JP2005347240A - リチウムイオン二次電池用電解液及びこれを含むリチウムイオン二次電池 - Google Patents
リチウムイオン二次電池用電解液及びこれを含むリチウムイオン二次電池 Download PDFInfo
- Publication number
- JP2005347240A JP2005347240A JP2005118569A JP2005118569A JP2005347240A JP 2005347240 A JP2005347240 A JP 2005347240A JP 2005118569 A JP2005118569 A JP 2005118569A JP 2005118569 A JP2005118569 A JP 2005118569A JP 2005347240 A JP2005347240 A JP 2005347240A
- Authority
- JP
- Japan
- Prior art keywords
- lithium ion
- ion secondary
- secondary battery
- carbonate
- electrolyte
- 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.)
- Granted
Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 55
- 239000003792 electrolyte Substances 0.000 title claims abstract description 30
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910003002 lithium salt Inorganic materials 0.000 claims abstract description 15
- 159000000002 lithium salts Chemical class 0.000 claims abstract description 15
- 239000011356 non-aqueous organic solvent Substances 0.000 claims abstract description 12
- 239000000654 additive Substances 0.000 claims abstract description 8
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 239000008151 electrolyte solution Substances 0.000 claims description 30
- 239000000178 monomer Substances 0.000 claims description 22
- 229920000642 polymer Polymers 0.000 claims description 17
- -1 LiCF 3 SO 3 Inorganic materials 0.000 claims description 12
- 239000002904 solvent Substances 0.000 claims description 12
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims description 10
- 239000003960 organic solvent Substances 0.000 claims description 10
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 8
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 6
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 claims description 6
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 150000001451 organic peroxides Chemical class 0.000 claims description 6
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 5
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 claims description 5
- 239000007774 positive electrode material Substances 0.000 claims description 5
- GETTZEONDQJALK-UHFFFAOYSA-N (trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC=C1 GETTZEONDQJALK-UHFFFAOYSA-N 0.000 claims description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 claims description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 4
- 239000007869 azo polymerization initiator Substances 0.000 claims description 4
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 4
- FKRCODPIKNYEAC-UHFFFAOYSA-N ethyl propionate Chemical compound CCOC(=O)CC FKRCODPIKNYEAC-UHFFFAOYSA-N 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- PYLWMHQQBFSUBP-UHFFFAOYSA-N monofluorobenzene Chemical compound FC1=CC=CC=C1 PYLWMHQQBFSUBP-UHFFFAOYSA-N 0.000 claims description 4
- 239000007773 negative electrode material Substances 0.000 claims description 4
- 150000002978 peroxides Chemical class 0.000 claims description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims description 4
