Process of preparing a solid electrolytic capacitor containing a conductive polymer counter electrode
    11.
    发明授权
    Process of preparing a solid electrolytic capacitor containing a conductive polymer counter electrode 有权
    制备含有导电聚合物对电极的固体电解电容器的方法

    公开(公告)号:US06391379B1

    公开(公告)日:2002-05-21

    申请号:US09148486

    申请日:1998-09-04

    IPC分类号: B05D512

    摘要: The present invention relates to a method for making a solid electrolytic capacitor having a low equivalent series resistance by impregnating a porous capacitor pellet with conductive polymer. An oxidized pellet is dipped in a high concentration conductive polymer solution to deposit the polymer in doped (conductive) form. The solution also contains a crosslinking agent to prevent redissolution of the polymer when the pellet is re-dipped. After dipping, the solvent in the polymer solution is evaporated and a conductive film formed. In order to evaporate the solvent quickly, the solvent should have a boiling point of 80-220° C. and preferably a boiling point of 100-150° C. The conductive polymer film has a low resistivity (less than 1 ohm-cm, preferably less than 0.2 ohm-cm).

    摘要翻译: 本发明涉及一种制造具有低等效串联电阻的固体电解电容器的方法,该方法是用导电聚合物浸渍多孔电容器片。 将氧化的颗粒浸入高浓度的导电聚合物溶液中以沉积聚合物的掺杂(导电)形式。 该溶液还含有一种交联剂,以防止当沉淀物重新浸渍时聚合物的再溶解。 浸渍后,蒸发聚合物溶液中的溶剂并形成导电膜。 为了快速蒸发溶剂,溶剂的沸点应为80-220℃,优选沸点为100-150℃。导电聚合物膜具有低电阻率(小于1欧姆 - 厘米2, 优选小于0.2欧姆 - 厘米)。

    Chemical oxidative preparation of conductive polymers
    18.
    发明授权
    Chemical oxidative preparation of conductive polymers 有权
    导电聚合物的化学氧化制备

    公开(公告)号:US06334966B1

    公开(公告)日:2002-01-01

    申请号:US09705913

    申请日:2000-11-06

    IPC分类号: H01B112

    摘要: An intrinsically conductive polymer is prepared with a chemical oxidative process. The polymer is prepared by first dipping or coating a substrate with an Fe(III)-containing oxidizer solution and drying. The substrate is then dipped or coated with a monomer, such as 3,4-ethylenedioxythiophene solution, and reacted to form the conductive polymer. The monomer is dissolved in a solvent in which it has a high solubility but in which the Fe(III)-containing oxidizer has low solubility. This minimizes cross-contamination of the monomer and oxidizer dipping solutions thereby making this process suitable for high volume production. Dissolving the monomer in a solvent allows control over the stoichiometric ratio of monomer to oxidizer and prevents an excess of monomer thereby facilitating the removal of any unreacted monomer by water. The substrate is then dipped in an aqueous solution of para-toluenesulfonic acid to facilitate the removal of Fe(II) byproducts by enhancing their solubility in water and then the substrate may be washed with an aqueous solution or pure water. The process produces low ESR and low leakage valve metal capacitors with conductive polymer cathodes.

    摘要翻译: 用化学氧化法制备固有导电的聚合物。 通过首先用含Fe(III)的氧化剂溶液浸渍或涂覆基底并干燥来制备聚合物。 然后将基材浸渍或涂覆单体如3,4-亚乙基二氧噻吩溶液,并反应形成导电聚合物。 将单体溶解在其溶解度高的溶剂中,其中含有Fe(III)的氧化剂具有低溶解度。 这使得单体和氧化剂浸渍溶液的交叉污染最小化,从而使得该方法适合于大批量生产。 将单体溶解在溶剂中允许控制单体与氧化剂的化学计量比,并防止过量的单体,从而有助于通过水除去任何未反应的单体。 然后将底物浸入对甲苯磺酸的水溶液中,以便通过增加其在水中的溶解度来除去Fe(II)副产物,然后用水溶液或纯水洗涤底物。 该过程产生低导电聚合物阴极的低ESR和低泄漏阀金属电容器。

    Electrolyte for anodizing valve metals
    19.
    发明授权
    Electrolyte for anodizing valve metals 失效
    电解液用于阳极氧化阀门金属

    公开(公告)号:US5935408A

    公开(公告)日:1999-08-10

    申请号:US182992

    申请日:1998-10-30

    IPC分类号: C25D11/02 C25D11/06 C25D11/26

    CPC分类号: C25D11/26

    摘要: An electrolytic solution comprising glycerine and dibasic potassium phosphate. The electrolytic solution has a water content of less than 1000 ppm and is prepared by mixing the glycerine and the dibasic potassium phosphate and then heating to about 150 to 180.degree. C. for about 1 to 12 hours. A method of anodizing a metal comprising forming a film on the metal with an electrolytic solution comprising glycerine and dibasic potassium phosphate. The metal is preferably a valve metal, such as tantalum, and the film is formed at a temperature of 150.degree. C. or higher.

    摘要翻译: 包含甘油和磷酸氢二钾的电解液。 电解液的含水量小于1000ppm,并通过将甘油和磷酸氢二钾混合,然后加热至约150至180℃约1至12小时来制备。 一种阳极氧化金属的方法,包括在金属上形成含有甘油和磷酸氢二钾的电解液的膜。 该金属优选为阀金属,例如钽,并且该膜在150℃或更高的温度下形成。