JPH0666231B2 - Electric double layer capacitor - Google Patents
Electric double layer capacitorInfo
- Publication number
- JPH0666231B2 JPH0666231B2 JP60045441A JP4544185A JPH0666231B2 JP H0666231 B2 JPH0666231 B2 JP H0666231B2 JP 60045441 A JP60045441 A JP 60045441A JP 4544185 A JP4544185 A JP 4544185A JP H0666231 B2 JPH0666231 B2 JP H0666231B2
- Authority
- JP
- Japan
- Prior art keywords
- double layer
- electric double
- layer capacitor
- electrolytic solution
- potassium
- 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
- 239000003990 capacitor Substances 0.000 title claims description 21
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 20
- 239000008151 electrolyte solution Substances 0.000 claims description 20
- -1 tetrafluoroborate Chemical compound 0.000 claims description 12
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 9
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000004090 dissolution Methods 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 239000011368 organic material Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 5
- VFTFKUDGYRBSAL-UHFFFAOYSA-N 15-crown-5 Chemical compound C1COCCOCCOCCOCCO1 VFTFKUDGYRBSAL-UHFFFAOYSA-N 0.000 description 4
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 150000005621 tetraalkylammonium salts Chemical class 0.000 description 3
- XEZNGIUYQVAUSS-UHFFFAOYSA-N 18-crown-6 Chemical compound C1COCCOCCOCCOCCOCCO1 XEZNGIUYQVAUSS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- WRFRKBJDTMPCOX-UHFFFAOYSA-N [O-]B(O)O.F.F.F.F.[K+] Chemical compound [O-]B(O)O.F.F.F.F.[K+] WRFRKBJDTMPCOX-UHFFFAOYSA-N 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001642 boronic acid derivatives Chemical class 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- UPOHIXYDQZCJLR-UHFFFAOYSA-J tetraethylazanium tetrafluoride Chemical compound C(C)[N+](CC)(CC)CC.[F-].[F-].[F-].[F-].C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC.C(C)[N+](CC)(CC)CC UPOHIXYDQZCJLR-UHFFFAOYSA-J 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)
Description
【発明の詳細な説明】 産業上の利用分野 本発明はエネルギー・ストレージ用素子として用いられ
る電気二重層コンデンサに関するものである。TECHNICAL FIELD The present invention relates to an electric double layer capacitor used as an element for energy storage.
従来の技術 近年、電気二重層コンデンサは半導体メモリーの急速な
需要の伸びに伴い、瞬時停電時のメモリーのバック・ア
ップ用素子として注目されている。2. Description of the Related Art In recent years, electric double layer capacitors have been attracting attention as an element for backing up a memory in the event of a momentary power failure, along with a rapid increase in demand for a semiconductor memory.
以下図面を参照しながら、前述したような従来の電気二
重層コンデンサについて説明する。Hereinafter, the conventional electric double layer capacitor as described above will be described with reference to the drawings.
第１図は、一般的な電気二重層コンデンサの概略を示す
ものである。第１図において、１は炭素繊維や活性炭繊
維からなる一対の分極性電極、２は導電電極である。３
は一対の分極性電極１間の絶縁を保ち、かつ電解液の保
持の役目を兼ねたセパレータである。この分極性電極１
と導電電極２とからなる電極間に、プロピレンカーボネ
ート、γ−ブチロラクトン、１，３−ジオキソランのう
ちから選択された１種もしくはそれ以上からなる有機溶
媒にテトラアルキルアンモニウム塩を溶解させた電解液
を含浸させ、セパレータ３を介在させて巻回又は積層し
ている。FIG. 1 shows an outline of a general electric double layer capacitor. In FIG. 1, 1 is a pair of polarizable electrodes made of carbon fiber or activated carbon fiber, and 2 is a conductive electrode. Three
Is a separator that maintains the insulation between the pair of polarizable electrodes 1 and also serves to hold the electrolytic solution. This polarizable electrode 1
An electrolytic solution in which a tetraalkylammonium salt is dissolved in an organic solvent composed of one or more selected from propylene carbonate, γ-butyrolactone and 1,3-dioxolane is provided between the electrodes composed of It is impregnated and wound or laminated with the separator 3 interposed.
