WO2014021333A1 - 固体電解コンデンサ及びその製造方法 - Google Patents
固体電解コンデンサ及びその製造方法 Download PDFInfo
- Publication number
- WO2014021333A1 WO2014021333A1 PCT/JP2013/070631 JP2013070631W WO2014021333A1 WO 2014021333 A1 WO2014021333 A1 WO 2014021333A1 JP 2013070631 W JP2013070631 W JP 2013070631W WO 2014021333 A1 WO2014021333 A1 WO 2014021333A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solid electrolytic
- electrolytic capacitor
- conductive polymer
- acid
- capacitor element
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 89
- 239000007787 solid Substances 0.000 title claims abstract description 41
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- 238000000034 method Methods 0.000 title abstract description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 81
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 43
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000011888 foil Substances 0.000 claims abstract description 24
- 150000001875 compounds Chemical class 0.000 claims abstract description 22
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 239000002904 solvent Substances 0.000 claims abstract description 22
- 150000002500 ions Chemical class 0.000 claims abstract description 18
- 150000007522 mineralic acids Chemical class 0.000 claims abstract description 16
- 239000012046 mixed solvent Substances 0.000 claims abstract description 16
- 150000007524 organic acids Chemical class 0.000 claims abstract description 16
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 15
- -1 amine salt Chemical class 0.000 claims abstract description 12
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims abstract description 9
- 125000000909 amidinium group Chemical group 0.000 claims abstract description 8
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- 239000002131 composite material Chemical class 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 15
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 claims description 7
- CMJLMPKFQPJDKP-UHFFFAOYSA-N 3-methylthiolane 1,1-dioxide Chemical compound CC1CCS(=O)(=O)C1 CMJLMPKFQPJDKP-UHFFFAOYSA-N 0.000 claims description 3
- WKFQMDFSDQFAIC-UHFFFAOYSA-N 2,4-dimethylthiolane 1,1-dioxide Chemical compound CC1CC(C)S(=O)(=O)C1 WKFQMDFSDQFAIC-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 13
- 230000006866 deterioration Effects 0.000 abstract description 8
- 238000004804 winding Methods 0.000 abstract description 2
- 235000005985 organic acids Nutrition 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 239000008151 electrolyte solution Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 8
- 239000002253 acid Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 238000005470 impregnation Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- GKWLILHTTGWKLQ-UHFFFAOYSA-N 2,3-dihydrothieno[3,4-b][1,4]dioxine Chemical compound O1CCOC2=CSC=C21 GKWLILHTTGWKLQ-UHFFFAOYSA-N 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 4
- 239000004327 boric acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 3
- 229910000387 ammonium dihydrogen phosphate Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 235000019837 monoammonium phosphate Nutrition 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 2
- ROSDSFDQCJNGOL-UHFFFAOYSA-N Dimethylamine Chemical compound CNC ROSDSFDQCJNGOL-UHFFFAOYSA-N 0.000 description 2
- QUSNBJAOOMFDIB-UHFFFAOYSA-N Ethylamine Chemical compound CCN QUSNBJAOOMFDIB-UHFFFAOYSA-N 0.000 description 2
- BAVYZALUXZFZLV-UHFFFAOYSA-N Methylamine Chemical compound NC BAVYZALUXZFZLV-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000001361 adipic acid Substances 0.000 description 2
- 235000011037 adipic acid Nutrition 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000010405 anode material Substances 0.000 description 2
