WO2017143736A1 - Aluminum electrolytic capacitor and manufacturing method thereof - Google Patents

Aluminum electrolytic capacitor and manufacturing method thereof Download PDF

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Publication number
WO2017143736A1
WO2017143736A1 PCT/CN2016/094921 CN2016094921W WO2017143736A1 WO 2017143736 A1 WO2017143736 A1 WO 2017143736A1 CN 2016094921 W CN2016094921 W CN 2016094921W WO 2017143736 A1 WO2017143736 A1 WO 2017143736A1
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Prior art keywords
electrolytic capacitor
aluminum electrolytic
dispersion
formula
capacitor according
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PCT/CN2016/094921
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French (fr)
Chinese (zh)
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赵大成
李付亚
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深圳新宙邦科技股份有限公司
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Publication of WO2017143736A1 publication Critical patent/WO2017143736A1/en

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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
    • H01G9/004—Details
    • H01G9/022—Electrolytes; Absorbents
    • H01G9/025—Solid electrolytes
    • 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
    • H01G9/0029—Processes of manufacture
    • H01G9/0036—Formation of the solid electrolyte layer
    • 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
    • H01G9/042—Electrodes or formation of dielectric layers thereon characterised by the material
    • H01G9/045—Electrodes or formation of dielectric layers thereon characterised by the material based on aluminium
    • 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
    • H01G9/15—Solid electrolytic capacitors

Definitions

  • the present application relates to the field of capacitors, and in particular to an aluminum electrolytic capacitor and a method of manufacturing the same.
  • the conductive polymer is a kind of polymer compound having a conjugated ⁇ bond structure, which is chemically or electrochemically doped to form an anion or a cation to form a conductive special polymer material, including polyacetylene, polythiophene, polypyrrole. , polyaniline, polyparaphenylene, polycarbazole and polyfluorene.
  • conductive polymers have both the photoelectric properties of metal and semiconductor materials, good polymer stability and mechanical properties, relatively light weight, and ease of processing.
  • the most successful conductive polymers currently used in the industrial field are polyaniline and polythiophene, especially poly(3,4-ethylenedioxythiophene) (PEDOT) among polythiophene derivatives, but also because of its high conductivity, Good environmental stability, transparency in doped state, etc., and widely used in electronic devices such as organic electro-display, organic solar cells and supercapacitors.
  • PEDOT poly(3,4-ethylenedioxythiophene)
  • the Chinese invention patent No. 200680033112.0 discloses a method for preparing an electrolytic capacitor, the method comprising at least the following steps: a) subjecting a porous electrode body of an electrode material to anodization to form a dielectric covering a surface of the electrode material; b) Applying a dispersion on the porous body, the porous body comprising at least a porous electrode body of an electrode material and a dielectric, the dispersion comprising at least particles and a dispersant of the conductive polymer; c) forming a solid electrolyte completely or partially covering the surface of the dielectric, The dispersant is at least partially removed and/or cured, the maximum anodization voltage of the porous electrode body during anodization is greater than 30 V, and the average particle diameter of the conductive polymer particles in the dispersion is from 1 to 100 nm.
  • the pore size of the porous anode becomes larger, and the lower the voltage, the smaller the pore diameter, and the smaller the pore size, the more difficult the extraction is.
  • the electrolytic capacitor of the above patent is used for a voltage lower than 30 V, the pore diameter of the porous anode is greatly reduced, so that normal discharge cannot be ensured.
  • the technical problem to be solved by the present invention is to provide an aluminum electrolytic capacitor capable of ensuring that the aperture is at a certain size under a low voltage condition to facilitate discharge, and further provides a method for preparing the above aluminum electrolytic capacitor.
  • the technical solution adopted by the present invention is:
  • An aluminum electrolytic capacitor having an oxidation voltage of not more than 30 V, comprising a dispersion comprising a conductive polymer and a dispersant, the conductive polymer having an average particle diameter of 5 to 40 nm.
  • the present invention also provides a method of preparing an aluminum electrolytic capacitor, the dispersion is applied to an electrode of the above-described aluminum electrolytic capacitor, and then the dispersant is partially or completely removed, or the dispersant is cured.
  • the number of removals or curings is one or more times.
  • the obtained aluminum electrolytic capacitor has the advantages of low loss, low equivalent series resistance, and low leakage.
  • the most critical idea of the present invention is that, by controlling the average particle diameter of the conductive polymer to be 5-40 nm under the condition that the anodization voltage is not more than 30 V, the technical effect of easy discharge is achieved.
  • the present invention provides an aluminum electrolytic capacitor having an oxidation voltage of not more than 30 V, including a dispersion, the dispersion comprising a conductive polymer and a dispersant, the conductive polymer having an average particle diameter of 5 -40 nm.
  • the present invention also provides a method of preparing an aluminum electrolytic capacitor, the dispersion is applied to an electrode of the above-described aluminum electrolytic capacitor, and then the dispersant is partially or completely removed, or the dispersant is cured.
  • the number of removals or curings is one or more times.
  • the obtained aluminum electrolytic capacitor has the advantages of low loss, low equivalent series resistance, and low leakage.
  • the conductive polymer includes a polythiophene derivative
  • the polythiophene derivative includes There are repeating units of the formula I and/or formula II, which have the structural formula:
  • A is an optionally substituted alkylene group having 1 to 5 carbon atoms
  • R is an optionally substituted direct bond having 5 to 12 carbon atoms or A branched cycloalkyl group, an optionally substituted straight or branched aryl group having 6 to 14 carbon atoms, an optionally substituted linear or branched aralkyl group having 7 to 18 carbon atoms, optionally substituted A linear or branched hydroxyalkyl group having a carbon number of 1 to 4 or a hydroxyl group
  • X is an integer of 0-8.
  • A binds to several A groups, these groups may be the same or different.
  • the polythiophene derivative of the present invention may be a repeating unit having a composition of the formula I, a repeating unit having a composition of the formula II, or a repeating unit having a composition of the formula I and the formula II.
  • the polythiophene derivative may be an optionally substituted polythiophene, and preferably the above-mentioned repeating unit having a composition of the following formula I and/or formula II.