以上のように構成された電気二重層コンデンサについ
て、以下その原理について説明する。The principle of the electric double layer capacitor configured as above will be described below.
一般に、電極系を構成している電極と溶液の界面をミク
ロ的にみると、異なった性質をもった層が形成されてい
るといわれている。相異なる二相が接触すると、界面に
正負の電荷が極めて短い距離を隔てて相対して分布す
る。この界面近傍の電荷の分布した層を電気二重層と呼
んでいる。電気二重層コンデンサは、この電気二重層に
電圧を加え、電荷を蓄積させる構成にしたものである。In general, it is said that layers having different properties are formed when the interface between the electrode and the solution constituting the electrode system is viewed microscopically. When two different phases come into contact with each other, positive and negative charges are relatively distributed at an interface over a very short distance. The layer in which charges are distributed near the interface is called an electric double layer. The electric double layer capacitor has a structure in which a voltage is applied to the electric double layer to accumulate charges.
発明が解決しようとする問題点 ここで従来の電気二重層コンデンサに用いられるテトラ
アルキルアンモニウム塩の溶媒に対する溶解度はアルキ
ル基によって異なり、一般にメチル基＜エチル基＜プロ
ピル基＜ブチル基の順に溶解度は高くなる。しかし高級
アルキル基になるに従って、イオンの拡散係数が小さく
なるため電導度が低くなり電気二重層コンデンサの内部
インピーダンスや直流抵抗が高くなる。更にテトラアル
キルアンモニウム塩は合成や精製に手間を要するため高
価である。Problems to be Solved by the Invention Here, the solubility of a tetraalkylammonium salt used in a conventional electric double layer capacitor in a solvent varies depending on the alkyl group, and generally the solubility is higher in the order of methyl group <ethyl group <propyl group <butyl group. Become. However, as it becomes a higher alkyl group, the diffusion coefficient of ions becomes smaller, so that the electric conductivity becomes lower and the internal impedance and DC resistance of the electric double layer capacitor become higher. Furthermore, the tetraalkylammonium salt is expensive because it requires time and effort for synthesis and purification.
本発明は上記欠点に鑑み、電導度を高くして電気特性が
優れた電気二重層コンデンサを提供するものである。In view of the above drawbacks, the present invention provides an electric double layer capacitor having high electric conductivity and excellent electric characteristics.
問題点を解決するための手段 上記の目的を達成するために本発明の電気二重層コンデ
ンサは、それぞれの片面に導電極を形成した炭素繊維や
活性炭繊維からなる一対の分極性電極に、リチウムやカ
リウムの四弗化ホウ酸塩の電解質をプロピレンカーボネ
ートやγ−ブチロラクトンからなる有機溶媒に溶解し、
さらに溶解助剤として環状ポリエーテルを添加してなる
電解質を含浸させて構成したものである。Means for Solving the Problems In order to achieve the above object, the electric double layer capacitor of the present invention has a pair of polarizable electrodes made of carbon fiber or activated carbon fiber having a conductive electrode formed on one surface thereof, and lithium or Dissolve the electrolyte of potassium tetrafluoroborate in an organic solvent consisting of propylene carbonate or γ-butyrolactone,
Further, the electrolyte is impregnated with an electrolyte obtained by adding a cyclic polyether as a dissolution aid.
作用 一般に無機電解質の溶媒に対する溶解性は、溶媒の持つ
誘電率εに依存し、εが大きいほど無機電解質の溶解性
は大きくなる。しかし電気二重層コンデンサに用いられ
ている電解液の溶媒であるプロピレンカーボネート、γ
−ブチロラクトンのεはそれぞれ６４，３９であるが、
電気二重層コンデンサ用電解液に必要な１０ms／cm以上
の電導度をリチウム及びカリウムの四弗化ホウ酸塩で得
られることができない。Action Generally, the solubility of an inorganic electrolyte in a solvent depends on the dielectric constant ε of the solvent. The larger ε, the greater the solubility of the inorganic electrolyte. However, propylene carbonate, which is the solvent of the electrolyte used in electric double layer capacitors, γ
-Butyrolactone has ε of 64 and 39, respectively,
The conductivity of 10 ms / cm or more required for the electrolytic solution for electric double layer capacitors cannot be obtained with lithium and potassium tetrafluoroborate.
