WO2018220997A1 - 電解液及び電気化学デバイス - Google Patents
電解液及び電気化学デバイス Download PDFInfo
- Publication number
- WO2018220997A1 WO2018220997A1 PCT/JP2018/014283 JP2018014283W WO2018220997A1 WO 2018220997 A1 WO2018220997 A1 WO 2018220997A1 JP 2018014283 W JP2018014283 W JP 2018014283W WO 2018220997 A1 WO2018220997 A1 WO 2018220997A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- formula
- mass
- group
- electrolytic solution
- negative electrode
- Prior art date
Links
- 239000008151 electrolyte solution Substances 0.000 title claims abstract description 42
- 150000001875 compounds Chemical class 0.000 claims abstract description 61
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 31
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 17
- 125000001153 fluoro group Chemical group F* 0.000 claims abstract description 14
- 125000002947 alkylene group Chemical group 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- 125000000962 organic group Chemical group 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 10
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 8
- 125000004434 sulfur atom Chemical group 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 18
- 239000011255 nonaqueous electrolyte Substances 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000003575 carbonaceous material Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 12
- 239000010703 silicon Substances 0.000 claims description 12
- 239000010439 graphite Substances 0.000 claims description 11
- 229910002804 graphite Inorganic materials 0.000 claims description 11
- 239000003990 capacitor Substances 0.000 claims description 6
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 39
- 239000010410 layer Substances 0.000 description 23
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 21
- 229910001416 lithium ion Inorganic materials 0.000 description 21
- -1 siloxane compound Chemical class 0.000 description 18
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000007773 negative electrode material Substances 0.000 description 13
- 229940126062 Compound A Drugs 0.000 description 12
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 12
- 239000011135 tin Substances 0.000 description 12
- 229910052718 tin Inorganic materials 0.000 description 12
- 239000002612 dispersion medium Substances 0.000 description 10
- 239000003792 electrolyte Substances 0.000 description 10
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 8
- 239000002562 thickening agent Substances 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000010408 film Substances 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 229910052802 copper Inorganic materials 0.000 description 6
- 239000010949 copper Substances 0.000 description 6
- 238000011156 evaluation Methods 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 5
- 239000005001 laminate film Substances 0.000 description 5
- 229910003002 lithium salt Inorganic materials 0.000 description 5
- 159000000002 lithium salts Chemical class 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052759 nickel Inorganic materials 0.000 description 5
- 239000007774 positive electrode material Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000006258 conductive agent Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 102100031416 Gastric triacylglycerol lipase Human genes 0.000 description 3
- 101000941284 Homo sapiens Gastric triacylglycerol lipase Proteins 0.000 description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000006230 acetylene black Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000010280 constant potential charging Methods 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 238000002847 impedance measurement Methods 0.000 description 3
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 3
- 229910001947 lithium oxide Inorganic materials 0.000 description 3
- 239000002905 metal composite material Substances 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000005020 polyethylene terephthalate Substances 0.000 description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 description 2
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000002194 amorphous carbon material Substances 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000001768 carboxy methyl cellulose Substances 0.000 description 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229920001940 conductive polymer Polymers 0.000 description 2
- 238000010277 constant-current charging Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 229920001038 ethylene copolymer Polymers 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001386 lithium phosphate Inorganic materials 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 229910021382 natural graphite Inorganic materials 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 229920006132 styrene block copolymer Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000925 Cd alloy Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910018871 CoO 2 Inorganic materials 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 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
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229910011281 LiCoPO 4 Inorganic materials 0.000 description 1
- 229910010941 LiFSI Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910013528 LiN(SO2 CF3)2 Inorganic materials 0.000 description 1
- 229910013398 LiN(SO2CF2CF3)2 Inorganic materials 0.000 description 1
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910002991 LiNi0.5Co0.2Mn0.3O2 Inorganic materials 0.000 description 1
- 229910011328 LiNi0.6Co0.2Mn0.2O2 Inorganic materials 0.000 description 1
- 229910002995 LiNi0.8Co0.15Al0.05O2 Inorganic materials 0.000 description 1
- 229910012573 LiSiO Inorganic materials 0.000 description 1
- 229910012404 LiSnO Inorganic materials 0.000 description 1
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- YWJVFBOUPMWANA-UHFFFAOYSA-H [Li+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O Chemical compound [Li+].[V+5].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O YWJVFBOUPMWANA-UHFFFAOYSA-H 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 150000005676 cyclic carbonates Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007606 doctor blade method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910021480 group 4 element Inorganic materials 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 1
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229920003049 isoprene rubber Polymers 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910003473 lithium bis(trifluoromethanesulfonyl)imide Inorganic materials 0.000 description 1
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 description 1
- VDVLPSWVDYJFRW-UHFFFAOYSA-N lithium;bis(fluorosulfonyl)azanide Chemical compound [Li+].FS(=O)(=O)[N-]S(F)(=O)=O VDVLPSWVDYJFRW-UHFFFAOYSA-N 0.000 description 1
- QSZMZKBZAYQGRS-UHFFFAOYSA-N lithium;bis(trifluoromethylsulfonyl)azanide Chemical compound [Li+].FC(F)(F)S(=O)(=O)[N-]S(=O)(=O)C(F)(F)F QSZMZKBZAYQGRS-UHFFFAOYSA-N 0.000 description 1
- SBWRUMICILYTAT-UHFFFAOYSA-K lithium;cobalt(2+);phosphate Chemical compound [Li+].[Co+2].[O-]P([O-])([O-])=O SBWRUMICILYTAT-UHFFFAOYSA-K 0.000 description 1
- ILXAVRFGLBYNEJ-UHFFFAOYSA-K lithium;manganese(2+);phosphate Chemical compound [Li+].[Mn+2].[O-]P([O-])([O-])=O ILXAVRFGLBYNEJ-UHFFFAOYSA-K 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000001254 oxidized starch Substances 0.000 description 1
- 235000013808 oxidized starch Nutrition 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002589 poly(vinylethylene) polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(II) oxide Inorganic materials [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0567—Liquid materials characterised by the additives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/54—Electrolytes
- H01G11/58—Liquid electrolytes
- H01G11/64—Liquid electrolytes characterised by additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/121—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
- C07F7/122—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-C linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/121—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
- C07F7/123—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-halogen linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- 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
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/386—Silicon or alloys based on silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/387—Tin or alloys based on tin
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/04—Hybrid capacitors
- H01G11/06—Hybrid capacitors with one of the electrodes allowing ions to be reversibly doped thereinto, e.g. lithium ion capacitors [LIC]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to an electrolytic solution and an electrochemical device.
- Patent Document 1 discloses a non-aqueous electrolyte battery electrolyte containing a specific siloxane compound in order to improve cycle characteristics and internal resistance characteristics.