  • the polythiophene derivative of the above structure can be better matched with the pore size of the anode to further improve the ease of discharge.
  • the conductive polymer further includes at least one of a polypyrrole derivative and a polyaniline derivative.
  • the dispersion further comprises a polymeric anion.
  • the polymeric anion is a polymeric carboxylic acid anion or a polymeric sulfonate anion. More preferably, the polymeric anion is a polystyrene sulfonate anion having a molecular weight of from 1000 to 1,000,000.
  • a polymeric anion is added to the dispersion, and the polyanion can be used as a composite ion, which is compounded with polythiophene and then dispersed into water.
  • the polyanion can also act as a dopant to control the molecular weight of the polystyrene sulfonate anion to be 1000- 1000000, the polythiophene can be better dispersed in water.
  • the polystyrenesulfonate anion has a molecular weight of 20,000 to 200,000.
  • the dispersing agent is an organic solvent and/or water.
  • the dispersion further includes at least one of a crosslinking agent, a surfactant, and an additive selected from the group consisting of an ether, a lactone, an amide group, a lactam group, a sulfone, a sulfoxide, a sugar, At least one of a sugar derivative, a sugar alcohol, a furan derivative, a glycol, and a polyol.
  • a crosslinking agent selected from the group consisting of an ether, a lactone, an amide group, a lactam group, a sulfone, a sulfoxide, a sugar, At least one of a sugar derivative, a sugar alcohol, a furan derivative, a glycol, and a polyol.
  • crosslinking agent and the surfactant may be those commonly used in the prior art as crosslinking agents and surfactants.
  • the addition of the crosslinking agent, the surfactant and the additive respectively have an effect of effectively crosslinking and lowering the surface tension.
  • the dispersion has a pH of 1.5-7, and the dispersion has a viscosity of not more than 500 cps at 20 °C.
  • the pH and viscosity of the dispersion can be controlled as described above. More preferably, the pH of the dispersion is 2 to 5, and the viscosity can be tested at 60 rpm.
  • the pH in the dispersion can be adjusted by adding an acid or a base; the step of "applying the dispersion and then partially or completely removing the dispersant or curing the dispersant" can be carried out once or repeatedly. More than two times.
  • An aluminum electrolytic capacitor of the embodiment wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 25 V, comprising a dispersion comprising a conductive polymer, a dispersant, and a polymeric anion, further comprising an additive, wherein the additive is A mixture of an ether, a lactone, an amide group, a furan derivative, and a polyol.
  • the dispersion had a pH of 1.5 and the dispersion had a viscosity of 500 cps at 20 °C.
  • the conductive polymer had an average particle diameter of 5 nm.
  • the conductive polymer includes a polythiophene derivative, and further includes a polypyrrole derivative.
  • the polymeric anion is a polystyrene sulfonate anion, the polystyrene sulfonate anion has a molecular weight of 1000, and the dispersing agent is water.
  • the polythiophene derivative includes a repeating unit having the composition of the following formula I, and the structural formula of the formula I is:
  • A is an optionally substituted alkylene group having 1 carbon atom
  • R is an optionally substituted straight or branched cycloalkyl group having 5 carbon atoms, optionally substituted a linear aryl group having 6 carbon atoms, an optionally substituted linear aralkyl group having 7 carbon atoms, an optionally substituted linear hydroxyalkyl group having 1 carbon atom or a hydroxyl group
  • X is 0.
  • An aluminum electrolytic capacitor of the embodiment wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 15 V, and includes a dispersion comprising a conductive polymer, a dispersant, and a polymerization anion, and further comprising an additive, wherein the additive is ether.
  • the pH of the dispersion was 7, and the viscosity of the dispersion at 20 ° C was 400 cps.
  • the conductive polymer had an average particle diameter of 40 nm.
  • the conductive polymer includes a polythiophene derivative, and further includes a polypyrrole derivative and a polyaniline derivative.
  • the polymeric anion is a polystyrene sulfonate anion, the polystyrene sulfonate anion has a molecular weight of 1,000,000, and the dispersing agent is an organic solvent.
  • the polythiophene derivative includes a repeating unit having the composition of the following formula II, and the structural formula of the formula II is:
  • A is an optionally substituted alkylene group having 5 carbon atoms
  • R is an optionally substituted branched cycloalkyl group having 12 carbon atoms, optionally substituted carbon atoms Is a branched aryl group of 14, an optionally substituted branched aralkyl group having 18 carbon atoms, an optionally substituted branched hydroxyalkyl group having 4 carbon atoms or a hydroxyl group
  • X is 8.
  • An aluminum electrolytic capacitor of the embodiment wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 5 V, and includes a dispersion comprising a conductive polymer, a dispersant, and a polymeric anion, and further comprising an additive, wherein the additive is Amide group.
  • the dispersion had a pH of 4 and the dispersion had a viscosity of 200 cps at 20 °C.
  • the conductive polymer had an average particle diameter of 20 nm.
  • the conductive polymer includes a polythiophene derivative, and further includes a polyaniline derivative.
  • the polymeric anion is a polystyrene sulfonate anion having a molecular weight of 800,000 and the dispersing agent is water.
  • the polythiophene derivative includes a repeating unit having the composition of the following formula I and formula II, wherein the formula of the formula I is:
  • A is an optionally substituted alkylene group having 2 carbon atoms; and R is an optionally substituted linear cycloalkyl group having 8 carbon atoms.
  • R is an optionally substituted linear cycloalkyl group having 8 carbon atoms.
  • Table 1 is a performance test table in which the cores of the four specifications contain the dispersion B.
  • Example 1 100 g of the poly(3,4-dialkoxythiophene) polyanion dispersion of Example 1, 5 g of dimethyl sulfoxide, 5 g of polyethylene glycol 400, 0.5 g of 3-glycidoxy trimethoxysilane (Silquest A-187), 2 g of sorbitol, 0.5 g of Dynol 604 (Air product) were mixed in a glass beaker with a magnetic stirrer to form a dispersion C.
  • Table 2 is a performance test table in which the cores of the four specifications contain the dispersion C.
