JPH02240910A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH02240910A JPH02240910A JP1062418A JP6241889A JPH02240910A JP H02240910 A JPH02240910 A JP H02240910A JP 1062418 A JP1062418 A JP 1062418A JP 6241889 A JP6241889 A JP 6241889A JP H02240910 A JPH02240910 A JP H02240910A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- electric double
- layer capacitor
- double layer
- salt
- 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
- 239000003990 capacitor Substances 0.000 title claims description 25
- 239000003792 electrolyte Substances 0.000 claims abstract description 40
- -1 aliphatic ammonium salt Chemical class 0.000 claims abstract description 20
- 125000005497 tetraalkylphosphonium group Chemical group 0.000 claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 14
- 239000010935 stainless steel Substances 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 150000001450 anions Chemical class 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 150000001768 cations Chemical class 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims 3
- RILZRCJGXSFXNE-UHFFFAOYSA-N 2-[4-(trifluoromethoxy)phenyl]ethanol Chemical compound OCCC1=CC=C(OC(F)(F)F)C=C1 RILZRCJGXSFXNE-UHFFFAOYSA-N 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 7
- 230000006866 deterioration Effects 0.000 abstract description 6
- 150000003863 ammonium salts Chemical class 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 125000002723 alicyclic group Chemical group 0.000 abstract 1
- 239000000463 material Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000010407 anodic oxide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000002001 electrolyte material Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 150000005621 tetraalkylammonium salts Chemical class 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241000824268 Kuma Species 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000005207 tetraalkylammonium group Chemical group 0.000 description 1
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、各種電子機器にメモリーバックアップ用等と
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。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric double layer capacitor used for memory backup in various electronic devices.
従来の技術
従来のこの種の電気二重層コンデンサは、活性炭粒子と
適当なバインダーとを練合したものをプレス成型あるい
は集電体金属の上に塗布したものや、活性炭繊維上にア
ルミニウムの溶射層を形成して分極性電極とし、この分
極性電極を金属ケースに収納し、そして２つの分極性電
極間に電解液を含浸させたセパレータを介在させて対向
させ、その後、金属ケースの周縁部をガスケットを介し
て封口することにより、構成していた。Conventional technology Conventional electric double layer capacitors of this type are made by press-molding or coating a mixture of activated carbon particles and a suitable binder on a current collector metal, or by spraying a layer of aluminum on activated carbon fibers. This polarizable electrode is housed in a metal case, and a separator impregnated with an electrolyte is interposed between the two polarizable electrodes to face each other, and then the peripheral edge of the metal case is It was constructed by sealing it with a gasket.
発明が解決しようとする課題
一般に電気二重層コンデンサの耐電圧は、使用する集電
体、金属ケース材料と電解液の組み合わせにより大きく
左右される。例えば金属ケース材料として、ステンレス
スチールやアルミニウムを陽極材料とし、かつステンレ
ススチールを陰極材料とした従来の電気二重層コンデン
サは、アノード分極した場合には、陽極を構成する金属
材料が完全な不動態を作らずに溶解してしまう。このた
め、例えば、７０℃の環境温度下では単セル当りに２．
８ｖ印加して２０００時間連続使用できるものが、８６
℃の高温下では単セル当シの印加電圧を１．８ｖまで下
げないと、２０００時間連続使用することはできなかっ
た。Problems to be Solved by the Invention Generally, the withstand voltage of an electric double layer capacitor is greatly influenced by the combination of the current collector, metal case material, and electrolyte used. For example, in a conventional electric double layer capacitor that uses stainless steel or aluminum as the anode material and stainless steel as the cathode material as the metal case material, when the anode is polarized, the metal material that makes up the anode becomes completely passive. It dissolves without being made. For this reason, for example, at an environmental temperature of 70°C, 2.0% per single cell.
The one that can be used continuously for 2000 hours with 8V applied is 86
At high temperatures of .degree. C., continuous use for 2000 hours was not possible unless the voltage applied to each single cell was lowered to 1.8V.
これは、電解液の材料として用いる電解質のテトラアル
キルアンモニウム塩が陽極を構成する金属材料に対し、
酸化皮膜を形成する能力に欠けるためである。This is because the tetraalkylammonium salt of the electrolyte used as the material for the electrolyte is different from the metal material that constitutes the anode.
This is because it lacks the ability to form an oxide film.
