JPH01227420A - Electrolyte for driving electrolytic capacitor - Google Patents
Electrolyte for driving electrolytic capacitorInfo
- Publication number
- JPH01227420A JPH01227420A JP5458688A JP5458688A JPH01227420A JP H01227420 A JPH01227420 A JP H01227420A JP 5458688 A JP5458688 A JP 5458688A JP 5458688 A JP5458688 A JP 5458688A JP H01227420 A JPH01227420 A JP H01227420A
- Authority
- JP
- Japan
- Prior art keywords
- ammonium salt
- electrolyte
- acid
- saccharides
- dissolved
- 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 9
- 239000003792 electrolyte Substances 0.000 title abstract description 9
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004327 boric acid Substances 0.000 claims abstract description 8
- 150000001720 carbohydrates Chemical class 0.000 claims abstract description 8
- 239000008151 electrolyte solution Substances 0.000 claims description 16
- 239000000203 mixture Substances 0.000 abstract description 7
- 150000007524 organic acids Chemical class 0.000 abstract description 7
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002904 solvent Substances 0.000 abstract description 6
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 abstract description 4
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 abstract description 4
- 230000007423 decrease Effects 0.000 abstract description 4
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical class CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 abstract description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 abstract description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 abstract description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract description 3
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 abstract description 3
- 239000011976 maleic acid Substances 0.000 abstract description 3
- 229960002920 sorbitol Drugs 0.000 abstract description 3
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical class CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 abstract description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 abstract description 3
- 235000010355 mannitol Nutrition 0.000 abstract description 2
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical class C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 abstract description 2
- 150000003863 ammonium salts Chemical class 0.000 abstract 3
- FBPFZTCFMRRESA-ZXXMMSQZSA-N D-iditol Chemical compound OC[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-ZXXMMSQZSA-N 0.000 abstract 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 235000000346 sugar Nutrition 0.000 description 3
- 150000008163 sugars Chemical class 0.000 description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 organic acid quaternary ammonium salt Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
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、電解コンデンサの駆動用電解液（以下電解液
という）に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electrolytic solution for driving an electrolytic capacitor (hereinafter referred to as electrolytic solution).
従来の技術
従来、電解コンデンサの電解液としては、エチレングリ
コールを主体とした溶媒にアジピン酸またはその塩を溶
解した電解液が多用されている。2. Description of the Related Art Conventionally, an electrolytic solution in which adipic acid or a salt thereof is dissolved in a solvent mainly composed of ethylene glycol has been frequently used as an electrolytic solution for electrolytic capacitors.
発明が解決しようとする問題点
近年、アルミニウム電解コンデンサの小形化、高信頼化
に伴い、電解液としては比抵抗が低く、高温度で安定な
電解液が要求されている。比抵抗を低（するために、従
来電解液の水分の配合比を増大したり、あるいは溶質量
を増大したものがあるが、水の配合比を増大すると高温
度雰囲気下における信頼性が著しく低下する。Problems to be Solved by the Invention In recent years, as aluminum electrolytic capacitors have become smaller and more reliable, there has been a demand for electrolytic solutions that have low specific resistance and are stable at high temperatures. In order to lower the resistivity, conventional electrolytes have been made by increasing the water content or increasing the amount of solute, but increasing the water content significantly reduces reliability in high-temperature environments. do.
また、溶Ｗｌを増大させると電解液の火花電圧が佃下し
、コンデンサがショートするなどの問題があった。Furthermore, when the amount of dissolved Wl is increased, the spark voltage of the electrolyte decreases, causing problems such as short-circuiting of the capacitor.
゛問題点を解決するための手段
本発明は、上述の問題点を解決するため、Ｔ−ブチロラ
クトンを主溶媒とし、有機酸の４級アンモニウム塩を５
重量％以上溶解してなる電解液に、硼酸０．１重量％以
上と、糖類０．１重量％以上とを添加して溶解したこと
を特徴とする電解コンデンサの電解液である。゛Means for solving the problems In order to solve the above-mentioned problems, the present invention uses T-butyrolactone as the main solvent and a quaternary ammonium salt of an organic acid.
