JPH03225909A - Electrolyte for electrolytic capacitor - Google Patents
Electrolyte for electrolytic capacitorInfo
- Publication number
- JPH03225909A JPH03225909A JP2063790A JP2063790A JPH03225909A JP H03225909 A JPH03225909 A JP H03225909A JP 2063790 A JP2063790 A JP 2063790A JP 2063790 A JP2063790 A JP 2063790A JP H03225909 A JPH03225909 A JP H03225909A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolyte
- electrolytic capacitor
- disodium
- decandicarboxylic
- 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.)
- Granted
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 19
- 239000003792 electrolyte Substances 0.000 title claims abstract description 8
- QPXRAGHWHMEVOR-UHFFFAOYSA-L disodium;phenyl phosphate;hydrate Chemical compound O.[Na+].[Na+].[O-]P([O-])(=O)OC1=CC=CC=C1 QPXRAGHWHMEVOR-UHFFFAOYSA-L 0.000 claims abstract description 5
- 150000005846 sugar alcohols Polymers 0.000 claims abstract description 5
- 150000003839 salts Chemical class 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 9
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052782 aluminium Inorganic materials 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000011888 foil Substances 0.000 abstract description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- GRJDUUGBTBXOHL-UHFFFAOYSA-N phenyl dihydrogen phosphate;sodium Chemical compound [Na].[Na].OP(O)(=O)OC1=CC=CC=C1 GRJDUUGBTBXOHL-UHFFFAOYSA-N 0.000 abstract 1
- QHUYRPMLVQJNGS-UHFFFAOYSA-N phenyl dihydrogen phosphate;sodium;hydrate Chemical compound O.[Na].[Na].OP(O)(=O)OC1=CC=CC=C1 QHUYRPMLVQJNGS-UHFFFAOYSA-N 0.000 abstract 1
- RSSDWSPWORHGIE-UHFFFAOYSA-N $l^{1}-phosphanylbenzene Chemical compound [P]C1=CC=CC=C1 RSSDWSPWORHGIE-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 for example Chemical compound 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
- 239000000203 mixture Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000000126 substance 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
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Electric Double-Layer Capacitors Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
（従来の技術）
本発明は高温度で使用できる電解コンデンサ用電解液に
関する。DETAILED DESCRIPTION OF THE INVENTION (Prior Art) The present invention relates to an electrolytic solution for electrolytic capacitors that can be used at high temperatures.
（従来の技術）
電解コンデンサ用電解液は、高温度領域においても使用
できるように、例えば比較的分子量の大きい有機酸ある
いはその塩を溶質としている。有機酸系の溶質としては
特公昭６０−１３２９３号の通り１．６−デカンジカル
ボン酸が公知である。(Prior Art) An electrolytic solution for an electrolytic capacitor uses, for example, an organic acid having a relatively large molecular weight or a salt thereof as a solute so that it can be used even in a high temperature range. As an organic acid solute, 1,6-decanedicarboxylic acid is known as disclosed in Japanese Patent Publication No. 60-13293.
（１）
（発明が解決しようとする課題）
しかし、１．６−デカンジカルボン酸を溶質とする電解
液は、１．６−デカンジカルボン酸がコンデンサ素子を
形成するアルミ箔と反応して錯体を形成するために、コ
ンデンサの初期静電容量値が低く、高温負荷試験や高温
無負荷試験において静電容量が極端に減少し、漏れ電流
が増大する欠点がある。(1) (Problem to be solved by the invention) However, in an electrolytic solution containing 1,6-decanedicarboxylic acid as a solute, 1,6-decanedicarboxylic acid reacts with the aluminum foil forming the capacitor element and forms a complex. Because of this, the initial capacitance value of the capacitor is low, and the capacitance is extremely reduced during high-temperature load tests and high-temperature no-load tests, resulting in an increase in leakage current.
これ等の欠点を改良するために、１．６−デカンジカル
ボン酸に、例えばリン酸や硫酸（特開昭５８−９２２０
６号）、マレイン酸く特開昭５８９２２０８号）、クエ
ン酸（特開昭５９−２１９９２０号）等を添加している
。In order to improve these drawbacks, 1,6-decanedicarboxylic acid, for example, phosphoric acid or sulfuric acid (Japanese Patent Application Laid-Open No. 58-9220
6), maleic acid (Japanese Patent Application Laid-Open No. 5892208), citric acid (Japanese Patent Application Laid-Open No. 59-219920), etc.
しかし、これ等の添加剤は熱的な安定性が低く、高温領
域の特性の改善の効果が低い。However, these additives have low thermal stability and are less effective in improving properties in high temperature regions.
本発明は、以上の欠点を改良し、高温領域において安定
で、電解コンデンサの特性を向上しうる電解コンデンサ
用電解液を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide an electrolytic solution for electrolytic capacitors that improves the above-mentioned drawbacks, is stable in high-temperature ranges, and can improve the characteristics of electrolytic capacitors.
