JP2011524629A - 漏えい電流の少ない電解キャパシタを製造するための方法 - Google Patents
漏えい電流の少ない電解キャパシタを製造するための方法 Download PDFInfo
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- JP2011524629A JP2011524629A JP2011512057A JP2011512057A JP2011524629A JP 2011524629 A JP2011524629 A JP 2011524629A JP 2011512057 A JP2011512057 A JP 2011512057A JP 2011512057 A JP2011512057 A JP 2011512057A JP 2011524629 A JP2011524629 A JP 2011524629A
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- anode
- valve metal
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- capacitor anode
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Images
Classifications
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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
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- H01G11/54—Electrolytes
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- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
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Abstract
Description
(キャパシタンス[C]×活性化電圧[V])/電極体の重量[g]
実施例1〜5
亜酸化ニオブ粉末からなり、かつ60000もしくは80000μFV/g(=NbO 60Kもしくは80K)のキャパシタンスを有するアノードを、リン酸中で35Vで活性化した。活性化された電解質は、続けて温度85℃の湯の中で1時間、アノードから洗い落とされる。ついでアノードは、炉で1時間、85℃で乾燥される。このようにして製造された酸化したアノード体のいくつかは、ついでNaOH、H2O2、シュウ酸もしくはHFを含む浸漬槽に導入される。すなわち、酸化アノード体をこれらの化合物で処理する工程が実施される。浸漬工程の時間は30もしくは60秒(sec.)である。この処理後、アノードは再度、水ですすがれ、ついで再度85℃で乾燥される。このようにして得られたアノード体には、化学的in situ重合により、固体電解質(=ポリマー固体電解質)が設けられる。この目的のために、3,4−エチレンジオキシチオフェン(Clevios(商標) M,H.C. Starck GmbH)を1重量部、および鉄(III)p−トルエン−スルホン酸(Clevios(商標) C-ER,H. C. Starck GmbH)の40%重量強度のエタノール溶液20重量部を有する溶液が用意される。
酸化したアノード体(NbO 60K)は、実施例1〜5で説明された工程と類似した方法によって製造される。このように製造された酸化したアノード体のいくつかは、続けて次のように処理される。すなわち、以下の化合物を用いたこれらのアノード体の処理が実施される。
1.エタノールに浸漬する
2.溶液に浸漬する(エタノール中、タンタルエトキシド30%)
3.大気中で加水分解
60000μFV/g(=NbO 60K)のキャパシティを有する亜酸化ニオブ粉末は、2つの異なる圧縮成形工具を用いて素地体(圧縮成形アノード)に圧縮成形される。圧縮成形工具の1つは、従来のスチール圧縮成形工具であり(実施例7a)、他の圧縮成形工具は、コバルト結合剤8.5重量パーセントを含む炭化タングステンからなる硬質金属である(実施例7b)。圧縮成形後、圧縮されたアノードは焼結されて、同様にリン酸中で35Vで陽極酸化された焼結アノードが作製される。その後、焼結され陽極酸化処理されたアノードは、リン酸を除去するために温度85℃の水ですすがれ、かつ炉で温度85℃で乾燥される。このようにして得られたアノード体には、化学的in situ重合により、固体電解質(=ポリマー固体電解質)が設けられる。
Claims (11)
- 弁金属粒子もしくは弁金属に相当する特性を有する化合物の粒子を圧縮成形もしくは切断して、多孔質電極体を製造することにより、前記弁金属もしくは前記弁金属に相当する特性を有する前記化合物を材料とするキャパシタアノードを製造する方法において、
圧縮成形もしくは切断工具は、金属炭化物、酸化物、ホウ化物、窒化物もしくはケイ化物、炭窒化物もしくはその合金、セラミック材料、硬質および/またはスチール合金、または特定の場合において使用されるキャパシタアノード材料で作製、もしくはコーティングされることを特徴とする、キャパシタアノードを製造する方法。 - 前記圧縮成形もしくは前記切断工具が含む材料、もしくは前記多孔性電極体の表面をコーティングする材料の濃度は、300ppmより低いことを特徴とする、請求項1記載の方法。