- ZZXUZKXVROWEIF-UHFFFAOYSA-N 1,2-butylene carbonate Chemical compound CCC1COC(=O)O1 ZZXUZKXVROWEIF-UHFFFAOYSA-N 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 claims description 3
- 229910013870 LiPF 6 Inorganic materials 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 150000005678 chain carbonates Chemical class 0.000 claims description 3
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 3
- VUPKGFBOKBGHFZ-UHFFFAOYSA-N dipropyl carbonate Chemical compound CCCOC(=O)OCCC VUPKGFBOKBGHFZ-UHFFFAOYSA-N 0.000 claims description 3
- CYEDOLFRAIXARV-UHFFFAOYSA-N ethyl propyl carbonate Chemical compound CCCOC(=O)OCC CYEDOLFRAIXARV-UHFFFAOYSA-N 0.000 claims description 3
- KKQAVHGECIBFRQ-UHFFFAOYSA-N methyl propyl carbonate Chemical compound CCCOC(=O)OC KKQAVHGECIBFRQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 3
- FVQMJJQUGGVLEP-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy 2-ethylhexaneperoxoate Chemical compound CCCCC(CC)C(=O)OOOC(C)(C)C FVQMJJQUGGVLEP-UHFFFAOYSA-N 0.000 claims description 2
- LGJCFVYMIJLQJO-UHFFFAOYSA-N 1-dodecylperoxydodecane Chemical compound CCCCCCCCCCCCOOCCCCCCCCCCCC LGJCFVYMIJLQJO-UHFFFAOYSA-N 0.000 claims description 2
- MMZYCBHLNZVROM-UHFFFAOYSA-N 1-fluoro-2-methylbenzene Chemical compound CC1=CC=CC=C1F MMZYCBHLNZVROM-UHFFFAOYSA-N 0.000 claims description 2
- ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 2,3-dimethylbutane Chemical group CC(C)C(C)C ZFFMLCVRJBZUDZ-UHFFFAOYSA-N 0.000 claims description 2
- TVWBTVJBDFTVOW-UHFFFAOYSA-N 2-methyl-1-(2-methylpropylperoxy)propane Chemical group CC(C)COOCC(C)C TVWBTVJBDFTVOW-UHFFFAOYSA-N 0.000 claims description 2
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 claims description 2
- WPIYAXQPRQYXCN-UHFFFAOYSA-N 3,3,5-trimethylhexanoyl 3,3,5-trimethylhexaneperoxoate Chemical compound CC(C)CC(C)(C)CC(=O)OOC(=O)CC(C)(C)CC(C)C WPIYAXQPRQYXCN-UHFFFAOYSA-N 0.000 claims description 2
- JMFSFLTZXGGOHU-UHFFFAOYSA-N 7,7-dimethyl-2-[(2-methylpropan-2-yl)oxy]octanoic acid Chemical compound CC(C)(C)CCCCC(C(O)=O)OC(C)(C)C JMFSFLTZXGGOHU-UHFFFAOYSA-N 0.000 claims description 2
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims description 2
- 229910010238 LiAlCl 4 Inorganic materials 0.000 claims description 2
- 229910010090 LiAlO 4 Inorganic materials 0.000 claims description 2
- 229910015015 LiAsF 6 Inorganic materials 0.000 claims description 2
- 229910013063 LiBF 4 Inorganic materials 0.000 claims description 2
- 229910013372 LiC 4 Inorganic materials 0.000 claims description 2
- 229910013684 LiClO 4 Inorganic materials 0.000 claims description 2
- 229910013528 LiN(SO2 CF3)2 Inorganic materials 0.000 claims description 2
- 229910013385 LiN(SO2C2F5)2 Inorganic materials 0.000 claims description 2
- 229910012513 LiSbF 6 Inorganic materials 0.000 claims description 2
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 claims description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims description 2
- 150000001491 aromatic compounds Chemical group 0.000 claims description 2
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 2
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 claims description 2