- 235000010233 benzoic acid Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- JQVDAXLFBXTEQA-UHFFFAOYSA-N dibutylamine Chemical compound CCCCNCCCC JQVDAXLFBXTEQA-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical compound CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 150000003335 secondary amines Chemical class 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- 230000005068 transpiration Effects 0.000 description 2
- WYXIGTJNYDDFFH-UHFFFAOYSA-Q triazanium;borate Chemical compound [NH4+].[NH4+].[NH4+].[O-]B([O-])[O-] WYXIGTJNYDDFFH-UHFFFAOYSA-Q 0.000 description 2
- JIFXKZJGKSXAGZ-UHFFFAOYSA-N 1-ethyl-2,3-dimethylimidazolidine Chemical compound CCN1CCN(C)C1C JIFXKZJGKSXAGZ-UHFFFAOYSA-N 0.000 description 1
- OWCLRJQYKBAMOL-UHFFFAOYSA-N 2-butyloctanedioic acid Chemical compound CCCCC(C(O)=O)CCCCCC(O)=O OWCLRJQYKBAMOL-UHFFFAOYSA-N 0.000 description 1
- BDDXSIGTUHZAGM-UHFFFAOYSA-N 2-ethyl-1,1-dimethyl-4,5-dihydroimidazol-1-ium Chemical compound C(C)C=1[N+](CCN=1)(C)C BDDXSIGTUHZAGM-UHFFFAOYSA-N 0.000 description 1
- XWVFEDFALKHCLK-UHFFFAOYSA-N 2-methylnonanedioic acid Chemical compound OC(=O)C(C)CCCCCCC(O)=O XWVFEDFALKHCLK-UHFFFAOYSA-N 0.000 description 1
- SLAMLWHELXOEJZ-UHFFFAOYSA-N 2-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC=C1[N+]([O-])=O SLAMLWHELXOEJZ-UHFFFAOYSA-N 0.000 description 1
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 description 1
- AFPHTEQTJZKQAQ-UHFFFAOYSA-N 3-nitrobenzoic acid Chemical compound OC(=O)C1=CC=CC([N+]([O-])=O)=C1 AFPHTEQTJZKQAQ-UHFFFAOYSA-N 0.000 description 1
- RTZZCYNQPHTPPL-UHFFFAOYSA-N 3-nitrophenol Chemical compound OC1=CC=CC([N+]([O-])=O)=C1 RTZZCYNQPHTPPL-UHFFFAOYSA-N 0.000 description 1
- GNCJRTJOPHONBZ-UHFFFAOYSA-N 4,4,5,5-tetramethyl-1h-imidazole Chemical compound CC1(C)NC=NC1(C)C GNCJRTJOPHONBZ-UHFFFAOYSA-N 0.000 description 1
- OTLNPYWUJOZPPA-UHFFFAOYSA-N 4-nitrobenzoic acid Chemical compound OC(=O)C1=CC=C([N+]([O-])=O)C=C1 OTLNPYWUJOZPPA-UHFFFAOYSA-N 0.000 description 1
- BTJIUGUIPKRLHP-UHFFFAOYSA-N 4-nitrophenol Chemical compound OC1=CC=C([N+]([O-])=O)C=C1 BTJIUGUIPKRLHP-UHFFFAOYSA-N 0.000 description 1
- FLDCSPABIQBYKP-UHFFFAOYSA-N 5-chloro-1,2-dimethylbenzimidazole Chemical compound ClC1=CC=C2N(C)C(C)=NC2=C1 FLDCSPABIQBYKP-UHFFFAOYSA-N 0.000 description 1
- 239000001741 Ammonium adipate Substances 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical class CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 description 1
- 229930195725 Mannitol Natural products 0.000 description 1
- JGFZNNIVVJXRND-UHFFFAOYSA-N N,N-Diisopropylethylamine (DIPEA) Chemical compound CCN(C(C)C)C(C)C JGFZNNIVVJXRND-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019293 ammonium adipate Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000010338 boric acid Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 1
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 1
- 235000019838 diammonium phosphate Nutrition 0.000 description 1
- HPNMFZURTQLUMO-UHFFFAOYSA-N diethylamine Chemical compound CCNCC HPNMFZURTQLUMO-UHFFFAOYSA-N 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- LIWAQLJGPBVORC-UHFFFAOYSA-N ethylmethylamine Chemical compound CCNC LIWAQLJGPBVORC-UHFFFAOYSA-N 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 235000010355 mannitol Nutrition 0.000 description 1
- 239000000594 mannitol Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000002828 nitro derivatives Chemical class 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- ZWLPBLYKEWSWPD-UHFFFAOYSA-N o-toluic acid Chemical compound CC1=CC=CC=C1C(O)=O ZWLPBLYKEWSWPD-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005502 peroxidation Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000003586 protic polar solvent Substances 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical compound C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
- PCCVSPMFGIFTHU-UHFFFAOYSA-N tetracyanoquinodimethane Chemical compound N#CC(C#N)=C1C=CC(=C(C#N)C#N)C=C1 PCCVSPMFGIFTHU-UHFFFAOYSA-N 0.000 description 1
- CBXCPBUEXACCNR-UHFFFAOYSA-N tetraethylammonium Chemical compound CC[N+](CC)(CC)CC CBXCPBUEXACCNR-UHFFFAOYSA-N 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 1
