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WO2024143346A1 - Condensateur électrolytique et procédé de production de condensateur électrolytique - Google Patents

Condensateur électrolytique et procédé de production de condensateur électrolytique Download PDF

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Publication number
WO2024143346A1
WO2024143346A1 PCT/JP2023/046611 JP2023046611W WO2024143346A1 WO 2024143346 A1 WO2024143346 A1 WO 2024143346A1 JP 2023046611 W JP2023046611 W JP 2023046611W WO 2024143346 A1 WO2024143346 A1 WO 2024143346A1
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Prior art keywords
separator
foil
electrolytic capacitor
region
flow path
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English (en)
Japanese (ja)
Inventor
泰洋 西村
宗史 門川
満久 吉村
順一 南部
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Panasonic Intellectual Property Management Co Ltd
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Panasonic Intellectual Property Management Co Ltd
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Publication of WO2024143346A1 publication Critical patent/WO2024143346A1/fr
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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
    • 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
    • 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
    • H01G9/04—Electrodes or formation of dielectric layers thereon
    • H01G9/048—Electrodes or formation of dielectric layers thereon characterised by their structure

Definitions

  • An example of a laminated electrolytic capacitor includes an anode foil, a cathode foil, and a separator and electrolyte disposed between them. Electrolytic capacitors that use an electrolytic solution and a conductive polymer as the electrolyte (hybrid capacitors) are known.
  • Patent document 1 JP Patent Publication 2006-80112 A discloses claim 1 of an electrolytic capacitor comprising a capacitor element formed by winding an anode foil whose surface has been roughened to form a dielectric oxide film and a cathode foil whose surface has been roughened with a conductive separator that has been made conductive by adhering a conductive polymer between them, a cylindrical metal case with a bottom that houses the capacitor element together with a driving electrolyte, and a sealing member that seals the opening of the metal case, the electrolytic capacitor comprising: an electrolytic capacitor in which the conductive separator has an electrical conductivity of 0.5 S/cm or more.
  • one of the objectives of this disclosure is to provide an electrolytic capacitor that is easy to manufacture and has excellent characteristics.
  • the electrolytic capacitor includes a laminate and a liquid component impregnated in the laminate, and the laminate includes an anode foil having a dielectric layer formed on its surface, a cathode foil, a separator disposed between the anode foil and the cathode foil, and a conductive polymer disposed within the separator.
  • a flow path for the liquid component is formed in at least one selected from the group consisting of the anode foil, the cathode foil, and the separator, and one end of the flow path is exposed on an end face of the laminate.
  • the method includes a step (i) of forming a laminate by stacking an anode foil having a dielectric layer formed on its surface, a cathode foil, and a separator having a conductive polymer disposed therein, with the separator disposed between the anode foil and the cathode foil, and a step (ii) of impregnating the laminate with a liquid component, and a flow path for the liquid component is formed in at least one selected from the group consisting of the anode foil, the cathode foil, and the separator.
  • FIG. 1 is a cross-sectional view illustrating an example of the electrolytic capacitor according to the first embodiment.
  • FIG. 2 is a perspective view that typically illustrates a capacitor element included in the electrolytic capacitor shown in FIG.
  • FIG. 3A is a top view that illustrates an example of a separator used in the electrolytic capacitor of embodiment 1.
  • FIG. 3B is a schematic cross-sectional view taken along line IIIB-IIIB in FIG. 3A.
  • FIG. 4A is a top view diagrammatically illustrating another example of the separator used in the electrolytic capacitor of Embodiment 1.
  • FIG. 4B is a top view diagrammatically illustrating another example of the separator used in the electrolytic capacitor of embodiment 1.
  • FIG. 4A is a top view diagrammatically illustrating another example of the separator used in the electrolytic capacitor of embodiment 1.
  • FIG. 4C is a top view diagrammatically illustrating another example of the separator used in the electrolytic capacitor of embodiment 1.
  • FIG. 5A is a top view that illustrates an example of a separator used in the electrolytic capacitor of embodiment 2.
  • FIG. 5B is a schematic cross-sectional view taken along line VB-VB in FIG. 3A.
