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1. 发明授权

US08992787B2 Anode foils for electrolytic capacitors and methods for making same 有权
标题翻译：用于电解电容器的阳极箔及其制造方法
公开(公告)号：US08992787B2
公开(公告)日：2015-03-31
申请号：US13194760
申请日：2011-07-29
申请人： David R. Bowen , Ralph Jason Hemphill , Xiaofei Jiang , Corina Geiculescu , Tearl Stocker
发明人： David R. Bowen , Ralph Jason Hemphill , Xiaofei Jiang , Corina Geiculescu , Tearl Stocker
IPC分类号： C03C15/00 , H01G9/00 , H01G9/04
CPC分类号： H01G13/00 , H01G9/0029 , H01G9/04
摘要： Anode foils suitable for use in electrolytic capacitors, including those having multiple anode configurations, have improved strength, reduced brittleness, and increased capacitance compared to conventional anode foils for electrolytic capacitors. Exemplary methods of manufacturing an anode foil suitable for use in an electrolytic capacitor include disposing a resist material in a predetermined pattern on an exposed surface of an anode foil substrate such that a first portion of the exposed surface of the anode foil substrate is covered by the resist material, and a second portion of the exposed surface remains uncovered; polymerizing the resist material; exposing at least the second portion of the exposed surface to one or more etchants so as to form a plurality of tunnels; stripping the polymerized resist material; and widening at least a portion of the plurality of tunnels. The resist material may be deposited, for example, by ink-jet printing, stamping or screen printing.
摘要翻译：与用于电解电容器的常规阳极箔相比，适用于电解电容器的阳极箔，包括具有多个阳极配置的阳极箔具有改进的强度，降低的脆性和增加的电容。制造适用于电解电容器的阳极箔的示例性方法包括将阳极箔基板的暴露表面上的预定图案的抗蚀剂材料设置在阳极箔基板的暴露表面上，使得阳极箔基板的暴露表面的第一部分被抗蚀剂材料，并且暴露表面的第二部分保持未被覆盖; 聚合抗蚀剂材料; 将暴露表面的至少第二部分暴露于一个或多个蚀刻剂，以便形成多个隧道; 剥离聚合的抗蚀剂材料; 以及加宽所述多个隧道的至少一部分。抗蚀剂材料可以例如通过喷墨印刷，冲压或丝网印刷来沉积。

2. 发明申请

US20130026048A1 ANODE FOILS FOR ELECTROLYTIC CAPACITORS AND METHODS FOR MAKING SAME 有权
公开(公告)号：US20130026048A1
公开(公告)日：2013-01-31
申请号：US13194760
申请日：2011-07-29
申请人： David R. Bowen , Ralph Jason Hemphill , Xiaofei Jiang , Corina Geiculescu , Tearl Stocker
发明人： David R. Bowen , Ralph Jason Hemphill , Xiaofei Jiang , Corina Geiculescu , Tearl Stocker
IPC分类号： C25F3/02
CPC分类号： H01G13/00 , H01G9/0029 , H01G9/04
摘要： Anode foils suitable for use in electrolytic capacitors, including those having multiple anode configurations, have improved strength, reduced brittleness, and increased capacitance compared to conventional anode foils for electrolytic capacitors. Exemplary methods of manufacturing an anode foil suitable for use in an electrolytic capacitor include disposing a resist material in a predetermined pattern on an exposed surface of an anode foil substrate such that a first portion of the exposed surface of the anode foil substrate is covered by the resist material, and a second portion of the exposed surface remains uncovered; polymerizing the resist material; exposing at least the second portion of the exposed surface to one or more etchants so as to form a plurality of tunnels; stripping the polymerized resist material; and widening at least a portion of the plurality of tunnels. The resist material may be deposited, for example, by ink-jet printing, stamping or screen printing.