- SEACXNRNJAXIBM-UHFFFAOYSA-N triethyl(methyl)azanium Chemical compound CC[N+](C)(CC)CC SEACXNRNJAXIBM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- H01G9/022—Electrolytes; Absorbents
-
- 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
- H01G9/032—Inorganic semiconducting electrolytes, e.g. MnO2
-
- 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
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
-
- 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
- H01G9/151—Solid electrolytic capacitors with wound foil electrodes
Definitions
- the present invention relates to a solid electrolytic capacitor and a manufacturing method thereof, and more particularly, to a solid electrolytic capacitor having a good withstand voltage characteristic and a manufacturing method thereof.
- An electrolytic capacitor using a metal having a valve action such as tantalum or aluminum is obtained by expanding the dielectric by making the valve action metal as the anode-side counter electrode into the shape of a sintered body or an etching foil. Since it is small and a large capacity can be obtained, it is widely used.
- a solid electrolytic capacitor using a solid electrolyte as an electrolyte has features such as small size, large capacity, low equivalent series resistance, easy to chip, and suitable for surface mounting. It is indispensable for miniaturization, high functionality and low cost of electronic equipment.
- an anode foil and a cathode foil made of a valve metal such as aluminum are generally wound with a separator interposed therebetween to form a capacitor element. It is impregnated with a driving electrolyte, and has a sealed structure in which a capacitor element is housed in a metal case such as aluminum or a case made of synthetic resin.
- a metal case such as aluminum or a case made of synthetic resin.
- the anode material aluminum, tantalum, niobium, titanium and the like are used, and as the cathode material, the same kind of metal as the anode material is used.
- Patent Document 1 As solid electrolytes used for solid electrolytic capacitors, manganese dioxide and 7,7,8,8-tetracyanoquinodimethane (TCNQ) complexes are known. There is a technique (Patent Document 1) that focuses on a conductive polymer such as polyethylenedioxythiophene (hereinafter referred to as PEDOT) having excellent adhesion to an oxide film layer of an electrode.
- PEDOT polyethylenedioxythiophene
- a solid electrolytic capacitor of a type in which a solid electrolyte layer made of a conductive polymer such as PEDOT is formed on such a wound capacitor element is manufactured as follows. First, the surface of the anode foil made of valve action metal such as aluminum is roughened by electrochemical etching treatment in an aqueous chloride solution to form many etching pits, and then in an aqueous solution such as ammonium borate. A voltage is applied to form an oxide film layer serving as a dielectric (chemical conversion). Similar to the anode foil, the cathode foil is made of a valve metal such as aluminum, but the surface is only subjected to etching treatment.
- the anode foil having the oxide film layer formed on the surface and the cathode foil having only the etching pits are wound through a separator to form a capacitor element.
- a polymerizable monomer such as 3,4-ethylenedioxythiophene (hereinafter referred to as EDOT) and an oxidant solution are respectively discharged into the capacitor element that has been subjected to restoration conversion, or immersed in a mixture of both.
- EDOT 3,4-ethylenedioxythiophene
- an oxidant solution are respectively discharged into the capacitor element that has been subjected to restoration conversion, or immersed in a mixture of both.
- the polymerization reaction is accelerated in the capacitor element, and a solid electrolyte layer made of a conductive polymer such as PEDOT is generated.