- an object of the present invention is to provide an electrolytic solution that can improve cycle characteristics of an electrochemical device and can reduce resistance. Another object of the present invention is to provide an electrochemical device having improved cycle characteristics and reduced resistance.
- the present invention provides an electrolytic solution containing a compound represented by the following formula (1) and a compound represented by the following formula (2).
- R 1 to R 3 each independently represents an alkyl group or a fluorine atom
- R 4 represents an alkylene group
- R 5 represents an organic group containing a sulfur atom and no nitrogen atom.
- R 6 to R 8 each independently represents an alkyl group or a fluorine atom
- R 9 represents an alkylene group
- R 10 represents an organic group containing a nitrogen atom and no sulfur atom.
- the number of silicon atoms in one molecule of the compound represented by the formula (1) is one.
- R 5 is a group represented by any of the following formula (3), formula (4), or formula (5).
- R 11 represents an alkyl group, and * represents a bond.
- R 12 represents an alkyl group, and * represents a bond.
- R 13 represents an alkyl group, and * represents a bond.
- R 10 is a group represented by the following formula (6).
- R 14 and R 15 each independently represent a hydrogen atom or an alkyl group, and * represents a bond.
- At least one of R 1 to R 3 is preferably a fluorine atom. Further, at least one of R 6 to R 8 is preferably a fluorine atom.
- the total content of the compound represented by the formula (1) and the compound represented by the formula (2) is preferably 10% by mass or less based on the total amount of the electrolytic solution.
- the present invention provides, as a second aspect, an electrochemical device comprising a positive electrode, a negative electrode, and the above electrolytic solution.
- the negative electrode preferably contains a carbon material.
- the carbon material preferably contains graphite.
- the negative electrode preferably further contains a material containing at least one element of the group consisting of silicon and tin.
- the electrochemical device is preferably a non-aqueous electrolyte secondary battery or a capacitor.
- an electrolytic solution capable of improving cycle characteristics of an electrochemical device and reducing resistance.
- an electrochemical device with improved cycle characteristics and reduced resistance can be provided.
- FIG. 6 is a graph showing evaluation results of cycle characteristics of Examples 1 to 3, Comparative Example 1 and Reference Examples 1 and 2.
- 3 is a graph showing evaluation results of AC impedance measurement in Examples 1 to 3 and Comparative Example 1.
- FIG. 1 is a perspective view showing an electrochemical device according to an embodiment.
- the electrochemical device is a non-aqueous electrolyte secondary battery.
- the nonaqueous electrolyte secondary battery 1 includes an electrode group 2 composed of a positive electrode, a negative electrode, and a separator, and a bag-shaped battery exterior body 3 that houses the electrode group 2.
- a positive electrode current collecting tab 4 and a negative electrode current collecting tab 5 are provided on the positive electrode and the negative electrode, respectively.
- the positive electrode current collecting tab 4 and the negative electrode current collecting tab 5 protrude from the inside of the battery outer package 3 to the outside so that the positive electrode and the negative electrode can be electrically connected to the outside of the nonaqueous electrolyte secondary battery 1, respectively. .
- the battery outer package 3 is filled with an electrolytic solution (not shown).
- the non-aqueous electrolyte secondary battery 1 may be a battery (coin type, cylindrical type, laminated type, etc.) having a shape other than the so-called “laminate type” as described above.
- the battery outer package 3 may be a container formed of a laminate film, for example.
- the laminate film may be a laminate film in which a resin film such as a polyethylene terephthalate (PET) film, a metal foil such as aluminum, copper, and stainless steel, and a sealant layer such as polypropylene are laminated in this order.
- PET polyethylene terephthalate
- metal foil such as aluminum, copper, and stainless steel
- sealant layer such as polypropylene
- FIG. 2 is an exploded perspective view showing an embodiment of the electrode group 2 in the nonaqueous electrolyte secondary battery 1 shown in FIG.
- the electrode group 2 includes a positive electrode 6, a separator 7, and a negative electrode 8 in this order.
- the positive electrode 6 and the negative electrode 8 are arranged so that the surfaces on the positive electrode mixture layer 10 side and the negative electrode mixture layer 12 side face the separator 7, respectively.
- the positive electrode 6 includes a positive electrode current collector 9 and a positive electrode mixture layer 10 provided on the positive electrode current collector 9.
- the positive electrode current collector 9 is provided with a positive electrode current collector tab 4.
- the positive electrode current collector 9 is made of, for example, aluminum, titanium, stainless steel, nickel, baked carbon, conductive polymer, conductive glass, or the like.
- the positive electrode current collector 9 may have a surface such as aluminum or copper that has been treated with carbon, nickel, titanium, silver, or the like for the purpose of improving adhesiveness, conductivity, and oxidation resistance.
- the thickness of the positive electrode current collector 9 is, for example, 1 to 50 ⁇ m from the viewpoint of electrode strength and energy density.
- the positive electrode mixture layer 10 contains a positive electrode active material, a conductive agent, and a binder.
- the thickness of the positive electrode mixture layer 10 is, for example, 20 to 200 ⁇ m.
- the positive electrode active material may be lithium oxide, for example.
- LiNi 1/3 Co 1/3 Mn 1/3 O 2 LiNi 0.5 Co 0.2 Mn 0.3 O 2, LiNi 0.6 Co 0.2 Mn 0.2 O 2, LiNi 0.8 Co It may be 0.1 Mn 0.1 O 2, LiNi 0.8 Co 0.15 Al 0.05 O 2 .
- the positive electrode active material may be, for example, lithium phosphate.
- the lithium phosphate include lithium manganese phosphate (LiMnPO 4 ), lithium iron phosphate (LiFePO 4 ), lithium cobalt phosphate (LiCoPO 4 ), and lithium vanadium phosphate (Li 3 V 2 (PO 4 ). 3 ).
- the content of the positive electrode active material may be 80% by mass or more, 85% by mass or more, and 99% by mass or less based on the total amount of the positive electrode mixture layer.
- the conductive agent may be a carbon black such as acetylene black or ketjen black, a carbon material such as graphite, graphene or carbon nanotube.
- the content of the conductive agent may be, for example, 0.01% by mass or more, 0.1% by mass or more, or 1% by mass or more based on the total amount of the positive electrode mixture layer, and is 50% by mass or less, 30% by mass. Or 15% by mass or less.