  • Example 1 100 g of the poly(3,4-dialkoxythiophene) polyanion dispersion of Example 1, 5 g of dimethyl sulfoxide, 5 g of polyethylene glycol 200, 0.5 g of 3-glycidoxytrimethoxysilane (Silquest A-187), 2 g xylitol, 0.5 g Dynol 604 (Air product) were mixed in a glass beaker with a magnetic stirrer to form a dispersion D.
  • the cores of the four specifications were separately contained in Dispersion D, and then dried at 120 ° C and tested for their properties.
  • Table 3 is a performance test table in which the cores of the four specifications contain the dispersion D.
  • the aluminum electrolytic capacitor of the present application has a capacitance of 219-380 ⁇ F, a DF value of 1.4-1.8%, and an equivalent series resistance of 5-9 m ⁇ , and has an easy discharge, low loss, and low equivalent series resistance. And the advantage of low leakage.
  • the aluminum electrolytic capacitor provided by the present application has the advantages of easy discharge, low loss, low equivalent series resistance, and low leakage.

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Abstract

An aluminum electrolytic capacitor and a manufacturing method thereof. An oxidation potential of an anode of the aluminum electrolytic capacitor does not exceed 30V and comprises dispersion comprising an electrically conducting polymer and a dispersant. The electrically conducting polymer has an average particle size of 5-40nm. The aluminum electrolytic capacitor has the advantages of easy manufacturing, low loss, low equivalent series resistance, and low leakage current.

Description

一种铝电解质电容器及其制备方法Aluminum electrolytic capacitor and preparation method thereof 技术领域Technical field
本申请涉及电容器领域，特别是涉及一种铝电解质电容器及其制备方法。The present application relates to the field of capacitors, and in particular to an aluminum electrolytic capacitor and a method of manufacturing the same.
背景技术Background technique
导电聚合物是一类具有共轭π键结构的高分子化合物，经过化学或电化学掺杂对阴离子或对阳离子后形成的具有导电性的特殊高分子材料，包括聚乙炔、聚噻吩、聚吡咯、聚苯胺、聚对苯、聚咔唑和聚芴等。导电聚合物的突出优点是既具有金属和半导体材料的光电特性，又具有聚合物良好的稳定性和力学性能，质量相对较轻，并且容易加工。目前工业领域应用最成功的导电聚合物是聚苯胺和聚噻吩，特别是聚噻吩衍生物之中的聚(3，4-乙撑二氧噻吩)(PEDOT)，更是因其高电导率、良好的环境稳定性、掺杂状态时透明等优点，而在有机电致显示、有机太阳能电池和超级电容器等电子器件中得到广泛商业应用。The conductive polymer is a kind of polymer compound having a conjugated π bond structure, which is chemically or electrochemically doped to form an anion or a cation to form a conductive special polymer material, including polyacetylene, polythiophene, polypyrrole. , polyaniline, polyparaphenylene, polycarbazole and polyfluorene. The outstanding advantages of conductive polymers are that they have both the photoelectric properties of metal and semiconductor materials, good polymer stability and mechanical properties, relatively light weight, and ease of processing. The most successful conductive polymers currently used in the industrial field are polyaniline and polythiophene, especially poly(3,4-ethylenedioxythiophene) (PEDOT) among polythiophene derivatives, but also because of its high conductivity, Good environmental stability, transparency in doped state, etc., and widely used in electronic devices such as organic electro-display, organic solar cells and supercapacitors.
自导电高分子发现以来，无论是电化学方法还是化学方法制备得到的产物一般都是难溶性的导电聚合物粉末，难以加工，因此极大的限制了其应用。直到上世纪80年代拜耳公司在3，4-乙撑二氧噻吩(EDOT)的化学氧化聚合过程中，引入聚对苯乙烯磺酸(PSS)作为电荷平衡掺杂剂，制备出聚(3，4-乙撑二氧噻吩)/聚对苯乙烯磺酸(PEDOT/PSS)，其具有优良的水分散性能、涂布成膜性能、高导电性能、光学透明性、环境稳定性等，目前已应用于超级电容器、抗静电涂料、防腐涂层、电致发光材料、传感器、导电油墨等领域。Since the discovery of conductive polymers, products prepared by electrochemical methods or chemical methods are generally poorly soluble conductive polymer powders, which are difficult to process, thus greatly limiting their applications. Until the 1980s, Bayer introduced poly(p-styrenesulfonic acid (PSS) as a charge-balancing dopant in the chemical oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT) to prepare poly(3, 4-ethylenedioxythiophene)/polystyrenesulfonic acid (PEDOT/PSS), which has excellent water dispersion properties, coating film forming properties, high electrical conductivity, optical transparency, environmental stability, etc. Used in supercapacitors, antistatic coatings, anti-corrosion coatings, electroluminescent materials, sensors, conductive inks and other fields.
专利号为200680033112.0的中国发明专利公开了一种电解质电容器的制备方法，该方法至少包括以下步骤：a)使电极材料的多孔电极体经阳极氧化反应以形成覆盖该电极材料表面的电介质；b)在多孔主体上施加分散体，该多孔主体至少包括电极材料的多孔电极体和电介质，其分散体至少包含导电聚合物的颗粒和分散剂；c)为形成完全或部分覆盖电介质表面的固体电解质，至少部分地去除和/或固化分散剂，多孔电极体在阳极氧化期间的最大阳极化电压大于30V，分散体中导电聚合物颗粒的平均粒径为1-100nm。随着电压的升高，多孔阳极的孔径变大，而电压越低，其孔径将越小，孔径愈小则存在出容愈加困难的问题。将上述专利的电解质电容器用于电压低于30V的情况下，其多孔阳极的孔径将大幅度降低，从而无法保证正常出容。The Chinese invention patent No. 200680033112.0 discloses a method for preparing an electrolytic capacitor, the method comprising at least the following steps: a) subjecting a porous electrode body of an electrode material to anodization to form a dielectric covering a surface of the electrode material; b) Applying a dispersion on the porous body, the porous body comprising at least a porous electrode body of an electrode material and a dielectric, the dispersion comprising at least particles and a dispersant of the conductive polymer; c) forming a solid electrolyte completely or partially covering the surface of the dielectric, The dispersant is at least partially removed and/or cured, the maximum anodization voltage of the porous electrode body during anodization is greater than 30 V, and the average particle diameter of the conductive polymer particles in the dispersion is from 1 to 100 nm. As the voltage increases, the pore size of the porous anode becomes larger, and the lower the voltage, the smaller the pore diameter, and the smaller the pore size, the more difficult the extraction is. When the electrolytic capacitor of the above patent is used for a voltage lower than 30 V, the pore diameter of the porous anode is greatly reduced, so that normal discharge cannot be ensured.