そこで、テトラアルキルアンモニウム塩の代ワりにテト
ラアルキルホスホニウムを使用することが提案されたが
、この塩はそれ自体の高温下での安定性に問題があり、
電気二重層コンデンサ用の電解液としては満足できると
いう材料ではなかった。Therefore, it was proposed to use tetraalkylphosphonium instead of tetraalkylammonium salt, but this salt itself has problems with its stability at high temperatures.
The material was not satisfactory as an electrolyte for electric double layer capacitors.
本発明は、このような課題を解決するためＫなされたも
ので、８６℃の高温度下でも特性変化が少なく、長期の
信頼性の面でも優れた電気二重層コンデンサを提供する
ことを目的とするものである。The present invention was developed to solve these problems, and its purpose is to provide an electric double layer capacitor that exhibits little change in characteristics even at a high temperature of 86°C and has excellent long-term reliability. It is something to do.
課題を解決するための手段
上記課題を解決するために本発明の電気二重層コンデン
サハ、アルミニウム４ｊ、＜ハステンレススチール製の
陽極部材と、ステンレススチール製の陰極部材とにより
外装ケースを構成し、この外装ケースの内部に活性炭素
からなる一対の分極性電極を設け、この一対の分極性電
極の間にセパレータを介在させて重ね合わせるとともに
、電解液を含浸させ、この電解液は少なくともテトラア
ルキルホスホニウム塩と脂肪族アンモニウム塩もしくは
脂環式アンモニウム塩を含む２成分以上の混合系電解質
を有機溶媒に溶解させたものを用いるようにしたもので
ある。Means for Solving the Problems In order to solve the above problems, an electric double layer capacitor of the present invention comprises an exterior case made of an anode member made of aluminum 4j, a cathode member made of stainless steel, and a cathode member made of stainless steel, A pair of polarizable electrodes made of activated carbon are provided inside this exterior case, and the pair of polarizable electrodes are overlapped with a separator interposed between them, and are impregnated with an electrolyte, which contains at least tetraalkylphosphonium. A mixed electrolyte containing two or more components including a salt and an aliphatic ammonium salt or an alicyclic ammonium salt is dissolved in an organic solvent.
また本発明において、混合系電解液の電解質を構成する
テトラアルキルホスホニウム塩ビ、アニオンとして電導
度および耐電圧の面から４フッ化ホウ酸を使用し、かつ
カチオンはアルキル基の炭素数を電気化学的な特性面か
ら１〜４としている。In addition, in the present invention, tetraalkylphosphonium vinyl chloride is used as the electrolyte of the mixed electrolyte solution, tetrafluoroboric acid is used as the anion from the viewpoint of electrical conductivity and withstand voltage, and the cation is electrochemically It is rated 1 to 4 from the viewpoint of characteristics.
そしてまた混合系電解質の残る１成分は電導度および耐
電圧の面から脂肪族アンモニウム塩あるいは脂環式のア
ンモニウム塩を使用している。As the remaining component of the mixed electrolyte, an aliphatic ammonium salt or an alicyclic ammonium salt is used from the viewpoint of conductivity and withstand voltage.
脂肪族アンモニウム塩を混合する場合は、炭素数が１へ
４のテトラアルキルアンモニウム４フツ化ホウ酸塩を電
導度および耐電圧の面から使用しており、特に優れた電
解質としては、テトラブチルアンモニウムテトラフルオ
ロボレートとテトラブチルアンモニウムテトラフルオロ
ボレートが挙げられる。When mixing aliphatic ammonium salts, tetraalkylammonium tetrafluoroborate having 1 to 4 carbon atoms is used from the viewpoint of conductivity and withstand voltage. Tetrabutylammonium is a particularly excellent electrolyte. Examples include tetrafluoroborate and tetrabutylammonium tetrafluoroborate.
また、脂環式のアンモニウム塩を混合する場合は、下記
の一般式に示される（ＩＬ）〜（Ｃ）の構造をもつ４フ
ツ化ホウ酸塩を使用している。When an alicyclic ammonium salt is mixed, tetrafluoroborates having structures (IL) to (C) shown in the following general formula are used.
（ＩＬ） （ｂ）
（Ｃ）ただし、上記一般式においてＲ，、Ｒ２は炭素数
１〜４のアルキル基を示している。(IL) (b)
(C) However, in the above general formula, R, and R2 represent an alkyl group having 1 to 4 carbon atoms.