- 229940093499 ethyl acetate Drugs 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims description 2
- 229940017219 methyl propionate Drugs 0.000 claims description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 claims description 2
- 229920005735 poly(methyl vinyl ketone) Polymers 0.000 claims description 2
- 229940090181 propyl acetate Drugs 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 claims 2
- XJOBOFWTZOKMOH-UHFFFAOYSA-N decanoyl decaneperoxoate Chemical compound CCCCCCCCCC(=O)OOC(=O)CCCCCCCCC XJOBOFWTZOKMOH-UHFFFAOYSA-N 0.000 claims 1
- 125000005843 halogen group Chemical group 0.000 claims 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims 1
- 230000008961 swelling Effects 0.000 abstract description 9
- 229910052744 lithium Inorganic materials 0.000 description 13
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 239000005518 polymer electrolyte Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011255 nonaqueous electrolyte Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 3
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical class COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000003660 carbonate based solvent Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 239000011267 electrode slurry Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000005486 organic electrolyte Substances 0.000 description 2
- 238000009783 overcharge test Methods 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 229920000137 polyphosphoric acid Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- NLBJAOHLJABDAU-UHFFFAOYSA-N (3-methylbenzoyl) 3-methylbenzenecarboperoxoate Chemical compound CC1=CC=CC(C(=O)OOC(=O)C=2C=C(C)C=CC=2)=C1 NLBJAOHLJABDAU-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- WYGWHHGCAGTUCH-UHFFFAOYSA-N 2-[(2-cyano-4-methylpentan-2-yl)diazenyl]-2,4-dimethylpentanenitrile Chemical compound CC(C)CC(C)(C#N)N=NC(C)(C#N)CC(C)C WYGWHHGCAGTUCH-UHFFFAOYSA-N 0.000 description 1
- QUBJDMPBDURTJT-UHFFFAOYSA-N 3-chlorothiophene Chemical compound ClC=1C=CSC=1 QUBJDMPBDURTJT-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 229910000733 Li alloy 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
- 229910013716 LiNi Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000006258 conductive agent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000009831 deintercalation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 150000002367 halogens Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- SDAXRHHPNYTELL-UHFFFAOYSA-N heptanenitrile Chemical compound CCCCCCC#N SDAXRHHPNYTELL-UHFFFAOYSA-N 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000009830 intercalation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012934 organic peroxide initiator Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- RZFODFPMOHAYIR-UHFFFAOYSA-N oxepan-2-one;prop-2-enoic acid Chemical compound OC(=O)C=C.O=C1CCCCCO1 RZFODFPMOHAYIR-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- 229920006254 polymer film Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- HKJYVRJHDIPMQB-UHFFFAOYSA-N propan-1-olate;titanium(4+) Chemical compound CCCO[Ti](OCCC)(OCCC)OCCC HKJYVRJHDIPMQB-UHFFFAOYSA-N 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- QHGNHLZPVBIIPX-UHFFFAOYSA-N tin(ii) oxide Chemical class [Sn]=O QHGNHLZPVBIIPX-UHFFFAOYSA-N 0.000 description 1