发明内容 Summary of the invention
本发明所要解决的技术问题是：提供一种可以在电压低的条件下保证孔径处于一定大小，以使出容容易的铝电解质电容器，进一步提供上述铝电解质电容器的制备方法。The technical problem to be solved by the present invention is to provide an aluminum electrolytic capacitor capable of ensuring that the aperture is at a certain size under a low voltage condition to facilitate discharge, and further provides a method for preparing the above aluminum electrolytic capacitor.
为了解决上述技术问题，本发明采用的技术方案为：In order to solve the above technical problems, the technical solution adopted by the present invention is:
一种铝电解质电容器，所述铝电解质电容器的阳极的氧化电压不大于30V，包括分散体，所述分散体包括导电聚合物和分散剂，所述导电聚合物的平均粒径为5-40nm。An aluminum electrolytic capacitor having an oxidation voltage of not more than 30 V, comprising a dispersion comprising a conductive polymer and a dispersant, the conductive polymer having an average particle diameter of 5 to 40 nm.
本发明还提供一种铝电解质电容器的制备方法，在上述的铝电解质电容器的电极上施加所述分散体，然后将所述分散剂部分或全部去除，或者将所述分散剂进行固化，所述去除或固化的次数为一次或两次以上。The present invention also provides a method of preparing an aluminum electrolytic capacitor, the dispersion is applied to an electrode of the above-described aluminum electrolytic capacitor, and then the dispersant is partially or completely removed, or the dispersant is cured. The number of removals or curings is one or more times.
本发明的有益效果在于：The beneficial effects of the invention are:
(1)当阳极的氧化电压不大于30V，孔径较小时，控制导电聚合物的平均粒径为5-40nm的设计，达到出容容易的技术效果；(1) When the oxidation voltage of the anode is not more than 30V and the pore diameter is small, the design of controlling the average particle diameter of the conductive polymer is 5-40 nm, and the technical effect of easy discharge is achieved;
(2)由于导电聚合物的孔径小，容易含浸到电容器中，因此获得的铝电解质电容器具有损耗低、等效串联电阻低以及漏电低的优点。(2) Since the conductive polymer has a small pore size and is easily impregnated into the capacitor, the obtained aluminum electrolytic capacitor has the advantages of low loss, low equivalent series resistance, and low leakage.
具体实施方式Detailed ways
为详细说明本发明的技术内容、所实现目的及效果，以下结合实施方式予以说明。The details of the technical contents, the objects and effects achieved by the present invention will be described below in conjunction with the embodiments.
本发明最关键的构思在于：在阳极氧化电压不大于30V的条件下，通过控制导电聚合物的平均粒径为5-40nm，从而达到出容容易的技术效果。The most critical idea of the present invention is that, by controlling the average particle diameter of the conductive polymer to be 5-40 nm under the condition that the anodization voltage is not more than 30 V, the technical effect of easy discharge is achieved.
本发明提供一种铝电解质电容器，所述铝电解质电容器的阳极的氧化电压不大于30V，包括分散体，所述分散体包括导电聚合物和分散剂，所述导电聚合物的平均粒径为5-40nm。The present invention provides an aluminum electrolytic capacitor having an oxidation voltage of not more than 30 V, including a dispersion, the dispersion comprising a conductive polymer and a dispersant, the conductive polymer having an average particle diameter of 5 -40 nm.
本发明还提供一种铝电解质电容器的制备方法，在上述的铝电解质电容器的电极上施加所述分散体，然后将所述分散剂部分或全部去除，或者将所述分散剂进行固化，所述去除或固化的次数为一次或两次以上。The present invention also provides a method of preparing an aluminum electrolytic capacitor, the dispersion is applied to an electrode of the above-described aluminum electrolytic capacitor, and then the dispersant is partially or completely removed, or the dispersant is cured. The number of removals or curings is one or more times.
从上述描述可知，本发明的有益效果在于：As can be seen from the above description, the beneficial effects of the present invention are:
(1)当阳极的氧化电压不大于30V，孔径较小时，控制导电聚合物的平均粒径为5-40nm的设计，达到出容容易的技术效果；(1) When the oxidation voltage of the anode is not more than 30V and the pore diameter is small, the design of controlling the average particle diameter of the conductive polymer is 5-40 nm, and the technical effect of easy discharge is achieved;
(2)由于导电聚合物的孔径小，容易含浸到电容器中，因此获得的铝电解质电容器具有损耗低、等效串联电阻低以及漏电低的优点。(2) Since the conductive polymer has a small pore size and is easily impregnated into the capacitor, the obtained aluminum electrolytic capacitor has the advantages of low loss, low equivalent series resistance, and low leakage.
进一步的，所述导电聚合物包括聚噻吩衍生物，所述聚噻吩衍生物包括具 有下述通式I和/或通式II组成的重复单元，所述通式I的结构式为：Further, the conductive polymer includes a polythiophene derivative, and the polythiophene derivative includes There are repeating units of the formula I and/or formula II, which have the structural formula:
Figure PCTCN2016094921-appb-000001
Figure PCTCN2016094921-appb-000001
所述通式II的结构式为：The structural formula of the general formula II is:
Figure PCTCN2016094921-appb-000002
Figure PCTCN2016094921-appb-000002
所述通式I的结构式和通式II的结构式中，A为任选取代的碳原子数为1-5的亚烷基；R为任选取代的碳原子数为5-12的直连或支链环烷基、任选取代的碳原子数为6-14的直链或支链芳基、任选取代的碳原子数为7-18的直链或支链芳烷基、任选取代的碳原子数为1-4的直链或支链羟烷基或羟基；X为0-8的整数。In the structural formula of the formula I and the formula of the formula II, A is an optionally substituted alkylene group having 1 to 5 carbon atoms; R is an optionally substituted direct bond having 5 to 12 carbon atoms or A branched cycloalkyl group, an optionally substituted straight or branched aryl group having 6 to 14 carbon atoms, an optionally substituted linear or branched aralkyl group having 7 to 18 carbon atoms, optionally substituted A linear or branched hydroxyalkyl group having a carbon number of 1 to 4 or a hydroxyl group; and X is an integer of 0-8.
