacitor includes electrodes formed by using activated carbon and electrolytic solution containing sulfuric acid, and contains polyallylamine polymer having at least one selected from an allylamine structure represented by general formula (1), a diallylamine structure represented by general formula (2) and a diallylammonium structure represented by general formula (3), as an additive of the electrolytic solution. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、電気二重層コンデンサに関し、特に長期信頼性を改善した電気二重層コンデンサに関する。   The present invention relates to an electric double layer capacitor, and more particularly to an electric double layer capacitor with improved long-term reliability.

電気二重層コンデンサは、2種の異なる物質の境界面に形成される電気二重層の電気蓄積作用を利用している。この種のコンデンサは電池と電解コンデンサの中間の特性を有し、主にICメモリのバックアップやアクチュエータのバックアップに使用されている。   The electric double layer capacitor utilizes the electric storage action of the electric double layer formed at the interface between two different substances. This type of capacitor has characteristics intermediate between those of a battery and an electrolytic capacitor, and is mainly used for IC memory backup and actuator backup.

電気二重層コンデンサは使用する電解液によって、有機電解液系と水系の大きく2種類に分別することができる。有機電解液系の電気二重層コンデンサの代表的なものとして、小型のものは、表面に活性炭を主とする分極性電極層を形成した一対の集電体の間に、ポリプロピレン不織布などからなるセパレータを挟んで素子とし、この素子に電解液を含浸させ、金属容器に収容し、キャップとガスケットにより金属容器に密封したコイン型の構造をとっている。   The electric double layer capacitor can be roughly classified into two types, an organic electrolyte system and an aqueous system, depending on the electrolyte used. As a typical example of an organic electrolyte-based electric double layer capacitor, a small one is a separator made of polypropylene nonwoven fabric or the like between a pair of current collectors having a polarizable electrode layer mainly composed of activated carbon on the surface. The device has a coin-type structure in which the device is impregnated with an electrolytic solution, accommodated in a metal container, and sealed in the metal container with a cap and a gasket.

また、比較的大容量のものとして、シート状の分極性電極、集電体、セパレータを積層して渦巻状に巻き回してコンデンサ素子とし、この素子に電解液を含浸させ、金属容器に収容し、容器の開口部をキャップで密閉して構成した、巻回型の電気二重層コンデンサが製造されている。これらの分極性電極は大きな比表面積を有する活性炭粉末、電解液に対して不溶で電極をシート状に構成するためのバインダー、また電極の接触抵抗を下げるための導電性粉末(カーボンブラック等)から構成されている。   In addition, as a relatively large capacity, a sheet-like polarizable electrode, a current collector, and a separator are laminated and wound in a spiral shape to form a capacitor element. This element is impregnated with an electrolytic solution and accommodated in a metal container. A wound type electric double layer capacitor is manufactured in which the opening of a container is sealed with a cap. These polarizable electrodes are made of activated carbon powder having a large specific surface area, a binder that is insoluble in the electrolyte and that forms the electrode into a sheet, and conductive powder (such as carbon black) that lowers the contact resistance of the electrode. It is configured.

一方、水系の電気二重層コンデンサは、イオン透過性で非電子伝導性の多孔性セパレータを介して分離された一対の分極性電極となる電極があり、その分極性電極の外側には導電性ゴムなどからなる集電体が配置され、また分極性電極の外周には非導電性ゴムなどからなるガスケットが配置された構造となっている。電極は活性炭と希硫酸水溶液をよく混練しペースト状としたものを、非導電性ブチルゴムからなるガスケットと導電性ブチルゴムからなる集電体とで構成された隙間の部分に塗工することで製作している。この電極は絶縁成分であるバインダーを含まず、また単位セルを数枚積層し圧力を加えた状態で封止することで低抵抗の電気二重層コンデンサを提供することができる。   On the other hand, a water-based electric double layer capacitor has an electrode that becomes a pair of polarizable electrodes separated through an ion-permeable and non-electron conductive porous separator, and a conductive rubber is provided outside the polarizable electrode. And a gasket made of non-conductive rubber or the like is arranged on the outer periphery of the polarizable electrode. The electrode is manufactured by applying a mixture of activated carbon and dilute sulfuric acid aqueous solution to paste into a gap made up of a gasket made of non-conductive butyl rubber and a current collector made of conductive butyl rubber. ing. This electrode does not contain a binder, which is an insulating component, and can be provided with a low resistance electric double layer capacitor by stacking several unit cells and sealing them with pressure applied.