しかしながら、この電解液系にデカリルー１５−クラウ
ン−５（以下単に１５−クラウン−５という）、あるい
はブチルシクロヘキシル−１８−クラウン−６（以下単
に１８−クラウン−６という）などからなる環状ポリエ
ーテルを加えることにより、リチウム塩及びカリウム塩
の溶解量が増し、十分な電導度を得ることができる。こ
れは第１式に示すようにリチウムイオンやカリウムイオ
ンが環状ポリエーテル内にとりこまれ、更にこの環状ポ
リエーテルと有機溶剤の親和性が良いためにイオンが安
定に溶液中に存在することに起因している。However, in this electrolyte system, a cyclic polyether composed of decalylu 15-crown-5 (hereinafter simply referred to as 15-crown-5) or butylcyclohexyl-18-crown-6 (hereinafter simply referred to as 18-crown-6) is used. By adding, the dissolved amount of the lithium salt and the potassium salt is increased, and sufficient conductivity can be obtained. This is due to the fact that lithium ions and potassium ions are incorporated into the cyclic polyether as shown in Formula 1, and the ions are stably present in the solution due to the good affinity between the cyclic polyether and the organic solvent. is doing.
リチウム、カリウムはイオン半径がそれぞれ異なるた
め、各イオンをとりこめる環状ポリエーテルの構造は自
ずと異なり、リチウムイオンは１５−クラウン−５、カ
リウムイオンは１８−クラウン−６の添加により溶解度
が増す。このようにして得られた高電導電解液により電
気二重層コンデンサの電気特性を向上させることができ
る。 Since lithium and potassium have different ionic radii, the structure of the cyclic polyether which takes in each ion is naturally different, and the solubility is increased by adding 15-crown-5 for lithium ion and 18-crown-6 for potassium ion. The high-conductivity electrolysis solution thus obtained can improve the electric characteristics of the electric double layer capacitor.
実施例 以下、具体的実施例により本発明を説明する。EXAMPLES Hereinafter, the present invention will be described with reference to specific examples.
〔実施例１〕 第１図に示すようにフェノール系活性炭繊維製の布（厚
さ0.5mm，比表面積2000m2／gr）からなる一対の分極性
電極１の表面に、厚さ５μｍのアルミニウム層をプラズ
マ溶射して導電電極２を形成する。この２層構造物を直
径２cmの円板状に打抜き型で抜き取り電極体を得る。こ
の電極体にプロピレンカーボネートにリチウムの四弗化
ホウ酸塩（LiBF4）１０wt%を加え溶解し、更に１５−ク
ラウン−５、２wt%を加えた組成を含浸させた後、間に
セパレータ３を介在させて重ね合わせ、更にこれをステ
ンレスケース４内に収納するとともに、ケース４の開口
端にガスケット５を配置して、かしめにより封口を行
う。第１表に、この発明による電気二重層コンデンサに
用いた電解液の電導度及び一対の分極性電極１のインピ
ーダンスと直流抵抗を測定した結果を示す。Example 1 As shown in FIG. 1, an aluminum layer having a thickness of 5 μm was formed on the surface of a pair of polarizable electrodes 1 made of a cloth made of phenol-based activated carbon fiber (thickness 0.5 mm, specific surface area 2000 m 2 / gr). Is plasma sprayed to form the conductive electrode 2. This two-layer structure is punched out into a disc shape with a diameter of 2 cm to obtain an electrode body. To this electrode body, 10 wt% of lithium tetrafluoroborate (LiBF 4 ) was added and dissolved in propylene carbonate, and further impregnated with a composition containing 15-crown-5 and 2 wt%, and a separator 3 was placed between them. The stainless steel case 4 is housed in the stainless steel case 4, and the gasket 5 is arranged at the open end of the case 4 to seal the case by caulking. Table 1 shows the results of measuring the electrical conductivity of the electrolytic solution used in the electric double layer capacitor according to the present invention and the impedance and DC resistance of the pair of polarizable electrodes 1.
同じく第１表には、比較のために従来の電解液としてプ
ロピレンカーボネートにリチウムの四弗化ホウ酸塩１０
wt%を加え溶解したものとテトラエチルアンモニウムの
四弗化ホウ化酸塩１０wt%をプロピレンカーボネートに
溶解したものを含浸させた電気二重層コンデンサについ
ても同上の測定を行いその結果を示す。Similarly, in Table 1, for comparison, a conventional electrolyte solution of propylene carbonate and lithium tetrafluoroborate is used.