- binder examples include resins such as polyethylene, polypropylene, polyethylene terephthalate, polymethyl methacrylate, polyimide, aromatic polyamide, cellulose, and nitrocellulose; SBR (styrene-butadiene rubber), NBR (acrylonitrile-butadiene rubber), fluorine rubber Rubber such as isoprene rubber, butadiene rubber, ethylene-propylene rubber; styrene / butadiene / styrene block copolymer or hydrogenated product thereof, EPDM (ethylene / propylene / diene terpolymer), styrene / ethylene / butadiene / Thermoplastic elastomers such as ethylene copolymers, styrene / isoprene / styrene block copolymers or hydrogenated products thereof; syndiotactic-1, 2-polybutadiene, polyvinyl acetate, ethylene /
- the content of the binder may be, for example, 0.1% by mass or more, 1% by mass or more, or 1.5% by mass or more based on the total amount of the positive electrode mixture layer, and is 30% by mass or less, 20% by mass. % Or less, or 10 mass% or less.
- the separator 7 is not particularly limited as long as it electrically insulates between the positive electrode 6 and the negative electrode 8 and allows ions to pass therethrough and has resistance to oxidation on the positive electrode 6 side and reduction on the negative electrode 8 side.
- Examples of the material (material) of the separator 7 include resins and inorganic substances.
- the separator 7 is preferably a porous sheet or a nonwoven fabric formed of polyolefin such as polyethylene or polypropylene from the viewpoint of being stable with respect to the electrolytic solution and having excellent liquid retention.
- the separator 7 may be a separator in which a fibrous or particulate inorganic substance is adhered to a thin film substrate such as a nonwoven fabric, a woven fabric, or a microporous film.
- the negative electrode 8 includes a negative electrode current collector 11 and a negative electrode mixture layer 12 provided on the negative electrode current collector 11.
- the negative electrode current collector 11 is provided with a negative electrode current collector tab 5.
- the negative electrode current collector 11 is made of copper, stainless steel, nickel, aluminum, titanium, baked carbon, conductive polymer, conductive glass, aluminum-cadmium alloy, or the like.
- the negative electrode current collector 11 may be one in which the surface of copper, aluminum or the like is treated with carbon, nickel, titanium, silver or the like for the purpose of improving adhesiveness, conductivity, and reduction resistance.
- the thickness of the negative electrode current collector 11 is, for example, 1 to 50 ⁇ m from the viewpoint of electrode strength and energy density.
- the negative electrode mixture layer 12 contains, for example, a negative electrode active material and a binder.
- the negative electrode active material is not particularly limited as long as it is a material capable of occluding and releasing lithium ions.
- the negative electrode active material include carbon materials, metal composite oxides, oxides or nitrides of Group 4 elements such as tin, germanium, and silicon, lithium alone, lithium alloys such as lithium aluminum alloys, Sn, Si, and the like And metals capable of forming an alloy with lithium.
- the negative electrode active material is preferably at least one selected from the group consisting of carbon materials and metal composite oxides.
- the negative electrode active material may be one of these alone or a mixture of two or more.
- the shape of the negative electrode active material may be, for example, a particulate shape.
- carbon materials include amorphous carbon materials, natural graphite, composite carbonaceous materials in which a film of amorphous carbon material is formed on natural graphite, artificial graphite (resin raw materials such as epoxy resins and phenol resins, or petroleum, coal And the like obtained by firing a pitch-based raw material obtained from the like.
- the metal composite oxide contains one or both of titanium and lithium, and more preferably contains lithium.
- carbon materials have high conductivity and are particularly excellent in low temperature characteristics and cycle stability.
- graphite is preferable from the viewpoint of increasing the capacity.
- Graphite preferably has a carbon network plane interlayer (d002) of less than 0.34 nm in the X-ray wide angle diffraction method, more preferably 0.3354 nm or more and 0.337 nm or less.
- a carbonaceous material that satisfies such conditions may be referred to as pseudo-anisotropic carbon.
- the negative electrode active material may further include a material containing at least one element selected from the group consisting of silicon and tin.
- the material containing at least one element selected from the group consisting of silicon and tin may be a compound containing at least one element selected from the group consisting of silicon or tin alone, silicon and tin.
- the compound may be an alloy containing at least one element selected from the group consisting of silicon and tin.
- nickel, copper, iron, cobalt, manganese, zinc, indium, silver An alloy containing at least one selected from the group consisting of titanium, germanium, bismuth, antimony and chromium.
- the compound containing at least one element selected from the group consisting of silicon and tin may be an oxide, a nitride, or a carbide.
- a silicon oxide such as SiO or SiO 2
- It may be silicon carbide such as Si 3 N 4 , Si 2 N 2 O, SiC, LiSiO, SnO, SnO 2 , or LiSnO.
- the negative electrode mixture layer 12 preferably contains a carbon material as a negative electrode active material, more preferably contains graphite, more preferably carbon material, silicon and tin. And a mixture with a material containing at least one element selected from the group consisting of: and particularly preferably a mixture of graphite and silicon oxide.
- the mass ratio of the material (silicon oxide) containing at least one element selected from the group consisting of silicon and tin in the mixture may be 1% by mass or more, or 3% by mass or more, and 30% by mass or less. It may be.
- the content of the negative electrode active material may be 80% by mass or more, 85% by mass or more, and 99% by mass or less based on the total amount of the negative electrode mixture layer.
- the binder and its content may be the same as the binder and its content in the positive electrode mixture layer described above.
- the negative electrode mixture layer 12 may further contain a thickener in order to adjust the viscosity.
- the thickener is not particularly limited, and may be carboxymethylcellulose, methylcellulose, hydroxymethylcellulose, ethylcellulose, polyvinyl alcohol, oxidized starch, phosphorylated starch, casein, and salts thereof.
- the thickener may be one of these alone or a mixture of two or more.
- the content of the thickener may be 0.1% by mass or more, preferably 0.2% by mass or more, based on the total amount of the negative electrode mixture layer. More preferably, it is 0.5% by mass or more. From the viewpoint of suppressing a decrease in battery capacity or an increase in resistance between the negative electrode active materials, the content of the thickener may be 5% by mass or less, preferably 3% by mass based on the total amount of the negative electrode mixture layer. % Or less, and more preferably 2% by mass or less.
- the electrolytic solution contains a compound represented by the following formula (1), a compound represented by the following formula (2), an electrolyte salt, and a nonaqueous solvent.
- R 1 to R 3 each independently represents an alkyl group or a fluorine atom
- R 4 represents an alkylene group
- R 5 represents an organic group containing a sulfur atom and no nitrogen atom.
- R 6 to R 8 each independently represents an alkyl group or a fluorine atom
- R 9 represents an alkylene group
- R 10 represents an organic group containing a nitrogen atom and no sulfur atom.
- the alkyl group represented by R 1 to R 3 may have 1 or more carbon atoms and 3 or less carbon atoms.