従来、希硫酸を電解液とした電気二重層コンデンサにおいて更なる特性改善のために電解液に添加剤と加える技術が開示されている。例えば特許文献1及び2においては添加剤としてポリ−4−ビニルピリジンを加えることで、硫酸と活性炭のペースト粘度を改善し、電極の充填精度を安定化させると共に自己放電特性を改善させる効果が記載されている。また特許文献3ではプロトン導電性高分子を活物質に用いた系において、添加剤としてイミダゾールを希硫酸へ加える技術が開示されている。この技術は高濃度のH+イオンから活物質の過酸化劣化(化学反応)を防ぐことで、サイクル特性を改善させる効果が記載されている。 Conventionally, a technique for adding an additive to an electrolytic solution for further improvement of characteristics in an electric double layer capacitor using dilute sulfuric acid as an electrolytic solution has been disclosed. For example, Patent Documents 1 and 2 describe the effect of adding poly-4-vinylpyridine as an additive to improve the paste viscosity of sulfuric acid and activated carbon, stabilize the filling accuracy of the electrode, and improve self-discharge characteristics. Has been. Patent Document 3 discloses a technique of adding imidazole as an additive to dilute sulfuric acid in a system using a proton conductive polymer as an active material. This technique describes the effect of improving cycle characteristics by preventing peroxidative degradation (chemical reaction) of the active material from high concentration of H + ions.

しかしながら特許文献1及び2には電気二重層コンデンサの信頼性の改善については記述が無く、一方、特許文献3はプロトン導電性高分子を電極とした系ではサイクル特性等の改善に効果があるものの、活性炭を電極に用いた電気二重層コンデンサでは反応機構が全く異なるため効果が見られなかった。   However, Patent Documents 1 and 2 do not describe improvement of the reliability of the electric double layer capacitor, while Patent Document 3 is effective in improving cycle characteristics and the like in a system using a proton conductive polymer as an electrode. In the electric double layer capacitor using activated carbon as the electrode, the reaction mechanism was completely different, so no effect was seen.

特開昭59−90919号公報JP 59-90919 A 特開平1−196807号公報JP-A-1-196807 特開2003−123834号公報JP 2003-123834 A

本発明は、上述の事情に鑑みてなされたもので、本発明の課題は硫酸を含む電解液と活性炭を用いた電極を有する電気二重層コンデンサにおいて、コンデンサ特性の長期信頼性を改善した電気二重層コンデンサを提供することにある。   The present invention has been made in view of the above circumstances, and an object of the present invention is to improve the long-term reliability of capacitor characteristics in an electric double layer capacitor having an electrode using an electrolyte containing sulfuric acid and activated carbon. It is to provide a multilayer capacitor.

本発明は上記課題を解決するためになされたものであり、本発明の電気二重層コンデンサは硫酸を含む電解液と活性炭を用いた電極を有する電気二重層コンデンサにおいて、前記電解液に化1における一般式(1)で示されるアリルアミン構造、又は一般式(2)で示されるジアリルアミン構造、又は一般式(3)で示されるジアリルアンモニウム構造から選択される少なくとも一種を有するポリアリルアミン系重合体を0.05〜5.0質量%添加させたことを特徴とする。   The present invention has been made to solve the above problems, and the electric double layer capacitor of the present invention is an electric double layer capacitor having an electrode using an electrolyte containing sulfuric acid and activated carbon. A polyallylamine polymer having at least one selected from an allylamine structure represented by the general formula (1), a diallylamine structure represented by the general formula (2), or a diallylammonium structure represented by the general formula (3) is 0. 0.05 to 5.0% by mass is added.

