WO2005007577A1 - リチウム−ニッケル−マンガン複合酸化物及びその製造方法並びにその用途 - Google Patents
リチウム−ニッケル−マンガン複合酸化物及びその製造方法並びにその用途 Download PDFInfo
- Publication number
- WO2005007577A1 WO2005007577A1 PCT/JP2004/010238 JP2004010238W WO2005007577A1 WO 2005007577 A1 WO2005007577 A1 WO 2005007577A1 JP 2004010238 W JP2004010238 W JP 2004010238W WO 2005007577 A1 WO2005007577 A1 WO 2005007577A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lithium
- nickel
- composite oxide
- manganese
- manganese composite
- Prior art date
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 83
- ZYXUQEDFWHDILZ-UHFFFAOYSA-N [Ni].[Mn].[Li] Chemical compound [Ni].[Mn].[Li] ZYXUQEDFWHDILZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 53
- 239000000203 mixture Substances 0.000 claims abstract description 60
- 239000013078 crystal Substances 0.000 claims abstract description 24
- 239000007774 positive electrode material Substances 0.000 claims abstract description 17
- 238000000634 powder X-ray diffraction Methods 0.000 claims abstract description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 9
- 239000011572 manganese Substances 0.000 claims description 81
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 72
- 229910052744 lithium Inorganic materials 0.000 claims description 47
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 45
- 229910052759 nickel Inorganic materials 0.000 claims description 23
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 21
- 229910052748 manganese Inorganic materials 0.000 claims description 21
- 238000004458 analytical method Methods 0.000 claims description 19
- 150000002642 lithium compounds Chemical class 0.000 claims description 19
- ZAUUZASCMSWKGX-UHFFFAOYSA-N manganese nickel Chemical compound [Mn].[Ni] ZAUUZASCMSWKGX-UHFFFAOYSA-N 0.000 claims description 19
- 238000002156 mixing Methods 0.000 claims description 19
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 17
- 239000012298 atmosphere Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 239000007864 aqueous solution Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical group O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims description 12
- 235000006748 manganese carbonate Nutrition 0.000 claims description 10
- XMWCXZJXESXBBY-UHFFFAOYSA-L manganese(ii) carbonate Chemical compound [Mn+2].[O-]C([O-])=O XMWCXZJXESXBBY-UHFFFAOYSA-L 0.000 claims description 10
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910000008 nickel(II) carbonate Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000001694 spray drying Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- 150000002696 manganese Chemical class 0.000 claims description 6
- 239000011656 manganese carbonate Substances 0.000 claims description 6
- 229940093474 manganese carbonate Drugs 0.000 claims description 6
- 229910000016 manganese(II) carbonate Inorganic materials 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 claims description 4
- 229910052808 lithium carbonate Inorganic materials 0.000 claims description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 claims description 4
- 150000002815 nickel Chemical class 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000011593 sulfur Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- ISSGCAMUHKKFRI-UHFFFAOYSA-N [Mn].[Li].[Mn] Chemical compound [Mn].[Li].[Mn] ISSGCAMUHKKFRI-UHFFFAOYSA-N 0.000 claims 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 claims 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims 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 claims 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 238000002441 X-ray diffraction Methods 0.000 description 42
- 238000012360 testing method Methods 0.000 description 24
- 230000014759 maintenance of location Effects 0.000 description 18
- 239000000843 powder Substances 0.000 description 17
- BLYYANNQIHKJMU-UHFFFAOYSA-N manganese(2+) nickel(2+) oxygen(2-) Chemical compound [O--].[O--].[Mn++].[Ni++] BLYYANNQIHKJMU-UHFFFAOYSA-N 0.000 description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 description 11
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 description 11
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 description 11
- 239000004570 mortar (masonry) Substances 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 239000010406 cathode material Substances 0.000 description 10
- 239000002002 slurry Substances 0.000 description 10
- 229910052723 transition metal Inorganic materials 0.000 description 10
- 238000010304 firing Methods 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- 150000003624 transition metals Chemical class 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 7
- 238000000975 co-precipitation Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 238000007600 charging Methods 0.000 description 5
- 239000013256 coordination polymer Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000012467 final product Substances 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229940099596 manganese sulfate Drugs 0.000 description 4
- 235000007079 manganese sulphate Nutrition 0.000 description 4
- 239000011702 manganese sulphate Substances 0.000 description 4
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 4
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 4
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 4
- -1 polytetrafluoroethylene Polymers 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 238000003991 Rietveld refinement Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000009776 industrial production Methods 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 229910017488 Cu K Inorganic materials 0.000 description 2