（課題を解決するための手段）
（２）
本発明は、上記の目的を達成するために、多価アルコー
ルを主成分とするＷ！媒に１．６−デカンジカルボン酸
またはその塩を溶解した電解コンデンサ用電解液におい
て、フェニルリン酸二ナトリウム水和物を溶解すること
を特徴とする電解コンデンサ用電解液を提供するもので
ある。(Means for Solving the Problems) (2) In order to achieve the above object, the present invention provides W! containing polyhydric alcohol as a main component! The present invention provides an electrolytic solution for an electrolytic capacitor in which 1,6-decanedicarboxylic acid or a salt thereof is dissolved in a medium, which is characterized in that disodium phenylphosphate hydrate is dissolved therein.
（作用〉
フェニルリン酸二ナトリウム水和物は１．６デカンジカ
ルボン酸とアルミニウム箔とが反応して錯体を形成する
のを防止できる。そのために錯体を原因としてコンデン
サの初期静電容量値が低くなり、高温度領域において劣
化する等を抑制できる。(Action) Disodium phenylphosphate hydrate can prevent 1.6-decanedicarboxylic acid from reacting with aluminum foil to form a complex. Therefore, the initial capacitance value of the capacitor is low due to the complex. Therefore, it is possible to suppress deterioration in a high temperature region.
（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.
溶媒には、エチレングリコールやジエチレングリコール
等の多価アルコールを用いる。Polyhydric alcohols such as ethylene glycol and diethylene glycol are used as the solvent.
溶質には、１．６−デカンジカルボン酸や１゜６−デカ
ンジカルボン酸アンモニウムを用いる。As the solute, 1.6-decanedicarboxylic acid or ammonium 1°6-decanedicarboxylate is used.
そして、添加剤としては、特に、フェニルリン（３） 酸二ナトリウムを用いる。As an additive, in particular, phenylphosphorus (3) Disodium acid is used.
他に、ＰＨ調整剤としてアンモニウム水を、化成性を改
良するために硼酸を添加する。In addition, ammonium water is added as a pH adjuster, and boric acid is added to improve chemical conversion properties.
次に、本発明の実施例と従来の電解液について、比抵抗
と火花電圧を測定したところ表１の通りの結果が得られ
た。測定時の電解液の温度は、比抵抗が３０℃、火花電
圧が８５℃とする。Next, when the specific resistance and spark voltage were measured for the electrolytic solution of the example of the present invention and the conventional electrolyte, the results shown in Table 1 were obtained. The temperature of the electrolytic solution at the time of measurement is 30° C. for specific resistance and 85° C. for spark voltage.
（４）
（５）
（６）
（７）
表１から明らかな通り、実施例１〜実施例７によれば、
比抵抗が４７０〜５１０Ωσ、火花電圧が４１０〜４５
０■となるのに対し、従来例１〜従来例５は、比抵抗が
５７０〜６００Ω・α、火（８）
花電圧が４１０〜４３０■となる。すなわち、火花電圧
はぽぽ同じであるが、比抵抗は実施例１〜実施例７によ
る方がほぼ７８％〜８９％となり、低い値が得られる。(4) (5) (6) (7) As is clear from Table 1, according to Examples 1 to 7,
Specific resistance is 470~510Ωσ, spark voltage is 410~45
In contrast, in Conventional Examples 1 to 5, the resistivity is 570 to 600 Ω·α and the spark voltage is 410 to 430. That is, although the spark voltage is the same in Popo, the specific resistance in Examples 1 to 7 is approximately 78% to 89%, which is a lower value.
また、表１の組成の電解液のうち、実施例１、実施例３
、実施例５及び実施例６並びに従来例１〜従来例３を含
浸した定格４’ＯＯＶ、１００μＦの電解コンデンサを
各２０個用いて、高温負荷試験及び高温無負荷試験を行
なった。高温負荷試験条件は、温度１０５°Ｃ１印加電
圧４００Ｖ、放置時間１０００ｈｒとする。また高温無
負荷試験条件は、温度１０５℃、放置時間１０００ｈｒ
とする。In addition, among the electrolytes having the compositions shown in Table 1, Example 1 and Example 3
A high-temperature load test and a high-temperature no-load test were conducted using 20 electrolytic capacitors each having a rating of 4'OOV and 100 μF impregnated with Example 5, Example 6, and Conventional Examples 1 to 3. The high temperature load test conditions are a temperature of 105° C., an applied voltage of 400 V, and a standing time of 1000 hr. In addition, the high temperature no-load test conditions were a temperature of 105℃ and a standing time of 1000 hours.
shall be.
測定結果は表２の通りとなる。The measurement results are shown in Table 2.