但し、各一般式においてRは各々独立に、H原子、メチル基、又はエチル基を表し、X-はHSO4 -、SO4 2-、CH3SO4 -、又はC25SO4 -を表す。 However, in each general formula, each R independently represents an H atom, a methyl group or an ethyl group, and X represents HSO 4 , SO 4 2− , CH 3 SO 4 , or C 2 H 5 SO 4 −. Represents.

Figure 0004942116
Figure 0004942116

本発明によれば、希硫酸水溶液にポリアリルアミン系重合体を0.05〜5.0質量%添加した電解液を電気二重層コンデンサに適用することで、電解液の保持性を改善し、特に高温下での電圧負荷試験において電解液のドライアップを抑制することが出来、結果として等価直列抵抗及び静電容量の劣化が少なく、長期信頼性に優れた電気二重層コンデンサを供給することが可能となる。   According to the present invention, by applying an electrolytic solution obtained by adding 0.05 to 5.0% by mass of a polyallylamine polymer to a dilute sulfuric acid aqueous solution to an electric double layer capacitor, the retention of the electrolytic solution is improved. It is possible to suppress the electrolyte dry-up in the voltage load test under high temperature, and as a result, it is possible to supply an electric double layer capacitor with little deterioration in equivalent series resistance and capacitance and excellent long-term reliability. It becomes.

図1は、本発明の電気二重層コンデンサの構成要素である単位セルの一例を示す断面図である。図1において1は単位セル、2は集電体、3は電解液(非表示)を含んだ電極(ペースト電極ともいう)、4はセパレータ、5はガスケットである。   FIG. 1 is a cross-sectional view showing an example of a unit cell that is a component of the electric double layer capacitor of the present invention. In FIG. 1, 1 is a unit cell, 2 is a current collector, 3 is an electrode containing an electrolyte (not shown) (also referred to as a paste electrode), 4 is a separator, and 5 is a gasket.

この単位セル1はセパレータ4により分割され、絶縁された正極側と負極側との一対の電極3を有する。電極3の外側には、導電性ゴムなどからなる集電体2が配置され、充放電可能な構造となっている。セパレータ4は、例えばポリプロピレンの不織布のような多孔質の絶縁シート構成することにより、電解液に含まれるイオンの移動を可能としている。そして、電極3とセパレータ4の外側には、ゴムなどからなる枠状のガスケット5が配され、集電体2とともに、電極3、セパレータ4及び電解液を封止している。   The unit cell 1 is divided by a separator 4 and has a pair of insulated electrodes 3 on the positive electrode side and the negative electrode side. A current collector 2 made of conductive rubber or the like is disposed outside the electrode 3 and has a chargeable / dischargeable structure. The separator 4 is made of a porous insulating sheet such as a nonwoven fabric of polypropylene, for example, thereby enabling movement of ions contained in the electrolytic solution. A frame-shaped gasket 5 made of rubber or the like is disposed outside the electrode 3 and the separator 4, and seals the electrode 3, the separator 4, and the electrolyte together with the current collector 2.

図2は、本発明の電気二重層コンデンサの一例を示す断面図である。複数個の単位セルを積層して、つまり直列に接続して用いた電気二重層コンデンサを示す。図2において、11は電気二重層コンデンサ、12は単位セル積層体、13a、13bは接続端子、14は絶縁体、15はケースである。この例においては、ケース15を金属で構成し、図2における下側の積層端面の集電体を、接続端子13aに直接接続するとともに、反対側の集電体を、ケース15を介して接続端子13bに接続している。   FIG. 2 is a cross-sectional view showing an example of the electric double layer capacitor of the present invention. An electric double layer capacitor used by stacking a plurality of unit cells, that is, connected in series is shown. In FIG. 2, 11 is an electric double layer capacitor, 12 is a unit cell laminate, 13a and 13b are connection terminals, 14 is an insulator, and 15 is a case. In this example, the case 15 is made of metal, and the current collector on the lower laminated end face in FIG. 2 is directly connected to the connection terminal 13 a and the current collector on the opposite side is connected via the case 15. It is connected to the terminal 13b.