The same measurement was carried out for the electric double layer capacitor impregnated with the one obtained by adding wt% and dissolved and the one obtained by dissolving 10 wt% of tetraethylammonium tetrafluoroborate in propylene carbonate, and the results are shown.
〔実施例２〕 実施例１の電解液の部分を変更し、プロピレンカーボネ
ートにカリウムの四弗化ホウ酸塩（KBF4）１０wt%と１
８−クラウン−６，２wt%を加え溶解してなる電解液と
した。[Example 2] The electrolyte solution of Example 1 was changed, and 10% by weight of potassium tetrafluoride borate (KBF 4 ) was added to propylene carbonate to 1%.
An electrolyte solution was prepared by adding and dissolving 8-crown-6,2 wt%.
比較のための電解液はプロピレンカーボネートにカリウ
ムの四弗化ホウ酸塩１０wt%を加え溶解して成る電解液
とし、実施例１と同様の測定を行った。結果を第１表に
示す。The electrolytic solution for comparison was an electrolytic solution prepared by adding 10 wt% of potassium tetrafluoroborate to propylene carbonate and dissolving it. The same measurement as in Example 1 was performed. The results are shown in Table 1.
〔実施例３〕 実施例１の電解液の部分を変更し、γ−ブチロラクトン
にリチウムの四弗化ホウ酸塩１０wt%と１５−クラウン
−５，２wt%を加え溶解してなる電解液とした。[Example 3] The electrolytic solution of Example 1 was changed, and 10% by weight of lithium tetrafluoroborate and 15-crown-5,2% by weight of γ-butyrolactone were added and dissolved to obtain an electrolytic solution. .
比較のための電解液はγ−ブチロラクトンにリチウムの
四弗化ホウ酸１０wt%を加え溶解したものと、テトラエ
チルアンモニウムの四弗化ホウ酸１０wt%をγ−ブチロ
ラクトン溶解したものを含浸した電気二重層コンデンサ
について、実施例１と同様の測定を行った。結果を第１
表に示す。An electrolytic solution for comparison was an electric double layer impregnated with γ-butyrolactone dissolved in 10% by weight of lithium tetrafluoroborate and 10% by weight of tetraethylammonium tetrafluoroborate dissolved in γ-butyrolactone. The same measurement as in Example 1 was performed on the capacitor. First result
Shown in the table.
〔実施例４〕 実施例１の電解液の部分を変更し、γ−ブチロラクトン
にカリウムの四弗化ホウ酸塩１０wt%と１８−クラウン
６，２wt%を加え溶解してなる電解液とした。[Example 4] The electrolytic solution of Example 1 was changed, and 10% by weight of tetrafluoroborate potassium and 6,2% by weight of 18-crown were added to and dissolved in γ-butyrolactone.
比較のための電解液はγ−ブチロラクトンにカリウムの
四弗化ホウ酸１０wt%を加え溶解してなる電解液とし、
実施例１と同様の測定を行った。An electrolytic solution for comparison is an electrolytic solution prepared by dissolving 10% by weight of tetrafluoroboric acid of potassium in γ-butyrolactone.
The same measurement as in Example 1 was performed.
結果を第１表に示す。The results are shown in Table 1.
実施例１，２，３及び４の結果から判るように、無機の
電解質を用いた場合いずれの場合も各特性は本発明品の
方が従来品に比べ優れており、更にテトラエチルアンモ
ニウムの四弗化ホウ酸塩同等以上の特性を得た。 As can be seen from the results of Examples 1, 2, 3 and 4, the characteristics of the product of the present invention are superior to those of the conventional product in each case in which an inorganic electrolyte is used, and tetraethylammonium tetrafluoride is used. The characteristics equal to or better than the modified borate were obtained.
つまり環状ポリエーテルの添加により、リチウム及びカ
リウムの四弗化ホウ酸塩の溶解度が上がり、電解液の導
電度が高くなる。このため電気二重層コンデンサのイン
ピーダンスと直流抵抗が低下していることを示してい
る。That is, the addition of the cyclic polyether increases the solubility of lithium and potassium tetrafluoroborate, and increases the conductivity of the electrolytic solution. This shows that the impedance and DC resistance of the electric double layer capacitor are lowered.
