JPS637613A - Electrolyte for electrolytic capacitor - Google Patents
Electrolyte for electrolytic capacitorInfo
- Publication number
- JPS637613A JPS637613A JP15223986A JP15223986A JPS637613A JP S637613 A JPS637613 A JP S637613A JP 15223986 A JP15223986 A JP 15223986A JP 15223986 A JP15223986 A JP 15223986A JP S637613 A JPS637613 A JP S637613A
- Authority
- JP
- Japan
- Prior art keywords
- electrolyte
- acid
- electrolytic capacitor
- electrolytic
- decanedicarboxylic acid
- 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
- 239000003792 electrolyte Substances 0.000 title description 11
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims description 7
- 150000008575 L-amino acids Chemical class 0.000 claims description 6
- 239000008151 electrolyte solution Substances 0.000 claims description 6
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- WHUUTDBJXJRKMK-UHFFFAOYSA-N Glutamic acid Natural products OC(=O)C(N)CCC(O)=O WHUUTDBJXJRKMK-UHFFFAOYSA-N 0.000 claims description 2
- 239000004471 Glycine Substances 0.000 claims description 2
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 claims description 2
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 claims description 2
- WHUUTDBJXJRKMK-VKHMYHEASA-N L-glutamic acid Chemical compound OC(=O)[C@@H](N)CCC(O)=O WHUUTDBJXJRKMK-VKHMYHEASA-N 0.000 claims description 2
- 235000004279 alanine Nutrition 0.000 claims description 2
- 235000013922 glutamic acid Nutrition 0.000 claims description 2
- 239000004220 glutamic acid Substances 0.000 claims description 2
- CKLJMWTZIZZHCS-UHFFFAOYSA-N D-OH-Asp Natural products OC(=O)C(N)CC(O)=O CKLJMWTZIZZHCS-UHFFFAOYSA-N 0.000 claims 1
- CKLJMWTZIZZHCS-UWTATZPHSA-N L-Aspartic acid Natural products OC(=O)[C@H](N)CC(O)=O CKLJMWTZIZZHCS-UWTATZPHSA-N 0.000 claims 1
- 229960005261 aspartic acid Drugs 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009918 complex formation Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000010407 anodic oxide Substances 0.000 description 1
- 235000003704 aspartic acid Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
- Primary Cells (AREA)
- Glass Compositions (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
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駈動用電解液に関するもので、
同電解液の比抵抗を著しく低−トさせることによっ゛C
電解コンデンサの損失角の正接および高周波特性を改善
し、しかも静電容量の変化および漏れ電流の増加を抑え
ることの可能な高温度で長、L?命かつ信頼性の高い電
解コンデンサをW 4j’:するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electrolytic solution for electrolytic capacitors,
By significantly lowering the specific resistance of the electrolyte,
Long, L? This is a life-saving and highly reliable electrolytic capacitor.
[従来の技術と間屈点〕
従来、高温度用の電解コンデンサには比較的分子量の大
きい有機酸あるいはその塩を溶質とする打機酸系電解液
が使用および検討されている。[Prior art and bending point] Conventionally, permeate acid-based electrolytes containing relatively large molecular weight organic acids or their salts as solutes have been used and studied for high-temperature electrolytic capacitors.
中高圧用の有機酸系電解液の溶質としては1゜6−デカ
ンジカルボンg<特公昭60−13293号r電解コン
デンサ駆動用電解液コ)が公知であるか、この1.6−
デカンジカルボン酸を含む電解液を使用した電解コンデ
ンサは溶質そのものがコンデンサ素子を形成するアルミ
ニウム箔と反応し、錯体形成するために初期静電容量が
低く、また高温負荷試験や高温無負荷試験において静電
容量の極端な減少および著しい漏ね電流の増大が見られ
、より性能の高い電解コンデンサの要求には応えられな
いものであった。このような理由から添加剤とし゛〔1
,6−デカンジカルボン酸にマレイン酸(特開昭58−
92208号r電解コンデンサ駆動用電解液」)または
クエン酸(特開昭59−219920号?電解コンデン
サ駆動用電液液」)を添加したものが提案されているが
、それでもまだ熱安定性に劣るなどの欠点を訂している
ものである。As a solute of an organic acid-based electrolyte for medium and high pressures, 1.6-decane dicarboxylic acid (Japanese Patent Publication No. 13293/1983) is known, or this 1.6-
In electrolytic capacitors that use an electrolyte containing decanedicarboxylic acid, the solute itself reacts with the aluminum foil that forms the capacitor element and forms a complex, resulting in a low initial capacitance. An extreme decrease in capacitance and a significant increase in leakage current were observed, and the demand for higher performance electrolytic capacitors could not be met. For this reason, it is used as an additive.