- the capacitor element is housed in a bottomed cylindrical outer case to produce a solid electrolytic capacitor.
- the solid electrolytic capacitors as described above have been used for in-vehicle use and general power supply circuits, and high withstand voltages of about 25V and 63V have been required.
- high withstand voltages of about 25V and 63V have been required.
- a solid electrolytic capacitor that satisfies requirements such as thermal stability at high temperatures, charge / discharge performance at low temperatures, and further reduction in ESR.
- the present invention has been proposed in order to solve the above-described problems, and an object of the present invention is to provide a high withstand voltage solid electrolytic capacitor capable of preventing deterioration of withstand voltage characteristics due to lead-free reflow and the like, and a method for manufacturing the same. It is to provide.
- an object of the present invention is to provide a solid electrolytic capacitor having a long life at a high temperature and a method for producing the same, while ensuring the charge / discharge performance at a low temperature and reducing the ESR.
- the present inventors impregnate a dispersion containing conductive polymer particles or powder and a solvent to form a solid electrolyte layer made of a conductive polymer so that these reaction residues themselves do not mix.
- the present invention has been completed.
- the solid electrolytic capacitor of the present invention is obtained by impregnating a capacitor element obtained by winding an anode electrode foil and a cathode electrode foil through a separator with a dispersion containing conductive polymer particles or powder and a solvent.
- a solid electrolyte layer made of a polymer is formed, and a mixed solvent containing ethylene glycol and ⁇ -butyrolactone, an organic acid, an inorganic acid, and an organic acid and an inorganic acid are formed in a gap in the capacitor element in which the solid electrolyte layer is formed. It is characterized in that it is filled with an ion conductive material containing at least one ammonium salt, quaternary ammonium salt, quaternized amidinium salt, and amine salt of a complex compound with an acid.
- the present invention it is possible to prevent the breakdown voltage characteristics from being deteriorated due to lead-free reflow or the like.
- An example of a method for producing a solid electrolytic capacitor according to the present invention is as follows. That is, an anode foil and a cathode foil having an oxide film layer formed on the surface are wound through a separator to form a capacitor element, and this capacitor element is subjected to repair formation (first step). Subsequently, the capacitor element is impregnated with a dispersion containing conductive polymer particles or powder and a solvent to form a solid electrolyte layer made of the conductive polymer (second step). Thereafter, the capacitor element is immersed in a predetermined ion conductive material, and the gap in the capacitor element is filled with the ion conductive material (third step). Then, this capacitor element is inserted into the outer case, a sealing rubber is attached to the opening end, and sealing is performed by caulking, and then aging is performed to form a solid electrolytic capacitor (fourth step).
- the chemical solution for restoration chemical conversion As the chemical solution for restoration chemical conversion, phosphoric acid type chemicals such as ammonium dihydrogen phosphate and diammonium hydrogen phosphate, boric acid type chemicals such as ammonium borate, and adipic acid type chemicals such as ammonium adipate, etc. Although a liquid can be used, it is preferable to use ammonium dihydrogen phosphate.
- the immersion time is preferably 5 to 120 minutes.
- the conductive polymer compound dispersion is preferably a mixture of PEDOT powder and a solid content of a dopant made of polystyrene sulfonic acid.
- the solvent of the conductive polymer compound dispersion may be any solvent as long as the conductive polymer compound particles or powder can be dissolved, and water is mainly used.
- ethylene glycol may be used as a solvent for the dispersion as required. It has been found that the use of ethylene glycol as a solvent for the dispersion can particularly reduce ESR among the electrical properties of the product.
- Various additives may be added to the conductive polymer compound dispersion or neutralization may be performed by adding a cation to improve the impregnation property and conductivity of the conductive polymer compound dispersion.
- the time for impregnating the conductive polymer compound dispersion with the capacitor element is determined by the size of the capacitor element, but it is preferably 5 seconds or more for a capacitor element of about ⁇ 5 ⁇ 3L and 10 seconds or more for a capacitor element of about ⁇ 9 ⁇ 5L. It is necessary to impregnate at least 5 seconds. Even if impregnated for a long time, there is no adverse effect on characteristics. Moreover, after impregnating in this way, it is preferable to hold in a reduced pressure state. The reason is considered to be that the residual amount of the volatile solvent is reduced.
