JPH0485807A - Electrolyte for electrolytic capacitor - Google Patents
Electrolyte for electrolytic capacitorInfo
- Publication number
- JPH0485807A JPH0485807A JP19846690A JP19846690A JPH0485807A JP H0485807 A JPH0485807 A JP H0485807A JP 19846690 A JP19846690 A JP 19846690A JP 19846690 A JP19846690 A JP 19846690A JP H0485807 A JPH0485807 A JP H0485807A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- electrolyte
- electrolytic capacitor
- capacitor
- temperature
- 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 abstract description 15
- 239000003792 electrolyte Substances 0.000 title abstract description 6
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 claims abstract description 8
- QLZHNIAADXEJJP-UHFFFAOYSA-N Phenylphosphonic acid Chemical compound OP(O)(=O)C1=CC=CC=C1 QLZHNIAADXEJJP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002904 solvent Substances 0.000 claims abstract description 4
- 239000008151 electrolyte solution Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 3
- 150000005846 sugar alcohols Polymers 0.000 claims description 3
- 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
- 239000000654 additive Substances 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- JKEPZLCXHQBXFD-UHFFFAOYSA-N azanium;2-butyl-8-hydroxy-8-oxooctanoate Chemical compound [NH4+].CCCCC(C([O-])=O)CCCCCC(O)=O JKEPZLCXHQBXFD-UHFFFAOYSA-N 0.000 abstract 1
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229940021013 electrolyte solution Drugs 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 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
- 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
- 230000007423 decrease 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
- 239000000203 mixture 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
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (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ｍ酸あるいはその
塩を溶質としている。中高圧用では、有りｌ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。Detailed Description of the Invention (Prior Art) The present invention provides an electrolytic solution for an electrolytic capacitor that can be used at high temperatures. The salt is the solute. For medium and high pressure applications, 1,6-decanedicarboxylic acid is known as an acid solute as disclosed in Japanese Patent Publication No. 13293/1983.
（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。(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 to form a complex. Another drawback is that the initial capacitance value of the capacitor is low, and the capacitance decreases dramatically during high-temperature load tests and high-temperature no-load tests, and leakage current increases.
従来は、これ等の欠点を改良するなめに、１゜６−デカ
ンジカルボン酸に、リン酸や硫酸（特開昭５８−９２２
０６号）、マレイン酸（特開昭５８−９２２０８号）、
クエン酸（特開昭５９−２１９９２０号）等を添加して
いる。Conventionally, in order to improve these drawbacks, phosphoric acid or sulfuric acid (Japanese Patent Application Laid-Open No. 58-922
06), maleic acid (JP-A-58-92208),
Citric acid (JP-A-59-219920) and the like are added.
しかし、これ等の添加側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）
本発明は、上記の目的を達成するために、多価アルコー
ルを主成分とする溶媒に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
、フェニルホスホン酸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) In order to achieve the above object, the present invention provides an electrolytic solution for electrolytic capacitors in which 1,6-decanedicarboxylic acid or a salt thereof is dissolved in a solvent containing polyhydric alcohol as a main component. The present invention provides an electrolytic solution for an electrolytic capacitor characterized by dissolving phenylphosphonic acid.
（作用）
フェニルホスホン酸は、１．６−デカンジカルボン酸が
アルミニウム箔と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。(Function) Phenylphosphonic acid can prevent 1,6-decanedicarboxylic acid from reacting with aluminum foil to form a complex. Therefore, the initial capacitance value of the capacitor becomes low due to the complex, and deterioration in a high temperature region can be suppressed.
（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等を用いる。As the solute, 1,6-decanedicarboxylic acid, ammonium 1°6-decanedicarboxylate, etc. are used.
そして、添加側としては、特に、フェニルホスホン酸を
０．０１〜５ｗｔ％程度添加する。On the addition side, in particular, phenylphosphonic acid is added in an amount of about 0.01 to 5 wt%.
他に、ＰＨｇ整剤としてアンモニウム水を、化成性を改
良するために硼酸等を添加してもよい。In addition, ammonium water may be added as a PHg adjuster, and boric acid or the like may be 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なところ表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, the specific resistance and spark voltage were measured for the electrolyte of the example of the present invention and the conventional electrolyte, and 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.
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５００〜５２０Ω・■、火花電圧が４３０〜４
５０Ｖとなるのに対し、従来例１〜従来例５は、比抵抗
が５７０〜６００Ω・■、火花電圧が４１０〜４３０Ｖ
となる。すなわち、比抵抗は実施例１〜実施例７による
方が従来例１〜従来例５のほぼ８３％〜９１％となり、
低い値が得られる。また火花電圧も、前者の方が後者の
１．１倍まで高くなる。As is clear from Table 1, according to Examples 1 to 7,
Specific resistance is 500-520Ω・■, spark voltage is 430-4
50V, whereas in Conventional Examples 1 to 5, the specific resistance is 570 to 600Ω・■, and the spark voltage is 410 to 430V.
becomes. That is, the specific resistance of Examples 1 to 7 is approximately 83% to 91% of that of Conventional Examples 1 to 5.
A low value is obtained. Further, the spark voltage is also 1.1 times higher in the former case than in the latter case.