またこのような混合系電解質を用いた電解液濃度は各々
の電解質のモル濃度の和を０．５〜２Ｍ／１の範囲とし
、さらにテトラアルキルホスホニウム塩の混合モル比率
は１０〜５０％の範囲としている。Further, the electrolyte concentration using such a mixed electrolyte is such that the sum of the molar concentrations of each electrolyte is in the range of 0.5 to 2M/1, and the mixed molar ratio of the tetraalkylphosphonium salt is in the range of 10 to 50%. It is said that
作用
上記解決手段において、テトラアルキルホスホニウム塩
を電解質とした電解液は陽極酸化被膜を作りやすいため
、陽極部材を構成する金属材料の溶解を抑制する作用が
あるが、電解液自体の熱安定性に問題があり、それ単独
では電気二重層コンデンサの電解液材料としては問題が
あ見また。Effect In the above solution, the electrolytic solution using a tetraalkylphosphonium salt as an electrolyte tends to form an anodic oxide film, so it has the effect of suppressing the dissolution of the metal material constituting the anode member, but the thermal stability of the electrolytic solution itself There are also problems when used alone as an electrolyte material for electric double layer capacitors.
脂肪族アンモニウム塩または脂環式のアンモニウム塩に
一ついては、電解液自体の熱安定性は良いが。Regarding aliphatic ammonium salts or alicyclic ammonium salts, the electrolyte itself has good thermal stability.
陽極部材を構成する金属材料に対しての酸化皮膜形成能
力がなく、そのため、高温下でコンデンサ素子に電圧を
連続的に印加すると、電気特性の劣化が速くなるという
問題があるため、本発明では上記両方の電解質材料を混
合して用いたもので、これにより、陽極部材を構成する
金属材料に対し陽極酸化皮膜を形成することができると
ともに、高温下での電解液の電気特性の劣化も抑えるこ
とができるものである。The present invention does not have the ability to form an oxide film on the metal material constituting the anode member, and as a result, there is a problem that the electrical characteristics deteriorate rapidly when a voltage is continuously applied to the capacitor element at high temperatures. A mixture of both of the above electrolyte materials is used, which makes it possible to form an anodic oxide film on the metal material that makes up the anode member, and also suppresses deterioration of the electrical properties of the electrolyte at high temperatures. It is something that can be done.
そして前記混合系電解質を用いた電解液濃度は各々の電
解質のモル濃度の和をＯ，Ｓ〜２Ｍ／！の範囲としてい
るため、次のような問題はなくなるものである。つまり
、低濃度の場合、電気二重層を形成するのに十分なイオ
ンが存在しないため、容量が取り出せないばかりか、溶
液中のバルクイオン濃度が低いために内部抵抗が増加す
る原因となり、また逆に、イオン濃度が高すぎると、電
解液中の反応性の不純物が多くなり、結果的にコンデン
サ素子の耐電圧を下げるばかりか、コンデンサ素子が低
温下にさらされた場合、電解質の溶解度が低下してコン
デンサ素子の内部に電解質が析出し、特性劣化を招く原
因となるが、上記した範囲とすることＫより、このよう
な問題はなくなるものである。The electrolyte concentration using the mixed electrolyte is the sum of the molar concentrations of each electrolyte: O, S ~ 2M/! Since the range is set to , the following problems will be eliminated. In other words, at low concentrations, there are not enough ions to form an electric double layer, so not only can the capacity not be extracted, but the low bulk ion concentration in the solution causes an increase in internal resistance, and vice versa. On the other hand, if the ion concentration is too high, the amount of reactive impurities in the electrolyte increases, which not only reduces the withstand voltage of the capacitor element, but also reduces the solubility of the electrolyte when the capacitor element is exposed to low temperatures. This causes electrolyte to precipitate inside the capacitor element, leading to deterioration of characteristics.However, by keeping the temperature within the above-mentioned range, such problems will be eliminated.
また混合系電解質において、テトラアルキルホスホニウ
ム塩の混合モル比率を１０〜６０チの範囲としているた
め、特性変化を小さくすることができる。つまシ、テト
ラアルキルホスホニウム塩自体の高温度下での電気化学
特性は悪いため、この範囲以上の高い比率で混合した場
合、テトラアルキルホスホニウム塩の分解によって起こ
るガス発生やポリマーの生成によるコンデンサ素子の劣
化反応が支配的となるが、上記した範囲とすることによ
り、このような問題もなくなるものである。Further, in the mixed electrolyte, since the mixing molar ratio of the tetraalkylphosphonium salt is in the range of 10 to 60, changes in characteristics can be reduced. However, since the electrochemical properties of tetraalkylphosphonium salts themselves are poor at high temperatures, if they are mixed at a high ratio above this range, the decomposition of the tetraalkylphosphonium salts may cause gas generation and polymer formation, which may damage the capacitor element. Although the deterioration reaction becomes dominant, such a problem can be eliminated by setting it within the above range.