- 229910000314 transition metal oxide Inorganic materials 0.000 description 1
- 239000003799 water insoluble solvent Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
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
- H01M10/052—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
- 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
- H01M10/0565—Polymeric materials, e.g. gel-type or solid-type
-
- 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
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Abstract
【解決手段】 前記電解液は、非水性有機溶媒、リチウム塩及びトリフェニルホスフェート添加剤を含む。本発明の電解液を含むリチウムイオン二次電池は、過充電安全性を向上させ、スエリング特性、高温保存安全性及びサイクル寿命特性などの電気化学的特性も優れる。
【選択図】 なし
Description
非水性有機溶媒としてエチレンカーボネート(EC):エチルメチルカーボネート(EMC):プロピレンカーボネート(PC):フルオロベンゼン(FB)を30:55:5:10の体積比で混合し、前記非水性有機溶媒にリチウム塩として1M LiPF6を添加した後、高分子電解質形成用モノマー(アクリレート系モノマーのプリポリマー)であるポリエステルヘキサアクリレート系化合物0.5質量%、有機過酸化物であるジラウロイルパーオキサイド0.0033質量%及びトリフェニルホスフェート1質量%を添加してリチウムイオン二次電池用電解液を製造した。
トリフェニルホスフェートを3質量%添加した以外は、前記実施例1と同様に実施した。
トリフェニルホスフェートを5質量%添加した以外は、前記実施例1と同様に実施した。
トリフェニルホスフェートの代わりに、トリブチルホスフェートを5質量%添加した以外は、前記実施例1と同様に実施した。
トリフェニルホスフェート及びトリブチルホスフェートを添加しなかた以外は、前記実施例1と同様に実施した。
過充電試験で前記実施例1〜3、比較例1〜2の方法により製造された電池を常温(25℃)で充電状態から1C(790mAh)/12Vで定電流/定電圧条件で2時間半の間、各5個ずつ過充電を行った。電池状態を確認し、その結果を過充電結果として表1に表した。
また、スエリング試験で、0.5C(375mAh)の電流で4.2Vまで3時間充電された電池を90℃オーブンで4時間放置した後、厚さの変化状態を確認し、スエリング特性を評価して、その結果を、90℃4時間放置後厚さ増加特性として表1に表した。
また、高温放置試験で、充電状態の電池を85℃で4日間放置し、その後の0.5Cでの放電容量を高温放置前の0.5C放電容量と比較し、高温放電特性を評価して、その結果を高温保存回復特性として表1に表した。
また、寿命試験で1C/4.2V、定電流−定電圧、0.1Cカット−オフ充電、1C/3.0Vカット−オフ放電をして、100サイクル目の寿命特性を評価して、その結果を100サイクル容量保存特性として表1に表した。
Claims (20)
- 非水性有機溶媒、リチウム塩及びトリフェニルホスフェート添加剤を含むことを特徴とするリチウムイオン二次電池用電解液。
- 前記トリフェニルホスフェートの含量は、前記電解液全体に対して0.1〜10質量%であることを特徴とする請求項1に記載のリチウムイオン二次電池用電解液。
- 前記リチウム塩は、LiPF6、LiBF4、LiSbF6、LiAsF6、LiClO4、LiAlO4、LiAlCl4、LiCF3SO3、LiN(SO2CF3)2、LiC4F9SO3、LiN(SO2C2F5)2、LiN(CxF2x+1SO2)(CyF2y+1SO2)(ここで、x及びyは自然数である)、LiCl及びLiIよりなる群から選らばれた1種、または、2種以上を混合したことを特徴とする請求項1に記載のリチウムイオン二次電池用電解液。
- 前記リチウム塩は、0.6〜2.0Mの濃度で使用されることを特徴とする請求項3に記載のリチウムイオン二次電池用電解液。
- 前記非水性有機溶媒は、カーボネート、エステル、エーテル及びケトンよりなる群から選ばれた少なくとも1つの溶媒であることを特徴とする請求項1記載のリチウムイオン二次電池用電解液。
- 前記カーボネートは、ジメチルカーボネート、ジエチルカーボネート、ジプロピルカーボネート、エチルメチルカーボネート、メチルプロピルカーボネート、エチルプロピルカーボネート、エチレンカーボネート、プロピレンカーボネート及びブチレンカーボネートよりなる群から選ばれた少なくとも1つの溶媒であることを特徴とする請求項5に記載のリチウムイオン二次電池用電解液。
- 前記カーボネート溶媒は、環状カーボネートと鎖状カーボネートとの混合溶媒であることを特徴とする請求項6に記載のリチウムイオン二次電池用電解液。
- 前記非水性有機溶媒は、前記カーボネート溶媒と芳香族炭化水素系有機溶媒との混合溶媒であることを特徴とする請求項5に記載のリチウムイオン二次電池用電解液。
- 前記芳香族炭化水素系有機溶媒は、ベンゼン、フルオロベンゼン、クロロベンゼン、トルエン、フルオロトルエン、トリフルオロトルエン、キシレン及びこれらの混合物からなる群から選択される少なくとも1つの溶媒であることを特徴とする請求項9に記載のリチウムイオン二次電池用電解液。
- 前記カーボネート溶媒と芳香族炭化水素系溶媒とは1:1〜30:1の体積比で混合されることを特徴とする請求項10に記載のリチウムイオン二次電池用電解液。
- 前記エーテルは、テトラヒドロフラン、または、2−メチルテトラヒドロフランであることを特徴とする請求項5に記載のリチウムイオン二次電池用電解液。
- 前記エステルは、メチルアセテート、エチルアセテート、プロピルアセテート、メチルプロピオネート、エチルプロピオネート及びγ−ブチロラクトンからなる群から選択される少なくとも1つの溶媒であることを特徴とする請求項5に記載のリチウムイオン二次電池用電解液。
- 前記ケトンは、ポリメチルビニルケトンであることを特徴とする請求項5に記載のリチウムイオン二次電池用電解液。