本発明では、硫酸を含む電解液と活性炭を用いた電極を有する電気二重層コンデンサにおいて、電解液に一般式(1)で示されるアリルアミン構造、又は一般式(2)で示されるジアリルアミン構造、又は一般式(3)で示されるジアリルアンモニウム構造から選択される少なくとも一種を含むポリアリルアミン系重合体を添加したことを特徴としている。   In the present invention, in an electric double layer capacitor having an electrode containing an electrolyte containing sulfuric acid and activated carbon, the electrolyte is an allylamine structure represented by the general formula (1), a diallylamine structure represented by the general formula (2), or A polyallylamine-based polymer containing at least one selected from the diallylammonium structure represented by the general formula (3) is added.

本発明では希硫酸を電解液としているため、添加されるポリアリルアミン系重合体は水溶性であることが必須である。上記基本構造からなるポリアリルアミン系重合体は、側鎖にN原子を含む重合体であるため水溶性を有しており、希硫酸に対しても同様に溶解性を有している。またカルボキシメチルセルロース等の代表的な水溶性高分子と異なり、ポリアリルアミン系重合体は希硫酸中においても分解されることなく安定して存在することが出来る。この様にポリアリルアミン系重合体は希硫酸に対しても良好な溶解性を有しているため、任意の割合で希硫酸に溶解させることが可能となる。   In the present invention, since dilute sulfuric acid is used as the electrolyte, it is essential that the added polyallylamine polymer is water-soluble. The polyallylamine polymer having the above basic structure is water-soluble because it is a polymer containing an N atom in the side chain, and is similarly soluble in dilute sulfuric acid. Further, unlike typical water-soluble polymers such as carboxymethyl cellulose, the polyallylamine-based polymer can exist stably in dilute sulfuric acid without being decomposed. Thus, since the polyallylamine polymer has good solubility in dilute sulfuric acid, it can be dissolved in dilute sulfuric acid at an arbitrary ratio.

ポリアリルアミン系重合体は基本構造が単独からなる重合体でも良く、また複数の基本構造の重合した共重合体として用いても良く、更に基本構造と二酸化硫黄、マレイン酸、アクリルアミド等の共重合体として用いても良い。   The polyallylamine-based polymer may be a polymer having a basic structure alone, or may be used as a polymer having a plurality of basic structures. Further, the basic structure and a copolymer of sulfur dioxide, maleic acid, acrylamide, etc. It may be used as

例えば、ポリアリルアミン系重合体としては、アリルアミン重合体、アリルアミン-ジアリルアミン共重合体、アリルアミン−ジメチルアリルアミン共重合体、ジアリルアミン重合体、メチルジアリルアミン重合体、ジアリルジメチルアンモニウム硫酸塩重合体、ジアリルアミン−二酸化硫黄共重合体、ジアリルアミン−二酸化硫黄共重合体、メチルジアリルアミン−二酸化硫黄共重合体、ジアリルジメチルアンモニウム硫酸塩−二酸化硫黄共重合体、ジアリルジメチルアンモニウム硫酸塩−アクリルアミド共重合体、ジアリルアミン−マレイン酸共重合体、ジアリルアミンアミド硫酸塩−マレイン酸共重合体、ジアリルアミンアミド硫酸塩−マレイン酸−二酸化硫黄共重合体等が挙げられるが、特に上記に限定されるものでは無い。   For example, polyallylamine polymers include allylamine polymer, allylamine-diallylamine copolymer, allylamine-dimethylallylamine copolymer, diallylamine polymer, methyldiallylamine polymer, diallyldimethylammonium sulfate polymer, diallylamine-sulfur dioxide. Copolymer, diallylamine-sulfur dioxide copolymer, methyldiallylamine-sulfur dioxide copolymer, diallyldimethylammonium sulfate-sulfur dioxide copolymer, diallyldimethylammonium sulfate-acrylamide copolymer, diallylamine-maleic acid copolymer Examples thereof include, but are not particularly limited to, compounds, diallylamine amide sulfate-maleic acid copolymer, diallylamine amide sulfate-maleic acid-sulfur dioxide copolymer and the like.