3. 发明授权

US06802954B1 Creation of porous anode foil by means of an electrochemical drilling process 有权
标题翻译：通过电化学钻孔工艺制造多孔阳极箔
公开(公告)号：US06802954B1
公开(公告)日：2004-10-12
申请号：US10199846
申请日：2002-07-18
申请人： Ralph Jason Hemphill , Thomas V. Graham , Thomas F. Strange
发明人： Ralph Jason Hemphill , Thomas V. Graham , Thomas F. Strange
IPC分类号： B23H1100
CPC分类号： G06Q10/10 , C25F3/02 , C25F3/04 , C25F3/14 , H01G9/055
摘要： The present invention is directed to a method of creating porous anode foil for use in multiple anode stack configuration electrolytic capacitors, producing a pore structure that is microscopic in pore diameter and spacing, allowing for increased energy density with a minimal increase in ESR. Initially, an anode metal foil is etched, according to a conventional etch process, to produce an enlargement of surface area. The etched foil is then placed into the electrochemical drilling solution of the present invention. Alternatively, the etched foil may be masked, so that only small areas of the etched foil are exposed, prior to being placed in the electrochemical drilling solution. A DC power supply is used to electrochemically etch the masked or unmasked foil in the electrochemical drilling solution of the present invention such that pores on the order of a few microns diameter are produced through the foil. The electrochemical drilling solution of the present invention consists of 1 to 15% by weight sodium chloride, preferably 5% by weight, and 10 to 5000 PPM of a surface passivator, such as sodium nitrate or phosphoric acid, preferably 500 PPM. Finally, the foil pores are widened and the foil is formed to the intended use voltage according to conventional widening and forming processes. When used in conjunction with an electrochemical etch preceding it and an electrochemical widening step following it, the electrochemical drilling step of the present invention results in an electrically porous foil which maintains the high capacitance gain produced by the etching and widening steps alone, but, when used in a multiple anode stack configuration, exhibits a reduced equivalent series resistance.
摘要翻译：本发明涉及一种用于多阳极堆叠配置电解电容器的多孔阳极箔的制造方法，其产生孔径和间距微观的孔结构，从而允许以ESR最小增加的能量密度增加。首先，根据常规的蚀刻工艺蚀刻阳极金属箔，以产生表面积的增大。然后将蚀刻的箔放入本发明的电化学钻井溶液中。或者，蚀刻的箔可以被掩蔽，使得在被放置在电化学钻井溶液中之前，只有小的蚀刻箔的面积被暴露。直流电源用于电化学蚀刻本发明的电化学钻井溶液中的掩蔽或未掩模的箔，使得通过箔产生约几微米直径的孔。本发明的电化学钻井溶液由1至15重量％的氯化钠，优选5重量％和10至5000PPM的表面钝化剂，例如硝酸钠或磷酸，优选500PPM组成。最后，根据传统的加宽和成形方法，箔片孔被加宽并且箔形成为预期的使用电压。当与其前面的电化学蚀刻和其后的电化学扩展步骤结合使用时，本发明的电化学钻孔步骤产生电极多孔箔，其保持仅由蚀刻和扩大步骤产生的高电容增益，但是当用于多重阳极堆叠配置中，具有降低的等效串联电阻。

4. 发明授权

US06197184B1 Method of producing high quality oxide for electrolytic capacitors 有权
标题翻译：电解电容器生产高品质氧化物的方法
公开(公告)号：US06197184B1
公开(公告)日：2001-03-06
申请号：US09183442
申请日：1998-10-29
申请人： Ralph Jason Hemphill , Thomas Flavian Strange
发明人： Ralph Jason Hemphill , Thomas Flavian Strange
IPC分类号： C25D900
CPC分类号： H01G9/0032 , C25D11/02
摘要： An oxide dissolving acid dip is integrated into an anodic foil formation process. After a foil, either etched or un-etched, is hydrated in a bath of deionized water at an elevated temperature, the foil is then dipped in an organic acid mixture. Next, an oxide layer formation step is utilized to form a barrier oxide layer on a surface of the foil. Next, an oxide dissolving acid dip is utilized to selectively remove a diffuse hydrate layer formed in the formation process. The diffuse hydrate layer is responsible for the reduction of capacitance of the anodic foil. By the use of this oxide dissolving acid dip in conjunction with an organic acid dip, the foil exhibits reduced leakage current properties, while maintaining its capacitance. The treated foil can then be incorporated into a high voltage electrolytic capacitor suitable for use in an implantable cardioverter defibrillator.
摘要翻译：将氧化物溶解酸浸液整合到阳极箔形成工艺中。在蚀刻或未蚀刻的箔之后，在升高的温度下在去离子水浴中水合，然后将箔浸入有机酸混合物中。接下来，利用氧化物层形成步骤在箔的表面上形成阻挡氧化物层。接下来，使用溶解酸浸的氧化物来选择性地去除在形成过程中形成的扩散水合物层。扩散水合物层负责减少阳极箔的电容。通过使用这种氧化物溶解酸浸渍与有机酸浸渍结合，箔保持其电容，显示出降低的漏电流特性。然后将经处理的箔并入适用于可植入心律转复除颤器的高压电解电容器中。