実施例 以下、本発明の具体的な実施例について説明する。Example Hereinafter, specific examples of the present invention will be described.
実施例１
第１図に示すように、フェノール系活性炭素繊維の布（
厚さ０．５鵡、比表面積２ｏｏｏｒｌ／ｐ−）からなる
分極性電極１の片面に厚さ２６０μｌのアルミニウム層
２をプラズマ溶射法により形成し、そしてこの２層構造
物を直径２ｃ１ｎの円板状に打ち抜き型で抜き取って電
極体を構成する。この１ｖ極体に電解液を含浸させた後
、その間にセパレータ３を介在させて重ね合わせ、さら
にこれをステンレススチール０−２５１１１１ ＋アル
ミニウム０．０５ｍ（純度９９．９９％以上）よシなる
クラッド材製の下ケース４をアルミニウム層６を内側に
して陽極側に用い、そして陰極側であるステンレススチ
ール製の上ケース６との間に挾み、さらに前記上ケース
６および下ケース４の開口端にガスケット７を配置する
とともに、かしめによシ封口を行なう。Example 1 As shown in Figure 1, a phenolic activated carbon fiber cloth (
An aluminum layer 2 with a thickness of 260 μl is formed on one side of a polarizable electrode 1 with a thickness of 0.5 μl and a specific surface area of 2 ooorl/p− by plasma spraying, and this two-layer structure is formed into a circular plate with a diameter of 2 c1n. The electrode body is formed by punching out the electrode body using a punching die. After impregnating this 1V pole body with an electrolyte, the separator 3 is interposed between them and they are overlapped, and then this is layered with a cladding material such as stainless steel 0-251111 + aluminum 0.05m (purity of 99.99% or more). A lower case 4 made of stainless steel is used as the anode side with the aluminum layer 6 inside, and is sandwiched between the upper case 6 made of stainless steel and the cathode side, and the open ends of the upper case 6 and the lower case 4 are The gasket 7 is placed and the opening is caulked and sealed.
このようにして作製した電気二重層コンデンサの単セル
を使用し、第１表に示す電解液組成で初期の内部直流抵
抗と容量を測定した後、８６℃で単セルに２．８ｖの直
流電圧を連続２０００時間印加した後の内部直流抵抗と
容量の変化を示した。Using the single cell of the electric double layer capacitor produced in this way, the initial internal DC resistance and capacity were measured with the electrolyte composition shown in Table 1, and then a DC voltage of 2.8 V was applied to the single cell at 86°C. Changes in internal DC resistance and capacitance after continuous application of 2000 hours are shown.
第１表中、本発明品は／１６１〜９に示し、また従来例
はＪ１６１０，１１に示した。In Table 1, the products of the present invention are shown in /161 to 9, and the conventional examples are shown in J1610, 11.
（以下余白）
実施例２
第２図に示すように、上ケース６および下ケース４をと
もにステンレスで構成し、その他は実施例１と同様のも
のを用いて作製した電気二重層コンデンサの単セルを使
用し、第２表に示す電解液組成で初期の内部直流抵抗と
容量を測定した後、７０℃で単セルに２．８ｖの直流電
圧を連続６０００時間印加した後の内部直流抵抗と容量
の変化を示した。(Leaving space below) Example 2 As shown in Fig. 2, a single cell of an electric double layer capacitor was manufactured using the same material as in Example 1, except that the upper case 6 and the lower case 4 were both made of stainless steel. After measuring the initial internal DC resistance and capacity using the electrolyte composition shown in Table 2 using showed a change in
第２表中、本発明品はム１〜９に示し、また従来例はＩ
ｔｈｌｏ 、 １１に示した。In Table 2, the products of the present invention are shown in columns 1 to 9, and the conventional products are shown in columns 1 to 9.
thlo, 11.