- R 1 to R 3 may be a methyl group, an ethyl group, or a propyl group, and may be linear or branched. At least one of R 1 to R 3 is preferably a fluorine atom.
- Carbon number of the alkylene group represented by R 4 may be 1 or more, 2 or less, or 5 or less or 4 or less.
- the alkylene group represented by R 4 may be a methylene group, an ethylene group, a propylene group, a butylene group, or a pentylene group, and may be linear or branched.
- R 5 may be a group represented by the following formula (3) in one embodiment from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance.
- R 11 represents an alkyl group.
- the alkyl group may be the same group as the alkyl group represented by R 1 to R 3 described above. * Indicates a bond.
- R 5 may be a group represented by the following formula (4) in other embodiments from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance.
- R 12 may be an alkyl group.
- the alkyl group may be the same group as the alkyl group represented by R 1 to R 3 described above. * Indicates a bond.
- R 5 may be a group represented by the following formula (5) in other embodiments from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance.
- R 13 may be an alkyl group.
- the alkyl group may be the same group as the alkyl group represented by R 1 to R 3 described above. * Indicates a bond.
- the number of silicon atoms in one molecule of the compound represented by formula (1) is one. That is, in one embodiment, the organic group represented by R 5 does not contain a silicon atom.
- the alkyl group represented by R 6 to R 8 and the alkylene group represented by R 9 are respectively represented by the alkyl group represented by R 1 to R 3 and R 4 described above. It may be the same group as the alkylene group. At least one of R 6 to R 8 is preferably a fluorine atom.
- R 10 is a group represented by the following formula (6) in one embodiment from the viewpoint of further improving the cycle characteristics and low temperature input characteristics of the electrochemical device and further reducing the resistance. It's okay.
- R 14 and R 15 each independently represent a hydrogen atom or an alkyl group.
- the alkyl group represented by R 14 or R 15 may be the same group as the alkyl group represented by R 1 to R 3 described above. * Indicates a bond.
- the number of silicon atoms in one molecule of the compound represented by formula (2) is one. That is, in one embodiment, the organic group represented by R 10 does not contain a silicon atom.
- the electrolytic solution contains the compound represented by the formula (1) and the compound represented by the formula (2).
- the electrolytic solution is represented by the formula (1), and R 5 is a group represented by any one of the formula (3), the formula (4), or the formula (5), and the formula ( You may contain the compound represented by 2).
- the electrolytic solution may contain a compound represented by the formula (1) and a compound represented by the formula (2), wherein R 10 is a group represented by the formula (6). Good.
- the electrolyte solution is represented by Formula (1), R 5 is a group represented by Formula (3), Formula (2), and R 10 is Formula (6).
- a compound represented by formula (1), R 5 is a group represented by formula (4), and represented by formula (2).
- a compound in which R 10 is a group represented by formula (6) may be contained, a compound represented by formula (1), and R 5 is a group represented by formula (5); 2), and R 10 may contain a compound represented by formula (6).
- the total content of the compound represented by the formula (1) and the compound represented by the formula (2) is based on the total amount of the electrolyte from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance. Is preferably 0.001% by mass or more, 0.005% by mass or more, or 0.01% by mass or more, and preferably 10% by mass or less, 7% by mass or less, 5% by mass or less, and 3% by mass. Below, it is 2 mass% or less, 1.5 mass% or less, or 1 mass% or less. From the same viewpoint, the total content of the compound represented by the formula (1) and the compound represented by the formula (2) is preferably 0.001 to 10% by mass, 0, based on the total amount of the electrolytic solution.
- the content of the compound represented by the formula (1) is, for example, 0.001% by mass or more based on the total amount of the electrolytic solution from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance. 0.005 mass% or more, or 0.01 mass% or less, 8 mass% or less, 5 mass% or less, or 3 mass% or less.
- the content of the compound represented by the formula (2) is, for example, 0.001% by mass or more based on the total amount of the electrolytic solution from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance. 0.005% by mass or more, or 0.01% by mass or less, or 5% by mass or less, 3% by mass or less, or 1% by mass or less.
- Ratio of content of compound represented by formula (1) to content of compound represented by formula (2) (content of compound represented by formula (1) / compound represented by formula (2) Is preferably 0.01 or more, 0.05 or more, 0.1 or more, 1 or more, or 2 or more from the viewpoint of further improving the cycle characteristics of the electrochemical device and further reducing the resistance. Moreover, it is preferably 100 or less, more preferably 50 or less, and still more preferably 10 or less.
- the electrolyte salt may be a lithium salt, for example.
- the lithium salt include LiPF 6 , LiBF 4 , LiFSI (lithium bisfluorosulfonylimide), LiTFSI (lithium bistrifluoromethanesulfonylimide), LiClO 4 , LiB (C 6 H 5 ) 4 , LiCH 3 SO 3 , LiCF 3. It may be at least one selected from the group consisting of SO 3 , LiN (SO 2 F) 2 , LiN (SO 2 CF 3 ) 2 , and LiN (SO 2 CF 2 CF 3 ) 2 .
- the lithium salt preferably contains LiPF 6 from the viewpoint of further excellent solubility in a solvent, charge / discharge characteristics of a secondary battery, output characteristics, cycle characteristics, and the like.
- the concentration of the electrolyte salt is preferably 0.5 mol / L or more, more preferably 0.7 mol / L or more, and still more preferably 0.8, based on the total amount of the nonaqueous solvent. It is 8 mol / L or more, preferably 1.5 mol / L or less, more preferably 1.3 mol / L or less, and further preferably 1.2 mol / L or less.
- Nonaqueous solvents include, for example, ethylene carbonate, propylene carbonate, dimethyl carbonate, diethyl carbonate, methyl ethyl carbonate, ⁇ -butyl lactone, acetonitrile, 1,2-dimethoxyethane, dimethoxymethane, tetrahydrofuran, dioxolane, methylene chloride, methyl acetate, etc. It may be.
- the non-aqueous solvent may be one kind of these or a mixture of two or more kinds, preferably a mixture of two or more kinds.
- the electrolytic solution may further contain a compound represented by the formula (1), a compound represented by the formula (2), an electrolyte salt, and other materials other than the nonaqueous solvent.
- the other material may be, for example, nitrogen, sulfur, or a heterocyclic compound containing nitrogen and sulfur, a cyclic carboxylic acid ester, a fluorine-containing cyclic carbonate, or another compound having an unsaturated bond in the molecule.
- the present inventors have remarkably improved the cycle characteristics of the nonaqueous electrolyte secondary battery 1 and reduced the resistance by applying the above-described electrolyte. It revealed that.
- the present inventors infer the effects of using the above-described electrolyte as follows.
