JPWO2017119410A1 - リチウム銅系複合酸化物 - Google Patents
リチウム銅系複合酸化物 Download PDFInfo
- Publication number
- JPWO2017119410A1 JPWO2017119410A1 JP2017560381A JP2017560381A JPWO2017119410A1 JP WO2017119410 A1 JPWO2017119410 A1 JP WO2017119410A1 JP 2017560381 A JP2017560381 A JP 2017560381A JP 2017560381 A JP2017560381 A JP 2017560381A JP WO2017119410 A1 JPWO2017119410 A1 JP WO2017119410A1
- Authority
- JP
- Japan
- Prior art keywords
- lithium
- composition formula
- copper
- positive electrode
- ion secondary
- 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
- OPHUWKNKFYBPDR-UHFFFAOYSA-N copper lithium Chemical compound [Li].[Cu] OPHUWKNKFYBPDR-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 102
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 59
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 59
- 239000010949 copper Substances 0.000 claims abstract description 43
- 239000007774 positive electrode material Substances 0.000 claims abstract description 37
- 229910052732 germanium Inorganic materials 0.000 claims abstract description 26
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 229910052744 lithium Inorganic materials 0.000 claims description 51
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 47
- 229910052802 copper Inorganic materials 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
- 229910052760 oxygen Inorganic materials 0.000 claims description 24
- 239000001301 oxygen Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 18
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 18
- 239000010703 silicon Substances 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 abstract description 131
- 239000002994 raw material Substances 0.000 description 40
- 238000005259 measurement Methods 0.000 description 21
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 20
- 238000002156 mixing Methods 0.000 description 19
- -1 cobalt and nickel Chemical class 0.000 description 17
- 239000013078 crystal Substances 0.000 description 17
- 238000002441 X-ray diffraction Methods 0.000 description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 238000010304 firing Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 13
- 239000007773 negative electrode material Substances 0.000 description 12
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 10
- 239000000956 alloy Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000010936 titanium Substances 0.000 description 10
- 239000000470 constituent Substances 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 8
- 238000003701 mechanical milling Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 7
- 229910052759 nickel Inorganic materials 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000006230 acetylene black Substances 0.000 description 6
- 239000012298 atmosphere Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000011572 manganese Substances 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 5
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 5
- 239000002033 PVDF binder Substances 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000003575 carbonaceous material Substances 0.000 description 5
- 238000000634 powder X-ray diffraction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 239000012752 auxiliary agent Substances 0.000 description 4
- 238000000975 co-precipitation Methods 0.000 description 4
- GEZOTWYUIKXWOA-UHFFFAOYSA-L copper;carbonate Chemical compound [Cu+2].[O-]C([O-])=O GEZOTWYUIKXWOA-UHFFFAOYSA-L 0.000 description 4
- AEJIMXVJZFYIHN-UHFFFAOYSA-N copper;dihydrate Chemical compound O.O.[Cu] AEJIMXVJZFYIHN-UHFFFAOYSA-N 0.000 description 4
- QYCVHILLJSYYBD-UHFFFAOYSA-L copper;oxalate Chemical compound [Cu+2].[O-]C(=O)C([O-])=O QYCVHILLJSYYBD-UHFFFAOYSA-L 0.000 description 4
- 239000011888 foil Substances 0.000 description 4
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium dioxide Chemical compound O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 4
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 4
