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公开(公告)号：WO0221547A3
公开(公告)日：2003-01-16
申请号：PCT/US0127722
申请日：2001-09-07
Applicant: KEMET ELECTRONICS CORP , LESSNER PHILIP MICHAEL , HAHN RANDOLPH STEPHEN , MELODY BRIAN JOHN , REED ERIK KARLSEN , KINARD JOHN TONY
Inventor： LESSNER PHILIP MICHAEL , HAHN RANDOLPH STEPHEN , MELODY BRIAN JOHN , REED ERIK KARLSEN , KINARD JOHN TONY
CPC classification number: H01G9/0036 , C25D11/26 , H01B1/122 , H01G9/025 , H01G11/48 , H01G11/56 , Y02E60/13
Abstract: A process for isolating flaw sites in the dielectric of solid electrolytic capacitor comprising immersing a conductive polymer impregnated capacitor in an electrolyte solution, and then alternately subjecting the conductive polymer impregnated capacitor to a high voltage and a low voltage; wherein the high voltage is between about 10 volts and 50 volts, and the low voltage is between about 0 volts and the voltage corresponding to 90 % of the anodization voltage for pellets anodized at less than 20 volts, or the voltage at which the current drops to 50 % of the peak voltage current for pellets anodized at voltages greater than or equal to 20 volts. The period of time at or above the anodization voltage is relatively short to prevent damaging the dielectric film.
Abstract translation: 一种用于隔离固体电解电容器的电介质中的缺陷位置的方法，包括将导电聚合物浸渍的电容器浸入电解质溶液中，然后交替地使导电聚合物浸渍的电容器经受高压和低电压; 其中高电压介于约10伏和50伏特之间，并且低电压在约0伏之间，并且对应于阳极氧化电压的阳极氧化电压的90％的电压为小于20伏特阳极氧化的电池，或电流下降的电压 到大于或等于20伏特的电池阳极氧化的颗粒的峰值电压电流的50％。 阳极氧化电压以上的时间段相对较短，以防止损坏电介质膜。
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Patent Agency Ranking
公开(公告)号：GB2298656A
公开(公告)日：1996-09-11
申请号：GB9600177
申请日：1996-01-05
Applicant: KEMET ELECTRONICS CORP
Inventor： HAHN RANDOLPH STEPHEN , MELODY BRIAN JOHN , HENLEY JR JOHN DEWITT , PIPER JOHN , POORE SHELBY JEAN , SU TSUNG-YUAN , KINARD JOHN TONY
Abstract: The present invention provides a manganese nitrate coating having high conductivity and solid tantalum anode capacitors having low ESR by using an oven atmosphere which effectively treats all of the anodes in the oven. The manganese nitrate coating of the present invention is produced under highly oxidizing conditions by providing one or more oxidizing agents more active than nitrogen dioxide in the atmosphere of the oven during pyrolysis of manganese nitrate. The oxidizing agents include nitric acid, hydrogen peroxide, ozone, and mixtures thereof.
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公开(公告)号：GB2357513A
公开(公告)日：2001-06-27
申请号：GB0105523
申请日：1999-07-02
Applicant: KEMET ELECTRONICS CORP
Inventor： LESSNER PHILIP M , SU TSUNG-YUAN , RAJASEKARAN VEERIYA , HAHN RANDOLPH STEPHEN
Abstract: Conductive polymers are prepared from a stabilized solution containing a monomer, an Fe(II) oxidizing agent, and a mixed solvent. The solvents are selected to stabilize the Fe(III) oxidizing agent and monomer in solution while allowing highly conducting polymers to be produced upon evaporating the lower-boiling solvent. The higher-boiling solvent does not appreciably complex with Fe(III), while the lower-boiling solvent forms a weak complex with Fe(III). The mixed-solvent system of the present invention may be used for preparing a conductive polymer counter electrode in a solid tantalum capacitor by polymerizing the monomer inside a porous tantalum pellet.
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公开(公告)号：GB2298656B
公开(公告)日：1998-05-27
申请号：GB9600177
申请日：1996-01-05
Applicant: KEMET ELECTRONICS CORP
Inventor： HAHN RANDOLPH STEPHEN , MELODY BRIAN JOHN , HENLEY JR JOHN DEWITT , PIPER JOHN , POORE SHELBY JEAN , SU TSUNG-YUAN , KINARD JOHN TONY
Abstract: The present invention provides a manganese nitrate coating having high conductivity and solid tantalum anode capacitors having low ESR by using an oven atmosphere which effectively treats all of the anodes in the oven. The manganese nitrate coating of the present invention is produced under highly oxidizing conditions by providing one or more oxidizing agents more active than nitrogen dioxide in the atmosphere of the oven during pyrolysis of manganese nitrate. The oxidizing agents include nitric acid, hydrogen peroxide, ozone, and mixtures thereof.
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公开(公告)号：AU8885501A
公开(公告)日：2002-03-22
申请号：AU8885501
申请日：2001-09-07
Applicant: KEMET ELECTRONICS CORP
Inventor： LESSNER PHILIP MICHAEL , HAHN RANDOLPH STEPHEN , MELODY BRIAN JOHN , REED ERIK KARLSEN , KINARD JOHN TONY
Abstract: A process for isolating flaw sites in the dielectric of solid electrolytic capacitor comprising immersing a conductive polymer impregnated capacitor in an electrolyte solution, and then alternately subjecting the conductive polymer impregnated capacitor to a high voltage and a low voltage; wherein the high voltage is between about 10 volts and 50 volts, and the low voltage is between about 0 volts and the voltage corresponding to 90% of the anodization voltage for pellets anodized at less than 20 volts, or the voltage at which the current drops to 50% of the peak voltage current for pellets anodized at voltages greater than or equal to 20 volts. The period of time at or above the anodization voltage is relatively short to prevent damaging the dielectric film.
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公开(公告)号：GB2360129A
公开(公告)日：2001-09-12
申请号：GB0108966
申请日：1999-09-29
Applicant: KEMET ELECTRONICS CORP
Inventor： HAHN RANDOLPH STEPHEN , LESSNER PHILIP M , RAJASEKARAN VEERIYA
Abstract: The adhesion of a conductive polymer film to an oxidized porous pellet anode is improved by the incorporation of a silane coupling agent in the polymer impregnating solution. The incorporation of the silane coupling agent also decreases leakage current and dissipation factor. Suitable silanes are those of the general formula (R 1 -R 3 )-Si-(OR 2 ) 3 . Each of R 2 and R 3 is a C 1 -C 6 alkyl group such as methyl, ethyl, or propyl. R 1 can be chosen from a wide variety of organic functional groups such as epoxy, glycidoxy, amino, and pyrrole. The most preferred silane is 3-glycidoxypropyltrimethoxysilane.
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