- the compound represented by the formula (1) and the compound represented by (2) form a stable film on the positive electrode or the negative electrode. Thereby, the fall of the output characteristic resulting from the decomposition product of electrolyte solution depositing on a positive electrode or a negative electrode can be suppressed. Furthermore, capacity reduction and resistance increase due to decomposition of the electrolyte salt are suppressed.
- the cycle characteristics of the nonaqueous electrolyte secondary battery 1 are improved and the resistance is reduced. Furthermore, since the compound represented by the formula (1) and the compound represented by the formula (2) itself have a skeleton containing Si, the generation of gas derived from the compound is reduced, and the non-aqueous electrolyte secondary Volume expansion when the battery 1 is stored at a high temperature can be suppressed.
- the manufacturing method of the nonaqueous electrolyte secondary battery 1 includes a first step of obtaining the positive electrode 6, a second step of obtaining the negative electrode 8, a third step of housing the electrode group 2 in the battery outer package 3, And a fourth step of injecting the electrolytic solution into the battery outer package 3.
- the positive electrode mixture is treated with a doctor blade method,
- the positive electrode 6 is obtained by coating on the positive electrode current collector 9 by a dipping method, a spray method or the like, and then volatilizing the dispersion medium.
- a compression molding step using a roll press may be provided as necessary.
- the positive electrode mixture layer 10 may be formed as a positive electrode mixture layer having a multilayer structure by performing the above-described steps from application of the positive electrode mixture to volatilization of the dispersion medium a plurality of times.
- the dispersion medium may be water, 1-methyl-2-pyrrolidone (hereinafter also referred to as NMP), and the like.
- the second step may be the same as the first step described above, and the method of forming the negative electrode mixture layer 12 on the negative electrode current collector 11 may be the same method as the first step described above. .
- the separator 7 is sandwiched between the produced positive electrode 6 and negative electrode 8, and the electrode group 2 is formed.
- the electrode group 2 is accommodated in the battery outer package 3.
- the electrolytic solution is injected into the battery outer package 3.
- the electrolytic solution can be prepared, for example, by first dissolving the electrolyte salt in a solvent and then dissolving other materials.
- the electrochemical device may be a capacitor. Similar to the non-aqueous electrolyte secondary battery 1 described above, the capacitor may include an electrode group including a positive electrode, a negative electrode, and a separator, and a bag-shaped battery outer package that houses the electrode group. The details of each component in the capacitor may be the same as those of the non-aqueous electrolyte secondary battery 1.
- Example 1 Lithium cobaltate (95% by mass) as a positive electrode active material, fibrous graphite (1% by mass) and acetylene black (AB) (1% by mass) as a conductive agent, and a binder (3% by mass) Were added sequentially and mixed.
- NMP as a dispersion medium was added and kneaded to prepare a slurry-like positive electrode mixture.
- a predetermined amount of this positive electrode mixture was uniformly and uniformly applied to an aluminum foil having a thickness of 20 ⁇ m as a positive electrode current collector. Then, after volatilizing the dispersion medium, the dispersion medium was compacted to a density of 3.6 g / cm 3 by pressing to obtain a positive electrode.
- the positive electrode cut into a 13.5 cm 2 square is sandwiched between polyethylene porous sheets (trade name: Hypore (registered trademark), manufactured by Asahi Kasei Co., Ltd., thickness 30 ⁇ m) as a separator, and further a 14.3 cm 2 square.
- the electrode group was fabricated by stacking the negative electrodes cut into pieces. This electrode group was accommodated in a container (battery exterior body) formed of an aluminum laminate film (trade name: aluminum laminate film, manufactured by Dai Nippon Printing Co., Ltd.). Subsequently, 1 mL of electrolyte solution was added in the container, the container was heat-welded, and the lithium ion secondary battery for evaluation was produced.
- VC vinylene carbonate
- a mixed solution of ethylene carbonate, dimethyl carbonate and diethyl carbonate containing 1 mol / L LiPF 6 with respect to the total amount of the mixed solution represented by the following formula (7): What added 0.45 mass% of compound A represented, and 0.05 mass% of compound B represented by following formula (8) was used.
- Example 2 In Example 1, the content of Compound A was changed to 0.25% by mass, and the content of Compound B was changed to 0.25% by mass on the basis of the total amount of the electrolyte solution. A lithium ion secondary battery was produced.
- Example 3 In Example 1, the amount of Compound A was changed to 0.05% by mass and the content of Compound B was changed to 0.45% by mass based on the total amount of the electrolyte solution. A secondary battery was produced.
- Example 1 a lithium ion secondary battery was produced in the same manner as in Example 1 except that Compound A and Compound B were not used.
- Example 2 a lithium ion secondary battery was produced in the same manner as in Example 1 except that the compound A was not included and the content of the compound B was changed to 0.50% by mass.
- the discharge capacity after charge / discharge in the first cycle in Comparative Example 1 was taken as 1, and the relative value (discharge capacity ratio) of the discharge capacity in each cycle in Examples 1 to 3 and Reference Examples 1 to 2 was determined.
- the relation between the number of cycles and the relative value of the discharge capacity is shown in FIGS.
- the results of Examples 1 to 3 are shown in FIGS. 3A to 3C, respectively.
- the results of Comparative Example 1 and Reference Examples 1 to 2 are shown in FIGS. All of c).
- the discharge capacity ratio after 300 cycles was 0.819 in Comparative Example 1, 0.855 in Reference Example 1, and 0.865 in Reference Example 2, whereas 0.877 in Example 1 and Example 2 was 0.874 and Example 3 was 0.875.
- the lithium ion secondary battery and compound of Reference Example 1 to which an electrolyte solution containing 0.50% by mass of Compound A is applied
- the lithium ion secondary battery of Reference Example 2 to which the electrolytic solution containing 0.50% by mass of B was applied was evaluated for cycle characteristics as compared with the lithium ion secondary battery of Comparative Example 1 not containing Compound A and Compound B.
- the lithium ion secondary batteries of Examples 1 to 3 to which the electrolytic solution containing both the compound A and the compound B were applied had cycle characteristics compared to the lithium ion secondary batteries of Comparative Example 1 and Reference Examples 1 and 2. Evaluation was even better.
- the lithium ion secondary batteries of Examples 1 to 3 to which the electrolytic solution containing both the compound A and the compound B was applied were 25 ° C. compared with the lithium ion secondary battery of Comparative Example 1. It became clear that the impedance (resistance) was low. Although the mechanism for improving this property is not necessarily clear, the addition of compounds A and B formed a stable and good ion-conductive film on the positive or negative electrode, and compounds A and B interact with lithium ions. This is considered to be because the lithium salt (LIPF 6 ) was stabilized or the activation energy for lithium desolvation decreased.