- 238000003823 mortar mixing Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 239000002210 silicon-based material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910052718 tin Inorganic materials 0.000 description 4
- 239000011135 tin Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical class CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 229910000733 Li alloy Inorganic materials 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 3
- XTVVROIMIGLXTD-UHFFFAOYSA-N copper(II) nitrate Chemical compound [Cu+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O XTVVROIMIGLXTD-UHFFFAOYSA-N 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
- 238000003795 desorption Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000001989 lithium alloy Substances 0.000 description 3
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 3
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Chemical compound [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011255 nonaqueous electrolyte Substances 0.000 description 3
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- ZXMGHDIOOHOAAE-UHFFFAOYSA-N 1,1,1-trifluoro-n-(trifluoromethylsulfonyl)methanesulfonamide Chemical compound FC(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)F ZXMGHDIOOHOAAE-UHFFFAOYSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 229910005793 GeO 2 Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 2
- 229910013553 LiNO Inorganic materials 0.000 description 2
- 229910013870 LiPF 6 Inorganic materials 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000002134 carbon nanofiber Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000002482 conductive additive Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- YNQRWVCLAIUHHI-UHFFFAOYSA-L dilithium;oxalate Chemical compound [Li+].[Li+].[O-]C(=O)C([O-])=O YNQRWVCLAIUHHI-UHFFFAOYSA-L 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- 150000002291 germanium compounds Chemical class 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000447 polyanionic polymer Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000005049 silicon tetrachloride Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000003115 supporting electrolyte Substances 0.000 description 2
- 238000001308 synthesis method Methods 0.000 description 2
- LLZRNZOLAXHGLL-UHFFFAOYSA-J titanic acid Chemical compound O[Ti](O)(O)O LLZRNZOLAXHGLL-UHFFFAOYSA-J 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
- 229910052726 zirconium Inorganic materials 0.000 description 2
- DOYSIZKQWJYULQ-UHFFFAOYSA-N 1,1,2,2,2-pentafluoro-n-(1,1,2,2,2-pentafluoroethylsulfonyl)ethanesulfonamide Chemical compound FC(F)(F)C(F)(F)S(=O)(=O)NS(=O)(=O)C(F)(F)C(F)(F)F DOYSIZKQWJYULQ-UHFFFAOYSA-N 0.000 description 1
- LEEANUDEDHYDTG-UHFFFAOYSA-N 1,2-dimethoxypropane Chemical compound COCC(C)OC LEEANUDEDHYDTG-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- AVFZOVWCLRSYKC-UHFFFAOYSA-N 1-methylpyrrolidine Chemical compound CN1CCCC1 AVFZOVWCLRSYKC-UHFFFAOYSA-N 0.000 description 1
- JWUJQDFVADABEY-UHFFFAOYSA-N 2-methyltetrahydrofuran Chemical compound CC1CCCO1 JWUJQDFVADABEY-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910000669 Chrome steel Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910005839 GeS 2 Inorganic materials 0.000 description 1
- 239000007818 Grignard reagent Substances 0.000 description 1
- 229910019211 La0.51Li0.34TiO2.94 Inorganic materials 0.000 description 1
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 238000003991 Rietveld refinement Methods 0.000 description 1
- 229910003691 SiBr Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- DSRXQXXHDIAVJT-UHFFFAOYSA-N acetonitrile;n,n-dimethylformamide Chemical compound CC#N.CN(C)C=O DSRXQXXHDIAVJT-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910021486 amorphous silicon dioxide Inorganic materials 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 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
