JP6685331B2 - セルロース系多層分離膜 - Google Patents
セルロース系多層分離膜 Download PDFInfo
- Publication number
- JP6685331B2 JP6685331B2 JP2017562951A JP2017562951A JP6685331B2 JP 6685331 B2 JP6685331 B2 JP 6685331B2 JP 2017562951 A JP2017562951 A JP 2017562951A JP 2017562951 A JP2017562951 A JP 2017562951A JP 6685331 B2 JP6685331 B2 JP 6685331B2
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- JP
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- Prior art keywords
- separation membrane
- secondary battery
- polyethylene
- cellulose
- resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000926 separation method Methods 0.000 title claims description 38
- 239000012528 membrane Substances 0.000 title claims description 34
- 229920002678 cellulose Polymers 0.000 title claims description 15
- 239000001913 cellulose Substances 0.000 title claims description 15
- -1 polyethylene Polymers 0.000 claims description 38
- 229920005989 resin Polymers 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 34
- 239000004698 Polyethylene Substances 0.000 claims description 29
- 229920000573 polyethylene Polymers 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 25
- 239000002121 nanofiber Substances 0.000 claims description 25
- 239000002105 nanoparticle Substances 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 20
- 239000010954 inorganic particle Substances 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 17
- 239000002904 solvent Substances 0.000 claims description 16
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 12
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 12
- 229920005672 polyolefin resin Polymers 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 8
- 238000003475 lamination Methods 0.000 claims description 7
- 229920002301 cellulose acetate Polymers 0.000 claims description 5
- 235000019441 ethanol Nutrition 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 4
- 229920001684 low density polyethylene Polymers 0.000 claims description 4
- 239000004702 low-density polyethylene Substances 0.000 claims description 4
- 229920005596 polymer binder Polymers 0.000 claims description 4
- 239000002491 polymer binding agent Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 4
- 229920002554 vinyl polymer Polymers 0.000 claims description 4
- 229920002284 Cellulose triacetate Polymers 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 3
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims description 3
- 229920001748 polybutylene Polymers 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 229920001727 cellulose butyrate Polymers 0.000 claims description 2
- MJEMIOXXNCZZFK-UHFFFAOYSA-N ethylone Chemical compound CCNC(C)C(=O)C1=CC=C2OCOC2=C1 MJEMIOXXNCZZFK-UHFFFAOYSA-N 0.000 claims 1
- 239000002585 base Substances 0.000 description 18
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 12
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- 238000012546 transfer Methods 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
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- 239000007774 positive electrode material Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
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- 229910052719 titanium Inorganic materials 0.000 description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 125000001731 2-cyanoethyl group Chemical group [H]C([H])(*)C([H])([H])C#N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 229910013716 LiNi Inorganic materials 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000004373 Pullulan Substances 0.000 description 2