- アクリレート系モノマー、エポキシ系モノマー、イソシアナート系モノマー及びこれらモノマーのプリポリマーよりなる群から選択されたいずれかの一つのモノマーと有機過酸化物、または、アゾ系重合開始剤を更に含むことを特徴とする請求項1に記載のリチウムイオン二次電池用電解液。
- 前記モノマーの含量は、電解液に対して0.1〜5質量%であることを特徴とする請求項15に記載のリチウムイオン二次電池用電解液。
- 前記有機過酸化物の含量は、前記モノマー重量に対して0.01〜1.0質量%であることを特徴とする請求項15に記載のリチウムイオン二次電池用電解液。
- 前記有機過酸化物は、イソブチルパーオキサイド、ラウリルパーオキサイド、ラウロイルパーオキサイド、ジラウロイルパーオキサイド、ジデカノイルパーオキサイド、ジクミルパーオキサイド、ジ−t−ブチルパーオキサイド、ベンゾイルパーオキサイド、m−トルオイルパーオキサイド、t−ブチルパーオキシ−2−エチルヘキサノエート、t−ブチルパーオキシバーバレート、t−ブチルオキシネオデカナート、ジイソプロピルパ−オキシデカーボネート、ジエトキシパーオキシデカーボネート、ビス−(4−t−ブチルサイクロヘキシル)パーオキシデカーボネート、ジメトキシイソプロピルパーオキシデカーボネート、ジサイクロヘキシルパーオキシデカーボネート及び3、3、5−トリメチルヘキサノイルパーオキサイドからなる群から選択される少なくとも1つの過酸化物であることを特徴とする請求項15に記載のリチウムイオン二次電池用電解液。
- リチウムイオンを可逆的に挿入及び脱離することができる正極活物質を含む正極と、
リチウムイオンを可逆的に挿入及び脱離することができる負極活物質を含む負極と、
請求項1〜18のいずれかに記載の電解質と、を含むことを特徴とするリチウムイオン二次電池。 - 前記リチウムイオン二次電池は、リチウムイオンポリマ電池であることを特徴とする請求項19に記載のリチウムイオン二次電池。
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US9252457B2 (en) | 2006-04-27 | 2016-02-02 | Mitsubishi Chemical Corporation | Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery |
US9343777B2 (en) | 2006-04-27 | 2016-05-17 | Mitsubishi Chemical Corporation | Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery |
CN103259044A (zh) * | 2006-04-27 | 2013-08-21 | 三菱化学株式会社 | 非水电解液及非水电解质二次电池 |
US9608291B2 (en) | 2006-04-27 | 2017-03-28 | Mitsubishi Chemical Corporation | Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery |
US20170084955A1 (en) | 2006-04-27 | 2017-03-23 | Mitsubishi Chemical Corporation | Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery |
WO2007126068A1 (ja) * | 2006-04-27 | 2007-11-08 | Mitsubishi Chemical Corporation | 非水系電解液及び非水系電解液二次電池 |
US12100809B2 (en) | 2006-04-27 | 2024-09-24 | Mitsubishi Chemical Corporation | Non-aqueous liquid electrolyte and non-aqueous liquid electrolyte secondary battery |
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US9083058B2 (en) | 2008-02-29 | 2015-07-14 | Mitsubishi Chemical Corporation | Nonaqueous electrolytic solution and nonaqueous-electrolyte battery |
JP2009283463A (ja) * | 2008-05-21 | 2009-12-03 | Samsung Sdi Co Ltd | リチウムイオン二次電池用電解液およびリチウムイオン二次電池 |
US9368834B2 (en) | 2008-05-21 | 2016-06-14 | Samsung Sdi Co., Ltd. | Electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same |
US8771881B2 (en) | 2008-05-21 | 2014-07-08 | Samsung Sdi Co., Ltd. | Electrolyte for lithium ion secondary battery and lithium ion secondary battery comprising the same |
JP2010040525A (ja) * | 2008-08-01 | 2010-02-18 | Samsung Sdi Co Ltd | リチウムイオン二次電池用電解液およびリチウムイオン二次電池 |
JP2012023005A (ja) * | 2010-07-13 | 2012-02-02 | Samsung Sdi Co Ltd | 二次電池 |
JP2014135296A (ja) * | 2014-04-25 | 2014-07-24 | Mitsubishi Chemicals Corp | 非水系電解液及び非水系電解液電池 |
KR20220038079A (ko) | 2019-07-26 | 2022-03-25 | 가부시키가이샤 아데카 | 열폭주 억제제 |
Also Published As
Publication number | Publication date |
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CN100583538C (zh) | 2010-01-20 |
US20050277027A1 (en) | 2005-12-15 |
US7981551B2 (en) | 2011-07-19 |
CN1705157A (zh) | 2005-12-07 |
KR100670448B1 (ko) | 2007-01-16 |
KR20050113990A (ko) | 2005-12-05 |
JP4545036B2 (ja) | 2010-09-15 |
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