- non-aqueous electrolyte secondary battery electrochemical device
- 6 positive electrode
- 7 separator
- 8 negative electrode
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
[正極の作製]
正極活物質としてのコバルト酸リチウム(95質量%)に、導電剤としての繊維状の黒鉛(1質量%)及びアセチレンブラック(AB)(1質量%)と、結着剤(3質量%)とを順次添加し、混合した。得られた混合物に対し、分散媒としてのNMPを添加し、混練することによりスラリー状の正極合剤を調製した。この正極合剤を正極集電体としての厚さ20μmのアルミニウム箔に均等且つ均質に所定量塗布した。その後、分散媒を揮発させてから、プレスすることにより密度3.6g/cm3まで圧密化して、正極を得た。
負極活物質としての黒鉛及びケイ素酸化物に、結着剤と、増粘剤としてのカルボキシメチルセルロースとを添加した。これらの質量比については、黒鉛:ケイ素酸化物:結着剤:増粘剤=92:5:1.5:1.5とした。得られた混合物に対し、分散媒としての水を添加し、混練することによりスラリー状の負極合剤を調製した。この負極合剤を負極集電体としての厚さ10μmの圧延銅箔に均等且つ均質に所定量塗布した。その後、分散媒を揮発させてから、プレスすることにより密度1.6g/cm3まで圧密化して、負極を得た。
13.5cm2の四角形に切断した正極電極を、セパレータであるポリエチレン製多孔質シート(商品名:ハイポア(登録商標)、旭化成株式会社製、厚さ30μm)で挟み、さらに14.3cm2の四角形に切断した負極を重ね合わせて電極群を作製した。この電極群を、アルミニウム製のラミネートフィルム(商品名:アルミラミネートフィルム、大日本印刷株式会社製)で形成された容器(電池外装体)に収容した。次いで、容器の中に電解液を1mL添加し、容器を熱溶着させ、評価用のリチウムイオン二次電池を作製した。電解液としては、1mol/LのLiPF6を含むエチレンカーボネート、ジメチルカーボネート及びジエチルカーボネートの混合溶液に、混合溶液全量に対して、ビニレンカーボネート(VC)を1質量%と、下記式(7)で表される化合物Aを0.45質量%と、下記式(8)で表される化合物Bを0.05質量%とを添加したものを使用した。
実施例1において、電解液全量基準で、化合物Aの含有量を0.25質量%に変更し、化合物Bの含有量を0.25質量%に変更した以外は、実施例1と同様にしてリチウムイオン二次電池を作製した。
実施例1において、電解液全量基準で、化合物Aの含有量を0.05質量%、化合物Bの含有量を0.45質量%に変更した以外は、実施例1と同様にしてリチウムイオン二次電池を作製した。
実施例1において、化合物A及び化合物Bを使用しなかった以外は、実施例1と同様にしてリチウムイオン二次電池を作製した。
実施例1において、化合物Bを使用せず、化合物Aの含有量を0.50質量%に変更した以外は、実施例1と同様にしてリチウムイオン二次電池を作製した。
実施例1において、化合物Aを含まず、化合物Bの含有量を0.50質量%に変更した以外は、実施例1と同様にしてリチウムイオン二次電池を作製した。
作製したリチウムイオン電池を以下に示す方法で初回充放電を実施した。まず、25℃の環境下において0.1Cの電流値で定電流充電を上限電圧4.2Vまで行い、続いて4.2Vで定電圧充電を行った。充電終止条件は、電流値0.01Cとした。その後、0.1Cの電流値で終止電圧2.5Vの定電流放電を行った。この充放電サイクルを3回繰り返した(電流値の単位として用いた「C」とは、「電流値(A)/電池容量(Ah)」を意味する。)。
初回充放電後に、充放電を繰り返すサイクル試験によって、実施例1~3、比較例1、及び参考例1~2の各二次電池のサイクル特性を評価した。充電パターンとしては、45℃の環境下で、実施例1~3、比較例1及び参考例1~2の二次電池を0.5Cの電流値で定電流充電を上限電圧4.2Vまで行い、続いて4.2Vで定電圧充電を行った。充電終止条件は、電流値0.05Cとした。放電については、1Cで定電流放電を2.5Vまで行い、放電容量を求めた。この一連の充放電を300サイクル繰返し、充放電の度に放電容量を測定した。比較例1における1サイクル目の充放電後の放電容量を1として、実施例1~3及び参考例1~2における各サイクルでの放電容量の相対値(放電容量比率)を求めた。サイクル数と放電容量の相対値との関係を、図3(a)~(c)に示す。なお、実施例1~3の結果はそれぞれ図3(a)~(c)に示されており、比較のために、比較例1及び参考例1~2の結果は図3(a)~(c)のすべてに示されている。300サイクル後の放電容量比率は、比較例1では0.819、参考例1では0.855、参考例2では0・865であったのに対し、実施例1では0.877、実施例2では0.874、実施例3では0.875であった。
実施例1~3及び比較例1のリチウムイオン二次電池の抵抗を交流インピーダンス測定にて評価した。具体的には、作製したリチウムイオン電池を25℃の環境下において0.1Cの電流値で定電流充電を上限電圧4.2Vまで行い、続いて4.2Vで定電圧充電を行った。充電終止条件は、電流値0.01Cとした。それらのリチウムイオン二次電池を25℃の環境下で、10mVの振幅で20mHz~200kHzの周波数範囲で交流インピーダンス測定装置(1260型、Solartron社製)を用いて測定した。測定結果を図4(a)~(c)に示す。なお、実施例1~3の結果はそれぞれ図4(a)~(c)に示されており、比較のために、比較例1の結果は図3(a)~(c)のすべてに示されている。
Claims (12)
- 前記式(1)で表される化合物1分子中のケイ素原子の数は1個である、請求項1に記載の電解液。
- 前記R1~R3の少なくとも1つはフッ素原子である、請求項1~4のいずれか一項に記載の電解液。
- 前記R6~R8の少なくとも1つはフッ素原子である、請求項1~5のいずれか一項に記載の電解液。
- 前記式(1)で表される化合物及び前記式(2)で表される化合物の含有量の合計は、前記電解液全量を基準として10質量%以下である、請求項1~6のいずれか一項に記載の電解液。
- 正極と、負極と、請求項1~7のいずれか一項に記載の電解液と、を備える電気化学デバイス。
- 前記負極は炭素材料を含有する、請求項8に記載の電気化学デバイス。
- 前記炭素材料は黒鉛を含有する、請求項9に記載の電気化学デバイス。
- 前記負極は、ケイ素及びスズからなる群の少なくとも1種の元素を含む材料を更に含有する、請求項8又は9に記載の電気化学デバイス。
- 前記電気化学デバイスは、非水電解液二次電池又はキャパシタである、請求項8~11のいずれか一項に記載の電気化学デバイス。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18810812.0A EP3637528A4 (en) | 2017-06-01 | 2018-04-03 | ELECTROLYTE SOLUTION AND ELECTROCHEMICAL DEVICE |
CN201880035266.6A CN110679030B (zh) | 2017-06-01 | 2018-04-03 | 电解液及电化学装置 |
JP2019521983A JP7074132B2 (ja) | 2017-06-01 | 2018-04-03 | 電解液及び電気化学デバイス |
US16/615,666 US11398643B2 (en) | 2017-06-01 | 2018-04-03 | Electrolytic solution and electrochemical device |
KR1020197036220A KR102561972B1 (ko) | 2017-06-01 | 2018-04-03 | 전해액 및 전기화학 디바이스 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2017/020472 WO2018220795A1 (ja) | 2017-06-01 | 2017-06-01 | 電解液及び電気化学デバイス |
JPPCT/JP2017/020472 | 2017-06-01 | ||
PCT/JP2017/020484 WO2018220799A1 (ja) | 2017-06-01 | 2017-06-01 | 電解液及び電気化学デバイス |
JPPCT/JP2017/020484 | 2017-06-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018220997A1 true WO2018220997A1 (ja) | 2018-12-06 |
Family
ID=64455943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2018/014283 WO2018220997A1 (ja) | 2017-06-01 | 2018-04-03 | 電解液及び電気化学デバイス |