This electrolyte solution for an electrolytic capacitor is characterized in that 0.1% by weight or more of boric acid and 0.1% by weight or more of saccharides are added and dissolved in the electrolytic solution obtained by dissolving 0.1% by weight or more of boric acid.
上記有機酸は、・マレイン酸、フタル酸のうち１種また
は２種の混合物であり、４級アンモニウム塩はテトラエ
チルアンモニウム塩、テトラエチルアンモニウム塩、テ
トラブチルアンモニウム塩のうち１”種または２種以上
の混合物である。さらに上記糖類は、Ｄ−ソルビット、
Ｄ−マンニット、Ｄ−イジツトのうち１種または２種以
上である。The above organic acid is one or a mixture of two of maleic acid and phthalic acid, and the quaternary ammonium salt is one or more of tetraethylammonium salt, tetraethylammonium salt, and tetrabutylammonium salt. The saccharide is a mixture. Furthermore, the saccharide is D-sorbitol,
One or more types of D-mannitol and D-idosite.
作用
本発明に係る電解液は、溶質の溶解度が著しく高（、比
抵抗が極めて低（なる。また、硼酸と糖類を加えること
により溶質量の増大による火花電圧の低下を防止でき、
広い電圧範囲で安定した特性が得られる。Function The electrolytic solution according to the present invention has extremely high solubility of the solute and extremely low resistivity.Additionally, by adding boric acid and sugars, it is possible to prevent a decrease in spark voltage due to an increase in the amount of solute.
Stable characteristics can be obtained over a wide voltage range.
実施例 以下、本発明の具体的実施例について説明する。Example Hereinafter, specific examples of the present invention will be described.
第１表６二本発明の実施例と従来例について、電解液組
成および電解液の３０℃における比抵抗の比較を示す。Table 1-6 shows a comparison of the electrolytic solution composition and the specific resistance of the electrolytic solution at 30° C. for the embodiment of the present invention and the conventional example.
第１表中電解液試料記号Ａは従来例、Ｂは比較例、Ｃ，
Ｄは本発明例である。In Table 1, electrolyte sample symbol A is a conventional example, B is a comparative example, C,
D is an example of the present invention.
第１表らか明らかなように、本発明に係る電解液は、従
来の電解液に比べ低い比抵抗値を有する。As is clear from Table 1, the electrolytic solution according to the present invention has a lower specific resistance value than the conventional electrolytic solution.
第１表
第１表に示す電解液を用いて定格６３Ｖ、２２μＦのア
ルミニウム電解コンデンサを製作し、１０５℃２０００
時間の高温負荷試験を行った結果を第２表に示す。Table 1 An aluminum electrolytic capacitor with a rating of 63V and 22μF was manufactured using the electrolyte shown in Table 1, and
Table 2 shows the results of the high temperature load test for hours.
漏れ電流は、定格電圧印加１分後の値を示す。Leakage current indicates the value 1 minute after application of the rated voltage.
各々の特性値は、試料数２０個の平均値である。Each characteristic value is an average value of 20 samples.
第２表から判るように、本発明に係る電解液試料記号Ｃ
，Ｄを用いた電解コンデンサは、エージング過程でのシ
ョートもなく、高温負荷試験においても容量変化率や損
失変化が極めて小さく、優れた耐久性を与える。As can be seen from Table 2, the electrolyte sample symbol C according to the present invention
, D, there is no short circuit during the aging process, and even in high-temperature load tests, the capacitance change rate and loss change are extremely small, providing excellent durability.