- 229910017541 Cu-K Inorganic materials 0.000 description 2
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 238000011437 continuous method Methods 0.000 description 2
- 238000007580 dry-mixing Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- IPJKJLXEVHOKSE-UHFFFAOYSA-L manganese dihydroxide Chemical compound [OH-].[OH-].[Mn+2] IPJKJLXEVHOKSE-UHFFFAOYSA-L 0.000 description 2
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(2+);dinitrate Chemical compound [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- ZULUUIKRFGGGTL-UHFFFAOYSA-L nickel(ii) carbonate Chemical compound [Ni+2].[O-]C([O-])=O ZULUUIKRFGGGTL-UHFFFAOYSA-L 0.000 description 2
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 230000005070 ripening Effects 0.000 description 2
- 239000011163 secondary particle Substances 0.000 description 2
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 229910006465 Li—Ni—Mn Inorganic materials 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 229910018663 Mn O Inorganic materials 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 229910021260 NaFe Inorganic materials 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- 102100021227 TGF-beta-activated kinase 1 and MAP3K7-binding protein 2 Human genes 0.000 description 1
- 101710178681 TGF-beta-activated kinase 1 and MAP3K7-binding protein 2 Proteins 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 241001135893 Themira Species 0.000 description 1
- HNWGSFPWLVBXFE-UHFFFAOYSA-N [Mn].[Ni].[Na].[Li] Chemical compound [Mn].[Ni].[Na].[Li] HNWGSFPWLVBXFE-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000032683 aging Effects 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002050 diffraction method Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 235000002867 manganese chloride Nutrition 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- 229940099607 manganese chloride Drugs 0.000 description 1
- FWHZQBMZKQZFJG-UHFFFAOYSA-N manganese hydrochloride Chemical compound Cl.[Mn] FWHZQBMZKQZFJG-UHFFFAOYSA-N 0.000 description 1
- 239000002931 mesocarbon microbead Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L nickel(ii) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 1
- XATZQMXOIQGKKV-UHFFFAOYSA-N nickel;hydrochloride Chemical compound Cl.[Ni] XATZQMXOIQGKKV-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000012925 reference material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
- 239000002023 wood Substances 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/12—Manganates manganites or permanganates
- C01G45/1221—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof
- C01G45/1228—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [MnO2]n-, e.g. LiMnO2, Li[MxMn1-x]O2
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/40—Nickelates
- C01G53/42—Nickelates containing alkali metals, e.g. LiNiO2
- C01G53/44—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese
- C01G53/50—Nickelates containing alkali metals, e.g. LiNiO2 containing manganese of the type [MnO2]n-, e.g. Li(NixMn1-x)O2, Li(MyNixMn1-x-y)O2
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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Definitions
- the present invention relates to a lithium-nickel-manganese composite oxide used for a positive electrode material of a secondary battery, a method for producing the same, and a lithium-ion secondary battery using the same.
- Non-Patent Document 2 Non-Patent Document 2 XRD pattern (R iet V e 1 d) analysis results ( Non-Patent Document 2), these structural irregularities affect the output characteristics, etc. It was thought to be reverberating.
- Patent Document 1 The L i N i 0. 5 Mn 0 . 5 0 2 manufacturing method, a method using a nickel manganous composite hydroxide and lithium compound is disclosed (Patent Document 1).
- Patent Document 1 a method using a nickel manganous composite hydroxide and lithium compound is disclosed.
- manganese hydroxide is unstable, so impurities are easily generated, and industrial production is difficult.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-0428 13
- Patent Document 3 Japanese Patent Application Laid-Open No. H11-307094
- Patent Document 4 Japanese Patent Application Laid-Open No. 2002-313338
- Non-patent Document 1 Kotsuki et al. Proceedings of the 41st Battery Symposium (2000) 460— 46
- Non-Patent Document 2 Nakano et al. Journ aloftheCeramicSoccietyoffJana1 1 1 1 [1] 33--36 (2003)
- Non-Patent Document 3 J. Elec t r o c he em. S o c., V o 1.141, p. 2010 (1994)
- Non-Patent Document 4 E. Rossen et al. Solid StateIonics 5 7 (1 992) 3 1 1-3 18
- the present invention provides a positive electrode active material for a lithium ion secondary battery having high discharge capacity, excellent rate characteristics and cycle characteristics, and sufficient crystallinity, a method for producing the same, and a positive electrode thereof.
- An object of the present invention is to provide a lithium secondary battery using an active material.
- FIG. 1 is an X-ray diffraction diagram of the lithium nickel-manganese composite oxide obtained in Examples 4 to 8 and Comparative Example 4,
- FIG. 2 is a DSC diagram of the lithium-nickel-manganese composite oxide (Example 9).
- FIG. 3 is an X-ray diffraction diagram of the lithium-nickel-manganese composite oxide obtained in Examples 10 to 14,
- Lithium present invention - nickel - manganese composite oxide, when the composition is represented by L i X N i y Mn z0 2, x is 1 + 1/9 soil (1 + 1 Bruno 9) 1 0, y force S4Z9 soil (4/9) / 10, z is 4 no 9 soil (4/9) Z10, preferably, x is 1 + 1/9 ⁇ (1 + 1/9) / 20, y is 4/9 9 soil (4/9) / 20, z is 4 Z 9 soil (4/9) / 20.