在A结合有几个A基团的情况下，这些基团可以相同或不同。Where A binds to several A groups, these groups may be the same or different.
本发明的所述聚噻吩衍生物可以为具有通式I组成的重复单元，也可以为具有通式II组成的重复单元，亦可以为具有通式I和通式II组成的重复单元。The polythiophene derivative of the present invention may be a repeating unit having a composition of the formula I, a repeating unit having a composition of the formula II, or a repeating unit having a composition of the formula I and the formula II.
由上述描述可知，聚噻吩衍生物可以是任选被取代的聚噻吩，优选为上述包括具有下述通式I和/或通式II组成的重复单元。上述结构的聚噻吩衍生物可以更好的与阳极孔径大小进行配合，进一步提高出容的容易程度。As apparent from the above description, the polythiophene derivative may be an optionally substituted polythiophene, and preferably the above-mentioned repeating unit having a composition of the following formula I and/or formula II. The polythiophene derivative of the above structure can be better matched with the pore size of the anode to further improve the ease of discharge.
进一步的，所述导电聚合物还包括聚吡咯衍生物和聚苯胺衍生物中的至少一种。Further, the conductive polymer further includes at least one of a polypyrrole derivative and a polyaniline derivative.
进一步的，所述分散体还包括聚合阴离子。优选的，所述聚合阴离子为聚合羧酸阴离子或聚合磺酸阴离子。更为优选的，所述聚合阴离子为聚苯乙烯磺酸阴离子，所述聚苯乙烯磺酸阴离子的分子量为1000-1000000。Further, the dispersion further comprises a polymeric anion. Preferably, the polymeric anion is a polymeric carboxylic acid anion or a polymeric sulfonate anion. More preferably, the polymeric anion is a polystyrene sulfonate anion having a molecular weight of from 1000 to 1,000,000.
由上述描述可知，分散体中添加聚合阴离子，聚阴离子可以做复合离子，与聚噻吩复合然后分散到水中，聚阴离子同时也可以作为掺杂剂，控制聚苯乙烯磺酸阴离子的分子量为1000-1000000，可以使聚噻吩更好的分散在水中。其中，更为优选的，聚苯乙烯磺酸阴离子的分子量为20000-200000。It can be seen from the above description that a polymeric anion is added to the dispersion, and the polyanion can be used as a composite ion, which is compounded with polythiophene and then dispersed into water. The polyanion can also act as a dopant to control the molecular weight of the polystyrene sulfonate anion to be 1000- 1000000, the polythiophene can be better dispersed in water. Among them, more preferably, the polystyrenesulfonate anion has a molecular weight of 20,000 to 200,000.
进一步的，所述分散剂为有机溶剂和/或水。 Further, the dispersing agent is an organic solvent and/or water.
进一步的，所述分散体还包括交联剂、表面活性剂和添加剂中的至少一种，所述添加剂选自醚、内酯、酰胺基团、内酰胺基团、砜、亚砜、糖、糖衍生物、糖醇、呋喃衍生物、二元醇和多元醇中的至少一种。Further, the dispersion further includes at least one of a crosslinking agent, a surfactant, and an additive selected from the group consisting of an ether, a lactone, an amide group, a lactam group, a sulfone, a sulfoxide, a sugar, At least one of a sugar derivative, a sugar alcohol, a furan derivative, a glycol, and a polyol.
由上述描述可知，所述交联剂和表面活性剂可以采用现有技术中的常用交联剂和表面活性剂。加入交联剂、表面活性剂和添加剂分别具有有效交联、降低表面张力的作用。As can be seen from the above description, the crosslinking agent and the surfactant may be those commonly used in the prior art as crosslinking agents and surfactants. The addition of the crosslinking agent, the surfactant and the additive respectively have an effect of effectively crosslinking and lowering the surface tension.
进一步的，所述分散体的pH值为1.5-7，所述分散体在20℃条件下的粘度不大于500cps。Further, the dispersion has a pH of 1.5-7, and the dispersion has a viscosity of not more than 500 cps at 20 °C.
由上述描述可知，可以对分散体的pH值和粘度进行上述控制，更为优选的，分散体的pH值为2-5，同时可以在60rpm的转速下对其粘度进行测试。From the above description, it is understood that the pH and viscosity of the dispersion can be controlled as described above. More preferably, the pH of the dispersion is 2 to 5, and the viscosity can be tested at 60 rpm.
在本发明的铝电解质电容器的制备方法中：In the method of preparing the aluminum electrolytic capacitor of the present invention:
分散体中的pH值可加入酸或碱来调节；所述“施加所述分散体，然后将所述分散剂部分或全部去除，或者将所述分散剂进行固化”的步骤可进行一次或重复两次以上。The pH in the dispersion can be adjusted by adding an acid or a base; the step of "applying the dispersion and then partially or completely removing the dispersant or curing the dispersant" can be carried out once or repeatedly. More than two times.