- 239000006229 carbon black Substances 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 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
- 239000000571 coke Substances 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- LSXDOTMGLUJQCM-UHFFFAOYSA-M copper(i) iodide Chemical compound I[Cu] LSXDOTMGLUJQCM-UHFFFAOYSA-M 0.000 description 1
- OPQARKPSCNTWTJ-UHFFFAOYSA-L copper(ii) acetate Chemical compound [Cu+2].CC([O-])=O.CC([O-])=O OPQARKPSCNTWTJ-UHFFFAOYSA-L 0.000 description 1
- 229960003280 cupric chloride Drugs 0.000 description 1
- VNSVQJIXVXZDJF-UHFFFAOYSA-L dilithium;phthalate Chemical compound [Li+].[Li+].[O-]C(=O)C1=CC=CC=C1C([O-])=O VNSVQJIXVXZDJF-UHFFFAOYSA-L 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- KLKFAASOGCDTDT-UHFFFAOYSA-N ethoxymethoxyethane Chemical compound CCOCOCC KLKFAASOGCDTDT-UHFFFAOYSA-N 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- YIZVROFXIVWAAZ-UHFFFAOYSA-N germanium disulfide Chemical compound S=[Ge]=S YIZVROFXIVWAAZ-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 150000004795 grignard reagents Chemical class 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910021385 hard carbon Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 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
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010416 ion conductor Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 1
- 229940031993 lithium benzoate Drugs 0.000 description 1
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 1
- JILPJDVXYVTZDQ-UHFFFAOYSA-N lithium methoxide Chemical compound [Li+].[O-]C JILPJDVXYVTZDQ-UHFFFAOYSA-N 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 1
- 229910001496 lithium tetrafluoroborate Inorganic materials 0.000 description 1
- PSBOOKLOXQFNPZ-UHFFFAOYSA-M lithium;2-hydroxybenzoate Chemical compound [Li+].OC1=CC=CC=C1C([O-])=O PSBOOKLOXQFNPZ-UHFFFAOYSA-M 0.000 description 1
- LDJNSLOKTFFLSL-UHFFFAOYSA-M lithium;benzoate Chemical compound [Li+].[O-]C(=O)C1=CC=CC=C1 LDJNSLOKTFFLSL-UHFFFAOYSA-M 0.000 description 1
- AZVCGYPLLBEUNV-UHFFFAOYSA-N lithium;ethanolate Chemical compound [Li+].CC[O-] AZVCGYPLLBEUNV-UHFFFAOYSA-N 0.000 description 1
- AXMOZGKEVIBBCF-UHFFFAOYSA-M lithium;propanoate Chemical compound [Li+].CCC([O-])=O AXMOZGKEVIBBCF-UHFFFAOYSA-M 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- AIFMYMZGQVTROK-UHFFFAOYSA-N silicon tetrabromide Chemical compound Br[Si](Br)(Br)Br AIFMYMZGQVTROK-UHFFFAOYSA-N 0.000 description 1
- 229910021384 soft carbon Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 1
- VJHDVMPJLLGYBL-UHFFFAOYSA-N tetrabromogermane Chemical compound Br[Ge](Br)(Br)Br VJHDVMPJLLGYBL-UHFFFAOYSA-N 0.000 description 1
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 description 1
- PPMWWXLUCOODDK-UHFFFAOYSA-N tetrafluorogermane Chemical compound F[Ge](F)(F)F PPMWWXLUCOODDK-UHFFFAOYSA-N 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- CUDGTZJYMWAJFV-UHFFFAOYSA-N tetraiodogermane Chemical compound I[Ge](I)(I)I CUDGTZJYMWAJFV-UHFFFAOYSA-N 0.000 description 1
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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- C01B33/32—Alkali metal silicates
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- H01M4/485—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
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Abstract
組成式(1):
LimCuyX1On
[組成式(1)中、X1は、Si又はGeを示す。yは、0.8〜1.2を示す。mは、1.5〜2.5を示す。nは、3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物。
Description
項1.
組成式(1):
LimCuyX1On
[組成式(1)中、X1はSi又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物。
項2.
単斜晶構造を有する、上記項1に記載のリチウム銅系複合酸化物。
項3.
平均粒子径が0.1〜100μmである、上記項1又は2に記載のリチウム銅系複合酸化物。
項4.
リチウムと、銅と、ケイ素又はゲルマニウムと、酸素とを含む混合物を加熱する工程を含む、上記項1〜3のいずれかに記載のリチウム銅系複合酸化物の製造方法。
項5.
加熱温度が600℃以上である、上記項4に記載の方法。
項6.
組成式(2):
LimCuyX2On
[組成式(2)中、X2はSi、Ti又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物を含む、リチウムイオン二次電池用正極活物質。
項7.
上記項6に記載のリチウムイオン二次電池用正極活物質を含む、リチウムイオン二次電池用正極。
項8.
さらに、導電助剤を含む、上記項7に記載のリチウムイオン二次電池用正極。
項9.