- the Li of the 2b site, the Ni of the 4g site, the Ni of the 4g site, and the Mn of the 8i site are regularly arranged as a transition metal layer, and the development of the layer structure and the crystallinity are maximized.
- the composition range is X 1 + 1/9 Sat (1 + 1/9), 10, y is 4 Z 9 Sat (4/9) / 10 and z is 4/9 (4/9) / 10 Otherwise, solid solution of the transition metal layer and Cationmixing between the lithium layer and the transition metal layer occur, and the rate characteristics and ⁇ , Cycle characteristics deteriorate.
- Lithium nickel manganous composite oxide of the present invention is in the composition range of the more general formula L i [N i 0, 5-0 5X ⁇ - n 0. 5- 0. 5X L i x.].
- L i preferably 0.03 ⁇ X ⁇ 0.15, and more preferably 0.055 ⁇ X ⁇ 0.11.
- the lithium-nickel-manganese composite oxide of the present invention has a layered rock salt structure, and has a (002) plane and a Miller index h k 1 when assigned as a monoclinic crystal.
- (1 3 3) plane of Cu- ⁇ ; peak intensities of the lines X-ray powder diffractometry using a ratio I (. 02) / 1 ( 13 - 3) is 1.3 5 or more 1.9 5 or less, in particular It is preferably from 1.50 to 1.95.
- the (002) plane and (13-3) plane at Miller index hk 1 when assigned as monoclinic are the (003) plane at Miller index hk 1 at the X-ray diffraction peak position when assigned as hexagonal.
- (002) / I (1 3 - 3) ratio is substantially the crystal system Cu- ⁇ : peak intensity ratio I when it is assumed that hexagonal powder X-ray diffraction using the line (. 0 3) / I (1. 4) refers to the same one.
- the peak intensity ratio is an index of cation mixing (Catio 1 mixing).
- Catio 1 mixing When the intensity ratio is high, the layer structure is developed, and the crystal perfection is high.
- C is low. It is thought that there is disorder of the layer structure due to ationmixing ⁇ Oh zuku et al. J. Elecroch em. Soc., vol. 140, No. 7, p. 186 2—1870 (1 993) ⁇ .
- X is less than 0.03, the peak intensity ratio tends to decrease.
- the lithium-nickel-manganese composite oxide of the present invention has a lithium main layer in a Rietvelt (Riet Ve 1 d) analysis in the space group C 12 / m 1, that is, a lithium site at the 2 c site.
- the occupancy is 93.5% or more
- the lithium seat occupancy at the 4h site is 93.5% or more.
- X increases As the size increases, the occupancy of lithium at the 2c, 4h site (lithium-based layer) tends to increase, and the output characteristics and charge / discharge cycle characteristics improve.
- the lithium-nickel-manganese composite oxide of the present invention is a lithium-nickel-manganese composite oxide in which the ideal layer structure of C 12 / ml is developed, in which the layer structure in the crystal is monoclinic. Yes, Li at 2c site, Ni at 4i site, Ni at 4g site, and Mn at 8i site are regularly arranged as transition metal layers, with the maximum layer structure development and crystallinity .
- the lattice constant can be measured by powder X-ray diffraction.
- the atomic fraction coordinates in the crystal lattice are shown in Table 1 and / or Table 2, and the range of each coordinate value is preferably within 10% of soil. Is preferably within ⁇ 5% of the coordinate value of.
- the lithium-nickel-manganese composite oxide may be an aggregate of single crystals having fraction coordinates in Tables 1 and 2 or Table 2, or may be a mixed crystal in which each is composited.
- the layer structure in the crystal develops, the solid solution of the transition metal layer and the cation mixing in the lithium layer-transition metal layer are suppressed, and the rate characteristics and Cycle characteristics are improved.
- Atomic fraction coordinates are measured by powder X-ray diffraction by Rietveld method or Laver method. Can be analyzed and identified. Table 1 Atomic fraction coordinates
- the lithium-nickel-manganese composite oxide of the present invention preferably has a sulfur element content of 150 ppm or less.
- a sulfur component such as sulfate
- the cycle characteristics of the secondary battery using carbon as the negative electrode are remarkable. May drop.
- the lithium-nickel-manganese composite oxide of the present invention As one of the methods for producing the lithium-nickel-manganese composite oxide of the present invention, various methods such as a neutralization coprecipitation method, a powder mixing method, and a solid-liquid mixing method are possible.
- a neutralization coprecipitation method As the nickel-manganese compound, a ilmenite-type nickel-manganese composite oxide is particularly desirable because of its high reactivity with a lithium compound.
- the ilmenite type nickel-manganese composite oxide calcines nickel-manganese coprecipitates such as nickel-manganese composite hydroxide, nickel-manganese composite carbonate, and nickel-manganese composite oxalate obtained by coprecipitation operation. It can be obtained by At that time, the nickel-manganese coprecipitate is more preferably a uniform crystal phase in which nickel and manganese are dissolved.