- 弁金属もしくは弁金属に相当する特性を有する化合物を材料とするキャパシタアノードを製造する方法において、
多孔性電極体が、錯体、酸化体、ブレンステッド基、およびブレンステッド酸からなる群から選択される化合物で処理されることを特徴とする、キャパシタアノードを製造する方法。 - 前記錯化剤、前記酸化体、前記ブレンステッド基または前記ブレンステッド酸は、0.001M〜10Mの範囲の濃度を有することを特徴とする、請求項3記載の方法。
- 弁金属もしくは弁金属に相当する特性を有する化合物を材料とするキャパシタアノードを製造する方法において、活性化されたアノード体が、液体もしくは溶液として提供される有機タンタル化合物で処理されることを特徴とする、キャパシタアノードを製造する方法。
- 液体もしくは溶液として提供される前記有機タンタ化合物は、0.001M〜10.0Mの範囲の濃度を有することを特徴とする、請求項5記載の方法。
- 前記弁金属もしくは前記弁金属に相当する特性を有する前記化合物は、タンタル、ニオブもしくは亜酸化ニオブであってもよいことを特徴とする、請求項1〜6のいずれか1項記載の方法。
- 少なくとも請求項1から7のいずれか1つに記載の方法により製造されることを特徴とする、キャパシタアノード。
- 請求項8記載のキャパシタアノードを含む、固体電解キャパシタ。
- 請求項9記載の固体電解キャパシタの電子回路における、使用。
- 請求項9記載の固体電解キャパシタを含む、電子回路。
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DE102008026304A DE102008026304A1 (de) | 2008-06-02 | 2008-06-02 | Verfahren zur Herstellung von Elektrolytkondensatoren mit niedrigem Leckstrom |
PCT/EP2009/055751 WO2009147002A2 (en) | 2008-06-02 | 2009-05-13 | Process for producing electrolytic capacitors having a low leakage current |
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EP3570999A4 (en) | 2017-01-17 | 2020-06-17 | Kemet Electronics Corporation | IMPROVED WIRE FOR ANODE CONNECTION |
CN107706005B (zh) * | 2017-10-13 | 2019-06-28 | 浙江萨科能源科技有限公司 | 一种能够减少漏电流的超级电容器电极的制备方法 |
RU2680082C1 (ru) * | 2018-05-31 | 2019-02-15 | Федеральное государственное бюджетное учреждение науки Федеральный исследовательский центр "Кольский научный центр Российской академии наук" (ФИЦ КНЦ РАН) | Способ изготовления анода конденсатора на основе вентильного металла |
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JP2007129022A (ja) * | 2005-11-02 | 2007-05-24 | Showa Denko Kk | コンデンサ素子用材料の切断装置およびコンデンサ素子の製造方法 |
JP2007201239A (ja) * | 2006-01-27 | 2007-08-09 | Hitachi Aic Inc | 電解コンデンサ用エッチング箔とそれを用いた陽極箔の製造方法 |
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US20110128676A1 (en) | 2011-06-02 |
BRPI0913334A2 (pt) | 2015-11-24 |
IL209652A0 (en) | 2011-02-28 |
CN102113073A (zh) | 2011-06-29 |
WO2009147002A3 (en) | 2010-04-01 |
TW201011794A (en) | 2010-03-16 |
DE102008026304A1 (de) | 2009-12-03 |
EP2286424A2 (en) | 2011-02-23 |
RU2543486C2 (ru) | 2015-03-10 |
WO2009147002A2 (en) | 2009-12-10 |
KR20110013527A (ko) | 2011-02-09 |
MX2010013120A (es) | 2010-12-20 |
RU2010154382A (ru) | 2012-07-20 |
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