CN108666136A - 一种固体电解电容器的制造方法 - Google Patents
一种固体电解电容器的制造方法 Download PDFInfo
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- 239000003990 capacitor Substances 0.000 title claims abstract description 17
- 239000007787 solid Substances 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims abstract description 14
- 239000010410 layer Substances 0.000 claims abstract description 12
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052715 tantalum Inorganic materials 0.000 claims abstract description 8
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000011247 coating layer Substances 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 4
- 239000006185 dispersion Substances 0.000 claims abstract description 4
- 238000003487 electrochemical reaction Methods 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 4
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 claims description 3
- 239000001741 Ammonium adipate Substances 0.000 claims description 3
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 235000019293 ammonium adipate Nutrition 0.000 claims description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000003068 static effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
Classifications
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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
- H01G9/0029—Processes of manufacture
- H01G9/0032—Processes of manufacture formation of the dielectric 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
- H01G9/0029—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
- H01G9/022—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
- H01G9/07—Dielectric layers
-
- 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
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- Engineering & Computer Science (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacturing & Machinery (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
本发明公开了一种固体电解电容器的制造方法,将烧结后的钽块置于磷酸溶液中,然后通直流电,通过电化学反应直至在钽块表面形成无定形的电介质层;依次形成有由阀金属构成的阳极体、在阳极体的表面的电介质氧化覆膜层、固体电解质层和阴极层,在阳极体中含浸含有山梨糖醇的导电性高分子的分散溶液,形成含有所述山梨糖醇60~90wt%的固体电解质,本方法工艺简单,本发明所制成的固体电解电容其整体体积较小且厚度较薄,可应用于手持式部品或闪光装置中,山梨糖醇的羟基作为阳极氧化覆膜的阳极氧化所需的氧源起作用,耐电压特性提高,另外,通过将固体电解质中的所述山梨糖醇的含量特定化为60~90wt%,可将静电容量变化率保持在良好的范围。
Description
技术领域
本发明涉及电气设备制造技术领域,尤其涉及一种固体电解电容器的制造方法。
背景技术
利用了如铝等之类的具有阀作用的金属的电解电容器通过将作为阳极电极的阀作用金属形成为蚀刻箔等的形状并将电介质扩面化,可得到小型且大的容量,因此,通常被广泛利用。特别是使用了固体电解质作为电解质的固体电解电容器除小型、大容量、低等效串联电阻以外,由于具备容易芯片化、适于表面安装等特质,因此,成为在电子设备的小型化、高功能化方面不可或缺的电容器。作为用于固体电解电容器的固体电解质,电导率高且与阳极电极的氧化覆膜层的密合性优异的导电性高分子可用作固体电解质。作为该导电性高分子,例如已知有聚苯胺、聚吡咯、聚噻吩、聚乙烯二氧噻吩或它们的衍生物等。
发明内容
鉴于此,本发明提供了一种固体电解电容器的制造方法,制造方法包括如下步骤:
第一步:将烧结后的钽块置于磷酸溶液中,然后通直流电,通过电化学反应直至在钽块表面形成无定形的电介质层;
第二步:依次形成有由阀金属构成的阳极体、在阳极体的表面的电介质氧化覆膜层、固体电解质层和阴极层,在阳极体中含浸含有山梨糖醇的导电性高分子的分散溶液,形成含有所述山梨糖醇60~90wt%的固体电解质。
第三步:将铝箔阴极部分浸入含0.1-1.0M的己二酸铵和0.01-0.1M的磷酸二氢铵的混合水溶液中,控制温度在60-90℃并加6-35V的电压,保持电压恒定15-45分钟,取出后清洗烘干;
第四步:用环氧树脂将上述电容器芯子进行模塑封装即可。
采用上述技术方案,具有如下有益效果:
本方法工艺简单,本发明所制成的固体电解电容其整体体积较小且厚度较薄,可应用于手持式部品或闪光装置中,山梨糖醇的羟基作为阳极氧化覆膜的阳极氧化所需的氧源起作用,耐电压特性提高,另外,通过将固体电解质中的所述山梨糖醇的含量特定化为60~90wt%,可将静电容量变化率保持在良好的范围。
具体实施方式
实施例1:一种固体电解电容器的制造方法,制造方法包括如下步骤:
第一步:将烧结后的钽块置于磷酸溶液中,然后通直流电,通过电化学反应直至在钽块表面形成无定形的电介质层;
第二步:依次形成有由阀金属构成的阳极体、在阳极体的表面的电介质氧化覆膜层、固体电解质层和阴极层,在阳极体中含浸含有山梨糖醇的导电性高分子的分散溶液,形成含有所述山梨糖醇60~90wt%的固体电解质。
第三步:将铝箔阴极部分浸入含0.1-1.0M的己二酸铵和0.01-0.1M的磷酸二氢铵的混合水溶液中,控制温度在60-90℃并加6-35V的电压,保持电压恒定15-45分钟,取出后清洗烘干;
第四步:用环氧树脂将上述电容器芯子进行模塑封装即可。
采用上述技术方案,具有如下有益效果:
本方法工艺简单,本发明所制成的固体电解电容其整体体积较小且厚度较薄,可应用于手持式部品或闪光装置中,山梨糖醇的羟基作为阳极氧化覆膜的阳极氧化所需的氧源起作用,耐电压特性提高,另外,通过将固体电解质中的所述山梨糖醇的含量特定化为60~90wt%,可将静电容量变化率保持在良好的范围。
以上描述了本发明的基本原理和主要特征,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内,发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (2)
1.一种固体电解电容器的制造方法,其特征在于,制造方法包括如下步骤:
第一步:将烧结后的钽块置于磷酸溶液中,然后通直流电,通过电化学反应直至在钽块表面形成无定形的电介质层;
第二步:依次形成有由阀金属构成的阳极体、在阳极体的表面的电介质氧化覆膜层、固体电解质层和阴极层,在阳极体中含浸含有山梨糖醇的导电性高分子的分散溶液,形成含有所述山梨糖醇60~90wt%的固体电解质。
2.第三步:将铝箔阴极部分浸入含0.1-1.0M的己二酸铵和0.01-0.1M的磷酸二氢铵的混合水溶液中,控制温度在60-90℃并加6-35V的电压,保持电压恒定15-45分钟,取出后清洗烘干;
第四步:用环氧树脂将上述电容器芯子进行模塑封装即可。
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Application publication date: 20181016 |