JPH0226009A - Electric double-layer capacitor - Google Patents
Electric double-layer capacitorInfo
- Publication number
- JPH0226009A JPH0226009A JP63175662A JP17566288A JPH0226009A JP H0226009 A JPH0226009 A JP H0226009A JP 63175662 A JP63175662 A JP 63175662A JP 17566288 A JP17566288 A JP 17566288A JP H0226009 A JPH0226009 A JP H0226009A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- aluminum
- case
- collector
- electric double
- 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 18
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 19
- 239000010935 stainless steel Substances 0.000 claims abstract description 19
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003792 electrolyte Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 239000011888 foil Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract description 2
- 238000005096 rolling process Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 description 8
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- -1 etc. Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 3
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- ZMZDMBWJUHKJPS-UHFFFAOYSA-N thiocyanic acid Chemical compound SC#N ZMZDMBWJUHKJPS-UHFFFAOYSA-N 0.000 description 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- LYGJENNIWJXYER-UHFFFAOYSA-N nitromethane Chemical compound C[N+]([O-])=O LYGJENNIWJXYER-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-N triflic acid Chemical compound OS(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-N 0.000 description 1
- 230000004580 weight loss Effects 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)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は電気二重層コンデンサに関する。[Detailed description of the invention] (Industrial application field) The present invention relates to an electric double layer capacitor.
（従来の技術）
通常、電気二重層コンデンサは、分極性電極、セパレー
タ及び集電体からなり電解液を含浸したコンデンサ素子
をケースに収納した構造になっている。(Prior Art) Generally, an electric double layer capacitor has a structure in which a capacitor element made up of polarizable electrodes, a separator, and a current collector and impregnated with an electrolyte is housed in a case.
この場合、ケースを集電体として用いることもある。In this case, the case may be used as a current collector.
（発明が解決しようとする課題）
しかし、集電体の材質にアルミニウムやステンレス等の
金属を用いた場合には、陽極電圧を印加すると、集電体
が一部溶解し、集電体と分極性電極との間に接触不良を
生じる欠点がある。また、チタンやニオブ等の弁作用金
属を用いた場合にも、高電圧で充電すると同様に腐蝕を
生じるため、定格を高くできない欠点がある。(Problem to be solved by the invention) However, when a metal such as aluminum or stainless steel is used as the material of the current collector, when an anode voltage is applied, a part of the current collector melts and separates from the current collector. It has the disadvantage of causing poor contact with the polar electrode. Further, even when a valve metal such as titanium or niobium is used, charging at a high voltage similarly causes corrosion, so there is a drawback that the rating cannot be increased.
本発明の目的は、以上の欠点を改良し、特性の良好な定
格電圧を高くしうる電気二重層コンデンサを提供するも
のである。An object of the present invention is to improve the above-mentioned drawbacks and provide an electric double layer capacitor with good characteristics and a high rated voltage.
（問題点を解決するための手段）
本発明は、上記の目的を達成するために、分極性電極、
セパレータ及び集電体からなり電解液を含浸したコンデ
ンサ素子をケースに収納した電気工ｆｆ１ｌＷコンデン
サにおいて、アルミニウムを１〜１０Ｗ１％含有するス
テンレス材からなる集電体を有することを特徴とする電
気二重層コンデンサを提供するものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides polarizable electrodes,
An electrician ff1lW capacitor in which a capacitor element comprising a separator and a current collector and impregnated with an electrolytic solution is housed in a case, an electric double layer characterized by having a current collector made of stainless steel material containing 1 to 10W1% of aluminum. It provides capacitors.
また、本発明は、分極性電極をセパレータで分離して電
解液を含浸したコンデンサ素子をケースに収納した電気
二重層コンデンサにおいて、少なくとも電解液と接触す
る面がアルミニウムを１〜１０ｗｔ％含有するステンレ
ス材からなるケースを有することを特徴とする電気二重
層コンデンサを提供でるものである。The present invention also provides an electric double layer capacitor in which a polarizable electrode is separated by a separator and a capacitor element impregnated with an electrolyte is housed in a case, in which at least the surface in contact with the electrolyte is made of stainless steel containing 1 to 10 wt% of aluminum. The present invention provides an electric double layer capacitor characterized by having a case made of material.
（作用）
集電体又は少なくとも電解液と接触するケースの表面を
アルミニウムを１〜１０ｗｔ％含有するステンレス材と
することにより、電極電圧を印加しても、集電体やケー
スが容易に溶は出さず、接触不良等を防止できる。(Function) By making the surface of the current collector or at least the case that comes into contact with the electrolyte solution with a stainless steel material containing 1 to 10 wt% of aluminum, the current collector and the case will not easily melt even when an electrode voltage is applied. This prevents contact failure, etc.