  • FIG. 6A is a top view diagrammatically illustrating an example of a cathode foil used in the electrolytic capacitor of embodiment 3.
  • FIG. 6B is a schematic cross-sectional view taken along line VIB-VIB in FIG. 6A.
  • the electrolytic capacitor according to this embodiment may be referred to as an electrolytic capacitor (E) below.
  • the electrolytic capacitor (E) includes a laminate and a liquid component impregnated in the laminate.
  • the laminate may be referred to as a "laminate (L)" below.
  • the laminate (L) includes an anode foil having a dielectric layer formed on its surface, a cathode foil, a separator disposed between the anode foil and the cathode foil, and a conductive polymer disposed in the separator.
  • a flow path for the liquid component is formed in at least one selected from the group consisting of the anode foil, the cathode foil, and the separator.
  • the flow path may be referred to as a "flow path (P)" below.
  • One end of the flow path (P) is exposed at an end face of the laminate (L). That is, one end of the flow path (P) may be open at the end face of the laminate (L).
  • the flow path (P) may be formed only in the separator, or only in the anode foil, or only in the cathode foil. Alternatively, the flow path (P) may be formed in the separator and either the anode foil or the cathode foil. Alternatively, the flow path (P) may be formed in all of the separator, anode foil, and cathode foil.
  • the length LPs of the flow path (P) in the width direction WDs of the separator may be 5% or more, 20% or more, 50% or more, or 70% or more of the width Ws of the separator, and may be 100% or less, or 80% or less.
  • LPs is 100% of Ws.
  • the length LPe of the flow path (P) in the width direction WDe of the electrode foil in which the flow path (P) is formed may be 5% or more, 20% or more, 50% or more, or 70% or more of the width We of the electrode foil, and may be 100% or less, or 80% or less.
  • LPe is 100% of We.
  • the portion of the separator that functions as the flow path (P) may be referred to as the first region, and the other portion may be referred to as the second region.
  • Liquid components also flow in the second region. However, compared to the first region, liquid components do not flow easily in the second region. In other words, the first region is a region through which liquid components flow more easily than the second region.
  • the separator may have a first region in which the conductive polymer is not disposed, and a second region in which the conductive polymer is disposed.
  • the first region can function as a flow path (P).
  • One end or both ends of the first region are exposed to the end face of the laminate (L).
  • the first region in which the conductive polymer is not disposed may be referred to as an "uncoated region.”
  • the separator may have a first region in which a groove is formed and a second region in which no groove is formed.
  • the first region in which a groove is formed can function as a flow path (P).
  • a separator including a flow path (P) may have both an uncoated portion and a groove.
  • a separator including a flow path (P) has only one of an uncoated portion and a groove.
  • a separator having a groove that functions as a flow path (P) may not include an uncoated portion that functions as a flow path (P).
  • the ratio Ds/Ts of the groove depth Ds to the separator thickness Ts in the second region where no grooves are formed may be 0.02 or more, 0.03 or more, 0.05 or more, or 0.10 or more, and may be 0.50 or less, 0.30 or less, or 0.20 or less.
  • the ratio Ds/Ts may be in the range of 0.02 to 0.50 (preferably in the range of 0.05 to 0.20).
  • the ratio Ds/Ts can be determined, for example, by cutting the capacitor and observing the cross section with an electron microscope.
  • the ratio R1 of the area of the first region to the surface area of the separator may be 1% or more, 3% or more, 5% or more, or 10% or more, or 50% or less, 30% or less, 25% or less, 20% or less, 15% or less, 10% or less, or 5% or less.
  • Increasing the ratio R1 makes it easier for the liquid component (L) to pass through the flow path (P).
  • Decreasing the ratio R1 increases the area in which the conductive polymer is arranged, and the effect of reducing ESR by the conductive polymer increases.
  • the ratio R1 is preferably in the range of 1 to 25%, more preferably in the range of 1 to 20% (for example, in the range of 5 to 20%), and particularly preferably in the range of 3% or more and 15% or less.
  • the area of the separator is the sum of the areas of both sides of the separator.
  • the area of one side of the separator is the area when the separator is viewed in a plane.
  • the area of one side of a rectangular separator is calculated by the product of the vertical length and the horizontal length.