- Hydroxides, acetates, carbonates, oxalates, nitrates, chlorides, sulfates, etc. can be used as the lithium compound used as the raw material, but the decomposition temperature is low and hydroxylation that does not generate corrosive gas is possible. It is preferable to use a substance or a carbonate.
- a dry mixing method is used, or a lithium salt is dispersed or dissolved in water or alcohol to form a nickel-manganese composite oxide. It is also effective to use a wet slurry which is dried and fired after impregnation. The slurry may be sprayed and dried.
- the firing atmosphere must be an aerobic atmosphere. Firing in an oxygen-free atmosphere such as nitrogen or argon causes reduction of oxides, so the desired compound cannot be obtained.
- an oxygen-free atmosphere such as nitrogen or argon causes reduction of oxides, so the desired compound cannot be obtained.
- the term "aerobic atmosphere” as used herein refers to an atmosphere having a higher oxygen partial pressure than air, such as air or pure oxygen.
- the firing temperature in a temperature range of not less than 75 ° C. and not more than 1200 ° C. If the firing temperature is lower than 75 ° C, crystallization is not sufficient. Structural irregularities become apparent and battery capacity decreases. More preferably, by firing in the range of 900 to 100 ° C., excellent electrochemical properties can be obtained.
- the mixing ratio between the nickel-manganese compound and the lithium compound it is preferable to mix the lithium compound in excess of the target composition because lithium evaporates during firing.
- Lithium transpiration tends to become more pronounced as the X value increases, and a compound having a desired chemical composition can be obtained by appropriately adjusting the mixing ratio according to the composition. It is preferable that the ilmenite-structured nickel-manganese composite oxide and the lithium compound are mixed and fired so that the atomic ratio of Li / (Ni + Mn) becomes 1.1 or more and 1.3 or less.
- the lithium nickel-manganese composite oxide of the present invention can also be produced by the following method.
- a nickel carbonate and manganese salt mixed aqueous solution is mixed with a carbonate aqueous solution to produce nickel and manganese carbonate.
- nickel salt nickel sulfate, nickel nitrate, nickel hydrochloride and the like can be used. Among them, nickel sulfate has no oxidizing or reducing properties and can be suitably used.
- manganese salt manganese sulfate, manganese nitrate, manganese hydrochloride and the like can be used. Among them, manganese sulfate has no oxidizing or reducing properties and can be suitably used.
- Carbonate is used as a coprecipitant.
- As the carbonate sodium hydrogen carbonate, sodium carbonate or a mixture thereof is preferable.
- the use amount of the coprecipitant is preferably from 1.0 to 1.5 equivalents, more preferably from 1.05 to 1.1 equivalents.
- the operation method of the coprecipitation step is not particularly limited, and may be a batch method or a continuous method.
- a specific example of a preferred batch system is a method in which an aqueous carbonate solution is supplied to a mixed aqueous solution of a nickel salt and a manganese salt while stirring, and after the supply is completed, a ripening operation of the carbonate of nickel and manganese is performed with stirring.
- a specific example of a preferable continuous method is a method in which an aqueous mixed nickel and manganese salt solution and an aqueous carbonate solution are supplied to a reaction vessel with stirring, and the generated nickel and manganese carbonates are continuously extracted. .
- the operation pH range of the coprecipitation step is preferably 7 to 10, and more preferably 8 to 9. If the pH is 7 or less, nickel carbonate and manganese carbonate dissolve, which is not preferable. On the other hand, when the pH is 10 or more, nickel hydroxide and manganese hydroxide are precipitated, and the precipitates are easily oxidized, which is not preferable.
- the operating temperature range is preferably maintained in the range of 20 to 100 ° C, more preferably 40 to 60 ° C.
- the temperature is lower than 20 ° C, the crystal growth of the carbonate deteriorates, and it becomes difficult to obtain a carbonate of nickel and manganese having a uniform crystal phase. If the temperature exceeds 100 ° C, the aqueous solution will boil, making the coprecipitation operation difficult.
- the washing operation method is not particularly limited, and may be any of a batch type and a continuous type, and examples thereof include a continuous operation of filtration and washing by a belt filter, and a batch operation such as filter-press filtration and repulp washing.
- a carbonate of nickel and manganese and a lithium compound are dispersed in water to form a slurry, which is wet-pulverized and mixed.
- the lithium compound include water-soluble lithium hydroxide or lithium nitrate, and lithium carbonate insoluble in water.
- lithium carbonate is weakly alkaline, and can be suitably used without oxidizing carbonates of nickel and manganese.
- the average particle diameter of the lithium compound, nickel and manganese carbonate after pulverization is preferably 1 ⁇ or less, more preferably 0.3 to 0.7 ⁇ .
