JP5327255B2 - 電解コンデンサの製造方法 - Google Patents
電解コンデンサの製造方法 Download PDFInfo
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- JP5327255B2 JP5327255B2 JP2011072051A JP2011072051A JP5327255B2 JP 5327255 B2 JP5327255 B2 JP 5327255B2 JP 2011072051 A JP2011072051 A JP 2011072051A JP 2011072051 A JP2011072051 A JP 2011072051A JP 5327255 B2 JP5327255 B2 JP 5327255B2
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- Prior art keywords
- acid
- conductive polymer
- capacitor element
- separator
- fine particles
- Prior art date
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- 239000011888 foil Substances 0.000 claims description 46
- 239000010419 fine particle Substances 0.000 claims description 32
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- 238000000034 method Methods 0.000 claims description 12
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- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 description 36
- 239000002253 acid Substances 0.000 description 17
- 229910052782 aluminium Inorganic materials 0.000 description 16
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- 239000005711 Benzoic acid Substances 0.000 description 2
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- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
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- FYMCOOOLDFPFPN-UHFFFAOYSA-K iron(3+);4-methylbenzenesulfonate Chemical compound [Fe+3].CC1=CC=C(S([O-])(=O)=O)C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1 FYMCOOOLDFPFPN-UHFFFAOYSA-K 0.000 description 2
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- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 1
- 229960001755 resorcinol Drugs 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000003458 sulfonic acid derivatives Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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- 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
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- 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
- H01G9/022—Electrolytes; Absorbents
- H01G9/025—Solid electrolytes
- H01G9/028—Organic semiconducting electrolytes, e.g. TCNQ
-
- 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
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
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- Engineering & Computer Science (AREA)
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Description
エッチング処理により表面を粗面化した後に陽極酸化処理により誘電体酸化皮膜(化成電圧45V)を形成したアルミニウム箔からなる陽極箔と、アルミニウム箔をエッチング処理した陰極箔とを、セルロースのセパレータ(基材の厚さ50μm、密度0.40g/cm3)を介在させて巻回することによりコンデンサ素子を得た。得られたコンデンサ素子を導電化したポリチオフェンポリマー微粒子(40nm)2%の分散液(イソプロピルアルコール溶液)に浸漬し、減圧状態にすることにより、微粒子をコンデンサ素子内(セパレータの繊維表面及び繊維間及び両電極箔の表面)に充填した。その後、60℃の雰囲気温度にて5分間放置し、さらに120℃の温度で10分間放置することで余分な水分を除去した。
前記実施例1において、セルロースのセパレータ(基材の厚さ50μm、密度0.25/cm3)を使用した以外は、実施例1と同様にして電解コンデンサを作製した。
前記実施例1において、分散剤の溶液にアニオン性の界面活性剤(ポリスチレンスルホン酸)を1重量%添加した以外は、実施例1と同様にして電解コンデンサを作製した。
前記実施例1において、陰極箔に2V化成を施したアルミニウム化成箔を用いた以外は、実施例1と同様にして電解コンデンサを作製した。
前記実施例1において、駆動用電解液Aに有機酸であるピロメリット酸を4重量%添加した以外は、実施例1と同様にして電解コンデンサを作製した。なお、駆動用電解液の電解質の酸成分と塩基成分のモル数は1:0.9である。
前記実施例1と同様に、エッチング処理により表面を粗面化した後に陽極酸化処理により誘電体酸化皮膜(化成電圧45V)を形成したアルミニウム箔からなる陽極箔と、アルミニウム箔をエッチング処理した陰極箔とを、セルロースのセパレータ(基材の厚さ50μm、密度0.40g/cm3)を介在させて巻回することによりコンデンサ素子を得た。その後、コンデンサ素子をチオフェンモノマーとp−トルエンスルホン酸酸化第二鉄のブタノール溶液の混合溶液に含浸し、含浸後、加熱することで化学重合反応を起こし、コンデンサ素子内に導電性高分子を形成した。その後、このコンデンサ素子を有底筒状のアルミニウムケースに挿入後、そのアルミニウムケースの開口部を樹脂加硫ブチルゴム封口材でカーリング処理により封止し、更に陽極箔、陰極箔から夫々導出された両リードをポリフェニレンサルファイド製の絶縁座板に通し、そのリード部を扁平に折り曲げ加工して前記絶縁座板を固定した。
前記実施例1において、セルロースのセパレータ(基材の厚さ50μm、密度0.5/cm3)を使用した以外は、実施例1と同様にして電解コンデンサを作製した。
前記実施例1において、駆動用電解液にフタル酸第4級アンモニウム塩のγ−ブチロラクトン溶液を用いた以外は、実施例1と同様にして電解コンデンサを作製した。
前記実施例1において、駆動用電解液Aの塩基成分である1,2,3,4−テトラメチルイミダゾリニウムを2重量%過剰にした以外は、実施例1と同様にして電解コンデンサを作製した。なお、駆動用電解液の電解質の酸成分と塩基成分のモル数は1:1.2である。
2 陰極箔
3 セパレータ
4 陽極リード
5 陰極リード
6 封口部材
7 金属ケース
8 座板
9 コンデンサ素子
Claims (2)
- 誘電体皮膜が形成された陽極箔と、陰極箔とをセパレータを介して巻回することにより構成されたコンデンサ素子と、前記陽極箔、前記陰極箔及び前記セパレータに付着した導電性高分子微粒子と、前記コンデンサ素子に含浸された電解液と、前記コンデンサ素子を収納した有底の外装ケースと、この外装ケースの開口部を封口した封口材とを備える電解コンデンサの製造方法であって、
前記コンデンサ素子に、前記導電性高分子微粒子が水または低級アルコールを含む溶媒に分散された分散液を含浸させ、
次に、前記溶媒を残存させるようにして前記コンデンサ素子を減圧状態にし、
その後、前記コンデンサ素子を加熱することにより、前記分散液の溶媒を蒸発させて前記導電性高分子微粒子を前記陽極箔と前記陰極箔の表面及び前記セパレータの繊維表面に付着させ、
次に、前記コンデンサ素子に電解液を含浸させる工程を備えた電解コンデンサの製造方法。 - 前記セパレータの密度が0.4g/cm3以下であると共に前記導電性高分子微粒子の直径が1μm以下である請求項1に記載の電解コンデンサの製造方法。
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