实施例1Example 1
本实施例的一种铝电解质电容器，所述铝电解质电容器的阳极的氧化电压为25V，包括分散体，所述分散体包括导电聚合物、分散剂和聚合阴离子，还包括添加剂，所述添加剂为醚、内酯、酰胺基团、呋喃衍生物和多元醇的混合物。所述分散体的pH值为1.5，所述分散体在20℃条件下的粘度为500cps。所述导电聚合物的平均粒径为5nm。所述导电聚合物包括聚噻吩衍生物，还包括聚吡咯衍生物。所述聚合阴离子为聚苯乙烯磺酸阴离子，所述聚苯乙烯磺酸阴离子的分子量为1000，所述分散剂为水。所述聚噻吩衍生物包括具有下述通式I组成的重复单元，所述通式I的结构式为：An aluminum electrolytic capacitor of the embodiment, wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 25 V, comprising a dispersion comprising a conductive polymer, a dispersant, and a polymeric anion, further comprising an additive, wherein the additive is A mixture of an ether, a lactone, an amide group, a furan derivative, and a polyol. The dispersion had a pH of 1.5 and the dispersion had a viscosity of 500 cps at 20 °C. The conductive polymer had an average particle diameter of 5 nm. The conductive polymer includes a polythiophene derivative, and further includes a polypyrrole derivative. The polymeric anion is a polystyrene sulfonate anion, the polystyrene sulfonate anion has a molecular weight of 1000, and the dispersing agent is water. The polythiophene derivative includes a repeating unit having the composition of the following formula I, and the structural formula of the formula I is:
Figure PCTCN2016094921-appb-000003
Figure PCTCN2016094921-appb-000003
所述通式I的结构式中，A为任选取代的碳原子数为1的亚烷基；R为任选取代的碳原子数为5的直连或支链环烷基、任选取代的碳原子数为6的直链芳基、任选取代的碳原子数为7的直链芳烷基、任选取代的碳原子数为1的直链羟烷基或羟基；X为0。 In the formula of the formula I, A is an optionally substituted alkylene group having 1 carbon atom; R is an optionally substituted straight or branched cycloalkyl group having 5 carbon atoms, optionally substituted a linear aryl group having 6 carbon atoms, an optionally substituted linear aralkyl group having 7 carbon atoms, an optionally substituted linear hydroxyalkyl group having 1 carbon atom or a hydroxyl group; and X is 0.
实施例2Example 2
本实施例的一种铝电解质电容器，所述铝电解质电容器的阳极的氧化电压为15V，包括分散体，所述分散体包括导电聚合物、分散剂和聚合阴离子，还包括添加剂，所述添加剂为醚。所述分散体的pH值为7，所述分散体在20℃条件下的粘度为400cps。所述导电聚合物的平均粒径为40nm。所述导电聚合物包括聚噻吩衍生物，还包括聚吡咯衍生物和聚苯胺衍生物。所述聚合阴离子为聚苯乙烯磺酸阴离子，所述聚苯乙烯磺酸阴离子的分子量为1000000，所述分散剂为有机溶剂。所述聚噻吩衍生物包括具有下述通式II组成的重复单元，所述通式II的结构式为：An aluminum electrolytic capacitor of the embodiment, wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 15 V, and includes a dispersion comprising a conductive polymer, a dispersant, and a polymerization anion, and further comprising an additive, wherein the additive is ether. The pH of the dispersion was 7, and the viscosity of the dispersion at 20 ° C was 400 cps. The conductive polymer had an average particle diameter of 40 nm. The conductive polymer includes a polythiophene derivative, and further includes a polypyrrole derivative and a polyaniline derivative. The polymeric anion is a polystyrene sulfonate anion, the polystyrene sulfonate anion has a molecular weight of 1,000,000, and the dispersing agent is an organic solvent. The polythiophene derivative includes a repeating unit having the composition of the following formula II, and the structural formula of the formula II is:
Figure PCTCN2016094921-appb-000004
Figure PCTCN2016094921-appb-000004
所述通式II的结构式中，A为任选取代的碳原子数为5的亚烷基；R为任选取代的碳原子数为12的支链环烷基、任选取代的碳原子数为14的支链芳基、任选取代的碳原子数为18的支链芳烷基、任选取代的碳原子数为4的支链羟烷基或羟基；X为8。In the structural formula of the formula II, A is an optionally substituted alkylene group having 5 carbon atoms; R is an optionally substituted branched cycloalkyl group having 12 carbon atoms, optionally substituted carbon atoms Is a branched aryl group of 14, an optionally substituted branched aralkyl group having 18 carbon atoms, an optionally substituted branched hydroxyalkyl group having 4 carbon atoms or a hydroxyl group; and X is 8.
实施例3Example 3
本实施例的一种铝电解质电容器，所述铝电解质电容器的阳极的氧化电压为5V，包括分散体，所述分散体包括导电聚合物、分散剂和聚合阴离子，还包括添加剂，所述添加剂为酰胺基团。所述分散体的pH值为4，所述分散体在20℃条件下的粘度为200cps。所述导电聚合物的平均粒径为20nm。所述导电聚合物包括聚噻吩衍生物，还包括聚苯胺衍生物。所述聚合阴离子为聚苯乙烯磺酸阴离子，所述聚苯乙烯磺酸阴离子的分子量为800000，所述分散剂为水。所述聚噻吩衍生物包括具有下述通式I和通式II组成的重复单元，所述通式I的结构式为： An aluminum electrolytic capacitor of the embodiment, wherein an anode of the aluminum electrolytic capacitor has an oxidation voltage of 5 V, and includes a dispersion comprising a conductive polymer, a dispersant, and a polymeric anion, and further comprising an additive, wherein the additive is Amide group. The dispersion had a pH of 4 and the dispersion had a viscosity of 200 cps at 20 °C. The conductive polymer had an average particle diameter of 20 nm. The conductive polymer includes a polythiophene derivative, and further includes a polyaniline derivative. The polymeric anion is a polystyrene sulfonate anion having a molecular weight of 800,000 and the dispersing agent is water. The polythiophene derivative includes a repeating unit having the composition of the following formula I and formula II, wherein the formula of the formula I is:
Figure PCTCN2016094921-appb-000005
Figure PCTCN2016094921-appb-000005
所述通式II的结构式为：The structural formula of the general formula II is:
Figure PCTCN2016094921-appb-000006
Figure PCTCN2016094921-appb-000006
所述通式I的结构式和通式II的结构式中，A为任选取代的碳原子数为2的亚烷基；R为任选取代的碳原子数为8的直链环烷基、任选取代的碳原子数为10的直链芳基、任选取代的碳原子数为10的直链芳烷基、任选取代的碳原子数为3的支链羟烷基或羟基；X为4。In the structural formula of the formula I and the formula of the formula II, A is an optionally substituted alkylene group having 2 carbon atoms; and R is an optionally substituted linear cycloalkyl group having 8 carbon atoms. a substituted linear aryl group having 10 carbon atoms, an optionally substituted linear aralkyl group having 10 carbon atoms, an optionally substituted branched hydroxyalkyl group having 3 carbon atoms or a hydroxyl group; 4.