  • the area of the first region and the area of the second region are the areas when viewed in a plan view.
  • the area of the first region is the sum of the area of the first region on one side of the separator and the area of the first region on the other side of the separator.
  • the first region (uncoated region or groove) functioning as a flow path (P) may include a plurality of linear regions. At least one end (e.g., one end or both ends) of each linear region is exposed at the end face of the laminate.
  • Each linear region may be straight or curved, or may be composed of a combination of straight and curved portions.
  • the first region may be formed to have a mottled pattern.
  • the width Wsp of the linear region that functions as a flow path (P) in the separator is not particularly limited.
  • the width Wsp is the width in a direction perpendicular to the direction in which the linear region extends (see FIG. 3A).
  • the width Wsp of the linear region may be 0.5 mm or more, or 1 mm or more, and may be 5 mm or less, or 3 mm or less.
  • the width Wsp of the linear region may be 30% or less, or 10% or less of the width of the separator.
  • the width Wsp of the linear region may be 0.1% or more, 0.5% or more, or 1.0% or more of the width of the separator.
  • the surface area of a foil is the sum of the areas of both sides of the foil.
  • the area of one side of a foil is the area when the foil is viewed in a planar view.
  • the area of one side of a rectangular foil is calculated by multiplying the length and width.
  • the area of a groove is the area when the groove is viewed in a planar view.
  • the area of a groove is the sum of the area of the grooves on one side of the foil and the area of the grooves on the other side of the foil.
  • the grooves in the separator may be formed before the conductive polymer is placed in the separator.
  • the grooves may be formed after the conductive polymer is placed in the separator. By forming the grooves after the conductive polymer is placed in the separator, it becomes easier to maintain the shape of the grooves.
  • the method of forming the grooves in the electrode foil is not limited.
  • the grooves may be formed by pressing the electrode foil (or the metal foil that will become the electrode foil) with a roller that has protrusions that correspond to the grooves.
  • Step (ii) is a step of impregnating the laminate with the liquid component.
  • the method of impregnating the laminate with the liquid component is not limited.
  • the laminate may be impregnated with the liquid component by immersing the laminate in the liquid component.
  • One end of the flow path (P) is exposed at the end face of the laminate. Therefore, the liquid component is easily impregnated into the laminate through the flow path (P).
  • one end of the flow path (P) is exposed at least at the end face of the laminate that is immersed in the liquid component. For example, when the end face opposite to the side where the lead protrudes is immersed in the liquid component, it is preferable that one end of the flow path (P) is exposed at the end face.
  • the dielectric layer is formed on the surface of the anode foil.
  • the dielectric layer is preferably formed on the roughened surface (porous portion) of the metal foil.
  • the method of forming the dielectric layer is not particularly limited, and the dielectric layer may be formed by oxidizing the surface of the anode foil.
  • the dielectric layer may contain an oxide of a valve metal.
  • the dielectric layer may be formed by subjecting the anode foil to a chemical conversion treatment.
  • an aluminum oxide layer is formed by oxidizing the surface of the aluminum foil.
  • the cathode foil is not particularly limited as long as it functions as a cathode.
  • a metal foil can be used for the cathode foil.
  • the metal constituting the metal foil (cathode foil) may be a valve metal or an alloy containing a valve metal. Examples of the valve metal include the metals mentioned above.
  • the cathode foil may be an aluminum foil.
  • the surface of the cathode foil may be roughened.
  • the thickness of the cathode foil may be in the range of 15 ⁇ m to 300 ⁇ m (for example, in the range of 20 ⁇ m to 150 ⁇ m).
  • the separator preferably includes an insulating nonwoven fabric, and may be an insulating nonwoven fabric.
  • the insulating nonwoven fabric is not particularly limited, and a nonwoven fabric used in a known electrolytic capacitor may be used.
  • the conductive polymer arranged in the nonwoven fabric may be arranged on the fibers constituting the nonwoven fabric.
  • the thickness of the separator is not particularly limited, and may be in the range of 10 to 300 ⁇ m (for example, in the range of 50 to 200 ⁇ m).
  • the separator 13 includes a plurality of linear first regions 13a and the remaining second regions 13b.