また、有機酸としてマレイン酸、フタル酸、４級アンモ
ニウム塩としてテトラメチルアンモニウム、テトラエチ
ルアンモニウム、テトラブチルアンモニウム、糖類とし
てＤ−ソルビット、Ｄ−マンニット、Ｄ−イジツトの種
々の組合せについて組成比を変え実験を行ったが、第１
表の実施例と同様な扱い方において同等の特性を示した
。なお、有機酸の４級アンモニウム塩の添加量は、５重
量％以上が好ましく、５重量％未満では比抵抗を十分に
低下させることができない。なお、添加量が飽和濃度を
超えることは好ましくない。In addition, the composition ratios were varied for various combinations of maleic acid and phthalic acid as organic acids, tetramethylammonium, tetraethylammonium, and tetrabutylammonium as quaternary ammonium salts, and D-sorbitol, D-mannite, and D-idis as sugars. I conducted an experiment, but the first
When treated in the same manner as the examples in the table, they showed equivalent characteristics. Note that the amount of the quaternary ammonium salt of an organic acid added is preferably 5% by weight or more, and if it is less than 5% by weight, the specific resistance cannot be sufficiently lowered. Note that it is not preferable that the amount added exceeds the saturation concentration.
また、硼酸と糖類の添加量は、それぞれ０．１重量％以
上が好ましく、０．１重量％未満では電解液の火花電圧
が低下する。なお、添加量が析出を生ずる濃度以上にな
ることは好ましくない。Further, the amounts of boric acid and saccharides added are preferably 0.1% by weight or more, respectively, and if they are less than 0.1% by weight, the spark voltage of the electrolytic solution decreases. Note that it is not preferable that the amount added exceeds the concentration that causes precipitation.
第 ２ 表
発明の効果
以上の結果から明らかなように、γ−ブチロラクトンを
主溶媒とし、溶媒に有機酸４級アンモニウム塩を溶解し
てなる電解液に、硼酸と糖類を添加して溶解したことを
特徴とする電解コンデンサの電解液は、高温度で優れた
耐久性を示し、工業的ならびに実用的価値の大なるもの
である。Table 2 Effects of the Invention As is clear from the above results, boric acid and sugars were added and dissolved in an electrolytic solution prepared by using γ-butyrolactone as a main solvent and dissolving an organic acid quaternary ammonium salt in the solvent. The electrolytic solution for electrolytic capacitors, which is characterized by the following characteristics, exhibits excellent durability at high temperatures and is of great industrial and practical value.
Claims (1)
ニウム塩を５重量％以上溶解してなる電解液に、硼酸０
．１重量％以上と、糖類０．１重量％以上とを添加して
溶解したことを特徴とする電解コンデンサの駆動用電解
液。Boric acid 0.0
．． An electrolytic solution for driving an electrolytic capacitor, characterized in that 1% by weight or more and 0.1% by weight or more of saccharides are added and dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5458688A JPH01227420A (en) | 1988-03-08 | 1988-03-08 | Electrolyte for driving electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5458688A JPH01227420A (en) | 1988-03-08 | 1988-03-08 | Electrolyte for driving electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01227420A true JPH01227420A (en) | 1989-09-11 |
Family
ID=12974818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5458688A Pending JPH01227420A (en) | 1988-03-08 | 1988-03-08 | Electrolyte for driving electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01227420A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63261824A (en) * | 1987-04-20 | 1988-10-28 | 松下電器産業株式会社 | Electrolyte for driving electrolytic capacitor |
| JPH01114017A (en) * | 1987-10-28 | 1989-05-02 | Matsushita Electric Ind Co Ltd | Electrolyte for driving electrolytic capacitor |
-
1988
- 1988-03-08 JP JP5458688A patent/JPH01227420A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63261824A (en) * | 1987-04-20 | 1988-10-28 | 松下電器産業株式会社 | Electrolyte for driving electrolytic capacitor |
| JPH01114017A (en) * | 1987-10-28 | 1989-05-02 | Matsushita Electric Ind Co Ltd | Electrolyte for driving electrolytic capacitor |
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