Country Status (6)
Country | Link |
---|---|
US (1) | US11398643B2 (ja) |
EP (1) | EP3637528A4 (ja) |
JP (1) | JP7074132B2 (ja) |
KR (1) | KR102561972B1 (ja) |
CN (1) | CN110679030B (ja) |
WO (1) | WO2018220997A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021235505A1 (ja) | 2020-05-19 | 2021-11-25 | 三菱ケミカル株式会社 | 非水系電解液及び非水系電解液電池 |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03236168A (ja) * | 1990-02-13 | 1991-10-22 | Nippon Telegr & Teleph Corp <Ntt> | 化学電池 |
JP2001185212A (ja) * | 1999-12-22 | 2001-07-06 | Tonen Chem Corp | 非水電解液及び該電解液を含む電池 |
JP2010044883A (ja) * | 2008-08-08 | 2010-02-25 | Mitsui Chemicals Inc | 非水電解液及びリチウム二次電池 |
WO2012029653A1 (ja) * | 2010-09-02 | 2012-03-08 | 日本電気株式会社 | 二次電池 |
CN102372732A (zh) * | 2010-08-27 | 2012-03-14 | 中国科学院广州能源研究所 | 有机硅醚室温离子液体电解质材料及其在电化学储能器件中的应用 |
CN102723528A (zh) * | 2012-06-06 | 2012-10-10 | 中国科学院广州能源研究所 | 两性离子液体电解质材料及其制备与在锂电池电解液中的应用 |
KR20130137941A (ko) * | 2012-06-08 | 2013-12-18 | 주식회사 엘지화학 | 리튬 이차전지용 비수 전해액 및 이를 구비한 리튬 이차전지 |
WO2014059709A1 (zh) * | 2012-10-15 | 2014-04-24 | 中国科学院广州能源研究所 | 含聚醚链有机卤硅烷及其在非水系锂离子电池电解液中的应用 |
JP2015005329A (ja) | 2012-06-13 | 2015-01-08 | セントラル硝子株式会社 | 非水電解液電池用電解液、及びこれを用いた非水電解液電池 |
WO2016006488A1 (ja) * | 2014-07-07 | 2016-01-14 | 株式会社Adeka | キャパシタ用非水電解液及びキャパシタ |
WO2016054621A1 (en) * | 2014-10-03 | 2016-04-07 | Silatronix, Inc. | Functionalized silanes and electrolyte compositions and electrochemical devices containing them |
JP2016126855A (ja) * | 2014-12-26 | 2016-07-11 | 三星エスディアイ株式会社Samsung SDI Co., Ltd. | リチウムイオン二次電池 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3053874A (en) * | 1959-12-21 | 1962-09-11 | Union Carbide Corp | Process for the production of cyanoalkylfluorosilane |
EP0532408A1 (fr) * | 1991-09-13 | 1993-03-17 | Saint-Gobain Vitrage International | Polymère conducteur protonique, application en tant qu'électrolyte dans des dispositifs électrochimiques |
US8076032B1 (en) * | 2004-02-04 | 2011-12-13 | West Robert C | Electrolyte including silane for use in electrochemical devices |
CN110061283A (zh) * | 2005-10-20 | 2019-07-26 | 三菱化学株式会社 | 锂二次电池以及其中使用的非水电解液 |
JP4241815B2 (ja) * | 2006-12-07 | 2009-03-18 | ソニー株式会社 | 電解液および電池 |
JP4379743B2 (ja) * | 2006-12-08 | 2009-12-09 | ソニー株式会社 | 電解液および二次電池 |
US20090088583A1 (en) * | 2007-10-01 | 2009-04-02 | West Robert C | Organosilicon Amine-Based Electrolytes |
JP5781293B2 (ja) * | 2010-11-16 | 2015-09-16 | 株式会社Adeka | 非水電解液二次電池 |
CN103339783B (zh) * | 2011-03-04 | 2016-12-07 | 株式会社电装 | 电池用非水电解液及使用了该电解液的非水电解液二次电池 |
EP2770573B1 (en) * | 2011-10-21 | 2017-07-26 | Mitsui Chemicals, Inc. | Nonaqueous electrolyte solution containing phosphonosulfonic acid compound, and lithium secondary battery |
WO2014003165A1 (ja) * | 2012-06-29 | 2014-01-03 | 三菱化学株式会社 | 非水系電解液及びそれを用いた非水系電解液電池 |
CA2972386C (en) * | 2013-06-04 | 2019-07-09 | Silatronix, Inc. | Nitrile-substituted silanes and electrolyte compositions and electrochemical devices containing them |
CN103401019B (zh) * | 2013-08-08 | 2016-03-16 | 东莞市杉杉电池材料有限公司 | 硅氮烷添加剂及应用其制备的防止钢壳腐蚀的锂离子电池电解液 |
CN103560270B (zh) * | 2013-10-30 | 2015-11-18 | 河南师范大学 | 一种锂离子电池用电解液 |
DE102013224159A1 (de) * | 2013-11-26 | 2015-05-28 | Wacker Chemie Ag | Silylierte cyclische Phosphonamide |
US20160248121A1 (en) * | 2013-12-25 | 2016-08-25 | Asahi Kasei Kabushiki Kaisha | Composition for addition to electrolyte solutions containing silyl group-containing compound, electrolyte solution for nonaqueous electricity storage devices containing said composition, and lithium ion secondary battery containing said electrolyte solution |
JP2015195195A (ja) * | 2014-03-18 | 2015-11-05 | 日立マクセル株式会社 | 非水電解質二次電池 |
EP3186262B1 (en) * | 2014-08-27 | 2020-01-29 | Arkema, Inc. | Fluorosilicon nitrile compounds |
JP6728148B2 (ja) * | 2014-10-02 | 2020-07-22 | シラトロニクス,インコーポレイテッド | 強化された電気化学的及び熱的安定性を有する有機ケイ素含有電解質組成物 |
US10541444B2 (en) | 2014-12-26 | 2020-01-21 | Samsung Sdi Co., Ltd. | Rechargeable lithium battery |
