KR930000424B1 - Electrolyte for aluminium capacitor - Google Patents
Electrolyte for aluminium capacitor Download PDFInfo
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- KR930000424B1 KR930000424B1 KR1019900016040A KR900016040A KR930000424B1 KR 930000424 B1 KR930000424 B1 KR 930000424B1 KR 1019900016040 A KR1019900016040 A KR 1019900016040A KR 900016040 A KR900016040 A KR 900016040A KR 930000424 B1 KR930000424 B1 KR 930000424B1
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- Prior art keywords
- electrolyte
- gbl
- added
- mixed
- nitrophenol
- Prior art date
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 25
- 239000003990 capacitor Substances 0.000 title claims description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims 3
- 229910052782 aluminium Inorganic materials 0.000 title claims 3
- 239000004411 aluminium Substances 0.000 title 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 27
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000012153 distilled water Substances 0.000 claims description 5
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 claims description 4
- 239000012046 mixed solvent Substances 0.000 claims description 3
- GEWWCWZGHNIUBW-UHFFFAOYSA-N 1-(4-nitrophenyl)propan-2-one Chemical compound CC(=O)CC1=CC=C([N+]([O-])=O)C=C1 GEWWCWZGHNIUBW-UHFFFAOYSA-N 0.000 claims description 2
- 150000005621 tetraalkylammonium salts Chemical class 0.000 claims description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 abstract description 3
- CKFGINPQOCXMAZ-UHFFFAOYSA-N methanediol Chemical compound OCO CKFGINPQOCXMAZ-UHFFFAOYSA-N 0.000 abstract 4
- 235000019256 formaldehyde Nutrition 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000011259 mixed solution Substances 0.000 abstract 1
- 239000008213 purified water Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 125000005207 tetraalkylammonium group Chemical group 0.000 abstract 1
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 8
- 239000002904 solvent Substances 0.000 description 8
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 239000004254 Ammonium phosphate Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- -1 methyl glycols Chemical class 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 2
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical class C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 2
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000001741 Ammonium adipate Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 235000019293 ammonium adipate Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 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
- 230000000295 complement effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000008151 electrolyte solution 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
- 239000000463 material Substances 0.000 description 1
- VRUJCFSQHOLHRM-UHFFFAOYSA-L phthalate;tetramethylazanium Chemical compound C[N+](C)(C)C.C[N+](C)(C)C.[O-]C(=O)C1=CC=CC=C1C([O-])=O VRUJCFSQHOLHRM-UHFFFAOYSA-L 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001502 supplementing effect Effects 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/02—Diaphragms; Separators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
본 발명은 Al전해 콘덴서에 사용되는 전해질에 관한 것으로, 특히 고주파에서 저임피이던스 특성을 가지며 장시간 사용할 수 있는 Al 전해 콘덴서용 전해질에 관한 것이다.The present invention relates to an electrolyte used in Al electrolytic capacitors, and more particularly, to an electrolyte for Al electrolytic capacitors having low impedance characteristics at high frequencies and which can be used for a long time.
종래 SMPS용 콘덴서에 사용된 전해질로는 N-메틸포름아미드(NMF), 디메틸포름아미드(DMF) 등의 용매에 암모늄염을 혼합한 것을 사용하여 왔다.Conventionally, as an electrolyte used in a capacitor for SMPS, an ammonium salt is mixed with a solvent such as N-methylformamide (NMF) or dimethylformamide (DMF).
그러나 상기 전해질을 전해 콘덴서에 사용했을 경우에는 전도율이 낮아지고 손실특성, 주파수 특성이 약화되므로 콘덴서의 효율이 낮아진다.However, when the electrolyte is used in an electrolytic capacitor, the conductivity is lowered and the efficiency of the capacitor is lowered because the loss characteristics and the frequency characteristics are weakened.
또한 전해질에 사용된 용매 용질이 온도변화, 콘덴서 사용시간의 경과에 따라 특성이 변하게 되므로 105℃에서의 사용시간이 약 2000시간 정도밖에 되지 못하였다.In addition, since the solvent solute used in the electrolyte changes in characteristics with the temperature change and the condenser use time, the use time at 105 ° C. was only about 2000 hours.
