JP2000348981A - Electrolyte solution for driving aluminum electrolytic capacitor - Google Patents
Electrolyte solution for driving aluminum electrolytic capacitorInfo
- Publication number
- JP2000348981A JP2000348981A JP11156312A JP15631299A JP2000348981A JP 2000348981 A JP2000348981 A JP 2000348981A JP 11156312 A JP11156312 A JP 11156312A JP 15631299 A JP15631299 A JP 15631299A JP 2000348981 A JP2000348981 A JP 2000348981A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolytic capacitor
- aluminum electrolytic
- driving
- electrolytic solution
- 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
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000003990 capacitor Substances 0.000 title claims abstract description 16
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 150000007524 organic acids Chemical class 0.000 claims abstract description 8
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 7
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 8
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 8
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 8
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 5
- 239000011976 maleic acid Substances 0.000 claims description 5
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 4
- 239000005711 Benzoic acid Substances 0.000 claims description 4
- 239000001361 adipic acid Substances 0.000 claims description 4
- 235000011037 adipic acid Nutrition 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 235000010233 benzoic acid Nutrition 0.000 claims description 4
- 235000019253 formic acid Nutrition 0.000 claims description 4
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 4
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 claims description 4
- 230000006866 deterioration Effects 0.000 abstract description 9
- 239000011888 foil Substances 0.000 abstract description 9
- 230000036571 hydration Effects 0.000 abstract description 6
- 238000006703 hydration reaction Methods 0.000 abstract description 6
- 239000000243 solution Substances 0.000 abstract 1
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 6
- -1 amine salt Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229940021013 electrolyte solution Drugs 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- ZRSKSQHEOZFGLJ-UHFFFAOYSA-N ammonium adipate Chemical compound [NH4+].[NH4+].[O-]C(=O)CCCCC([O-])=O ZRSKSQHEOZFGLJ-UHFFFAOYSA-N 0.000 description 1
- 235000019293 ammonium adipate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical class C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウム電解
コンデンサ駆動用電解液（以下、電解液と称す）に関す
るもので、特に電極箔の水和劣化を防ぎ製品特性の劣化
を防止することを可能とするものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrolytic solution for driving an aluminum electrolytic capacitor (hereinafter, referred to as an electrolytic solution). Is what you do.
【０００２】[0002]
【従来の技術】従来、低圧用アルミニウム電解コンデン
サの電解液としては、γ−ブチロラクトンを主成分とす
る溶媒に、フタル酸やマレイン酸などのカルボン酸類
と、トリエチルアミンなどのアミン塩を主溶質として溶
解した電解液を用いている。2. Description of the Related Art Conventionally, as an electrolytic solution for an aluminum electrolytic capacitor for low pressure, a carboxylic acid such as phthalic acid and maleic acid and an amine salt such as triethylamine as a main solute are dissolved in a solvent containing γ-butyrolactone as a main component. The used electrolyte is used.
【０００３】[0003]
【発明が解決しようとする課題】近年アルミニウム電解
コンデンサは、市場の要求により低インピーダンス化、
小型化、高信頼化が図られ、それに伴い用いられる電解
液には比抵抗が低く、広温度範囲で安定なものが要求さ
れている。また地球環境保護の立場から環境に優しい溶
媒の使用が望まれている。しかしながらγ−ブチロラク
トンを主溶媒とした電解液で得られる比抵抗では、市場
の要求に充分に対応できなくなりつつあり、また環境に
優しいという観点から、γ−ブチロラクトンのような有
機溶媒から、エチレングリコールと水とを混合してなる
溶媒を用いた電解液が注目され始めている。ところが、
エチレングリコールと水とを混合してなる溶媒を用いた
電解液で、市場の要求を満足するためには、水を多量に
混合しなくてはならず、そのため電極箔が水和劣化して
製品特性が悪化するという問題があった。In recent years, aluminum electrolytic capacitors have been reduced in impedance according to market requirements.