このように本実施例によれば、環状ポリーエーテルの添
加により電解液の電導度を上げ、その結果内部インピー
ダンス及び直流抵抗の各特性の向上を図ることができ
る。As described above, according to this example, the conductivity of the electrolytic solution can be increased by adding the cyclic polyether, and as a result, the internal impedance and the DC resistance can be improved.
発明の効果 以上のような本発明によれば、それぞれの片面に導電電
極を形成した炭素繊維や活性炭繊維からなる一対の分極
性電極に、リチウムやカリウムの四弗化ホウ酸塩の電解
質をプロピレンカーボネートやγ−ブチロラクトンから
なる有機溶媒に溶解し、さらに溶解助剤として環状ポリ
エーテルを添加してなる電解液を含浸させて構成したも
ので、溶解助剤としての環状ポリエーテルの添加によ、
リチウム塩やカリウム塩の溶解度を上げることができる
ため、電解液の導電度も高まり、さらに内部インピーダ
ンスや直流抵抗の電気特性も向上させることができるも
のである。EFFECTS OF THE INVENTION According to the present invention as described above, a pair of polarizable electrodes made of carbon fibers or activated carbon fibers each having a conductive electrode formed on one surface thereof is used as an electrolyte of lithium or potassium tetrafluoride borate. Dissolved in an organic solvent consisting of carbonate or γ-butyrolactone, further impregnated with an electrolyte solution formed by adding a cyclic polyether as a dissolution aid, by the addition of a cyclic polyether as a dissolution aid,
Since the solubility of the lithium salt or potassium salt can be increased, the conductivity of the electrolytic solution can be increased, and the electrical characteristics such as internal impedance and DC resistance can be improved.
第１図は本発明の一実施例における電気二重層コンデン
サの断面図、第２図は一般的な電気二重層コンデンサの
概略図である。 １……分極性電極、２……導電電極。FIG. 1 is a sectional view of an electric double layer capacitor in one embodiment of the present invention, and FIG. 2 is a schematic view of a general electric double layer capacitor. 1 ... Polarizable electrode, 2 ... Conductive electrode.
Claims (1)
繊維や活性炭繊維からなる一対の分極性電極に、リチウ
ムやカリウムの四弗化ホウ酸塩の電解質をプロピレンカ
ーボネートやγ−ブチロラクトンからなる有機溶媒に溶
解し、さらに溶解助剤として環状ポリエーテルを添加し
てなる電解液を含浸させて構成したことを特徴とする電
気二重層コンデンサ。1. A pair of polarizable electrodes composed of carbon fibers or activated carbon fibers each having a conductive electrode formed on one surface thereof, and an electrolyte of tetrafluoroborate of lithium or potassium and an organic material composed of propylene carbonate or γ-butyrolactone. An electric double layer capacitor which is characterized by being dissolved in a solvent and further impregnated with an electrolytic solution obtained by adding a cyclic polyether as a dissolution aid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60045441A JPH0666231B2 (en) | 1985-03-07 | 1985-03-07 | Electric double layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60045441A JPH0666231B2 (en) | 1985-03-07 | 1985-03-07 | Electric double layer capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61204925A JPS61204925A (en) | 1986-09-11 |
| JPH0666231B2 true JPH0666231B2 (en) | 1994-08-24 |
Family
ID=12719410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60045441A Expired - Lifetime JPH0666231B2 (en) | 1985-03-07 | 1985-03-07 | Electric double layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0666231B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2759211B1 (en) * | 1997-02-06 | 1999-04-30 | Electricite De France | DOUBLE LAYER TYPE SUPERCAPACITOR COMPRISING A LIQUID ORGANIC ELECTROLYTE |
| DE10347568A1 (en) * | 2003-10-14 | 2005-05-12 | Degussa | Capacitor with ceramic separation layer |
| JP2006210817A (en) * | 2005-01-31 | 2006-08-10 | Tokuyama Corp | Non-aqueous electrolyte for electrochemical capacitors |
-
1985
- 1985-03-07 JP JP60045441A patent/JPH0666231B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61204925A (en) | 1986-09-11 |
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