（以下余白）
発明の効果
以上のように本発明の電気二重層コンデンサは、アルミ
ニウムもしくはステンレススチール製の陽極部材と、ス
テンレススチール製の陰極部材とにより外装ケースを構
成し、この外装ケースの内部に活性炭素からなる一対の
分極性電極を設け、この一対の分極性電極の間にセパレ
ータを介在させて重ね合わせるとともに、電解液を含浸
させ、この電解液は歩なくともテトラアルキルホスホニ
ウム塩と脂肪族アンモニウム塩もしくは脂環式アンモニ
ウム塩を含む２成分以上の混合系電解質を有機溶媒に溶
解させたものを用いているため、陽極部材を構成する金
属材料に対し陽極酸化皮膜を形成することができるとと
もに、高温下で連続的に電圧印加を行なっても電気特性
が劣化するということはなくカリ、その結果、信頼性の
高いものが得られるものである。(Left below) Effects of the Invention As described above, the electric double layer capacitor of the present invention has an outer case made up of an anode member made of aluminum or stainless steel and a cathode member made of stainless steel. A pair of polarizable electrodes made of activated carbon are provided, and the pair of polarizable electrodes are stacked with a separator interposed between them, and are impregnated with an electrolytic solution. Since a mixed electrolyte containing two or more components containing ammonium salts or alicyclic ammonium salts is dissolved in an organic solvent, it is possible to form an anodic oxide film on the metal material constituting the anode member. Even if a voltage is continuously applied at high temperatures, the electrical characteristics do not deteriorate, and as a result, a highly reliable product can be obtained.
また本発明はこのような混合系電解質を用いた電解液濃
度として各々の電解質のモル濃度の和を０．６〜２Ｍ／
ｌの範囲とし、さらにテトラアルキルホスホニウム塩の
混合モル比率を１０〜５０％の範囲としているため、内
部抵抗が増大したり。Further, in the present invention, the sum of the molar concentrations of each electrolyte is 0.6 to 2M/2 as the electrolyte concentration using such a mixed electrolyte.
Since the mixing molar ratio of the tetraalkylphosphonium salt is in the range of 10 to 50%, the internal resistance increases.
電解質の溶解度が低下して特性劣化を起こすという問題
はなくなるとともに、テトラアルキルホスホニウム塩の
分解によって起こるガス発生やポリマーの生成によるコ
ンデンサ素子の劣化反応も小さくすることができるもの
である。This eliminates the problem of deterioration of characteristics due to a decrease in the solubility of the electrolyte, and also reduces the deterioration reaction of the capacitor element due to gas generation and polymer formation caused by the decomposition of the tetraalkylphosphonium salt.
第１図および第２図は本発明の具体的な実施例を示す電
気二重層コンデンサの半裁断面図である。
１・・・・・・分極性電極、２・・・・・・アルミニウ
ム層、３・・・・・・セパレータ、４・・・・・・下ケ
ース（陽ＩＬｆｆｌｓ材）、６・・・・・・アルミニウ
ム層、６・・・・・・上ケース（陰［部材）、７・・・
・・・ガスケット。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名＄１
１１ 図
１ｇ２図
８−・
−ｍ−
−ｍ−
５−・
−−一
分子ｉ牲電優
アルミニウム層
℃パレータ
下ケース（喝蚤鉗υ
アルミニウム層
よケース（隈蚤ｗ３打）
乃スゲヲト1 and 2 are half-cut sectional views of an electric double layer capacitor showing a specific embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Polarizable electrode, 2...Aluminum layer, 3...Separator, 4...Lower case (positive ILffls material), 6... ... Aluminum layer, 6 ... Upper case (shade [member), 7 ...
···gasket. Name of agent: Patent attorney Shigetaka Awano and 1 other person $1
11 Figure 1g2 Figure 8 -・ -m- -m- 5-・ --- Single molecule I-depleted aluminum layer ℃ Palator lower case (exciting forceps Aluminum layer case (Kuma flea w 3 strokes) Nosugewoto
Claims (5)
極部材と、ステンレススチール製の陰極部材とにより外
装ケースを構成し、この外装ケースの内部に活性炭素か
らなる一対の分極性電極を設け、この一対の分極性電極
の間にセパレータを介在させて重ね合わせるとともに、
電解液を含浸させ、この電解液は少なくともテトラアル
キルホスホニウム塩と脂肪族アンモニウム塩もしくは脂
環式アンモニウム塩を含む２成分以上の混合系電解質を
有機溶媒に溶解させたものを用いることを特徴とする電
気二重層コンデンサ。(1) An exterior case is made up of an anode member made of aluminum or stainless steel and a cathode member made of stainless steel, and a pair of polarizable electrodes made of activated carbon is provided inside this exterior case. In addition to interposing a separator between the electrodes and overlapping them,
Impregnated with an electrolytic solution, this electrolytic solution is characterized in that a mixed electrolyte containing two or more components containing at least a tetraalkylphosphonium salt and an aliphatic ammonium salt or an alicyclic ammonium salt is dissolved in an organic solvent. Electric double layer capacitor.