The miniaturization and high reliability have been achieved, and accordingly, the electrolyte used has been required to have low specific resistance and to be stable over a wide temperature range. From the standpoint of global environmental protection, the use of environmentally friendly solvents is desired. However, the specific resistance obtained with an electrolytic solution containing γ-butyrolactone as a main solvent is not being able to sufficiently respond to market demands, and from the viewpoint of being environmentally friendly, from an organic solvent such as γ-butyrolactone, ethylene glycol is used. An electrolytic solution using a solvent obtained by mixing water and water is beginning to attract attention. However,
An electrolytic solution that uses a solvent that is a mixture of ethylene glycol and water.To satisfy the market requirements, a large amount of water must be mixed, and as a result, the electrode foil hydrates and deteriorates. There is a problem that characteristics are deteriorated.
【０００４】[0004]
【課題を解決するための手段】本発明は、凝集沈殿効果
を有するポリアクリルアミドに注目し、その特性を電解
液に適用することによって、上記課題の解決を図るもの
である。すなわち、エチレングリコールと水とを混合し
てなる溶媒と、無機酸若しくはその塩および／または有
機酸若しくはその塩と、ポリアクリルアミドからなるこ
とを特徴とするアルミニウム電解コンデンサ駆動用電解
液である。そして、上記ポリアクリルアミドの添加量
が、０．０１〜５ｗｔ％であることを特徴とするアルミ
ニウム電解コンデンサ駆動用電解液である。また、上記
無機酸が、ホウ酸、リン酸、亜リン酸、次亜リン酸、ギ
酸からなり、上記有機酸が、アジピン酸、アゼライン
酸、安息香酸、マレイン酸、フタル酸であることを特徴
とするアルミニウム電解コンデンサ駆動用電解液であ
る。SUMMARY OF THE INVENTION The present invention aims at solving the above-mentioned problems by focusing on polyacrylamide having an agglomeration-precipitation effect and applying its characteristics to an electrolytic solution. That is, the present invention provides an electrolytic solution for driving an aluminum electrolytic capacitor, comprising a solvent obtained by mixing ethylene glycol and water, an inorganic acid or a salt thereof and / or an organic acid or a salt thereof, and polyacrylamide. An electrolytic solution for driving an aluminum electrolytic capacitor, wherein the amount of the polyacrylamide added is 0.01 to 5% by weight. Further, the inorganic acid is composed of boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and formic acid, and the organic acid is adipic acid, azelaic acid, benzoic acid, maleic acid, and phthalic acid. For driving an aluminum electrolytic capacitor.
【０００５】[0005]
【発明の実施の形態】ポリアクリルアミドは微細粒子や
コロイド粒子を取り込んで凝集した後沈殿物を形成す
る。その特性は電解液においても同様に発揮される。多
量の水が添加された電解液は、その電解質であるホウ
酸、有機酸およびその塩を活性化し、アルミニウム電極
箔を水和劣化させ電解液中にアルミニウムイオンを溶出
する。このアルミニウムイオンは、電解液中ではアルミ
ニウムイオンの周りを水分子が囲み水和イオンとなって
おり、一種のコロイド状態を形成している。上記ポリア
クリルアミドの添加は、この様な状態にあるアルミニウ
ムイオンを凝集し、電極箔上に沈殿物を形成させ電極箔
表面を覆うことになる。この様に形成した沈殿物皮膜が
電極箔表面を水和劣化から保護し、製品特性の劣化を防
止できる。BEST MODE FOR CARRYING OUT THE INVENTION Polyacrylamide takes in fine particles and colloidal particles and forms a precipitate after being aggregated. The characteristics are similarly exhibited in the electrolytic solution. The electrolytic solution to which a large amount of water has been added activates boric acid, organic acids and salts thereof, and degrades the aluminum electrode foil by hydration, thereby eluting aluminum ions into the electrolytic solution. In the electrolytic solution, the aluminum ions are hydrated ions surrounded by water molecules around the aluminum ions, and form a kind of colloidal state. The addition of the polyacrylamide aggregates the aluminum ions in such a state, forms a precipitate on the electrode foil, and covers the electrode foil surface. The precipitate film formed in this way protects the electrode foil surface from hydration deterioration and prevents deterioration of product characteristics.