따라서 본 발명의 목적은 고주파에서 저임피이던스 특성을 가지고 장시간 사용가능한 Al 전해 콘덴서용 전해질을 제공하는데 있다.Accordingly, an object of the present invention is to provide an electrolyte for Al electrolytic capacitors having a low impedance characteristic at a high frequency and which can be used for a long time.
상기 목적을 달성하기 위해서, 본 발명에서는 γ-부티롤락톤(GBL), 메틸셀로솔브(MCS), 에틸렌 글리콜(EG), 메틸글리콜들의 단독 또는 혼합한 영매를 테트라알킬 암모늄염, 특히 테트라메틸 암모늄염에 혼합하고, 기능성 약품을 첨가한 전해질을 제공한다.In order to achieve the above object, in the present invention, γ-butyrolactone (GBL), methyl cellosolve (MCS), ethylene glycol (EG), or a medium mixed with methyl glycols alone or mixed with tetraalkyl ammonium salt, especially tetramethyl ammonium salt It is mixed with and provides an electrolyte to which a functional chemical is added.
본 발명 전해질 중 용매로 사용되는 것은 염의 이온화율을 높이고, 온도 및 수명특성을 보완할 수 있는 GBL계 혼합용매가 바람직하다.The solvent used in the electrolyte of the present invention is a GBL-based mixed solvent capable of increasing the ionization rate of the salt and supplementing the temperature and life characteristics.
용질론는 비저항을 감소시켜 전도도를 높이는데 적당한 테트라메틸 암모늄염이 바람직하게 사용된다.Solute is preferably used a tetramethyl ammonium salt suitable for reducing the specific resistance to increase the conductivity.
또한 전해질에는 기능성 약품이 소량 첨가되는데, 이것은 콘덴서에 사용되는 기타 다른 소재와의 특성을 보완하기 위한 것으로 소량의 증류수 P-니트로벤조산, P-니트로페놀, 메니톨등을 첨가하여 혼합 용매내에서 용질의 전도율을 높이는 등의 효과가 있다.In addition, a small amount of functional chemicals are added to the electrolyte, which is intended to complement the properties of other materials used in the condenser. Solutes are added in a mixed solvent by adding a small amount of distilled water such as P-nitrobenzoic acid, P-nitrophenol, or menitol. This has the effect of increasing the conductivity.
이와 같이 본 발명의 전해질을 Al 전해콘덴서에 사용한 경우에는 전해질의 비저항이감소하므로 전도율이 증가하고, 콘덴서의 손실 및 고주파에서의 임피턴스 감소효과가 있으며, 용매, 용질이 온도 변화 및 시간 경과에 대해 안정하므로 장시간 사용가능하다.As described above, when the electrolyte of the present invention is used in an Al electrolytic capacitor, the conductivity of the electrolyte decreases, so that the conductivity increases, and the loss of the capacitor and the impedance at high frequencies are reduced. It is stable and can be used for a long time.
이하 실시예를 통해 본 발명을 더욱 상세히 설명하고자 한다.Hereinafter, the present invention will be described in more detail with reference to the following examples.
[실시예 1]Example 1
GBL, EG, 메틸 글리콜 용매를 전해질에 대한 중량%로 각각 50-80%, 1-10%, 5-20%를 테트라메틸 아모늄 프탈레이트 10-25%와 혼합하고, 증류수 P-니트로벤조산, 메니톨 적당량을 첨가하여 GBL계 Al전해 콘덴서용 전해질을 제조한다.GBL, EG and methyl glycol solvents are mixed with 50% -80%, 1-10% and 5-20% by weight of the electrolyte with 10-25% tetramethylamonium phthalate, respectively, and distilled water P-nitrobenzoic acid, menis An appropriate amount of toll is added to prepare an electrolyte for a GBL-based Al electrolytic capacitor.
[실시예 2]Example 2
GBL 용매 70-90%를 테드라메틸암모늄 프탈레이트 10-30%와 혼합하여 GBL계 Al 전해 콘덴서용 전해질을 제조한다.70-90% of a GBL solvent was mixed with 10-30% of tedlamethylammonium phthalate to prepare an electrolyte for a GBL-based Al electrolytic capacitor.