- 229920001218 Pullulan Polymers 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
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- 238000007796 conventional method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
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- 238000012827 research and development Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- KXJGSNRAQWDDJT-UHFFFAOYSA-N 1-acetyl-5-bromo-2h-indol-3-one Chemical compound BrC1=CC=C2N(C(=O)C)CC(=O)C2=C1 KXJGSNRAQWDDJT-UHFFFAOYSA-N 0.000 description 1
- XCKPLVGWGCWOMD-YYEYMFTQSA-N 3-[[(2r,3r,4s,5r,6r)-6-[(2s,3s,4r,5r)-3,4-bis(2-cyanoethoxy)-2,5-bis(2-cyanoethoxymethyl)oxolan-2-yl]oxy-3,4,5-tris(2-cyanoethoxy)oxan-2-yl]methoxy]propanenitrile Chemical compound N#CCCO[C@H]1[C@H](OCCC#N)[C@@H](COCCC#N)O[C@@]1(COCCC#N)O[C@@H]1[C@H](OCCC#N)[C@@H](OCCC#N)[C@H](OCCC#N)[C@@H](COCCC#N)O1 XCKPLVGWGCWOMD-YYEYMFTQSA-N 0.000 description 1
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 229910017008 AsF 6 Inorganic materials 0.000 description 1
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- 229920000623 Cellulose acetate phthalate Polymers 0.000 description 1
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 1
- 229910020366 ClO 4 Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
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- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 1
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 1
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 229910018119 Li 3 PO 4 Inorganic materials 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910007969 Li-Co-Ni Inorganic materials 0.000 description 1
- 229910013043 Li3PO4-Li2S-SiS2 Inorganic materials 0.000 description 1
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- 229910012810 Li3PO4—Li2S-SiS2 Inorganic materials 0.000 description 1
- 229910012797 Li3PO4—Li2S—SiS2 Inorganic materials 0.000 description 1
- 229910010116 LiAlTiP Inorganic materials 0.000 description 1
- 229910013733 LiCo Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910011281 LiCoPO 4 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910010835 LiI-Li2S-P2S5 Inorganic materials 0.000 description 1
- 229910010840 LiI—Li2S—P2S5 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910015644 LiMn 2 - z Ni Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910014689 LiMnO Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910006555 Li—Co—Ni Inorganic materials 0.000 description 1
- 229910003307 Ni-Cd Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- MKGYHFFYERNDHK-UHFFFAOYSA-K P(=O)([O-])([O-])[O-].[Ti+4].[Li+] Chemical compound P(=O)([O-])([O-])[O-].[Ti+4].[Li+] MKGYHFFYERNDHK-UHFFFAOYSA-K 0.000 description 1
- PPVYRCKAOVCGRJ-UHFFFAOYSA-K P(=S)([O-])([O-])[O-].[Ge+2].[Li+] Chemical compound P(=S)([O-])([O-])[O-].[Ge+2].[Li+] PPVYRCKAOVCGRJ-UHFFFAOYSA-K 0.000 description 1
- 229910020215 Pb(Mg1/3Nb2/3)O3PbTiO3 Inorganic materials 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 229910020346 SiS 2 Inorganic materials 0.000 description 1
- 229910002367 SrTiO Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- CVJYOKLQNGVTIS-UHFFFAOYSA-K aluminum;lithium;titanium(4+);phosphate Chemical compound [Li+].[Al+3].[Ti+4].[O-]P([O-])([O-])=O CVJYOKLQNGVTIS-UHFFFAOYSA-K 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001593 boehmite Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229940081734 cellulose acetate phthalate Drugs 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
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- 229910052732 germanium Inorganic materials 0.000 description 1