  • FIG. 3A shows the width Wsp of the linear first regions 13a.
  • the first regions 13a are regions where no conductive polymer is disposed, and function as flow paths (P).
  • the second regions 13b are regions where a conductive polymer is disposed.
  • the separator 13 shown in FIG. 3A can be formed by disposing a conductive polymer only in the portions that will become the second regions 13b.
  • the pattern of the grooves 13g is not limited to the pattern shown in FIG. 5A.
  • the pattern of the grooves 13g may be the pattern described in embodiment 1 for the first region 13a.
  • the pattern of the grooves 13g may be the same pattern as the first region 13a shown in FIGS. 4A to 4C.
  • FIG. 5B shows an example in which the grooves 13g formed on one side of the separator 13 and the grooves 13g formed on the other side are formed symmetrically so as to face each other.
  • the grooves 13g formed on one side and the grooves 13g formed on the other side may be formed asymmetrically (the same applies to the grooves described in embodiment 3).
  • a groove serving as a flow path (P) is formed in a cathode foil.
  • the electrolytic capacitor of the third embodiment differs from the electrolytic capacitor 100 of the first embodiment only in that a flow path (P) is not formed in the separator and that a groove is formed in the cathode foil, and therefore a duplicated description will be omitted.
  • FIG. 6A shows a top view of the cathode foil 12 used in embodiment 3, and FIG. 6B shows a cross-sectional view taken along line VIB-VIB in FIG. 6A.
  • a linear groove 12g is formed on the surface of the cathode foil 12.
  • This groove 12g functions as a flow path (P).
  • FIG. 6A shows the width Wep of the groove 12g.
  • both ends of the groove 12g reach different long sides 12s.
  • the length LPe of the groove 12g in the width direction WDe of the cathode foil 12 is 100% of the width We of the cathode foil 12.
  • grooves may be formed only in the anode foil 11.
  • grooves may be formed in both the anode foil 11 and the cathode foil 12.
  • the groove pattern formed in the anode foil 11 and the groove pattern formed in the cathode foil 12 may be the same or different.
  • An electrolytic capacitor, A laminate and a liquid component impregnated in the laminate comprises: an anode foil having a dielectric layer formed on a surface thereof; A cathode foil; a separator disposed between the anode foil and the cathode foil; A conductive polymer disposed in the separator, a flow path for the liquid component is formed in at least one selected from the group consisting of the anode foil, the cathode foil, and the separator; an electrolytic capacitor, one end of the flow path being exposed on an end surface of the laminate; (Technique 2) the separator has a first region in which the conductive polymer is not disposed and a second region in which the conductive polymer is disposed, The electrolytic capacitor according to claim 1, wherein the first region functions as the flow path.
  • the separator has a first region in which a groove is formed and a second region in which the groove is not formed, 3.
  • (Technique 4) 4.
  • (Technique 5) The electrolytic capacitor according to any one of Techniques 1 to 4, wherein a groove functioning as the flow path is formed on a surface of at least one foil selected from the group consisting of the anode foil and the cathode foil.
  • a method for manufacturing an electrolytic capacitor comprising the steps of: (i) forming a laminate by laminating an anode foil having a dielectric layer formed on a surface thereof, a cathode foil, and a separator having a conductive polymer disposed therein, such that the separator is disposed between the anode foil and the cathode foil; (ii) impregnating the laminate with a liquid component; a flow path for the liquid component is formed in at least one selected from the group consisting of the anode foil, the cathode foil, and the separator.
  • electrolytic capacitor according to the present disclosure will be described in further detail using examples. In these examples, multiple electrolytic capacitors were fabricated and evaluated.
  • Capacitor A1 The capacitor A1 was fabricated in the following manner. (1) Preparation of separator A cellulose nonwoven fabric (thickness: 50 ⁇ m) was impregnated with an aqueous dispersion of a conductive polymer in a mottled pattern and then dried. This resulted in a nonwoven fabric having a portion in which the conductive polymer was arranged and a portion in which the conductive polymer was not arranged (flow path). Poly(3,4-ethylenedioxythiophene) (PEDOT) doped with polystyrene sulfonic acid (PSS) was used as the conductive polymer. The obtained nonwoven fabric was cut to a predetermined size.