（実施例） 以下、本発明を実施例に基づいて説明する。(Example) Hereinafter, the present invention will be explained based on examples.
図において、分極性電極１としては、電解液に電気化学
的に不活性な活性炭や活性炭１ｍｌカーボンブラック等
にフッ素系などの結着剤を混ぜたものを、プレスしてシ
ート状にし、円形に打ち抜いたものとする。In the figure, the polarizable electrode 1 is made by mixing an electrolytic solution with electrochemically inert activated carbon, 1 ml of activated carbon, carbon black, etc., and a binder such as a fluorine-based material, press it into a sheet shape, and shape it into a circular shape. Assume that it has been punched out.
電解液は、有機溶媒系や水溶液系を用いる。有機溶媒系
電解液としては、プロピレンカーボネートやγ−ブチル
ラクトン、１，３−ジオキソラン、アセトニトリル、ジ
メチルホルムアミド、１，２ジメトキシエタン、スルホ
ラン、ニトロメタン等を用いる。この内でも、特にプロ
ピレンカーボネートやγ−ブチルラクトン、アセトニト
リルが好ましく、実質的に無水の状態で使用する。As the electrolytic solution, an organic solvent type or an aqueous solution type is used. As the organic solvent electrolyte, propylene carbonate, γ-butyl lactone, 1,3-dioxolane, acetonitrile, dimethylformamide, 1,2 dimethoxyethane, sulfolane, nitromethane, etc. are used. Among these, propylene carbonate, γ-butyl lactone, and acetonitrile are particularly preferred, and are used in a substantially anhydrous state.
また、溶質には、四フッ化ホウ酸、四フッ化リン酸、チ
オシアン酸、六フッ化タンタル酸、トリフルフォロメタ
ンスルホン酸と、リチウムやカリウム、ナトリウムなど
のアルカリ金属とからなる塩、例えば、ブトラメチルア
ンモニウム四フッ化ホウ酸等を用いる。In addition, solutes include salts consisting of tetrafluoroboric acid, tetrafluorophosphoric acid, thiocyanic acid, hexafluorotantalic acid, trifluoromethanesulfonic acid, and alkali metals such as lithium, potassium, and sodium, for example, Butramethylammonium tetrafluoroboric acid, etc. is used.
セパレータ２には厚さ数１０μ汎のポリプロピレン等の
不織布を用いる。For the separator 2, a nonwoven fabric such as polypropylene having a thickness of several tens of microns is used.
集電体３は、アルミニウムを１〜１０ｗｔ％含有するス
テンレス材を溶解圧延した薄板箔あるいは加工したエキ
スバンドメタルを用い、分極性電極１表面に積層する。The current collector 3 is laminated on the surface of the polarizable electrode 1 using a thin sheet foil made by melting and rolling a stainless steel material containing 1 to 10 wt% of aluminum or a processed expanded metal.
クーース４はステンレス材とし、封口部にゴム状のパツ
キン５を用いる。The Koos 4 is made of stainless steel, and a rubber gasket 5 is used for the sealing part.
なお、集電体としてケースを並ねる場合には、ステンレ
スの母材に、アルミニウムを１〜１０ｗｔ％含むステン
レス板を被覆材として結合したラミネート板を用いる。Note that when cases are arranged as current collectors, a laminate plate is used in which a stainless steel base material is bonded with a stainless steel plate containing 1 to 10 wt % of aluminum as a covering material.
この場合、被覆材は少なくとも電解液と接触する面にラ
ミネートすれば良く、全面にラミネートしても良い。In this case, the covering material may be laminated at least on the surface that comes into contact with the electrolytic solution, or may be laminated on the entire surface.
上記実施例において、！電体３は、ステンレスにアルミ
ニウムを１〜１０ｗｔ％含有した・材質としており、１
ｗｔ％未満であると効果が低く、１ｏｗｔ％をこえると
電気的抵抗が大きくなり、いずれもり了ましくない。In the above example,! The electric body 3 is made of stainless steel containing 1 to 10 wt% of aluminum.
If it is less than 1wt%, the effect will be low, and if it exceeds 1wt%, the electrical resistance will increase, and both are unsatisfactory.
また、ステンレス中の炭素量は０．０：ｌｌｔ％以下で
ある方が良く、これより多いと、粒界腐食が増大するの
で好ましくない。Further, the amount of carbon in stainless steel is preferably 0.0:llt% or less, and if it is more than this, intergranular corrosion will increase, which is not preferable.