- PVADDRMAFCOOPC-UHFFFAOYSA-N germanium monoxide Inorganic materials [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 1
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- 239000010439 graphite Substances 0.000 description 1
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- 229910052736 halogen Inorganic materials 0.000 description 1
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- 239000012456 homogeneous solution Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 description 1
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- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- SMBGWMJTOOLQHN-UHFFFAOYSA-N lead;sulfuric acid Chemical compound [Pb].OS(O)(=O)=O SMBGWMJTOOLQHN-UHFFFAOYSA-N 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910000664 lithium aluminum titanium phosphates (LATP) Inorganic materials 0.000 description 1
- 229910000659 lithium lanthanum titanates (LLT) Inorganic materials 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
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- 230000000704 physical effect Effects 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920001197 polyacetylene Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
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- 239000011148 porous material Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- BHZCMUVGYXEBMY-UHFFFAOYSA-N trilithium;azanide Chemical compound [Li+].[Li+].[Li+].[NH2-] BHZCMUVGYXEBMY-UHFFFAOYSA-N 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
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Description
周期律表の1族、2族、3族元素、ハロゲン;0<x≦1;1≦y≦3;1≦z≦8)の金属複合酸化物;リチウム金属;リチウム合金;ケイ素系合金;スズ系合金;SnO、SnO2、PbO、PbO2、Pb2O3、Pb3O4、Sb2O3、Sb2O4、Sb2O5、GeO、GeO2、Bi2O3、Bi2O4、Bi2O5などの酸化物;ポリアセチレンなどの導電性高分子;Li−Co−Ni系材料などを使用できる。一方、負極電流集電体としては、ステンレス鋼、ニッケル、銅、チタンまたはこれらの合金などを使用できる。
Claims (11)
- 二次電池用分離膜であって、
セルロース系ナノ繊維及びポリエチレンナノ粒子を含む基材層と、
前記基材層の一面又は両面に形成され、ポリオレフィン樹脂からなる樹脂層とを備えてなり、
前記基材層及び前記樹脂層はシャットダウン機能層であり、
前記ポリエチレンナノ粒子は、80℃〜100℃の融点を有してなり、及び、低密度ポリエチレン(LDPE)を含んでなるものであり、
前記セルロース系ナノ繊維の直径は10nm〜500nmであり、
前記セルロース系ナノ繊維の長さは1μm〜10mmであり、
前記ポリエチレンナノ粒子の粒子径は50nm〜500nmであることを特徴とする、二次電池用分離膜。 - 前記ポリオレフィン樹脂が、ポリエチレン、ポリプロピレン、ポリブチレン及びポリペンテンからなる群より選択された一種以上であることを特徴とする、請求項1に記載の二次電池用分離膜。
- 前記ポリオレフィン樹脂の融点が100℃〜140℃であることを特徴とする、請求項1又は2に記載の二次電池用分離膜。
- 前記樹脂層が、無機物粒子及び高分子バインダーをさらに含むことを特徴とする、請求項1〜3の何れか一項に記載の二次電池用分離膜。
- 前記樹脂層の厚さが3μm〜20μmであり、
前記基材層の厚さが5μm〜20μmであることを特徴とする、請求項1〜4の何れか一項に記載の二次電池用分離膜。 - 前記セルロース系ナノ繊維が、セルロースアセテート、セルローストリアセテート及びセルロースブチレートからなる群より選択された一種からなることを特徴とする、請求項1〜5の何れか一項に記載の二次電池用分離膜。
- 前記ポリエチレンナノ粒子は500g/モル〜900g/モルの平均分子量を有するものであることを特徴とする、請求項1〜6の何れか一項に記載の二次電池用分離膜。
- 前記セルロース系ナノ繊維と前記ポリエチレンナノ粒子とが、7:3〜9:1の重量比で含まれてなることを特徴とする、請求項1〜7の何れか一項に記載の二次電池用分離膜。
- 請求項1〜8の何れか一項に記載された二次電池用分離膜の製造方法であって、
前記セルロース系ナノ繊維と前記ポリエチレンナノ粒子とを溶媒に分散させた混合物を使用してシートを製造する段階と、
前記溶媒を除去して前記セルロース系ナノ繊維と前記ポリエチレンナノ粒子とを含む基材層を製造する段階と、
前記基材層の一面又は両面にポリオレフィン樹脂からなる樹脂層をラミネーション方式で積層させる段階とを含んでなる、二次電池用分離膜の製造方法。 - 前記溶媒が、水、メチルアルコール、エチルアルコール、プロピルアルコール、アセトン、エチルアセテート、メチルエチルケトン及びトルエンからなる群より選択された一種以上のものであることを特徴とする、請求項9に記載の二次電池用分離膜の製造方法。
- 前記混合物が、気孔形成用樹脂を更に含んでなり、
前記気孔形成用樹脂が、ポリエチレングリコール、ポリビニルアルコール及びポリビニルプロピレンからなる群より選択された一種以上のものであり、
前記気孔形成用樹脂は、前記セルロース系ナノ繊維同士を結着し、前記基材層に多孔性構造を形成させるものである、請求項9又は10に記載の二次電池用分離膜の製造方法。
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JP4163894B2 (ja) | 2002-04-24 | 2008-10-08 | 帝人株式会社 | リチウムイオン二次電池用セパレータ |
JP4705335B2 (ja) * | 2004-03-19 | 2011-06-22 | 株式会社巴川製紙所 | 電子部品用セパレータ及びその製造方法 |
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JP6370154B2 (ja) * | 2013-10-29 | 2018-08-08 | パナソニック株式会社 | 非水電解質二次電池用セパレータ及び非水電解質二次電池 |
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