5. 发明授权

US06736956B1 Non-uniform etching of anode foil to produce higher capacitance gain without sacrificing foil strength 有权
标题翻译：阳极箔的不均匀蚀刻产生较高的电容增益而不牺牲箔强度
公开(公告)号：US06736956B1
公开(公告)日：2004-05-18
申请号：US09851298
申请日：2001-05-07
申请人： Ralph Jason Hemphill , Thomas V. Graham , Thomas Flavian Strange
发明人： Ralph Jason Hemphill , Thomas V. Graham , Thomas Flavian Strange
IPC分类号： B23H1100
CPC分类号： H01G9/055 , B23H9/00 , C25D3/04 , C25D3/08
摘要： The present invention is directed to a method of etching anode foil in a non-uniform manner which increases the overall capacitance gain of the foil while retaining foil strength. In particular, by using a mask to protect a mesh grid of the foil from further etching, a previously etched foil can be further etched, prior to the widening step. Alternatively, the mask may be used in the initial etch, eliminating the need for the second process. In effect the foil may be etched to a higher degree in select regions, leaving a web of more lightly etched foil defined by the mask to retain strength. According to the present invention, the foil is placed between two masks with a grid of openings which expose the foil in these areas to the etching solution. The exposed area can be as little as 10% of the total foil to as much as 95% of the total foil, preferably 30% to 70% of the total foil area. The pattern is configured in such a way that the enhanced area does not create large scale strength defects such as perforation holes and is held in a pattern such as a hexagonal array, random array or radial burst array, such that the exposed area perimeter can be round, square, hexagonal, or triangular. The higher surface area in the exposed areas does not significantly decrease the strength of the foil as a whole, such that the method according to the present invention increases capacitance of the anode foil without significantly decreasing the strength of the foil.
摘要翻译：本发明涉及一种以不均匀的方式蚀刻阳极箔的方法，其增加箔的整体电容增益同时保持箔强度。特别地，通过使用掩模来保护箔的网格网进一步蚀刻，可以在加宽步骤之前进一步蚀刻预蚀刻的箔。或者，可以在初始蚀刻中使用掩模，消除对第二工艺的需要。实际上，箔可以在选择区域中被蚀刻到较高程度，留下由掩模限定的更轻微蚀刻的箔的网以保持强度。根据本发明，箔被放置在具有开口格栅的两个掩模之间，这些开口将这些区域中的箔暴露于蚀刻溶液。曝光面积可以少于总箔的10％，高达总箔的95％，优选总箔面积的30％至70％。该图案被配置成使得增强区域不产生诸如穿孔的大规模强度缺陷，并且被保持在诸如六边形阵列，随机阵列或径向突发阵列的图案中，使得暴露的区域周长可以是圆形，正方形，六边形或三角形。暴露区域中较高的表面积并不会显着降低箔的整体强度，使得根据本发明的方法增加了阳极箔的电容而不显着降低箔的强度。

6. 发明授权

US06238810B1 Process for using surface active agents to produce high etch gains for electrolytic capacitor manufacturing 有权
标题翻译：使用表面活性剂产生电解电容器制造高蚀刻增益的方法
公开(公告)号：US06238810B1
公开(公告)日：2001-05-29
申请号：US09287297
申请日：1999-04-07
申请人： Thomas Flavian Strange , Ralph Jason Hemphill
发明人： Thomas Flavian Strange , Ralph Jason Hemphill
IPC分类号： B23H900
CPC分类号： H01G9/055 , C25F3/04 , Y10T428/12993
摘要： A surface active, viscosity modifying agent is used to promote additional tunnel initiation during the etching of high purity cubicity anode foil, preferably aluminum anode foil, to render it suitable for use in electrolytic capacitors. The anode foil is etched in the electrolyte bath composition by passing a charge rough the bath, resulting in an anode foil having a higher capacitance than foils etched using known methods or etching compositions. The etched anode foil is suitable for use in an electrolytic capacitor.
摘要翻译：在高纯度立方阳极箔（优选铝阳极箔）的蚀刻期间，使用表面活性的粘度改进剂促进额外的隧道起始，使其适用于电解电容器。通过使电荷粗糙地浸入浴中，在电解质浴组合物中蚀刻阳极箔，得到具有比使用已知方法或蚀刻组合物蚀刻的箔高的电容的阳极箔。蚀刻的阳极箔适用于电解电容器。

7. 发明授权

US06168706A Process for producing high etch gains for electrolytic capacitor manufacturing 有权
标题翻译：用于生产电解电容器制造高蚀刻增益的工艺
公开(公告)号：US06168706A
公开(公告)日：2001-01-02
申请号：US09210314
申请日：1998-12-11
申请人： Ralph Jason Hemphill , Thomas Flavian Strange
发明人： Ralph Jason Hemphill , Thomas Flavian Strange
IPC分类号： C25F302
CPC分类号： H01G9/045 , C25F3/04 , Y10T428/12361 , Y10T428/12431 , Y10T428/12993
摘要： Aluminum anode foil is etched using a process of treating the foil in an electrolyte bath composition comprising aluminum chloride hexahydrate, hydrochloric acid, sulfuric acid and perchloric acid or perchlorate. The anode foil is etched in the electrolyte bath composition by passing a direct current (DC) through the bath, resulting in an aluminum anode foil having a higher capacitance and/or metal strength than using known methods or etching compositions. The etched anode foil is suitable for use in an electrolytic capacitor.
摘要翻译：使用在包含氯化铝六水合物，盐酸，硫酸和高氯酸或高氯酸盐的电解液浴组合物中处理箔的方法蚀刻铝阳极箔。通过使直流（DC）通过浴，在电解液浴组合物中蚀刻阳极箔，得到具有比使用已知方法或蚀刻组合物更高的电容和/或金属强度的铝阳极箔。蚀刻的阳极箔适用于电解电容器。