, 6-decanedicarboxylic acid and maleic acid (JP-A-58-
No. 92208r electrolytic solution for driving electrolytic capacitors") or citric acid (JP-A No. 59-219920? Electrolytic solution for driving electrolytic capacitors") have been proposed, but they still have poor thermal stability. It corrects the following shortcomings.
[発明の改良点と概要]
しかるに、本発明は上述のような欠点を除去し得るもの
で、具体的には1.6−デカンジカルボン酸に添加剤と
してL−アミノ酸類を添加することによって1.6−デ
カンジカルボン酸とアルミニウム箔との錯体形成を防止
して電解コンデンサの静電8川変化や漏れ電流の増大を
抑え、さらに電解液の比抵抗を下げて、損失角の正接や
高周波でのインピーダンスを小さくすることにより、よ
り高性能で信頼性の高い′電解コンデンサを提供するも
のである。本発明においてL−アミノ酸類としてはグリ
シン、し−アスパラギン酸、アラニンおよびグルタミン
酸を挙げることができる。[Improvements and Summary of the Invention] However, the present invention can eliminate the above-mentioned drawbacks, and specifically, by adding L-amino acids as an additive to 1,6-decanedicarboxylic acid. .6-Preventing complex formation between decanedicarboxylic acid and aluminum foil to suppress electrostatic capacitor changes and increases in leakage current, and further lowering the specific resistance of the electrolyte to reduce loss angle tangent and high frequencies. By reducing the impedance of the capacitor, we provide an electrolytic capacitor with higher performance and reliability. In the present invention, examples of L-amino acids include glycine, aspartic acid, alanine and glutamic acid.
[実施例]
次に、上述の1.6−デカンジカルボン酸あるいはその
塩を主体とし、これを打機極性溶媒に溶解し、L−アミ
ノ酸類を添加した本発明に係る電解液の実施例を従来例
と共に第1表に示す。lE解液液組成wt%、比抵抗(
Ω・cm)は液温か20℃のものである。また、火花電
圧は85℃のものである。[Example] Next, an example of an electrolytic solution according to the present invention, which mainly consists of the above-mentioned 1,6-decanedicarboxylic acid or its salt, is dissolved in a batter polar solvent, and L-amino acids are added. This is shown in Table 1 along with conventional examples. lE solution composition wt%, specific resistance (
Ωcm) is at the liquid temperature of 20°C. Further, the spark voltage was at 85°C.
第1表 電解液組成例
次に、第1表に示した電解液のうち、従来例1、従来例
2.実施例3および実施例4の電解液を使用した′電解
コンデンサ(定格400■・10μF)の各20個につ
いての温度105℃、定格電圧印加1000時間の高温
負荷試験の結果を第2表に示す。また、電解コンデンサ
(定格400v・220μF)についての高温負荷試験
の(105℃、1000時間)の結果を第3表に示す。Table 1 Examples of Electrolyte Composition Next, among the electrolytes shown in Table 1, Conventional Example 1, Conventional Example 2. Table 2 shows the results of a high-temperature load test at a temperature of 105° C. and application of the rated voltage for 1000 hours on 20 electrolytic capacitors (rated at 400 μF and 10 μF) using the electrolytes of Examples 3 and 4. . Further, Table 3 shows the results of a high temperature load test (105° C., 1000 hours) on an electrolytic capacitor (rated 400 V, 220 μF).