上記項7又は8に記載のリチウムイオン二次電池用正極を含む、リチウムイオン二次電池。
本発明のリチウム銅系複合酸化物は、組成式(1):
LimCuyX1On
[組成式(1)中、X1はSi又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表される化合物である。なお、以下において、当該化合物を「組成式(1)で表される化合物」と記載する場合がある。
上記組成式(1)で表される化合物の製造方法において、リチウムと、銅と、ケイ素又はゲルマニウムと、酸素とを含む混合物を得るための原料化合物としては、最終的に混合物中にリチウムと、銅と、ケイ素又はゲルマニウムと、酸素とが所定の比率で含まれていればよく、例えば、リチウム含有化合物、銅含有化合物、ケイ素含有化合物又はゲルマニウム含有化合物、酸素含有化合物等を用いることができる。
上記組成式(1)で表される化合物は、上記した組成及び結晶構造を有しているため、リチウムイオンを挿入及び脱離できることから、リチウムイオン二次電池用正極活物質として用いることができる。従って、本発明は、上記組成式(1)で表される化合物を含むリチウムイオン二次電池用正極活物質を包含する。
LimCuyX2On
[組成式(2)中、X2はSi、Ti又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物も、リチウムイオンを挿入及び脱離できることから、リチウムイオン二次電池用正極活物質として用いることができる。なお、以下において、上記組成式(2)で表されるリチウム銅系複合酸化物を「上記組成式(2)で表される化合物」と記載する場合がある。従って、本発明は、上記組成式(2)で表される化合物を含むリチウムイオン二次電池用正極活物質を包含する。
本発明のリチウムイオン二次電池用正極質及びリチウムイオン二次電池は、上記した組成式(1)で表される化合物又は組成式(2)で表される化合物を正極活物質として使用すること以外は、基本的な構造は、公知の非水電解液(非水系)リチウムイオン二次電池用正極及び非水電解液(非水系)リチウムイオン二次電池と同様の構成を採用することができる。例えば、正極、負極、及びセパレータを、当該正極及び負極がセパレータによって互いに隔離されるように電池容器内に配置することができる。その後、非水電解液を当該電池容器内に充填した後、当該電池容器を密封することなどによって本発明のリチウムイオン二次電池を製造することができる。なお、本発明のリチウムイオン二次電池は、リチウム二次電池であってもよい。本明細書において、「リチウムイオン二次電池」は、リチウムイオンをキャリアイオンとする二次電池を意味し、「リチウム二次電池」は、負極活物質としてリチウム金属又はリチウム合金を使用する二次電池を意味する。
に成形して得ることができる。
原料粉体として、Li2CO3(レアメタリック社製;99.9%(3N))、CuO(高純度化学研究所社製;99.99%(4N))、及び沈降性非晶質SiO2(関東化学社製;3N)を用いた。Li2CO3、CuO、及びSiO2をリチウム:銅:ケイ素(モル比)が2:1:1となるように秤量し、ジルコニアボール(15mmΦ×10個)と共にクロム鋼製容器に入れ、アセトンを加えて遊星ボールミル(Fritsch社製、商品名:P−6)にて、400rpmで24時間粉砕混合した。その後、減圧下でアセトンを除去した後、回収した粉末を手押しでペレット成型し、アルゴン気流下にて600℃、700℃、800℃、900℃、又は1000℃で1時間焼成した。このとき、昇温速度を400℃/hとした。また、冷却速度は300℃まで100℃/hとし、以降は自然冷却により室温まで放冷した。得られた各生成物(Li2CuSiO4)を粉末X線回折(XRD)により確認した。結果を図1に示す。
原料粉体として、Li2CO3(レアメタリック社製;99.9%(3N))、CuO(高純度化学研究所社製;99.99%(4N))、及びGeO2(関東化学社製;99.99%(4N))を用いた。Li2CO3、CuO、及びGeO2をリチウム:銅:ゲルマニウム(モル比)が2:1:1となるように秤量し、ジルコニアボール(15mmΦ×10個)と共にクロム鋼製容器に入れ、アセトンを加えて遊星ボールミル(Fritsch社製、商品名:P−6)にて、400rpmで24時間粉砕混合した。その後、減圧下でアセトンを除去した後、回収した粉末を手押しでペレット成型し、アルゴン気流下にて700℃、800℃、又は900℃で1時間焼成した。このとき、昇温速度を400℃/hとした。また、冷却速度は300℃まで100℃/hとし、以降は自然冷却により室温まで放冷した。得られた各生成物(Li2CuGeO4)を実施例1と同様にして粉末X線回折(XRD)により確認した。結果を図4に示す。