8. 发明授权

US08535507B1 Electrochemical drilling system and process for improving electrical porosity of etched anode foil 有权
标题翻译：电化学钻井系统和改进蚀刻阳极箔电气孔隙的方法
公开(公告)号：US08535507B1
公开(公告)日：2013-09-17
申请号：US11972792
申请日：2008-01-11
申请人： Ralph Jason Hemphill , Thomas F. Strange
发明人： Ralph Jason Hemphill , Thomas F. Strange
IPC分类号： B23H3/00 , B23H7/00 , C25F3/00 , C25D5/00 , C25D11/04 , H01G9/00 , B31D3/00
CPC分类号： C25F7/02 , C25F3/02 , H01G9/0032 , H01G9/055
摘要： A process for creating porous anode foil for use in an electrolytic capacitor of an implantable cardioverter defibrillator is provided. The process includes electrochemical drilling a plurality of etched metal foils in sequence one after the other in a bath containing electrochemical drilling (ECD) solution initially having a pH of less than 5. Alternatively, an etched foil sheet may be passed through the bath in a substantially continuous manner such that a portion of said etched foil sheet is in contact with the ECD solution is electrochemically drilled to generate pores. Electrochemical drilling is achieved when a current is passed to the foil or portion of the foil sheet in solution. ECD replenishment solution having a pH of less than about 5 is added from a feed reservoir to the bath at such a rate so as to maintain a pH in the ECD solution in the bath of less than about 5, and ECD solution in the bath is removed to a waste reservoir at the substantially the same rate as the addition of the ECD replenishment solution to the bath.
摘要翻译：提供一种用于制造可植入式心律转复除颤器的电解电容器的多孔阳极箔的方法。该方法包括在最初具有小于5的pH的电化学钻孔（ECD）溶液的浴中依次依次电化学钻孔多个蚀刻的金属箔。或者，蚀刻的箔片可以通过浴中基本上连续的方式使得所述蚀刻的箔片的一部分与ECD溶液接触，进行电化学钻孔以产生孔。当电流通过溶液中的箔片或箔片的一部分时，实现电化学钻孔。将pH小于约5的ECD补充溶液以一定的速率从进料储存器加入到浴中，以便将浴中的ECD溶液中的pH保持在小于约5，浴中的ECD溶液为以与向浴中添加ECD补充溶液基本相同的速率移动到废物储存器。

9. 发明授权

US06858126B1 High capacitance anode and system and method for making same 有权
标题翻译：高电容阳极及其制造方法
公开(公告)号：US06858126B1
公开(公告)日：2005-02-22
申请号：US10289580
申请日：2002-11-06
申请人： Ralph Jason Hemphill , Thomas Flavian Strange
发明人： Ralph Jason Hemphill , Thomas Flavian Strange
IPC分类号： H01G9/04 , H01G9/055 , B23H11/00 , B23H3/00
CPC分类号： H01G9/055 , C25F3/02 , C25F3/04
摘要： A method of producing electrodes for electrolytic capacitors by etching metal foil in a low pH etching electrolyte is disclosed. The low pH electrolyte is an aqueous solution, which comprises hydrochloric acid, glycerol, sodium perchlorate or perchloric acid, sodium persulfate and titanium (111) chloride. Anode foils etched according to the method of the invention maintain high capacitance gains, electrical porosity and strength. The electrical porosity of the etched foils is sufficiently high such that the overall Equivalent Series Resistance (ESR) is not increased in multilayer anodes configurations. Also described is a low pH electrolyte bath composition. Anode foils etched according to the present invention and electrolytic capacitors incorporating the etched anode foils are also disclosed.
摘要翻译：公开了一种通过在低pH腐蚀电解质中蚀刻金属箔来生产电解电容器用电极的方法。低pH电解质是水溶液，其包括盐酸，甘油，高氯酸钠或高氯酸，过硫酸钠和氯化钛（111）。根据本发明的方法蚀刻的阳极箔保持高电容增益，电孔隙率和强度。蚀刻箔的电气孔隙度足够高，使得多层阳极配置中的整体等效串联电阻（ESR）不增加。还描述了低pH电解质浴组合物。还公开了根据本发明蚀刻的阳极箔和结合有蚀刻的阳极箔的电解电容器。

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