[실시예 3]Example 3
GBL, EG, 메틸 글리콜 용매를 전해질에 대한 중량5로 각각 50-80%, 1-10%, 5-20%를 테트라메틸 아모늄 프탈레이트 0.8-16%, 암모님 50-600㎎/ℓ과 혼합하고, 증류수와 P-니트로벤조산 적당량을 첨가하여 GBL계 Al 전해 콘덴서용 전해질을 제조한다.GBL, EG and methyl glycol solvents were mixed with 50-80%, 1-10% and 5-20% of tetramethyl ammonium phthalate 0.8-16% and ammonium 50-600 mg / l, respectively, by weight 5 of the electrolyte. Then, an appropriate amount of distilled water and P-nitrobenzoic acid are added to prepare an electrolyte for a GBL-based Al electrolytic capacitor.
[비교예 1]Comparative Example 1
EG 용매 60-70%를 암모늄 아디페이트 5-10%, 아디프산 1-10%와 혼합하고 P-니트로페놀, 암모늄 포스페이트, 증류수 적당량을 첨가하여 EG계 Al 전해 콘덴서용 전해질을 제조한다.60-70% of EG solvent was mixed with 5-10% of ammonium adipate and 1-10% of adipic acid, and P-nitrophenol, ammonium phosphate and distilled water were added to prepare an electrolyte for an EG Al electrolytic capacitor.
[비교예 2]Comparative Example 2
NMF 용매 80-90%를 트리에틸아민 1-10%, 붕산 5-10%와 혼합하고, 말레산, P-니트로페놀, 암모늄 포스페이트 적당량을 첨가하여 NMF계 Al 전해 콘덴서용 전해질을 제조한다.80-90% of NMF solvent is mixed with 1-10% of triethylamine and 5-10% of boric acid, and an appropriate amount of maleic acid, P-nitrophenol, and ammonium phosphate is added to prepare an electrolyte for an NMF-based Al electrolytic capacitor.
상기 실시예 및 비교예에서 제조된 전해질을 Al 전해 콘덴서에 사용한 경우의 특성치를 〈표1〉에 나타내었다.The characteristic values when the electrolytes prepared in the above Examples and Comparative Examples were used in the Al electrolytic capacitor are shown in <Table 1>.
[표 1]TABLE 1
〈표1〉에서 tanα는 손실계수를 나타내는 것으로 본 발명의 초기 손실값은 종래보다약 50%이상 감소하였음을 알수 있다.In Table 1, tanα represents a loss factor, and it can be seen that the initial loss value of the present invention is reduced by about 50% or more.
또한 10KHz에서의 임피던스(Z) 값도 종래의 0.121Ω에 비해 본 발명에서는 0.047Ω까지 현저히 감소되었다.In addition, the impedance (Z) value at 10 KHz is also significantly reduced to 0.047 Ω in the present invention compared to the conventional 0.121 Ω.
Rs는 비저항값으로 전도율이 증가할수록 RS는 감소한다.Rs is a specific resistance value and RS decreases as conductivity increases.
Vsp는 전해질 용액이 견딜수 있는 전압의 상한치를 나타낸 것이다.Vsp is the upper limit of the voltage that the electrolyte solution can withstand.
또한 105℃, 5000시간에서의 수명특성은 실시예 1,2의 제품은 양호하게 나타났으며 비교예 1,2는 2000hrs경과후부터 불량이 발생되었다.In addition, the life characteristics at 105 ° C. and 5000 hours showed that the products of Examples 1 and 2 were good, and Comparative Examples 1 and 2 were defective after 2000hrs.
따라서 본 발명의 전해질은 고주파, 저임피던스의 특성을 나타내며 장시간 사용가능한 것 등 종래의 것보다 우수한 효과가 있다.Therefore, the electrolyte of the present invention exhibits characteristics of high frequency and low impedance, and has an effect superior to that of the conventional one, such as being usable for a long time.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900016040A KR930000424B1 (en) | 1990-10-10 | 1990-10-10 | Electrolyte for aluminium capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019900016040A KR930000424B1 (en) | 1990-10-10 | 1990-10-10 | Electrolyte for aluminium capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR920008790A KR920008790A (en) | 1992-05-28 |
| KR930000424B1 true KR930000424B1 (en) | 1993-01-21 |
Family
ID=19304476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019900016040A KR930000424B1 (en) | 1990-10-10 | 1990-10-10 | Electrolyte for aluminium capacitor |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR930000424B1 (en) |
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1990
- 1990-10-10 KR KR1019900016040A patent/KR930000424B1/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| KR920008790A (en) | 1992-05-28 |
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