- Pulverizing and mixing equipment includes a pole mill, vibrating mill, and wet media stirring A formula mill or the like can be used.
- the slurry obtained by wet pulverization and mixing by spray drying may be granulated.
- Spray drying can be performed with a conventional spray drier that sprays the slurry with a rotating disk or fluid nozzle and dries the droplets with hot air.
- a granulation method a method other than mist drying, such as a submerged granulation method and a tumbling granulation method, can be applied, but spray drying is most industrially advantageous.
- the average diameter of the granulated product is 5 to 30 ⁇ , more preferably 10 to 20 ⁇ um.
- the granulated product is calcined in an aerobic atmosphere at a temperature of 700 ° C. or more to obtain the lithium-nickel-manganese composite oxide of the present invention.
- the preferred firing range is from 750 ° C to 1200 ° C, more preferably from 750 ° C to 100 ° C, and even more preferably from 850 ° C to 950 ° C. is there.
- An oxygen atmosphere is indispensable for the firing atmosphere. If fired in an oxygen-free atmosphere such as nitrogen or argon, reduction occurs and the target product cannot be obtained.
- the oxygen atmosphere refers to an atmosphere having a higher oxygen partial pressure than air.
- the lithium manganese composite oxide powder of the present invention can be suitably used as a positive electrode active material of a lithium ion secondary battery.
- the produced lithium manganese composite oxide is subjected to timely crushing and classification.
- the lithium-nickel-manganese composite oxide of the present invention preferably has a BET specific surface area of 2.0 m 2 / g or less.
- the BET specific surface area is secondary to the positive electrode active material. When considering the amount of charge in the battery, the lower the better. If the composite oxide has a BET specific surface area of more than 2.0 m 2 / g, the battery capacity tends to be low. Accordingly, the BET specific surface area of the composite oxide preferably satisfies 2.0 m 2 / g or less, and more preferably satisfies the range of 1.0 Om 2 / g or more and 1.5 m 2 Zg or less. . Examples>
- Lithium-nickel-manganese composite oxide is used as the cathode material of the battery, and a mixture of polytetrafluoroethylene and acetylene black as conductive agents (trade name: TAB-2) is mixed at a weight ratio of 2: 1. After being formed into a pellet on a mesh (manufactured by SUS316) at a pressure of 1 to nZcm 2 , it was dried under reduced pressure at 150 ° C to produce a positive electrode for a battery.
- the obtained positive electrode for a battery, a negative electrode composed of a metallic lithium foil (0.2 mm thick), and a mixed solvent of propylene carbonate and getyl carbonate were mixed with lithium hexafluorophosphate by lmo 1 Z dm 3
- a battery was constructed using an electrolytic solution dissolved at a concentration of 1%.
- the battery thus prepared was charged and discharged at a constant current and a battery voltage of 4.3 V to 2.5 V at 23 ° C.
- Charging was conducted at 0. 4 mA 'cm- 2, discharge was performed two ways in current density 0. 4mA ⁇ cm- 2 and 2. 5 m A ⁇ cm- 2 of constant current. It represents the high-rate discharge ratio in discharge capacity ratio (2.
- Table 3 shows the atomic fraction coordinates as a result of Rietveld analysis. This is then used as the amount of cathode material for the battery, mixed with a conductive agent Z binder (acetylene black / Teflon-based resin) to form a positive electrode active material, dissolves metallic lithium as a negative electrode active material, and LiPF 6 as an electrolyte.
- a coin cell type battery was prepared using the ethylene carbonate Z dimethyl carbonate solution. Using this battery, the battery was charged and discharged at 23 ° C with a constant current and a battery voltage of 4.3 V to 2.5 V.
- the X-ray diffraction pattern of the product was that of a crystal system of C12Zm1.
- the initial discharge capacity was 145 mAhZg, the high rate discharge rate ratio was 90.7%, and the cycle maintenance rate was 99.95%.
- the final product is L ⁇ 1 + 1 9 _ (1 + 1/9) / 20 N 1 4/9 + (4/9) / 20 M n 4/9 + (4 /
- the X-ray diffraction pattern of the product had a crystal system of C12Zm1.
- the X-ray diffraction pattern of the product was that of a crystal system of R-3m.
- the initial discharge capacity was 150 mAhZg, and the high-rate discharge rate ratio was 84.7% s.
- the cycle maintenance rate was 99.89%. Comparative Example 2
- the composition of the final product is Li 1 + 1/9 + (1 + 1/9) / 8 N 1 4/9
- the X-ray diffraction pattern of the product was that of a crystal system of R-3 m.
- compositions, the lattice constants of C 12 Zm, the crystal systems, and the discharge characteristics of Examples 1 to 3 and Comparative Examples 1 to 3 are shown in Table 4 below.
- Example 2 0.166 C12 / ral 145.0 90.7 99.95
- Example 3 Ll [i 0 .467 Li 0 .. 56 Mn 0.467].