【０００６】[0006]
【実施例】以下、実施例の具体的内容について説明す
る。分子量１×１０７のポリアクリルアミドを使用し、
表１の組成で電解液を調合し、これらの電解液を、定格
６．３ＷＶ、１０００μＦのアルミニウム電解コンデン
サを各１００個作製し、１０５℃・２０００時間高温定
格印加負荷試験に供した結果を表２に示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS The concrete contents of the embodiments will be described below. Using polyacrylamide having a molecular weight of 1 × 10 7 ,
Electrolyte solutions were prepared according to the composition shown in Table 1, and these electrolyte solutions were subjected to a high-temperature rated load test at 105 ° C. for 2,000 hours at a temperature of 6.3 WV and 1000 μF of 100 aluminum electrolytic capacitors. It is shown in FIG.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【表２】 [Table 2]
【０００９】ポリアクリルアミドを添加していない従来
例は、電極箔水和劣化による発熱及び水素ガス発生によ
って１２５０時間で防爆弁が作動した。また、ポリアク
リルアミドを０．００２ｗｔ％添加した比較例１では、
電極箔水和劣化による水素ガスによって外観異常を起こ
し、０．００５ｗｔ％添加した比較例２では外観異常は
発生しなかったが、容量変化率が２０％を超え充分な効
果が得られていない。そして、２０ｗｔ％添加した比較
例３では完全に溶解しなかった。しかし、０．０１〜５
ｗｔ％添加した実施例１〜７は、いずれも外観異常の発
生がなく製品特性の変化も抑えられている。In the conventional example in which polyacrylamide was not added, the explosion-proof valve was activated in 1250 hours due to heat generation due to electrode foil hydration deterioration and generation of hydrogen gas. In Comparative Example 1 in which 0.002 wt% of polyacrylamide was added,
The appearance abnormality was caused by the hydrogen gas due to the electrode foil hydration deterioration, and the appearance abnormality did not occur in Comparative Example 2 in which 0.005 wt% was added, but the capacity change rate exceeded 20%, and a sufficient effect was not obtained. Comparative Example 3 in which 20 wt% was added did not completely dissolve. However, 0.01-5
In each of Examples 1 to 7 in which wt% was added, appearance abnormality did not occur and change in product characteristics was suppressed.
【００１０】実施例では溶質としてアジピン酸二アンモ
ニウムを使用したが、ホウ酸、リン酸、亜リン酸、次亜
リン酸、ギ酸、アジピン酸、アゼライン酸、安息香酸、
マレイン酸、フタル酸と、それらの塩としてアンモニウ
ム塩、アミン塩、イミダゾリニウム塩等を１種または複
数組合せて使用しても、実施例と同等のポリアクリルア
ミドによる効果が認められた。In the examples, diammonium adipate was used as a solute, but boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, formic acid, adipic acid, azelaic acid, benzoic acid,
Even when maleic acid, phthalic acid, and ammonium salts, amine salts, imidazolinium salts, and the like as salts thereof were used alone or in combination, a polyacrylamide effect equivalent to that of the examples was observed.
【００１１】[0011]
【発明の効果】以上の如く、ポリアクリルアミドを添加
した電解液は、電極箔の水和劣化を防ぐことで製品特性
の悪化を防止することが可能であり、工業的価値大なる
ものである。As described above, the electrolytic solution to which polyacrylamide is added can prevent the deterioration of the product characteristics by preventing the hydration deterioration of the electrode foil, and is of great industrial value.