- the impregnation and drying of the conductive polymer compound dispersion may be performed a plurality of times as necessary.
- an ion conductive material filled in the capacitor element is an ion solution (having a dissociation constant) in an ordinary state (electrolytic capacitor) Electrolytic solution) can be used.
- a solvent that can be used for the electrolyte solution it is preferable to use a solvent having a boiling point of 120 ° C. or higher, which is a life test temperature.
- the solvent include ⁇ -butyrolactone, ethylene glycol, sulfolane, dimethylformamide and the like.
- initial ESR characteristics are improved and high temperature characteristics are also improved.
- a protic solvent having a hydroxyl group such as ethylene glycol
- ethylene glycol has a higher affinity with a separator, electrode foil, or conductive polymer than ⁇ -butyrolactone or sulfolane, so that the electrolyte solution when using an electrolytic capacitor evaporates.
- ⁇ Cap is considered to be small.
- the amount of ethylene glycol added in the mixed solvent is preferably 10 to 80 wt%.
- the impregnation property of the electrolyte solution into the capacitor element can be improved.
- ethylene glycol which has a relatively high viscosity
- ⁇ -butyrolactone which has a low viscosity
- the amount of ⁇ -butyrolactone added in the mixed solvent is preferably 10 to 60 wt%. is there.
- At least one solvent selected from sulfolane, 3-methylsulfolane, and 2,4-dimethylsulfolane may be additionally used in the mixed solvent composed of ethylene glycol and ⁇ -butyrolactone as ion conductive substances. Since these sulfolane-based solvents have a high boiling point, the transpiration of the electrolyte solution is suppressed and the high temperature characteristics are improved.
- the addition amount of these sulfolane-based solvents in the mixed solvent is preferably 10 to 50 wt%.
- the electrolyte solution includes the above-mentioned solvent and a solute such as at least one ammonium salt, quaternary ammonium salt, quaternized amidinium salt, and amine salt of an organic acid, an inorganic acid, and a composite compound of an organic acid and an inorganic acid.
- a solution consisting of Examples of the organic acid include phthalic acid, isophthalic acid, terephthalic acid, maleic acid, adipic acid, benzoic acid, toluic acid, enanthic acid, malonic acid, 1,6-decanedicarboxylic acid, 1,7-octanedicarboxylic acid, and azelain.
- Examples thereof include carboxylic acids such as acids and phenols.
- Examples of the inorganic acid include boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, phosphoric acid ester, carbonic acid, and silicic acid.
- Examples of the complex compound of an organic acid and an inorganic acid include borodisalicylic acid, borodisuccinic acid, borodiglycolic acid, and the like.
- examples of at least one salt of the organic acid, inorganic acid, and complex compound of organic acid and inorganic acid include ammonium salt, quaternary ammonium salt, quaternized amidinium salt, and amine salt.
- examples of the quaternary ammonium ion of the quaternary ammonium salt include tetramethylammonium, triethylmethylammonium, and tetraethylammonium.
- examples of quaternized amidinium include ethyldimethylimidazolinium and tetramethylimidazolinium.
- examples of amines in amine salts include primary amines, secondary amines, and tertiary amines.
- Examples of primary amines include methylamine, ethylamine, and propylamine.
- Examples of secondary amines include dimethylamine, diethylamine, ethylmethylamine, and dibutylamine.
- Examples of tertiary amines include trimethylamine, triethylamine, tributylamine, and ethyldiisopropylamine. Etc.
- electrolyte solution additives polyoxyethylene glycol, complex compounds of boric acid and polysaccharides (mannitol, sorbit, etc.), complex compounds of boric acid and polyhydric alcohols, nitro compounds (o-nitrobenzoic acid) M-nitrobenzoic acid, p-nitrobenzoic acid, o-nitrophenol, m-nitrophenol, p-nitrophenol, etc.), phosphoric acid esters and the like.