  • PEDOT poly(3,4-ethylenedioxythiophene)
  • PSS polystyrene sulfonic acid
  • the separator s1 was prepared so that the ratio R1 of the area of the first region (the region in which the conductive polymer was not arranged) to the surface area of the separator s1 was the value shown in Table 1.
  • the ratio R1 was adjusted by the area to be impregnated with the aqueous dispersion of the conductive polymer.
  • Capacitor Element An anode lead was connected to the anode foil, and a cathode lead was connected to the cathode foil. Next, the anode foil and the cathode foil were wound with the separator interposed therebetween to obtain a wound body. The wound body was subjected to a chemical conversion treatment to form a dielectric layer on the cut surface of the anode foil. A portion (flow path) where no conductive polymer was disposed was exposed on the end surface (end in the winding axis direction) of the wound body (laminate).
  • Capacitors A2 to A4 were fabricated in the same manner as capacitor A1, except that the ratio R1 of the area of the first region (the region where the conductive polymer is not disposed) to the surface area of separator s1 was changed by changing the area impregnated with the aqueous dispersion of the conductive polymer.
  • Capacitor A5 In the preparation of the capacitor A5, first, grooves (flow paths) were formed in a cellulose nonwoven fabric (thickness: 50 ⁇ m). The grooves were formed by passing a separator between two rotating rolls so as to be pressed by the two rolls. One of the two rolls had a convex portion corresponding to the groove. The grooves were striped as shown in FIG. 3A. The nonwoven fabric with the grooves formed therein was cut to a predetermined size. In this way, a separator s2 was obtained in which the flow paths were exposed on the end surface.
  • the separator s2 was prepared so that the ratio R1 of the area of the first region (the region in which the grooves are formed) to the area of the surface of the separator s2 was the value shown in Table 1.
  • the ratio R1 was adjusted by changing the area of the convex portion of the roll.
  • a wound body was produced in the same manner and under the same conditions as those for producing the wound body of capacitor A1, except that separator s2 was used instead of separator s1.
  • the above-mentioned groove (flow path) was exposed on the end surface of the wound body.
  • the obtained wound body was impregnated with an aqueous dispersion of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with polystyrene sulfonic acid (PSS), and then dried. This resulted in a conductive polymer being disposed between the anode foil and the cathode foil.
  • the wound body was then impregnated with an electrolyte.
  • the wound body impregnated with the electrolyte was housed in an outer casing. In this manner, capacitor A2 was obtained. Note that, similar to the production of capacitor A1, a chemical conversion treatment was performed on the produced wound body.
  • Capacitors A6 and A7 were produced in the same manner as capacitor A5, except that the ratio R1 of the area of the first region (the region in which the grooves are formed) to the area of the surface of separator s2 was changed by changing the area of the protrusions of the roll.
  • Capacitor A8 was produced in the same manner as the capacitor A2, except that the anode foil was changed.
  • the anode foil was produced in the following manner. First, an aluminum foil (thickness: 120 ⁇ m) was etched to roughen the surface. Then, the aluminum foil was chemically treated to form an aluminum oxide layer (dielectric layer) on the surface of the aluminum foil. Next, a groove (flow path) was formed in the aluminum foil after the chemical conversion treatment. The groove was formed in the same manner as the method for forming the groove in the separator s2. The groove in the aluminum foil was formed so that the ratio R2 of the area of the groove to the area of the surface of the aluminum foil was the value shown in Table 1. Next, the aluminum foil with the groove formed was cut to a predetermined size. In this manner, an anode foil with the groove (flow path) exposed on the end surface was obtained.
  • Capacitor A9 was produced in the same manner as capacitor A8, except that the ratio R2 of the area of the grooves to the area of the surface of the anode foil was changed by changing the area of the protrusions of the roll.
  • Capacitor C1 Capacitor C1 was fabricated in the same manner as capacitor A5, except that no grooves were formed in the separator.