FR3033945B1 (fr) | 2015-03-16 | 2017-03-03 | Arkema France | Formulation d'electrolyte pour les batteries lithium-ion |
US9466857B1 (en) | 2015-06-22 | 2016-10-11 | Wildcat Discovery Technologies, Inc. | Electrolyte formulations for lithium ion batteries |
CN105037928A (zh) | 2015-07-01 | 2015-11-11 | 昆明亘宏源科技有限公司 | 一种电解阴极板高性能绝缘夹边条的制备方法 |
CN105914399B (zh) * | 2016-05-04 | 2019-02-22 | 宁德新能源科技有限公司 | 一种电解液以及含有该电解液的锂离子电池 |
CN106025358B (zh) | 2016-06-27 | 2018-12-07 | 中国科学院广州能源研究所 | 一种双氰基功能化的有机硅胺电解质材料 |
US10862166B2 (en) * | 2017-01-12 | 2020-12-08 | Lg Chem, Ltd. | Non-aqueous electrolyte solution and lithium secondary battery including the same |
US10273253B1 (en) * | 2017-10-10 | 2019-04-30 | Ppg Industries Ohio, Inc. | Method for producing an ionic liquid |
-
2018
- 2018-04-03 EP EP18810812.0A patent/EP3637528A4/en not_active Withdrawn
- 2018-04-03 CN CN201880035266.6A patent/CN110679030B/zh active Active
- 2018-04-03 US US16/615,666 patent/US11398643B2/en active Active
- 2018-04-03 KR KR1020197036220A patent/KR102561972B1/ko active IP Right Grant
- 2018-04-03 WO PCT/JP2018/014283 patent/WO2018220997A1/ja active Application Filing
- 2018-04-03 JP JP2019521983A patent/JP7074132B2/ja active Active
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03236168A (ja) * | 1990-02-13 | 1991-10-22 | Nippon Telegr & Teleph Corp <Ntt> | 化学電池 |
JP2001185212A (ja) * | 1999-12-22 | 2001-07-06 | Tonen Chem Corp | 非水電解液及び該電解液を含む電池 |
JP2010044883A (ja) * | 2008-08-08 | 2010-02-25 | Mitsui Chemicals Inc | 非水電解液及びリチウム二次電池 |
CN102372732A (zh) * | 2010-08-27 | 2012-03-14 | 中国科学院广州能源研究所 | 有机硅醚室温离子液体电解质材料及其在电化学储能器件中的应用 |
WO2012029653A1 (ja) * | 2010-09-02 | 2012-03-08 | 日本電気株式会社 | 二次電池 |
CN102723528A (zh) * | 2012-06-06 | 2012-10-10 | 中国科学院广州能源研究所 | 两性离子液体电解质材料及其制备与在锂电池电解液中的应用 |
KR20130137941A (ko) * | 2012-06-08 | 2013-12-18 | 주식회사 엘지화학 | 리튬 이차전지용 비수 전해액 및 이를 구비한 리튬 이차전지 |
JP2015005329A (ja) | 2012-06-13 | 2015-01-08 | セントラル硝子株式会社 | 非水電解液電池用電解液、及びこれを用いた非水電解液電池 |
WO2014059709A1 (zh) * | 2012-10-15 | 2014-04-24 | 中国科学院广州能源研究所 | 含聚醚链有机卤硅烷及其在非水系锂离子电池电解液中的应用 |
WO2016006488A1 (ja) * | 2014-07-07 | 2016-01-14 | 株式会社Adeka | キャパシタ用非水電解液及びキャパシタ |
WO2016054621A1 (en) * | 2014-10-03 | 2016-04-07 | Silatronix, Inc. | Functionalized silanes and electrolyte compositions and electrochemical devices containing them |
JP2016126855A (ja) * | 2014-12-26 | 2016-07-11 | 三星エスディアイ株式会社Samsung SDI Co., Ltd. | リチウムイオン二次電池 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3637528A4 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021235505A1 (ja) | 2020-05-19 | 2021-11-25 | 三菱ケミカル株式会社 | 非水系電解液及び非水系電解液電池 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2018220997A1 (ja) | 2020-05-21 |
CN110679030A (zh) | 2020-01-10 |
KR20200012887A (ko) | 2020-02-05 |
US20200119399A1 (en) | 2020-04-16 |
EP3637528A1 (en) | 2020-04-15 |
US11398643B2 (en) | 2022-07-26 |
KR102561972B1 (ko) | 2023-07-31 |
CN110679030B (zh) | 2022-08-16 |
EP3637528A4 (en) | 2021-01-20 |
JP7074132B2 (ja) | 2022-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018220997A1 (ja) | 電解液及び電気化学デバイス | |
US11444325B2 (en) | Electrolytic solution and electrochemical device | |
JP7127385B2 (ja) | 負極及び電気化学デバイス | |
WO2020116583A1 (ja) | 電解液及び電気化学デバイス | |
WO2020116574A1 (ja) | 電解液及び電気化学デバイス | |
US11411250B2 (en) | Electrolytic solution and electrochemical device | |
WO2023008569A1 (ja) | 電気化学デバイス、電解液、及び電解液に用いられる添加剤 | |
JP7415946B2 (ja) | 電解液及び電気化学デバイス | |
WO2018220799A1 (ja) | 電解液及び電気化学デバイス | |
WO2023190335A1 (ja) | 電気化学デバイス及び電気化学デバイス用電解液 | |
WO2018220795A1 (ja) | 電解液及び電気化学デバイス | |
WO2020027004A1 (ja) | 電解液及び電気化学デバイス | |
WO2020116578A1 (ja) | 電解液及び電気化学デバイス | |
WO2020027003A1 (ja) | 電解液及び電気化学デバイス |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18810812 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2019521983 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20197036220 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2018810812 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2018810812 Country of ref document: EP Effective date: 20200102 |