次に、本発明実施例に用いる集電体と従来例に用いる集
電体について、電解液中に浸漬してその腐食性を測定し
た。Next, the current collectors used in the examples of the present invention and the current collectors used in the conventional examples were immersed in an electrolytic solution to measure their corrosivity.
集電体として用いる試験片の大きさは、厚さ０．２５ｍ
、面積２ｃｉとし、材質は表の通りとする。 また、電
解液は、プロピレンカーボネートを溶媒とし、テトラメ
チルアンモニウム四フフ化ホウ酸を溶質として１Ｍ加え
た成分とする。The size of the test piece used as a current collector is 0.25 m thick.
, the area is 2ci, and the material is as shown in the table. Further, the electrolytic solution is made of propylene carbonate as a solvent and 1M of tetramethylammonium tetrafluoroboric acid as a solute.
そして電解液の温度を８５℃とし、試験片に３■の電圧
を印加し１０００１１ｒ後の腐食減量を測定する。Then, the temperature of the electrolytic solution was set to 85° C., a voltage of 3 μ was applied to the test piece, and the corrosion loss after 100011 r was measured.
以下余白。Margin below.
図は本発明の実施例の正面断面図を示す。
１・・・分極性電極、 ２・・・セパレータ、３・・・
集電体、 ４・・・ケース。
特許出願人 日立コンデンサ株式会社
実施例１〜実施例４は比較例１〜比較例３に比べてほぼ
１７〜７１％の腐食減量になっている。
特に、実施例１及び実施例２はクロムの聞が少ないため
耐腐食性に優れており、比較例１〜比較例３のほぼ１／
２以下となっている。
（発明の効果）
以上の通り、請求項１の発明によれば集電体を、また請
求項２の発明によれば少なくとも電解液と接触するケー
スの表面をアルミニウムを１〜１０ｗｔ％含むステンレ
ス材としているために、腐食を軽減し、接触不良を改良
できるとともに、耐圧を向上しうる電気二重層コンデン
サが得られる。The figure shows a front sectional view of an embodiment of the invention. 1... Polarizable electrode, 2... Separator, 3...
Current collector, 4... case. Patent Applicant Hitachi Capacitor Co., Ltd. Examples 1 to 4 have a corrosion weight loss of approximately 17 to 71% compared to Comparative Examples 1 to 3. In particular, Examples 1 and 2 have excellent corrosion resistance due to the small amount of chromium, and are approximately 1/1/2 that of Comparative Examples 1 to 3.
It is 2 or less. (Effects of the Invention) As described above, according to the invention of claim 1, the current collector is made of stainless steel containing 1 to 10 wt% of aluminum, and according to the invention of claim 2, at least the surface of the case that comes into contact with the electrolyte is made of stainless steel. Therefore, an electric double layer capacitor can be obtained which can reduce corrosion, improve poor contact, and improve withstand voltage.
Claims (2)
液を含浸したコンデンサ素子をケースに収納した電気二
重層コンデンサにおいて、アルミニウムを１〜１０ｗｔ
％含有するステンレス材からなる集電体を有することを
特徴とする電気二重層コンデンサ。(1) In an electric double layer capacitor in which a capacitor element consisting of a polarizable electrode, a separator, and a current collector is impregnated with an electrolyte and housed in a case, 1 to 10 wt of aluminum is used.
An electric double layer capacitor characterized by having a current collector made of a stainless steel material containing %.
したコンデンサ素子をケースに収納した電気二重層コン
デンサにおいて、少なくとも電解液と接触する面がアル
ミニウムを１〜１０ｗｔ％含有するステンレス材からな
るケースを有することを特徴とする電気二重層コンデン
サ。(2) In an electric double layer capacitor in which a polarizable electrode is separated by a separator and a capacitor element impregnated with an electrolyte is housed in a case, at least the surface in contact with the electrolyte is made of a stainless steel material containing 1 to 10 wt% of aluminum. An electric double layer capacitor characterized by having a case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175662A JPH0226009A (en) | 1988-07-14 | 1988-07-14 | Electric double-layer capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175662A JPH0226009A (en) | 1988-07-14 | 1988-07-14 | Electric double-layer capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226009A true JPH0226009A (en) | 1990-01-29 |
Family
ID=16000027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63175662A Pending JPH0226009A (en) | 1988-07-14 | 1988-07-14 | Electric double-layer capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115378A (en) * | 1990-02-09 | 1992-05-19 | Isuzu Motors Limited | Electric double layer capacitor |
-
1988
- 1988-07-14 JP JP63175662A patent/JPH0226009A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5115378A (en) * | 1990-02-09 | 1992-05-19 | Isuzu Motors Limited | Electric double layer capacitor |
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