  • ESR reduction rate (%) [ ⁇ R(C1) - R(A1) ⁇ ⁇ R(C1)] ⁇ 100
  • Capacity increase rate (%) [ ⁇ C(A1) - C(C1) ⁇ ⁇ C(C1)] ⁇ 100
  • Table 1 Some of the manufacturing conditions and the evaluation results are shown in Table 1.
  • Table 1 the larger the ESR reduction rate, the smaller the equivalent series resistance (ESR) and the better the capacitor characteristics.
  • ESR equivalent series resistance
  • Table 1 the larger the capacitance increase rate, the larger the electrostatic capacitance and the better the capacitor characteristics.
  • the "colored" column for the separator in Table 1 indicates that the conductive polymer is arranged in a mottled pattern.
  • Capacitors A1 to A9 are electrolytic capacitors (E) according to the present disclosure.
  • Capacitor C1 is a comparative example. As shown in Table 1, capacitors A1 to A9 exhibited good characteristics.
  • the present disclosure can be used in an electrolytic capacitor. Further, the present disclosure provides a separator having the above-mentioned flow path (P).
  • P flow path

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Abstract

La présente invention concerne un condensateur électrolytique (100) comprenant un stratifié et un composant liquide qui est imprégné dans le stratifié. Le stratifié comprend : une feuille d'électrode positive sur une surface de laquelle une couche diélectrique est formée ; une électrode négative; un séparateur disposé entre la feuille d'électrode positive et la feuille d'électrode négative ; et un polymère conducteur disposé à l'intérieur du séparateur. Un trajet d'écoulement pour un composant liquide est formé dans au moins un élément choisi dans le groupe constitué par la feuille d'électrode positive, la feuille d'électrode négative et le séparateur. Une extrémité du trajet d'écoulement est exposée au niveau d'une face d'extrémité du stratifié.
PCT/JP2023/046611 2022-12-26 2023-12-26 Condensateur électrolytique et procédé de production de condensateur électrolytique Ceased WO2024143346A1 (fr)

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US6424518B1 (en) * 1998-09-22 2002-07-23 Epcos Ag Aluminum electrolytic capacitor
DE10333550A1 (de) * 2003-07-23 2005-02-24 Epcos Ag Elektrochemischer Doppelschichtkondensator und Verfahren zur Imprägnierung eines Doppelschichtkondensators
JP2006186248A (ja) * 2004-12-28 2006-07-13 Elna Co Ltd アルミニウム固体電解コンデンサ素子
JP2013153024A (ja) * 2012-01-24 2013-08-08 Nichicon Corp 電解コンデンサおよびその製造方法
WO2015033566A1 (fr) * 2013-09-09 2015-03-12 パナソニックＩｐマネジメント株式会社 Dispositif de stockage d'électricité, méthode de fabrication associée, et séparateur
JP2016026371A (ja) * 2011-04-06 2016-02-12 エルジー・ケム・リミテッド セパレータ及びこれを備える電気化学素子
JP2016171257A (ja) * 2015-03-13 2016-09-23 カーリットホールディングス株式会社 電解コンデンサの製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03203216A (ja) * 1989-12-28 1991-09-04 Nippon Chemicon Corp 電解コンデンサ
US6424518B1 (en) * 1998-09-22 2002-07-23 Epcos Ag Aluminum electrolytic capacitor
DE10333550A1 (de) * 2003-07-23 2005-02-24 Epcos Ag Elektrochemischer Doppelschichtkondensator und Verfahren zur Imprägnierung eines Doppelschichtkondensators
JP2006186248A (ja) * 2004-12-28 2006-07-13 Elna Co Ltd アルミニウム固体電解コンデンサ素子
JP2016026371A (ja) * 2011-04-06 2016-02-12 エルジー・ケム・リミテッド セパレータ及びこれを備える電気化学素子
JP2013153024A (ja) * 2012-01-24 2013-08-08 Nichicon Corp 電解コンデンサおよびその製造方法
WO2015033566A1 (fr) * 2013-09-09 2015-03-12 パナソニックＩｐマネジメント株式会社 Dispositif de stockage d'électricité, méthode de fabrication associée, et séparateur
JP2016171257A (ja) * 2015-03-13 2016-09-23 カーリットホールディングス株式会社 電解コンデンサの製造方法

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