- 2 0.056 C12 / ml 148.0 89.2 99.92 Comparative Example 1 Li [Ni. 5 . Mn. 5 . ] 0 2 0.00 R-3m 150.0 84.7 99.89
- Comparative Example 2 Li [Ni 0. 499 Li 0. 25 Mn 9] 0 ⁇ 2 0.25 R-3m 139.0 83.5 99.85 Comparative Example 3 Li [Ni 0. 53 Li . 33 Mn. . 53 ] 0 2 0.33 R-3m 138.0 85.5 99.88
- the ilmenite structure type nickel monomanganese oxide obtained by the following method was used as a raw material.
- the nickel-manganese oxide of the ilmenite structure and lithium hydroxide monohydrate were mixed in an automatic mortar for one hour so that the atomic ratio of Li / (Ni + Mn) became 1.19.
- the obtained mixture was calcined in an air stream at 900 ° C. for 20 hours to obtain a lithium nickel-manganese composite oxide.
- L i [N i o. 46 Mn. 46 L i 0 .. 8 ] 0 2 (X 0.08).
- X-ray diffraction pattern is as shown in Fig. 1, showing one N a F e 0 2 type layered rock salt structure.
- the X-ray powder pattern was obtained by the WPPD method developed by Toraya et al. (H. Toraya et al., J. Ap p 1. Cryst. 19, 440 (1 986)).
- the pattern fitting was performed with ml (No. 12).
- the a-axis length is 4.987 angstroms
- the b-axis length is 8.602
- the c-axis length is 5.031 angstroms
- ] 3 10 9.41 ⁇ 10 94.
- the specific surface area was 1.6 m 2 g ⁇ 1 .
- the X-ray powder pattern was obtained by the WPPD method developed by Toraya et al. (H. Toraya et al., J. Ap 1.Cryst. 19, 440 (1 986)), and the C12Zml (No. 12) Pattern fitting was performed.
- the a-axis length is 4.980 angstroms
- the b-axis length is 8.593
- the c-axis length is 5.025 angstroms
- ] 3 109.41 ⁇ 10.94 ° Met.
- the specific surface area was 1. lm 2 g _1 .
- Example 7 when this was used as a positive electrode material of a battery and subjected to an output characteristic test in the same manner as in Example 1, the initial discharge capacity (0.4 mA 'cm- 2 ) 145. ImAh / g, high-rate discharge ratio 95.0% Met. A charge / discharge cycle test showed that the capacity retention was 99.99%.
- Example 7
- Example 8 when this was used as a cathode material for a battery and subjected to an output characteristic test in the same manner as in Example 1, the initial discharge capacity (0.4 mA'cm- 2 ) was 143.6 mAh / g, and the high-rate discharge ratio was 94.9. %Met. In addition, as a result of a charge / discharge cycle test, the capacity retention was 99.96 ° /. Met.
- Example 8
- the ilmenite type nickel-manganese oxide and lithium hydroxide monohydrate are mixed in an automatic mortar for 1 hour so that the atomic ratio of Li / (Ni + Mn) becomes 1.12. It was.
- the obtained mixture was calcined at 800 ° C. for 40 hours in an air stream to obtain a lithium-nickel-manganese composite oxide.
- X-ray diffraction pattern, at shown to street 1 showed ⁇ - N a F e 0 2 type layered rock salt structure.
- the powder X-ray pattern was analyzed by the WPPD method developed by Toraya et al. (H. Toraya et al. J. Ap p 1. Cryst. 19, 440 (1986)) to obtain a monoclinic system (DC 1
- OmS g- 1. Was.
- the ilmenite-type nickel-manganese oxide and lithium hydroxide monohydrate were mixed in an automatic mortar for 1 hour so that the atomic ratio Li / (Ni + Mn) became 1.02.
- the obtained mixture was calcined at 900 ° C. for 20 hours in an air stream to obtain a lithium-nickel-manganese composite oxide.
- L i!. . N i o. 5 Mn. 50 2 (X 0.0.00).
- X-ray diffraction pattern showed an N a F e O 2 type layered rock salt structure fire as shown in FIG.
- Hexagonal in (003) plane and (104) in Miller indices hk 1 attributed surface in the Cu- powder using K line X-ray diffraction peak intensity ratio I (0. 3) ZI ( 1. 4) is 1.21.
- the a-axis length was 2.891 ⁇ and the c-axis length was 14.31 ⁇ .
- the BET specific surface area was 2. lm 2 g- 1 .
- Example 2 when this was used as a cathode material for a battery and an output characteristic test was performed in the same manner as in Example 1, the initial discharge capacity (0.4 mA'cm- 2 ) was 146 mAh / g, and the high-rate discharge ratio was 82.4%. there were. In addition, as a result of performing the same charge / discharge cycle test as in Example 1, the capacity retention ratio was 99.70%.
- the content of elemental sulfur was 500 ppm.