(初期および試験後の特性の8値は電解コンデンサ42
0個の平均値である。)
L発明の効果]
第2表および第3表から分かるように従来例1および従
来例2では初期容量値が定格値に対して約5%ti後低
く、さらに試験後においてもその変化率が大きい。また
、第3表から分かるように従来例1および従来例2では
漏れ電流が約30倍にもなっている。(8 values of initial and post-test characteristics are for electrolytic capacitors 42
This is the average value of 0. ) L Effect of the Invention] As can be seen from Tables 2 and 3, in Conventional Examples 1 and 2, the initial capacitance value was low after about 5%ti of the rated value, and the rate of change was even after the test. big. Further, as can be seen from Table 3, the leakage current in Conventional Example 1 and Conventional Example 2 is approximately 30 times greater.
第2表および第3表によって示された従来例のこのよう
な現象は航述したように駆動用電解液中の1.6−デカ
ンジカルボン酸がコンデンサ素子を形成するアルミニウ
ム箔と反応し、その表面積を著しく低下するのを防ぐ効
果が充分に得られずに、静電容量が減少するものであり
、また漏れ電流の増加は1.6−デカンジカルボン酸が
誘電体であるアルミニウム陽極酸化膜と反応して不安定
なアルミニウム語体服を形成し、こわが高温下において
駆動用電解液中に溶解″′4−るために漏れ電流が増大
するものである。This phenomenon in the conventional example shown in Tables 2 and 3 is caused by the reaction of 1,6-decanedicarboxylic acid in the driving electrolyte with the aluminum foil forming the capacitor element, as described above. The capacitance decreases without being sufficiently effective in preventing a significant decrease in surface area, and the increase in leakage current is due to the fact that 1,6-decanedicarboxylic acid is the dielectric material of the aluminum anodic oxide film. The reaction results in the formation of an unstable aluminum shell, and the stiffness dissolves into the driving electrolyte at high temperatures, increasing leakage current.
一方、本発明は1.6−デカンジカルボン酸あるいはそ
の塩を主体とした溶質にL−アミノ酸類を添加すること
により、1.6−デカンジカルボン酸の錯体形成を抑制
するものである。また、比抵抗を下げることによって損
失角の正接や高周波でのインピーダンスを低く抑えるこ
とができるものである。On the other hand, the present invention suppresses complex formation of 1,6-decanedicarboxylic acid by adding L-amino acids to a solute mainly composed of 1,6-decanedicarboxylic acid or a salt thereof. Furthermore, by lowering the specific resistance, the tangent of the loss angle and the impedance at high frequencies can be kept low.
Claims (1)
する電解コンデンサ駆動用電解液において、L−アミノ
酸類を添加したことを特徴とする電解コンデンサ駆動用
電解液。 [2]特許請求の範囲[1]において、L−アミノ酸類
はグリシン、L−アスパラギン酸、アラニンまたはグル
タミン酸のいずれかからなることを特徴とした電解コン
デンサ駆動用電解液。[Scope of Claims] [1] An electrolytic solution for driving an electrolytic capacitor containing 1,6-decanedicarboxylic acid or a salt thereof, characterized in that an L-amino acid is added thereto. [2] The electrolytic solution for driving an electrolytic capacitor according to claim [1], wherein the L-amino acids are any one of glycine, L-aspartic acid, alanine, and glutamic acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15223986A JPS637613A (en) | 1986-06-28 | 1986-06-28 | Electrolyte for electrolytic capacitor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15223986A JPS637613A (en) | 1986-06-28 | 1986-06-28 | Electrolyte for electrolytic capacitor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS637613A true JPS637613A (en) | 1988-01-13 |
Family
ID=15536129
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15223986A Pending JPS637613A (en) | 1986-06-28 | 1986-06-28 | Electrolyte for electrolytic capacitor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS637613A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0410513A (en) * | 1990-04-27 | 1992-01-14 | Hitachi Aic Inc | Electrolyte for electrolytic capacitor |
-
1986
- 1986-06-28 JP JP15223986A patent/JPS637613A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0410513A (en) * | 1990-04-27 | 1992-01-14 | Hitachi Aic Inc | Electrolyte for electrolytic capacitor |
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