希硫酸へのポリアリルアミン系重合体の添加の方法は特に限定されるものでは無く、粉末状のポリアリルアミン系重合体を希硫酸に添加しても良く、粉末状のポリアリルアミン系重合体を水に溶解させた水溶液を希硫酸に添加しても良く、酸にて中和処理した水溶液を希硫酸に添加しても良い。   The method for adding the polyallylamine-based polymer to the dilute sulfuric acid is not particularly limited, and a powdery polyallylamine-based polymer may be added to the dilute sulfuric acid. An aqueous solution dissolved in the aqueous solution may be added to dilute sulfuric acid, or an aqueous solution neutralized with an acid may be added to dilute sulfuric acid.

またポリアリルアミン系重合体は高分子であるため、添加量を増やすことで電解液の保持性を改善することが可能となる。このため高温下での電圧負荷試験においても電解液のドライアップを抑制することが出来、結果として等価直列抵抗及び静電容量の劣化の少なく、長期信頼性に優れた電気二重層コンデンサを供給することが可能となる。   In addition, since the polyallylamine-based polymer is a polymer, it is possible to improve the retention of the electrolytic solution by increasing the addition amount. For this reason, it is possible to suppress the electrolyte dry-up even in a voltage load test at high temperature, and as a result, an electric double layer capacitor with less deterioration in equivalent series resistance and capacitance and excellent long-term reliability is supplied. It becomes possible.

電解液に添加するポリアリルアミン系重合体の添加量は、あまり少なすぎると、電解液のドライアップ抑制効果が小さい。反面、ポリアリルアミン系重合体の多すぎると、電解液の粘度が上昇により等価直列抵抗の増加を引き起こしてしまう。このためポリアリルアミン系重合体は電解液に対して、0.05〜5.0質量%が好ましく、特に0.1〜3.0質量%含まれることが好ましい。   If the amount of the polyallylamine polymer added to the electrolytic solution is too small, the effect of suppressing the dry-up of the electrolytic solution is small. On the other hand, if there is too much polyallylamine-based polymer, the viscosity of the electrolyte increases and causes an increase in equivalent series resistance. For this reason, 0.05-5.0 mass% is preferable with respect to electrolyte solution, and, as for a polyallylamine type polymer, it is preferable that 0.1-3.0 mass% is contained especially.

以下に実施例を示し、さらに本発明を詳細に説明するが、本発明はその要旨を超えない限り、下記実施例より限定されるものではない。   EXAMPLES Examples will be shown below, and the present invention will be described in detail. However, the present invention is not limited to the following examples unless it exceeds the gist.

(実施例1)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20質量%(以下、wt%と記載する)水溶液をアリルアミン重合体の割合が1.5wt%となるように添加した。粒径4〜14μmのフェノール樹脂系活性炭と上記で調製した希硫酸水溶液に加え、よく混練しペースト状とした。次いで非導電性ブチルゴムからなるガスケットと導電性ブチルゴムからなる集電体とで構成されたシート(電極塗工部:厚さ0.33mm、直径5.2mm)を用意し、このシートの電極形成部にペーストを塗工することで電極を作製した。
Example 1
A 20% by mass (hereinafter referred to as wt%) aqueous solution of an allylamine polymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of the allylamine polymer was 1.5 wt%. In addition to the phenol resin activated carbon having a particle size of 4 to 14 μm and the dilute sulfuric acid aqueous solution prepared above, the mixture was well kneaded to obtain a paste. Next, a sheet (electrode coating part: thickness 0.33 mm, diameter 5.2 mm) composed of a gasket made of non-conductive butyl rubber and a current collector made of conductive butyl rubber was prepared, and an electrode forming part of this sheet An electrode was prepared by applying a paste to the substrate.