フッ化ホウ酸であり、かつカチオンはアルキル基の炭素
数が１〜４であることを特徴とす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) Tetraalkylphosphonium salt has an anion of 4
Claim 1, which is fluoroboric acid, and the cation is characterized in that the alkyl group has 1 to 4 carbon atoms.
Electric double layer capacitor described in section.
ウ酸であり、かつカチオンはアルキル基の炭素数が１〜
４であることを特徴とする特許請求の範囲第１項記載の
電気二重層コンデンサ。(3) In the aliphatic ammonium salt, the anion is tetrafluoroboric acid, and the cation has an alkyl group with 1 to 1 carbon atoms.
4. The electric double layer capacitor according to claim 1, characterized in that:
ウ酸であり、その一般式は下に示される（ａ）〜（ｃ）
の構造を持つことを特徴とする特許請求の範囲第１項記
載の電気二重層コンデンサ。 ▲数式、化学式、表等があります▼（ａ）▲数式、化学
式、表等があります▼（ｂ）▲数式、化学式、表等があ
ります▼（ｃ） ただし、Ｒ＿１，Ｒ＿２は炭素数１〜４のアルキル基を
示す。(4) The anion of the alicyclic ammonium salt is tetrafluoroboric acid, and its general formula is shown below (a) to (c)
2. The electric double layer capacitor according to claim 1, which has a structure of: ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (a) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (b) ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (c) However, R_1 and R_2 have 1 to 4 carbon atoms. represents an alkyl group.
のセル濃度の和が０．５〜２Ｍ／ｌの範囲であり、さら
にテトラアルキルホスホニウム塩の混合モル比率が１０
〜５０％の範囲であることを特徴とする特許請求の範囲
第１項記載の電気二重層コンデンサ。(5) The electrolyte concentration using a mixed electrolyte is such that the sum of the cell concentrations of each electrolyte is in the range of 0.5 to 2 M/l, and the mixed molar ratio of tetraalkylphosphonium salt is 10
The electric double layer capacitor according to claim 1, wherein the electric double layer capacitor is in the range of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1062418A JPH02240910A (en) | 1989-03-15 | 1989-03-15 | Electric double-layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1062418A JPH02240910A (en) | 1989-03-15 | 1989-03-15 | Electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02240910A true JPH02240910A (en) | 1990-09-25 |
Family
ID=13199582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1062418A Pending JPH02240910A (en) | 1989-03-15 | 1989-03-15 | Electric double-layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02240910A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005260031A (en) * | 2004-03-12 | 2005-09-22 | Japan Carlit Co Ltd:The | Electrolyte for electric double layer capacitor and electric double layer capacitor |
| JP2005286177A (en) * | 2004-03-30 | 2005-10-13 | 株式会社パワーシステム | Solvent for organic electrolyte of electric double-layer capacitor |
| US7656645B2 (en) | 2004-03-12 | 2010-02-02 | Japan Carlit Co., Ltd. | Electrolytic solution for electric double layer capacitor and electric double layer capacitor |
| US20110170229A1 (en) * | 2008-09-18 | 2011-07-14 | Panasonic Corporation | Capacitor and method for manufacturing same |
-
1989
- 1989-03-15 JP JP1062418A patent/JPH02240910A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005260031A (en) * | 2004-03-12 | 2005-09-22 | Japan Carlit Co Ltd:The | Electrolyte for electric double layer capacitor and electric double layer capacitor |
| US7656645B2 (en) | 2004-03-12 | 2010-02-02 | Japan Carlit Co., Ltd. | Electrolytic solution for electric double layer capacitor and electric double layer capacitor |
| JP2005286177A (en) * | 2004-03-30 | 2005-10-13 | 株式会社パワーシステム | Solvent for organic electrolyte of electric double-layer capacitor |
| US20110170229A1 (en) * | 2008-09-18 | 2011-07-14 | Panasonic Corporation | Capacitor and method for manufacturing same |
| US8705226B2 (en) * | 2008-09-18 | 2014-04-22 | Panasonic Corporation | Capacitor having a characterized electrode and method for manufacturing same |
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