以下余白。Margin below.
（９）
（１０）
表２から明らかな通り、初期の静電容量は実施例１〜実
施例４の電解液を含浸したＮＯ１〜ＮＯ４が１０４〜１
１２μＦで、従来例１〜従来例３を含浸したＮ０５〜Ｎ
０６が９７．１〜９８．３μＦとなり、前者の方が後者
の約１．０６〜１゜１５倍となる。また、高温負荷試験
において、静電容量変化率は、ＮＯ１〜ＮＯ４が−１，
８〜２．９％であり、ＮＯ５〜ＮＯ７が−７，３〜１０
．９％となり、前者の本発明の実施例による方が後者の
約１７％〜４０％に減少できる。漏れ電流についても、
ＮＯ１〜ＮＯ４が５．１〜５゜９μＡ、Ｎ０５〜Ｎ０７
が１１．０〜１５．５μＡとなり、前者の方が後者の約
３３％〜５４％となり、増加を抑制できる。さらに、高
温無負荷試験において、静電容量変化率は、ＮＯＩ〜Ｎ
Ｏ４が−１，２〜−２，４％、ＮＯ５〜ＮＯ７が−８゜
５〜−１０．５％となり、前者は後者の約１１％〜２８
％となる。濡れ電流もＮＯ１〜ＮＯ４が１９２〜２２１
μＡ１ＮＯ３〜ＮＯ７が６３８〜７１０μＡとなり、前
者の方が後者の約２７％〜３（１１）
５％となり劣化が抑えられる。ｔａｎδの上昇もＮ０５
〜Ｎ０６が１．０５〜１．１倍、ＮＯ５〜ＮＯ７が１．
３〜１．５９倍となり、前者の方が後者よりも低い値に
抑えられる。(9) (10) As is clear from Table 2, the initial capacitance of NO1 to NO4 impregnated with the electrolytes of Examples 1 to 4 was 104 to 1.
N05 to N impregnated with Conventional Examples 1 to 3 at 12μF
06 is 97.1 to 98.3 μF, and the former is about 1.06 to 1.15 times the latter. In addition, in the high temperature load test, the capacitance change rate was -1 for NO1 to NO4,
8-2.9%, NO5-NO7 -7,3-10
．． The former embodiment of the present invention can reduce the latter to about 17% to 40%. Regarding leakage current,
NO1~NO4 is 5.1~5゜9μA, N05~N07
is 11.0 to 15.5 μA, and the former is about 33% to 54% of the latter, making it possible to suppress the increase. Furthermore, in high-temperature no-load tests, the capacitance change rate ranged from NOI to N
O4 is -1.2 to -2.4%, NO5 to NO7 is -8°5 to -10.5%, and the former is about 11% to 28% of the latter.
%. The wetting current is 192 to 221 for NO1 to NO4.
μA1NO3 to NO7 are 638 to 710 μA, and the former is about 27% to 3(11)5% of the latter, suppressing deterioration. Increase in tanδ is also N05
~N06 is 1.05-1.1 times, NO5-NO7 is 1.
3 to 1.59 times, and the former can be suppressed to a lower value than the latter.
（発明の効果）
以上の通り、本発明によれば、フェニルリン酸二ナトリ
ウム水和物を添加することにより、電解コンデンサに含
浸した場合にその静電容量特性やｔａｎδ特性、漏れ電
流特性を向上しうる電解コンデンサ用電解液が得られる
。(Effects of the Invention) As described above, according to the present invention, by adding disodium phenylphosphate hydrate, when impregnated into an electrolytic capacitor, the capacitance characteristics, tan δ characteristics, and leakage current characteristics are improved. An electrolytic solution for electrolytic capacitors that can be used in electrolytic capacitors is obtained.
Claims (1)
カンジカルボン酸またはその塩を溶解した電解コンデン
サ用電解液において、フェニルリン酸二ナトリウム水和
物を溶解することを特徴とする電解コンデンサ用電解液
。(1) Electrolysis characterized by dissolving disodium phenylphosphate hydrate in an electrolytic solution for electrolytic capacitors in which 1,6-decanedicarboxylic acid or its salt is dissolved in a solvent containing polyhydric alcohol as a main component. Electrolyte for capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063790A JPH0719731B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2063790A JPH0719731B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03225909A true JPH03225909A (en) | 1991-10-04 |
| JPH0719731B2 JPH0719731B2 (en) | 1995-03-06 |
Family
ID=12032743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2063790A Expired - Lifetime JPH0719731B2 (en) | 1990-01-31 | 1990-01-31 | Electrolytic solution for electrolytic capacitors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0719731B2 (en) |
-
1990
- 1990-01-31 JP JP2063790A patent/JPH0719731B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0719731B2 (en) | 1995-03-06 |
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