- the initial discharge capacity (0.4 mA ⁇ cm ' 2 ) was 150.0 mA hZg
- the high-rate discharge ratio was 96.9%
- the capacity retention rate (%) was 9 9 97%.
- the lithium foil of the negative electrode was changed to a negative electrode using carbon as a main raw material. That is, Graphite (product name; MCMB) 10 10 parts by weight of PVDF was mixed with 0 parts by weight, and N-methyl-2-pyrrolidone was further added so as to have a solid content of 58 wt% to form a paste. Then, this base was applied on both sides of a copper foil, dried and rolled to prepare a negative electrode. A battery was fabricated and a charge / discharge test was performed in the same manner as when lithium metal was used for the negative electrode. As a result, the capacity retention rate was 99.89%.
- Example 1 1
- the a-axis length was 5.010 angstrom and b
- the axial length was 8.651 angstroms
- the c-axis length was 5.039 angstroms
- ] 3 109.31 °.
- the site occupancy of lithium at the 2c site was 93.9 ° / 0
- the site occupancy of lithium at the 4h site was 93.9 ° / 0 . 94.2%.
- Example 1 2 The same output characteristics test as in Example 11 was performed using this as the cathode material of the battery.
- the initial discharge capacity (0.4 mA 'c: m- 2 ) was 149.9 mAhZg, and the high-rate discharge ratio was 93.8%. Met.
- a charge / discharge cycle test revealed that the capacity retention was 99.90%.
- Example 1 2 The initial discharge capacity (0.4 mA 'c: m- 2 ) was 149.9 mAhZg, and the high-rate discharge ratio was 93.8%. Met.
- a charge / discharge cycle test revealed that the capacity retention was 99.90%.
- Example 1 2 The initial discharge capacity (0.4 mA 'c: m- 2 ) was 149.9 mAhZg, and the high-rate discharge ratio was 93.8%. Met.
- a charge / discharge cycle test revealed that the capacity retention was 99.90%.
- Example 1 2 The initial discharge capacity (0.4 mA 'c: m- 2
- the X-ray diffraction pattern is shown in Fig. 3.
- the reflection of the plane could not be assigned at 20 ° to 22 ° at R-3 m, and a diffraction peak showing a short-period array was clearly observed.
- the powder using the Cu- line at the (002) plane and the (13-3-3) plane at Miller index hk 1 when assigned with monoclinic C12Zml (No.12) peak intensity ratio of X-ray diffraction I (0. 2) Bruno 1 (13 _ 3) was 1.77.
- the site occupancy of lithium at the 2c site was 98.0%, and the site occupancy of lithium at the 4h site was 99.9%. It was 1%.
- An aqueous solution containing 0.20 mol of nickel nitrate and 0.20 mol of manganese nitrate 450 ml of an aqueous solution in which 450 ml and 0.8 mol of sodium hydroxide are dissolved was simultaneously added dropwise to 800 ml of a 1.6 mol / l aqueous ammonia solution while nitrogen bubbling was performed. After that, the mixture was stirred at 25 ° C with stirring. Thereafter, while stirring the pure water 5 L, 1.
- the ilmenite-structured nickel monomanganese oxide and lithium hydroxide monohydrate were mixed in an automatic mortar for 1 hour so that the ⁇ L i / (N i + Mn) ⁇ atomic ratio was 1.12.
- the temperature of the obtained mixture is raised to 100 ° C. in an air stream at 100 ° C. Zr, and then, when the temperature reaches 150 ° C., the temperature is lowered by 100 ° C.
- a lithium-nickel-manganese composite oxide was obtained.
- Example 14 using this as a cathode material of a battery, an output characteristic test similar to that in Example 11 was performed.
- the initial discharge capacity (0. 4mA 'cm_ 2) 145. 9mAhZg, was Haire preparative discharge ratio 93.1%.
- a charge / discharge cycle test revealed that the capacity retention was 99.89%.
- An aqueous solution of 0.20 mol of nickel chloride and 0.20 mol of manganese chloride, 450 m 1, and an aqueous solution of 0.80 mol of sodium hydroxide, 45 Om 1, are simultaneously stirred into pure water, 80 Om 1 while stirring. After the dropwise addition, the mixture was stirred and mixed at 25 ° C overnight. Then, the precipitate was separated by filtration, washed with 10 L of pure water, dried at 80 ° C overnight, and calcined at 400 ° C in an air stream for 2 hours to obtain a ilmenite structure type nickel-manganese oxide. I got something.
- the ilmenite-structured nickel-manganese oxide and lithium hydroxide monohydrate were mixed in an automatic mortar for 1 hour so that the ⁇ L i / (N i + Mn) ⁇ atomic ratio was 1.12.
- the temperature of the resulting mixture is raised to 1050 ° C in an air stream at 100 ° CZhr, and when the temperature reaches 1050 ° C, the temperature is decreased by 100 ° CZhr. Obtained.
- the X-ray diffraction patterns are shown in Fig. 3.