充放電測定を行うために、上記実施例1において焼成温度900℃の場合に得られたLi2CuSiO4、ポリフッ化ビニリデン(PVDF)、及びアセチレンブラック(AB)が体積比85:7.5:7.5となるようにめのう乳鉢で混合し、得られたスラリーを正極集電体であるアルミニウム箔(厚さ20μm)上に塗布し、これを直径8mmの円形に打ち抜き、正極とした。また、試料が正極集電体から剥がれないようにするため、30〜40mPaで圧着した。
充放電測定を行うために、上記実施例2において焼成温度900℃の場合に得られたLi2CuGeO4、ポリフッ化ビニリデン(PVDF)、及びアセチレンブラック(AB)が体積比85:7.5:7.5となるようにめのう乳鉢で混合し、得られたスラリーを正極集電体であるアルミニウム箔(厚さ20μm)上に塗布し、これを直径8mmの円形に打ち抜き、正極とした。また、試料が正極集電体から剥がれないようにするため、30〜40mPaで圧着した。
2 負極端子
3 負極
4 電解液が含浸されたセパレータ
5 絶縁パッキング
6 正極
7 正極缶
Claims (9)
- 組成式(1):
LimCuyX1On
[組成式(1)中、X1はSi又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物。 - 単斜晶構造を有する、請求項1に記載のリチウム銅系複合酸化物。
- 平均粒子径が0.1〜100μmである、請求項1又は2に記載のリチウム銅系複合酸化物。
- リチウムと、銅と、ケイ素又はゲルマニウムと、酸素とを含む混合物を加熱する工程を含む、請求項1〜3のいずれかに記載のリチウム銅系複合酸化物の製造方法。
- 加熱温度が600℃以上である、請求項4に記載の方法。
- 組成式(2):
LimCuyX2On
[組成式(2)中、X2はSi、Ti又はGeを示す。yは0.8〜1.2を示す。mは1.5〜2.5を示す。nは3.9〜4.1を示す。]
で表されるリチウム銅系複合酸化物を含む、リチウムイオン二次電池用正極活物質。 - 請求項6に記載のリチウムイオン二次電池用正極活物質を含む、リチウムイオン二次電池用正極。
- さらに、導電助剤を含む、請求項7に記載のリチウムイオン二次電池用正極。
- 請求項7又は8に記載のリチウムイオン二次電池用正極を含む、リチウムイオン二次電池。
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01226729A (ja) * | 1988-03-08 | 1989-09-11 | Kubota Ltd | 酸化物系超電導材料 |
JPH09147861A (ja) * | 1995-11-22 | 1997-06-06 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2008293661A (ja) * | 2007-05-22 | 2008-12-04 | Nec Tokin Corp | リチウム二次電池用正極及びそれを用いたリチウム二次電池 |
JP2010257592A (ja) * | 2009-04-21 | 2010-11-11 | Nec Energy Devices Ltd | リチウムイオン二次電池 |
CN105457645A (zh) * | 2015-12-20 | 2016-04-06 | 桂林理工大学 | 可见光响应的光催化剂Li2CuGeO4及其制备方法 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01226729A (ja) * | 1988-03-08 | 1989-09-11 | Kubota Ltd | 酸化物系超電導材料 |
JPH09147861A (ja) * | 1995-11-22 | 1997-06-06 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2008293661A (ja) * | 2007-05-22 | 2008-12-04 | Nec Tokin Corp | リチウム二次電池用正極及びそれを用いたリチウム二次電池 |
JP2010257592A (ja) * | 2009-04-21 | 2010-11-11 | Nec Energy Devices Ltd | リチウムイオン二次電池 |
CN105457645A (zh) * | 2015-12-20 | 2016-04-06 | 桂林理工大学 | 可见光响应的光催化剂Li2CuGeO4及其制备方法 |
Non-Patent Citations (1)
Title |
---|
青野 慎太郎 SHINTARA AONO SHINTARA AONO: "Li2MnSiO4/カーボンナノ複合体の新規合成と充放電特性 A Novel Synthesis and Charge-disch", 電池討論会講演要旨集, JPN6020048117, ISSN: 0004406638 * |
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