- the filling amount is arbitrary as long as it can be filled in the gap in the capacitor element, but 3 to 100% of the gap in the capacitor element is preferable.
- an ion conductive substance at least one ammonium salt, quaternary ammonium salt, quaternary ammonium salt, a mixed solvent containing ethylene glycol and ⁇ -butyrolactone, an organic acid, an inorganic acid, and a compound compound of an organic acid and an inorganic acid are used.
- a solute selected from a graded amidinium salt and an amine salt low ESR and long life at high temperatures can be achieved while securing charge / discharge performance at low temperatures.
- an electrode drawing means is connected to the anode foil and cathode foil each having an oxide film layer formed on the surface, and both electrode foils are wound through a separator to form a capacitor element having an element shape of 6.3 ⁇ ⁇ 6.1L. Formed. And this capacitor
- EG ethylene glycol
- GBL ⁇ -butyrolactone
- PEG polyoxyethylene glycol
- PhA phthalic acid
- BSalA borodisalicylic acid
- AzA azelaic acid
- BeA benzoic acid
- TEA triethylamine
- TMA trimethylamine
- Table 2 shows the initial ESR characteristics of the solid electrolytic capacitors produced in Table 1, the ESR characteristics when subjected to a no-load leaving test at 125 ° C. for 1500 hours, the amount of electrolyte solution removal, and the ⁇ Cap results. In the present specification, all ESR characteristics show values at 100 kHz (20 ° C.). Further, the amount of the electrolyte solution removed is measured by the difference between the initial product weight and the product weight after the standing test.
- Example 1 and Example 2 using a mixed solvent of ethylene glycol and ⁇ -butyrolactone are the initial ESR. It was found that the characteristic deterioration was small even after the high temperature test. Further, as in Examples 3 to 7, it was found that the same effect can be obtained by changing the anion component or cation component of the solute or adding polyoxyethylene glycol as an additive.
- Example 1 was 50 m ⁇ and Example 2 was 37 m ⁇ . From this, it was found that the low temperature characteristics were good by using borodisalicylate as a solute. Deterioration at low temperature increases the ESR because current concentration occurs in the conductive polymer due to deterioration of the conductivity due to solidification of the electrolyte solution and increase in viscosity at low temperature, and peroxidation of the conductive polymer occurs. Since the oxidation potential of borodisalicylic acid used in Example 2 is more noble than the oxidation potential of the conductive polymer, it acts as an antioxidant, thereby suppressing the oxidation of the conductive polymer.
- Table 3 shows the composition of the electrolyte solution when the addition amounts of ethylene glycol and ⁇ -butyrolactone are changed, initial ESR characteristics, 125 ° C., ESR characteristics after 1500 hours no-load test, ⁇ Cap and low temperature charge. Discharge characteristics (100,000 cycles, ⁇ 40 ° C.) are shown.
- Example 15 in which the addition amount of ethylene glycol was 90 wt%, the low temperature charge / discharge characteristics were increased.
- Example 10 in which the addition amount of ⁇ -butyrolactone was 60 wt% was higher than that in Comparative Example 1 in which the addition amount of ⁇ -butyrolactone was 100 wt% and Example 8 in which 90 wt% was added. It was found that the capacitor characteristics were improved.
- Example 16 An electrolytic capacitor was produced (Example 16). Table 4 shows the initial ESR characteristics, 125 ° C., 1500-hour no-load standing test, and ⁇ Cap of this solid electrolytic capacitor.
- solid electrolytic capacitors were produced by changing the electrode foils and aging conditions of Comparative Example 2 and Example 2, and designated as Comparative Example 3 and Example 17, respectively. Further, a solid electrolytic capacitor was produced in the same manner as in Example 17 except that no ion conductive material was filled, and it was designated as Conventional Example 1. The rated voltage of these solid electrolytic capacitors is 63 WV and 33 ⁇ F.
- Table 5 shows the withstand voltage increase rate before reflow and the withstand voltage decrease rate after reflow in Conventional Example 1, Comparative Example 3, and Example 17.