次いで電極が形成されたシートを一対用意し、セパレータを介してそれらを重ね合わせた。次に熱圧着を行うことでブチルゴムの加硫を促すことで封止することで単セルシートを作製し、単セルシートを6枚積層した後、所定の寸法にてシートを打ち抜き単位セル積層体を作製した。   Next, a pair of sheets on which electrodes were formed were prepared, and they were overlapped via a separator. Next, a single cell sheet is produced by sealing by encouraging vulcanization of butyl rubber by thermocompression bonding, and after stacking six single cell sheets, the sheet is punched out to a predetermined size and unit cell laminate Was made.

単位セル積層体を用いて図2に示した構造を有する電気二重層コンデンサ11を作製した。単位セル積層体12の図2における下側の集電体は接続端子13bと直接接続され、図2における上側の集電体は、ステンレスなどの金属からなる有底筒状のケース15の底部に接し、開口部の縁が内側に折り曲げられてかしめ加工が施され、絶縁体14を介して配されている接続端子13aに接続されている。   An electric double layer capacitor 11 having the structure shown in FIG. 2 was produced using the unit cell laminate. The lower current collector in FIG. 2 of the unit cell stack 12 is directly connected to the connection terminal 13b, and the upper current collector in FIG. 2 is attached to the bottom of the bottomed cylindrical case 15 made of metal such as stainless steel. In contact with each other, the edge of the opening is bent inward to be caulked, and connected to a connection terminal 13 a disposed via an insulator 14.

得られた電気二重層コンデンサは初期特性(等価直列抵抗及び静電容量)を測定後、環境温度+70℃、印加電圧5.5V、2000時間の信頼性試験を実施した。   The obtained electric double layer capacitor was measured for initial characteristics (equivalent series resistance and capacitance), and then subjected to a reliability test at an environmental temperature of + 70 ° C., an applied voltage of 5.5 V, and 2000 hours.

表1にコンデンサの初期特性と信頼性試験後の結果(測定数50個の平均値)を示す。   Table 1 shows the initial characteristics of the capacitors and the results after the reliability test (average value of 50 measured values).

(実施例2)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20wt%水溶液をアリルアミン重合体の割合が3.0wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 2)
A 20 wt% aqueous solution of an allylamine polymer was added to a diluted sulfuric acid aqueous solution with a concentration of 40% so that the ratio of the allylamine polymer was 3.0 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例3)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20wt%水溶液をアリルアミン重合体の割合が0.5wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 3)
A 20 wt% aqueous solution of an allylamine polymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of the allylamine polymer was 0.5 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例4)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20wt%水溶液をアリルアミン重合体の割合が0.1wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
Example 4
A 20 wt% aqueous solution of an allylamine polymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of the allylamine polymer was 0.1 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例5)
濃度40%の希硫酸水溶液に対して、アリルアミン−ジメチルアリルアミン共重合体の15wt%水溶液をアリルアミン−ジメチルアリルアミン共重合体の割合が1.5wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 5)
A 15 wt% aqueous solution of an allylamine-dimethylallylamine copolymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of the allylamine-dimethylallylamine copolymer was 1.5 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例6)
濃度40%の希硫酸水溶液に対して、ジアリルアミン硫酸塩重合体の25wt%水溶液をアリルアミン−ジメチルアリルアミン共重合体の割合が1.0wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 6)
A 25 wt% aqueous solution of diallylamine sulfate polymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of allylamine-dimethylallylamine copolymer was 1.0 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例7)
濃度40%の希硫酸水溶液に対して、メチルジアリルアミン−アミド硫酸塩重合体の25wt%水溶液をメチルジアリルアミン-アミド硫酸塩重合体の割合が2.0wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 7)
A 25 wt% aqueous solution of methyl diallylamine-amide sulfate polymer was added to a diluted sulfuric acid aqueous solution having a concentration of 40% so that the ratio of methyl diallylamine-amide sulfate polymer was 2.0 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例8)
濃度40%の希硫酸水溶液に対して、ジアリルメチルエチルアンモニウム エチルサルファイト−二酸化硫黄共重合体の25wt%水溶液をジアリルメチルエチルアンモニウム エチルサルファイト−二酸化硫黄共重合体の割合が0.5wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 8)
A 25 wt% aqueous solution of diallylmethylethylammonium ethylsulfite-sulfur dioxide copolymer with a dilute sulfuric acid aqueous solution with a concentration of 40% has a ratio of diallylmethylethylammonium ethylsulfite-sulfur dioxide copolymer of 0.5 wt%. It added so that it might become. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例9)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20wt%水溶液をアリルアミン重合体の割合が0.05wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
Example 9
A 20 wt% aqueous solution of an allylamine polymer was added to a 40% concentration dilute sulfuric acid aqueous solution so that the ratio of the allylamine polymer was 0.05 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(実施例10)
濃度40%の希硫酸水溶液に対して、アリルアミン重合体の20wt%水溶液をアリルアミン重合体の割合が5.0wt%となるように添加した。以下、実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Example 10)
A 20 wt% aqueous solution of an allylamine polymer was added to a dilute sulfuric acid aqueous solution having a concentration of 40% so that the ratio of the allylamine polymer was 5.0 wt%. Thereafter, an electric double layer capacitor was produced in the same manner as in Example 1, and the same reliability test was conducted.