实施例4Example 4
将100g聚苯乙烯磺酸加入到2000g去离子水中，搅拌30分钟，然后将50g35％的过硫酸钠水溶液，1％的硫酸铁水溶液14.4g与9.1g 3，4-二烷氧基噻吩混合均匀加入到上述水溶液中，搅拌24h。反应结束后，向反应体系中加入200g阳离子树脂，200g阴离子树脂搅拌12h，过滤掉树脂，即得到聚(3，4-二烷氧基噻吩)聚阴离子。用高压均质机，在1000bar压力下，均质5次。然后测试固含量1.34％。用粒度测试仪测试粒径在10-35nm。分散体的粘度150cps。100 g of polystyrenesulfonic acid was added to 2000 g of deionized water, stirred for 30 minutes, and then 50 g of a 35% aqueous solution of sodium persulfate, 14.4 g of a 1% aqueous solution of iron sulfate and 9.1 g of 3,4-dialkoxythiophene were uniformly mixed. It was added to the above aqueous solution and stirred for 24 hours. After completion of the reaction, 200 g of a cationic resin was added to the reaction system, and 200 g of an anion resin was stirred for 12 hours, and the resin was filtered off to obtain a poly(3,4-dialkoxythiophene) polyanion. With a high pressure homogenizer, it was homogenized 5 times under a pressure of 1000 bar. Then the solid content was tested at 1.34%. The particle size was measured by a particle size tester at 10-35 nm. The viscosity of the dispersion was 150 cps.
将100g上述方法获得的聚(3，4-二烷氧基噻吩)聚阴离子、5g乙二醇、5g聚乙二醇600、0.5g3-缩水甘油氧基三甲氧基甲硅烷(Silquest A-187)、0.5gDynol604(Air product)在玻璃烧杯中用磁力搅拌器混匀，形成分散体B。100 g of poly(3,4-dialkoxythiophene) polyanion obtained by the above method, 5 g of ethylene glycol, 5 g of polyethylene glycol 600, 0.5 g of 3-glycidoxytrimethoxysilane (Silquest A-187) ), 0.5 g of Dynol 604 (Air product) was mixed in a glass beaker with a magnetic stirrer to form a dispersion B.
分别将4种规格的芯包含上述分散体B，然后于120℃下进行烘干并对其性能进行测试。测试结果如表1。表1为4种规格的芯包含分散体B的性能测试表。The cores of the four specifications were separately contained in the above dispersion B, and then dried at 120 ° C and tested for their properties. The test results are shown in Table 1. Table 1 is a performance test table in which the cores of the four specifications contain the dispersion B.
表1 包含分散体B的四种规格芯的测试结果Table 1 Test results for four cores containing Dispersion B
Figure PCTCN2016094921-appb-000007
Figure PCTCN2016094921-appb-000007
Figure PCTCN2016094921-appb-000008
Figure PCTCN2016094921-appb-000008
实施例5Example 5
将100g实施例1的聚(3，4-二烷氧基噻吩)聚阴离子分散体、5g二甲基亚砜、5g聚乙二醇400、0.5g 3-缩水甘油氧基三甲氧基甲硅烷(SilquestA-187)、2g山梨醇、0.5g Dynol604(Air product)在玻璃烧杯中用磁力搅拌器混匀，形成分散体C。100 g of the poly(3,4-dialkoxythiophene) polyanion dispersion of Example 1, 5 g of dimethyl sulfoxide, 5 g of polyethylene glycol 400, 0.5 g of 3-glycidoxy trimethoxysilane (Silquest A-187), 2 g of sorbitol, 0.5 g of Dynol 604 (Air product) were mixed in a glass beaker with a magnetic stirrer to form a dispersion C.
分别将4种规格的芯包含所述分散体C，然后于120℃下进行烘干并对其性能进行测试。测试结果如表2。表2为4种规格的芯包含分散体C的性能测试表。The cores of the four specifications were separately contained in the dispersion C, and then dried at 120 ° C and tested for their properties. The test results are shown in Table 2. Table 2 is a performance test table in which the cores of the four specifications contain the dispersion C.
表2 包含分散体C的四种规格芯的测试结果Table 2 Test results for four cores containing Dispersion C
Figure PCTCN2016094921-appb-000009
Figure PCTCN2016094921-appb-000009
实施例6Example 6
将100g实施例1的聚(3，4-二烷氧基噻吩)聚阴离子分散体、5g二甲基亚砜、5g聚乙二醇200、0.5g 3-缩水甘油氧基三甲氧基甲硅烷(SilquestA-187)、2g木糖醇、0.5g Dynol604(Air product)在玻璃烧杯中用磁力搅拌器混匀，形成分散体D。100 g of the poly(3,4-dialkoxythiophene) polyanion dispersion of Example 1, 5 g of dimethyl sulfoxide, 5 g of polyethylene glycol 200, 0.5 g of 3-glycidoxytrimethoxysilane (Silquest A-187), 2 g xylitol, 0.5 g Dynol 604 (Air product) were mixed in a glass beaker with a magnetic stirrer to form a dispersion D.
分别将4种规格的芯包含分散体D，然后于120℃下进行烘干并对其性能进行测试。The cores of the four specifications were separately contained in Dispersion D, and then dried at 120 ° C and tested for their properties.
测试结果如表3。表3为4种规格的芯包含分散体D的性能测试表。The test results are shown in Table 3. Table 3 is a performance test table in which the cores of the four specifications contain the dispersion D.
表3 包含分散体D的四种规格芯的测试结果Table 3 Test results for four cores containing Dispersion D
Figure PCTCN2016094921-appb-000010
Figure PCTCN2016094921-appb-000010
Figure PCTCN2016094921-appb-000011
Figure PCTCN2016094921-appb-000011
由表1-3可知，本申请的铝电解质电容器的电容为219-380μF，DF值为1.4-1.8％，等效串联电阻为5-9mΩ，具有出容容易、损耗低、等效串联电阻低以及漏电低的优点。It can be seen from Table 1-3 that the aluminum electrolytic capacitor of the present application has a capacitance of 219-380 μF, a DF value of 1.4-1.8%, and an equivalent series resistance of 5-9 mΩ, and has an easy discharge, low loss, and low equivalent series resistance. And the advantage of low leakage.