- the X-ray diffraction pattern was subjected to pattern fitting by the Rietve 1d method. As a result, the lithium occupancy at the 2c site was 93.8%, and the lithium occupancy at the 4h site was 93.9%.
- Example 1 1 a As the positive electrode material of the battery, the initial discharge capacity (0. 4mA ⁇ cm one 2) 140. 4mAh / g, Haire preparative discharge ratio 9 2.4 %Met. A charge / discharge cycle test revealed that the capacity retention was 99.90%.
- composition X Lattice constant 3a— site (R- 3m) Capacity maintenance ratio Peak intensity ratio Ratio
- lithium-nickel-manganese composite oxide of the present invention By using the lithium-nickel-manganese composite oxide of the present invention and a method for producing the same, a high-capacity positive electrode active material having excellent rate characteristics and cycle characteristics and a lithium-ion secondary battery using the same are provided. It is possible.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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Description
Claims
Priority Applications (2)
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US10/565,077 US20060188780A1 (en) | 2003-07-18 | 2004-07-12 | Lithium-nickel-manganese composite oxide, processes for producing the same, and use of the same |
EP04747702A EP1652819A1 (en) | 2003-07-18 | 2004-07-12 | Lithium-nickel-manganese composite oxide, process for producing the same and use thereof |
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JP2003-199205 | 2003-07-18 | ||
JP2003199205 | 2003-07-18 | ||
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JP2003208657 | 2003-08-25 |
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US (1) | US20060188780A1 (ja) |
EP (1) | EP1652819A1 (ja) |
KR (1) | KR20060041241A (ja) |
WO (1) | WO2005007577A1 (ja) |
Cited By (3)
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CN1321881C (zh) * | 2005-09-23 | 2007-06-20 | 北京科技大学 | 一种采用低热固相反应制备锂镍锰氧化物材料的方法 |
WO2015008698A1 (en) * | 2013-07-15 | 2015-01-22 | Semiconductor Energy Laboratory Co., Ltd. | Lithium-manganese composite oxide, secondary battery, and electric device |
WO2018096972A1 (ja) * | 2016-11-22 | 2018-05-31 | 国立研究開発法人産業技術総合研究所 | リチウムマンガン系複合酸化物及びその製造方法 |
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US8529800B2 (en) | 2005-09-29 | 2013-09-10 | Massachusetts Institute Of Technology | Oxides having high energy densities |
KR20090037452A (ko) * | 2006-07-10 | 2009-04-15 | 스미또모 가가꾸 가부시끼가이샤 | 리튬 복합 금속 산화물 |
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JP7408270B2 (ja) * | 2015-03-10 | 2024-01-05 | 日本化学産業株式会社 | 非水電解質リチウム二次電池用正極活物質及びその製造方法 |
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CN117096337A (zh) | 2017-05-19 | 2023-11-21 | 株式会社半导体能源研究所 | 锂离子二次电池 |
KR102529616B1 (ko) | 2017-06-26 | 2023-05-04 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 양극 활물질의 제작 방법 및 이차 전지 |
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- 2004-07-12 KR KR1020067001076A patent/KR20060041241A/ko not_active Application Discontinuation
- 2004-07-12 EP EP04747702A patent/EP1652819A1/en not_active Withdrawn
- 2004-07-12 WO PCT/JP2004/010238 patent/WO2005007577A1/ja not_active Application Discontinuation
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1321881C (zh) * | 2005-09-23 | 2007-06-20 | 北京科技大学 | 一种采用低热固相反应制备锂镍锰氧化物材料的方法 |
WO2015008698A1 (en) * | 2013-07-15 | 2015-01-22 | Semiconductor Energy Laboratory Co., Ltd. | Lithium-manganese composite oxide, secondary battery, and electric device |
US9293236B2 (en) | 2013-07-15 | 2016-03-22 | Semidonconductor Energy Laboratory Co., Ltd. | Lithium—manganese composite oxide, secondary battery, and electric device |
WO2018096972A1 (ja) * | 2016-11-22 | 2018-05-31 | 国立研究開発法人産業技術総合研究所 | リチウムマンガン系複合酸化物及びその製造方法 |
JPWO2018096972A1 (ja) * | 2016-11-22 | 2019-10-17 | 国立研究開発法人産業技術総合研究所 | リチウムマンガン系複合酸化物及びその製造方法 |
US11417881B2 (en) | 2016-11-22 | 2022-08-16 | National Institute ot Advanced Industrial Science and Technology | Lithium-manganese complex oxide and method for producing same |
JP7128475B2 (ja) | 2016-11-22 | 2022-08-31 | 国立研究開発法人産業技術総合研究所 | リチウムマンガン系複合酸化物及びその製造方法 |
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US20060188780A1 (en) | 2006-08-24 |
KR20060041241A (ko) | 2006-05-11 |
EP1652819A1 (en) | 2006-05-03 |
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