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年３月１４日（２０００．３．１
４）[Submission Date] March 14, 2000 (200.3.1)
4)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００４[Correction target item name] 0004
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００４】[0004]
【課題を解決するための手段】本発明は、凝集沈殿効果
を有するポリアクリルアミドに注目し、その特性を電解
液に適用することによって、上記課題の解決を図るもの
である。すなわち、エチレングリコールと水とを混合し
てなる溶媒と、無機酸若しくはその塩および／または有
機酸若しくはその塩と、０．０１〜５ｗｔ％のポリアク
リルアミドとからなることを特徴とするアルミニウム電
解コンデンサ駆動用電解液である。また、上記無機酸
が、ホウ酸、リン酸、亜リン酸、次亜リン酸からなり、
上記有機酸が、ギ酸、アジピン酸、アゼライン酸、安息
香酸、マレイン酸、フタル酸であることを特徴とするア
ルミニウム電解コンデンサ駆動用電解液である。SUMMARY OF THE INVENTION The present invention aims at solving the above-mentioned problems by focusing on polyacrylamide having an aggregation-precipitation effect and applying its characteristics to an electrolytic solution. That is, an aluminum electrolytic capacitor for a solvent obtained by mixing ethylene glycol and water, an inorganic acid or a salt thereof and / or or organic acids and their salts, characterized by consisting of 0.01-5% polyacrylamide It is a driving electrolyte. Further, the inorganic acid comprises boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid,
An electrolytic solution for driving an aluminum electrolytic capacitor, wherein the organic acid is formic acid, adipic acid, azelaic acid, benzoic acid, maleic acid, or phthalic acid.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長浦 伸二 京都府京都市中京区御池通烏丸東入一筋目 仲保利町191番地の４ 上原ビル３階 ニ チコン株式会社内 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinji Nagaura, Nichicon Co., Ltd.
Claims (3)
る溶媒と、無機酸若しくはその塩および／または有機酸
若しくはその塩と、ポリアクリルアミドからなることを
特徴とするアルミニウム電解コンデンサ駆動用電解液。1. An electrolytic solution for driving an aluminum electrolytic capacitor, comprising a solvent obtained by mixing ethylene glycol and water, an inorganic acid or a salt thereof and / or an organic acid or a salt thereof, and polyacrylamide.
０．０１〜５ｗｔ％であることを特徴とする請求項１記
載のアルミニウム電解コンデンサ駆動用電解液。2. The amount of the polyacrylamide added is:
2. The electrolytic solution for driving an aluminum electrolytic capacitor according to claim 1, wherein the amount is 0.01 to 5 wt%.
酸、次亜リン酸、ギ酸からなり、上記有機酸が、アジピ
ン酸、アゼライン酸、安息香酸、マレイン酸、フタル酸
であることを特徴とする請求項１記載のアルミニウム電
解コンデンサ駆動用電解液。3. The inorganic acid comprises boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and formic acid, and the organic acid is adipic acid, azelaic acid, benzoic acid, maleic acid, and phthalic acid. The electrolytic solution for driving an aluminum electrolytic capacitor according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11156312A JP2000348981A (en) | 1999-06-03 | 1999-06-03 | Electrolyte solution for driving aluminum electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11156312A JP2000348981A (en) | 1999-06-03 | 1999-06-03 | Electrolyte solution for driving aluminum electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000348981A true JP2000348981A (en) | 2000-12-15 |
Family
ID=15625058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11156312A Pending JP2000348981A (en) | 1999-06-03 | 1999-06-03 | Electrolyte solution for driving aluminum electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000348981A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001291643A (en) * | 2000-04-05 | 2001-10-19 | Rubycon Corp | Electrolyte solution for driving electrolytic capacitor, and electrolytic capacitor using the same |
| JP2002270473A (en) * | 2001-01-05 | 2002-09-20 | Nippon Chemicon Corp | Electrolytic capacitor and electrolytic solution therefor |
| JP2003109855A (en) * | 2001-09-28 | 2003-04-11 | Nippon Chemicon Corp | Electrolyte for electrolytic capacitor |
| JP2004200718A (en) * | 2004-03-08 | 2004-07-15 | Rubycon Corp | Electrolyte for driving electrolytic capacitor and electrolytic capacitor using it |
-
1999
- 1999-06-03 JP JP11156312A patent/JP2000348981A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001291643A (en) * | 2000-04-05 | 2001-10-19 | Rubycon Corp | Electrolyte solution for driving electrolytic capacitor, and electrolytic capacitor using the same |
| JP2002270473A (en) * | 2001-01-05 | 2002-09-20 | Nippon Chemicon Corp | Electrolytic capacitor and electrolytic solution therefor |
| JP2003109855A (en) * | 2001-09-28 | 2003-04-11 | Nippon Chemicon Corp | Electrolyte for electrolytic capacitor |
| JP2004200718A (en) * | 2004-03-08 | 2004-07-15 | Rubycon Corp | Electrolyte for driving electrolytic capacitor and electrolytic capacitor using it |
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