- the withstand voltage increase rate before reflow indicates the withstand voltage increase rate of Comparative Example 3 and Example 17 with reference to the withstand voltage before reflow of Conventional Example 1.
- the withstand voltage drop rate after reflow refers to the withstand voltage drop rate due to reflow, based on the withstand voltage before reflow of each solid electrolytic capacitor.
- the reflow peak temperature was 260 ° C.
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Abstract
Description
本発明に係る固体電解コンデンサの製造方法の一例は、以下の通りである。すなわち、表面に酸化皮膜層が形成された陽極箔と陰極箔をセパレータを介して巻回して、コンデンサ素子を形成し、このコンデンサ素子に修復化成を施す(第1の工程)。続いて、このコンデンサ素子を、導電性ポリマーの粒子または粉末と溶媒とを含む分散体に含浸させて導電性ポリマーからなる固体電解質層を形成する(第2の工程)。その後、このコンデンサ素子を所定のイオン伝導性物質に浸漬して、コンデンサ素子内の空隙部にこのイオン伝導性物質を充填する(第3の工程)。そして、このコンデンサ素子を外装ケースに挿入し、開口端部に封口ゴムを装着して、加締め加工によって封止した後、エージングを行い、固体電解コンデンサを形成する(第4の工程)。
修復化成の化成液としては、リン酸二水素アンモニウム、リン酸水素二アンモニウム等のリン酸系の化成液、ホウ酸アンモニウム等のホウ酸系の化成液、アジピン酸アンモニウム等のアジピン酸系の化成液を用いることができるが、なかでも、リン酸二水素アンモニウムを用いることが望ましい。また、浸漬時間は、5~120分が望ましい。
導電性高分子化合物分散体は、PEDOTの粉末とポリスチレンスルホン酸からなるドーパントの固形分を混合したものが好ましい。また、導電性高分子化合物分散体の溶媒は、導電性高分子化合物の粒子または粉末が溶解するものであれば良く、主として水が用いられる。ただし、必要に応じて分散体の溶媒としてエチレングリコールを用いてもよい。分散体の溶媒としてエチレングリコールを用いると、製品の電気的特性のうち、特にESRを低減できることが判明している。なお、導電性高分子化合物分散体の含浸性、電導度の向上のため、導電性高分子化合物分散体に各種添加剤を添加したり、カチオン添加による中和を行っても良い。
コンデンサ素子を導電性高分子化合物分散体に含浸する時間は、コンデンサ素子の大きさによって決まるが、φ5×3L程度のコンデンサ素子では5秒以上、φ9×5L程度のコンデンサ素子では10秒以上が望ましく、最低でも5秒間は含浸することが必要である。なお、長時間含浸しても特性上の弊害はない。また、このように含浸した後、減圧状態で保持すると好適である。その理由は、揮発性溶媒の残留量が少なくなるためであると考えられる。また、導電性高分子化合物分散体の含浸ならびに乾燥は、必要に応じて複数回行ってもよい。
コンデンサ素子内で導電性ポリマーからなる固体電解質層を形成した後、コンデンサ素子内に充填するイオン伝導性物質としては、通常の状態ではイオン解離している(解離定数を有する)電解質溶液(電解コンデンサ用電解液)を用いることができる。電解質溶液に使用できる溶媒としては、その沸点が、寿命試験温度である120℃以上の溶媒を用いることが好ましい。溶媒の例としては、γ-ブチロラクトン、エチレングリコール、スルホラン、ジメチルホルムアミド等が挙げられる。特に、エチレングリコールおよびγ-ブチロラクトンからなる混合溶媒を用いると、初期のESR特性が良好となり、さらに高温特性も良好となる。
上記のようなイオン伝導性物質をコンデンサ素子に充填する場合、その充填量は、コンデンサ素子内の空隙部に充填できれば任意であるが、コンデンサ素子内の空隙部の3~100%が好ましい。