また、表１の組成の電解液のうち、実施例２、実施例３
及び実施例５並びに従来例１〜従来例３を含浸した定格
４００Ｖ、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
負荷試験条件は一温度１０５℃、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。測定結
果は表２の通りとなる。測定値は平均値を示す。Furthermore, among the electrolytes having the compositions shown in Table 1, Example 2 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 400 V and 100 μF impregnated with Example 5 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. Further, the high temperature no-load test conditions are a temperature of 105° C. and a standing time of 1000 hr. The measurement results are shown in Table 2. Measured values indicate average values.
以下余白。Margin below.
表２から明らかな通り、初期のｎ！容量は実施例２、実
施例３及び実施例５の電解液を含浸したＮＯ１〜Ｎ０３
が１０２〜１０３μＦで、従来例１〜従来例３を含浸し
たＮＯ４〜ＮＯ６が９７゜１〜９８．３μＦとなり、前
者の方が後者の約１゜０４〜１．０６倍となる。また、
高温負荷試験において、静電容量変化率は、Ｎｏｔ〜Ｎ
Ｏ３が−１，５〜−２，１％であり、ＮＯ４〜ＮＯ６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１４％〜２９％に減少できる。ｔａ
ｎδは、初期値に比べてＮＯＩ〜ＮＯ３が１，１０〜１
．２０倍、ＮＯ４〜ＮＯ６が１２４〜１．４５倍となり
、前者の方が後者よりも低い値に抑えられている。ｉＡ
ｉ＠流についても。As is clear from Table 2, the initial n! The capacity is NO1 to NO3 impregnated with the electrolyte solutions of Example 2, Example 3, and Example 5.
is 102 to 103 μF, and NO4 to NO6 impregnated with Conventional Examples 1 to 3 are 97°1 to 98.3 μF, the former being about 1°04 to 1.06 times the latter. Also,
In the high temperature load test, the capacitance change rate was Not~N
O3 is -1.5 to -2.1%, NO4 to NO6 is -7.3 to -10.9%, and the former according to the embodiment of the present invention is about 14% to 29% of the latter. Can be reduced. ta
For nδ, NOI~NO3 is 1, 10~1 compared to the initial value.
．． 20 times, and NO4 to NO6 are 124 to 1.45 times, and the former is suppressed to a lower value than the latter. iA
Also about i@ryu.
ＮＯ１〜ＮＯ３が５．７〜６，０μＡ−ＮＯ４〜Ｎ０６
が１１．０〜１５．５μＡとなり、前者の方が後者の約
３７％〜５５％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
Ｏ３が−１，３〜−１゜９％、ＮＯ４〜ＮＯ６が−８，
５〜−１０，５％となり、前者は後者の約１２％〜２２
％となる。NO1~NO3 is 5.7~6,0μA-NO4~N06
is 11.0 to 15.5 μA, and the former is about 37% to 55% of the latter, so the increase can be suppressed. Furthermore, in high-temperature no-load tests, the capacitance change rate ranged from NOI to N
O3 is -1.3 to -1°9%, NO4 to NO6 is -8,
5 to -10.5%, and the former is about 12% to 22% of the latter.
%.
漏れ電流もＮＯ１〜Ｎ０３が１９８〜２２０μＡ、ＮＯ
４〜Ｎ０６が６３８〜７１０μＡとなり、前者の方が後
者の約２８％〜３４％となり劣化が抑えられる。 ｔ
ａｎδの上昇もＮＯ１〜ＮＯ３が０゜９３〜１．０４倍
、ＮＯ４〜ＮＯ６が１．０３〜１．１０倍となり、前者
の方が後者よりも低い値に抑えられる。Leakage current is 198-220μA for NO1-N03, NO
4 to N06 is 638 to 710 μA, and the former is about 28% to 34% of the latter, suppressing deterioration. t
The increase in an δ is also 0°93 to 1.04 times for NO1 to NO3 and 1.03 to 1.10 times for NO4 to NO6, and the former is 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、フェニルホスホン酸を添
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ｔ液特性を向上し
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 phenylphosphonic acid, it is possible to improve the capacitance characteristics, tan δ characteristics, and leakage T liquid characteristics of an electrolytic capacitor when the electrolytic capacitor is impregnated with the phenylphosphonic acid. An electrolyte solution for use is obtained.
特許出願人 日立コンデンサ株式会社Patent applicant: Hitachi Capacitor Co., Ltd.
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、フェニルホスホン酸を溶解するこ
とを特徴とする電解コンデンサ用電解液。(1) An electrolytic solution for an electrolytic capacitor in which 1,6-decanedicarboxylic acid or a salt thereof is dissolved in a solvent containing polyhydric alcohol as a main component, which is characterized in that phenylphosphonic acid is dissolved therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19846690A JPH0485807A (en) | 1990-07-26 | 1990-07-26 | Electrolyte for electrolytic capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19846690A JPH0485807A (en) | 1990-07-26 | 1990-07-26 | Electrolyte for electrolytic capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0485807A true JPH0485807A (en) | 1992-03-18 |
Family
ID=16391579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19846690A Pending JPH0485807A (en) | 1990-07-26 | 1990-07-26 | Electrolyte for electrolytic capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0485807A (en) |
-
1990
- 1990-07-26 JP JP19846690A patent/JPH0485807A/en active Pending
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