综上所述，本申请提供的铝电解质电容器具有出容容易、损耗低、等效串联电阻低以及漏电低的优点。In summary, the aluminum electrolytic capacitor provided by the present application has the advantages of easy discharge, low loss, low equivalent series resistance, and low leakage.
以上内容是结合具体的实施方式对本申请所作的进一步详细说明，不能认定本申请的具体实施只局限于这些说明。对于本申请所属技术领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干简单推演或替换，都应当视为属于本申请的保护范围。 The above content is a further detailed description of the present application in conjunction with the specific embodiments, and the specific implementation of the present application is not limited to the description. It will be apparent to those skilled in the art that the present invention can be made in the form of the present invention without departing from the scope of the present invention.

Claims (10)

  1. 一种铝电解质电容器，其特征在于，所述铝电解质电容器的阳极的氧化电压不大于30V，包括分散体，所述分散体包括导电聚合物和分散剂，所述导电聚合物的平均粒径为5-40nm。An aluminum electrolytic capacitor characterized in that an anode of the aluminum electrolytic capacitor has an oxidation voltage of not more than 30 V, and includes a dispersion comprising a conductive polymer and a dispersant, and an average particle diameter of the conductive polymer is 5-40 nm.
  2. 根据权利要求1所述的铝电解质电容器，其特征在于，所述导电聚合物包括聚噻吩衍生物，所述聚噻吩衍生物包括具有下述通式I和/或通式II组成的重复单元，所述通式I的结构式为：The aluminum electrolytic capacitor according to claim 1, wherein said conductive polymer comprises a polythiophene derivative, and said polythiophene derivative comprises a repeating unit having the following formula I and/or formula II; The structural formula of the formula I is:
    Figure PCTCN2016094921-appb-100001
    Figure PCTCN2016094921-appb-100001
    所述通式II的结构式为：The structural formula of the general formula II is:
    Figure PCTCN2016094921-appb-100002
    Figure PCTCN2016094921-appb-100002
    所述通式I的结构式和通式II的结构式中，A为任选取代的碳原子数为1-5的亚烷基；R为任选取代的碳原子数为5-12的直连或支链环烷基、任选取代的碳原子数为6-14的直链或支链芳基、任选取代的碳原子数为7-18的直链或支链芳烷基、任选取代的碳原子数为1-4的直链或支链羟烷基或羟基；X为0-8的整数。In the structural formula of the formula I and the formula of the formula II, A is an optionally substituted alkylene group having 1 to 5 carbon atoms; R is an optionally substituted direct bond having 5 to 12 carbon atoms or A branched cycloalkyl group, an optionally substituted straight or branched aryl group having 6 to 14 carbon atoms, an optionally substituted linear or branched aralkyl group having 7 to 18 carbon atoms, optionally substituted A linear or branched hydroxyalkyl group having a carbon number of 1 to 4 or a hydroxyl group; and X is an integer of 0-8.
  3. 根据权利要求1所述的铝电解质电容器，其特征在于，所述导电聚合物还包括聚吡咯衍生物和聚苯胺衍生物中的至少一种。The aluminum electrolytic capacitor according to claim 1, wherein the conductive polymer further comprises at least one of a polypyrrole derivative and a polyaniline derivative.
  4. 根据权利要求1所述的铝电解质电容器，其特征在于，所述分散体还包括聚合阴离子。The aluminum electrolytic capacitor according to claim 1, wherein the dispersion further comprises a polymeric anion.
  5. 根据权利要求4所述的铝电解质电容器，其特征在于，所述聚合阴离子为聚合羧酸阴离子或聚合磺酸阴离子。The aluminum electrolytic capacitor according to claim 4, wherein the polymeric anion is a polymeric carboxylic acid anion or a polymeric sulfonic acid anion.
  6. 根据权利要求4所述的铝电解质电容器，其特征在于，所述聚合阴离子为聚苯乙烯磺酸阴离子，所述聚苯乙烯磺酸阴离子的分子量为1000-1000000。The aluminum electrolytic capacitor according to claim 4, wherein the polymer anion is a polystyrene sulfonate anion, and the polystyrene sulfonate anion has a molecular weight of from 1,000 to 1,000,000.
  7. 根据权利要求1所述的铝电解质电容器，其特征在于，所述分散剂为有机 溶剂和/或水。The aluminum electrolytic capacitor according to claim 1, wherein said dispersing agent is organic Solvent and / or water.
  8. 根据权利要求1所述的铝电解质电容器，其特征在于，所述分散体还包括交联剂、表面活性剂和添加剂中的至少一种，所述添加剂选自醚、内酯、酰胺基团、内酰胺基团、砜、亚砜、糖、糖衍生物、糖醇、呋喃衍生物、二元醇和多元醇中的至少一种。The aluminum electrolytic capacitor according to claim 1, wherein the dispersion further comprises at least one of a crosslinking agent, a surfactant, and an additive selected from the group consisting of ethers, lactones, and amide groups. At least one of a lactam group, a sulfone, a sulfoxide, a sugar, a sugar derivative, a sugar alcohol, a furan derivative, a glycol, and a polyol.
  9. 根据权利要求1所述的铝电解质电容器，其特征在于，所述分散体的pH值为1.5-7，所述分散体在20℃条件下的粘度不大于500cps。The aluminum electrolytic capacitor according to claim 1, wherein the dispersion has a pH of 1.5 to 7, and the dispersion has a viscosity of not more than 500 cps at 20 °C.
  10. 一种铝电解质电容器的制备方法，其特征在于，在权利要求1-9任意一项所述的铝电解质电容器的电极上施加所述分散体，然后将所述分散剂部分或全部去除，或者将所述分散剂进行固化，所述去除或固化的次数为一次或两次以上。 A method of producing an aluminum electrolytic capacitor, characterized in that the dispersion is applied to an electrode of an aluminum electrolytic capacitor according to any one of claims 1 to 9, and then the dispersant is partially or completely removed, or The dispersant is cured, and the number of times of removal or curing is one or more times.
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