上記のように、コンデンサ素子内に導電性ポリマーを形成した後、このコンデンサ素子を所定のイオン伝導性物質に浸漬して、コンデンサ素子内の空隙部にこのイオン伝導性物質を充填することにより、鉛フリーリフローによる耐電圧特性の劣化を防止することができる。
GBL:γ-ブチロラクトン
TMS:スルホラン
3MSN:3-メチルスルホラン
PEG:ポリオキシエチレングリコール
PhA:フタル酸
BSalA:ボロジサリチル酸
AzA:アゼライン酸
BeA: 安息香酸
TEA:トリエチルアミン
TMA:トリメチルアミン
EDMI:1-エチル-2,3-ジメチルイミダゾリニウム
NH3:アンモニア
Claims (6)
- 陽極電極箔と陰極電極箔とをセパレータを介して巻回したコンデンサ素子に、導電性ポリマーの粒子または粉末と溶媒とを含む分散体を含浸させて導電性ポリマーからなる固体電解質層を形成するとともに、該固体電解質層が形成されたコンデンサ素子内の空隙部に、エチレングリコール及びγ-ブチロラクトンを含む混合溶媒と、有機酸、無機酸、及び有機酸と無機酸との複合化合物の少なくとも1種のアンモニウム塩、四級アンモニウム塩、四級化アミジニウム塩、及びアミン塩から選ばれる溶質と、を含むイオン伝導性物質を充填させたことを特徴とする固体電解コンデンサ。
- 前記エチレングリコールは、混合溶媒に対して10~80wt%添加することを特徴とする請求項1に記載の固体電解コンデンサ。
- 前記γ-ブチロラクトンは、混合溶媒に対して10~60wt%添加することを特徴とする請求項1又は2に記載の固体電解コンデンサ。
- 前記イオン伝導性物質の混合溶媒に、更にスルホラン、3-メチルスルホラン、2,4-ジメチルスルホランから選ばれる少なくとも1種の溶媒を含むイオン伝導性物質を充填させたことを特徴とする請求項1乃至3いずれかに記載の固体電解コンデンサ。
- 前記分散体の溶媒がエチレングリコールを含むことを特徴とする請求項1乃至4いずれかに記載の固体電解コンデンサ。
- 陽極電極箔と陰極電極箔とをセパレータを介して巻回したコンデンサ素子に、導電性ポリマーの粒子または粉末と溶媒とを含む分散体を含浸させて導電性ポリマーからなる固体電解質層を形成する工程と、該固体電解質層が形成されたコンデンサ素子内の空隙部に、エチレングリコール及びγ-ブチロラクトンを含む混合溶媒と、有機酸、無機酸、及び有機酸と無機酸との複合化合物の少なくとも1種のアンモニウム塩、四級アンモニウム塩、四級化アミジニウム塩、及びアミン塩から選ばれる溶質と、を含むイオン伝導性物質を充填させる工程と、を有することを特徴とする固体電解コンデンサの製造方法。
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Also Published As
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JP6618106B2 (ja) | 2019-12-11 |
CN107610936A (zh) | 2018-01-19 |
EP2881958B1 (en) | 2020-08-26 |
EP2881958A4 (en) | 2016-03-23 |
US20150213962A1 (en) | 2015-07-30 |
US9589734B2 (en) | 2017-03-07 |
CN104471661A (zh) | 2015-03-25 |
JP6935438B2 (ja) | 2021-09-15 |
JP2017199929A (ja) | 2017-11-02 |
JP2018125554A (ja) | 2018-08-09 |
JP2018125555A (ja) | 2018-08-09 |
JPWO2014021333A1 (ja) | 2016-07-21 |
EP2881958A1 (en) | 2015-06-10 |
KR20150037906A (ko) | 2015-04-08 |
JP2019080076A (ja) | 2019-05-23 |
TWI588854B (zh) | 2017-06-21 |
CN107610936B (zh) | 2019-07-09 |
TW201411666A (zh) | 2014-03-16 |
CN104471661B (zh) | 2017-09-19 |
JP6737830B2 (ja) | 2020-08-12 |
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