(比較例1)
濃度40%の希硫酸水溶液に添加剤を添加しない以外は実施例1と同様に電気二重層コンデンサを作製し、同様の信頼性試験を実施した。
(Comparative Example 1)
An electric double layer capacitor was produced in the same manner as in Example 1 except that no additive was added to a 40% concentration dilute sulfuric acid aqueous solution, and the same reliability test was performed.

表1の結果より、本発明の実施例1〜10は比較例1と比較して、長期信頼性試験におけるコンデンサ特性の劣化が小さいことが明らかとなった。   From the results shown in Table 1, it has been clarified that Examples 1 to 10 of the present invention are less deteriorated in capacitor characteristics in the long-term reliability test than Comparative Example 1.

Figure 0004942116
Figure 0004942116

本発明の電気二重層コンデンサの単位セルを示す断面図。Sectional drawing which shows the unit cell of the electric double layer capacitor of this invention. 本発明の電気二重層コンデンサを示す断面図。Sectional drawing which shows the electric double layer capacitor of this invention.

符号の説明Explanation of symbols

1 単位セル
2 集電体
3 電極
4 セパレータ
5 ガスケット
11 電気二重層コンデンサ
12 単位セル積層体
13a、13b 接続端子
14 絶縁体
15 ケース
DESCRIPTION OF SYMBOLS 1 Unit cell 2 Current collector 3 Electrode 4 Separator 5 Gasket 11 Electric double layer capacitor 12 Unit cell laminated body 13a, 13b Connection terminal 14 Insulator 15 Case

Claims (1)

硫酸を含む電解液と活性炭を用いた電極を有する電気二重層コンデンサにおいて、前記電解液に化1における一般式(1)で示されるアリルアミン構造、又は一般式(2)で示されるジアリルアミン構造、又は一般式(3)で示されるジアリルアンモニウム構造から選択される少なくとも一種を有するポリアリルアミン系重合体を0.05〜5.0質量%添加させたことを特徴とする電気二重層コンデンサ。
(但し各一般式においてRは各々独立に、H原子、メチル基、又はエチル基を表し、X-はHSO4 -、SO4 2-、CH3SO4 -、又はC25SO4 -を表す。)
Figure 0004942116
In an electric double layer capacitor having an electrode containing an electrolytic solution containing sulfuric acid and activated carbon, the allylamine structure represented by the general formula (1) in the chemical formula 1 or the diallylamine structure represented by the general formula (2) in the electrolytic solution, or An electric double layer capacitor comprising 0.05 to 5.0% by mass of a polyallylamine-based polymer having at least one selected from the diallylammonium structure represented by the general formula (3).
(However, in each general formula, each R independently represents an H atom, a methyl group, or an ethyl group, and X represents HSO 4 , SO 4 2− , CH 3 SO 4 , or C 2 H 5 SO 4 −. Represents.)
Figure 0004942116
JP2008067419A 2008-03-17 2008-03-17 Electric double layer capacitor Expired - Fee Related JP4942116B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008067419A JP4942116B2 (en) 2008-03-17 2008-03-17 Electric double layer capacitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008067419A JP4942116B2 (en) 2008-03-17 2008-03-17 Electric double layer capacitor

Publications (2)

Publication Number Publication Date
JP2009224559A JP2009224559A (en) 2009-10-01
JP4942116B2 true JP4942116B2 (en) 2012-05-30

Family

ID=41241033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008067419A Expired - Fee Related JP4942116B2 (en) 2008-03-17 2008-03-17 Electric double layer capacitor

Country Status (1)

Country Link
JP (1) JP4942116B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5000260B2 (en) * 2006-10-19 2012-08-15 AzエレクトロニックマテリアルズIp株式会社 Method for forming fine pattern and resist substrate processing liquid used therefor
JP2011113991A (en) * 2009-11-24 2011-06-09 Nec Tokin Corp Electric double-layer capacitor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4700182B2 (en) * 2000-10-20 2011-06-15 株式会社日本触媒 Composition for cross-linked vinyl lactam and use thereof
JP2003012311A (en) * 2001-06-29 2003-01-15 Kawasaki Steel Corp Production method of polymer coated carbon material, negative-electrode material and lithium ion secondary battery
JP2007157976A (en) * 2005-12-05 2007-06-21 Nec Tokin Corp Electric double layer capacitor

Also Published As

Publication number Publication date
JP2009224559A (en) 2009-10-01

Similar Documents

Publication Publication Date Title
US9508493B2 (en) Hybrid negative plate for lead-acid storage battery and lead-acid storage battery
US8520365B2 (en) Charge storage device architecture for increasing energy and power density
CN104335308B (en) The electrode for capacitors with surface modified additive for lead-acid battery
JP2007005717A (en) Electrochemical element
CN107452511B (en) Lithium ion capacitor
US20130335884A1 (en) Carbon supercapacitor
JP4600136B2 (en) Aqueous electrolyte lithium secondary battery
US20030137798A1 (en) Electric double layer capacitor
JP2008182212A (en) Faraday capacitive type capacitor
KR101687588B1 (en) Binder comprising polymer formed by branching of block copolymer comprising poly(propylene oxide) block and poly(ethylene oxide) block
KR101464524B1 (en) Electrical double layer capacitor with excellent withstanding voltage property
JP2008288028A (en) Electrode for electrochemical cell and electrochemical cell
JP4989157B2 (en) Electric double layer capacitor
JP4942116B2 (en) Electric double layer capacitor
JP2008269824A (en) Electrochemical cell
JP5987303B2 (en) Electrochemical device using negative electrode containing magnesium element
JP5105401B2 (en) Electrode active material and electrochemical device using the same
JP2011113991A (en) Electric double-layer capacitor
JP2015012016A (en) Power-storage cell
JP6693863B2 (en) Electric double layer capacitor
JP5035993B2 (en) Electric double layer capacitor
JP2008252057A (en) Electrode for electrochemical capacitor, and the electrochemical capacitor
JP2009200368A (en) Electric double-layer capacitor
JP6605909B2 (en) Electric double layer capacitor
KR101745861B1 (en) Manufacturing method of quaternary ammonium salt and electric double layer capacitor using the quaternary ammonium salt manufactured by the method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20101110

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120209

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120222

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120224

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150309

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees