WO1998054768A1 - Electrode pour cellules electrolytiques non aqueuses - Google Patents
Electrode pour cellules electrolytiques non aqueuses Download PDFInfo
- Publication number
- WO1998054768A1 WO1998054768A1 PCT/JP1998/002319 JP9802319W WO9854768A1 WO 1998054768 A1 WO1998054768 A1 WO 1998054768A1 JP 9802319 W JP9802319 W JP 9802319W WO 9854768 A1 WO9854768 A1 WO 9854768A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composite oxide
- electrode
- lithium composite
- particle size
- active material
- Prior art date
Links
- 239000002245 particle Substances 0.000 claims abstract description 58
- 239000002131 composite material Substances 0.000 claims abstract description 56
- 239000011149 active material Substances 0.000 claims abstract description 26
- 238000009826 distribution Methods 0.000 claims abstract description 21
- 238000004438 BET method Methods 0.000 claims abstract description 13
- 229910052744 lithium Inorganic materials 0.000 claims description 52
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 47
- 239000011255 nonaqueous electrolyte Substances 0.000 claims description 17
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052712 strontium Inorganic materials 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 abstract description 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N lithium oxide Chemical compound [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 abstract 2
- 229910001947 lithium oxide Inorganic materials 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 34
- -1 alkali metal salt Chemical class 0.000 description 17
- 239000003973 paint Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 11
- 239000011230 binding agent Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910052728 basic metal Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 8
- 239000006258 conductive agent Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 8
- 238000002360 preparation method Methods 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 238000010304 firing Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- 150000002641 lithium Chemical class 0.000 description 5
- 150000002642 lithium compounds Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 150000002736 metal compounds Chemical class 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 4
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 4
- 239000002033 PVDF binder Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 4
- 239000007774 positive electrode material Substances 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 2
- 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
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011164 primary particle Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910052706 scandium Inorganic materials 0.000 description 2
- 239000012798 spherical particle Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 1
- PTTPXKJBFFKCEK-UHFFFAOYSA-N 2-Methyl-4-heptanone Chemical compound CC(C)CC(=O)CC(C)C PTTPXKJBFFKCEK-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 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
- 229920002943 EPDM rubber Polymers 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920002153 Hydroxypropyl cellulose Polymers 0.000 description 1
- 229920006370 Kynar Polymers 0.000 description 1
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- PFYQFCKUASLJLL-UHFFFAOYSA-N [Co].[Ni].[Li] Chemical compound [Co].[Ni].[Li] PFYQFCKUASLJLL-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- RIVXQHNOKLXDBP-UHFFFAOYSA-K aluminum;hydrogen carbonate Chemical compound [Al+3].OC([O-])=O.OC([O-])=O.OC([O-])=O RIVXQHNOKLXDBP-UHFFFAOYSA-K 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- 239000003125 aqueous solvent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 229910021383 artificial graphite Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 150000003818 basic metals Chemical group 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002134 carbon nanofiber Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003660 carbonate based solvent Substances 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000006231 channel black Substances 0.000 description 1
- UFMZWBIQTDUYBN-UHFFFAOYSA-N cobalt dinitrate Chemical compound [Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O UFMZWBIQTDUYBN-UHFFFAOYSA-N 0.000 description 1
- CKFRRHLHAJZIIN-UHFFFAOYSA-N cobalt lithium Chemical compound [Li].[Co] CKFRRHLHAJZIIN-UHFFFAOYSA-N 0.000 description 1
- 229910001981 cobalt nitrate Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- SMBQBQBNOXIFSF-UHFFFAOYSA-N dilithium Chemical compound [Li][Li] SMBQBQBNOXIFSF-UHFFFAOYSA-N 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000011532 electronic conductor Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000006232 furnace black Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001863 hydroxypropyl cellulose Substances 0.000 description 1
- 235000010977 hydroxypropyl cellulose Nutrition 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000003273 ketjen black Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- RSNHXDVSISOZOB-UHFFFAOYSA-N lithium nickel Chemical compound [Li].[Ni] RSNHXDVSISOZOB-UHFFFAOYSA-N 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910001510 metal chloride Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
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- 235000019422 polyvinyl alcohol Nutrition 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
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- 238000000790 scattering method Methods 0.000 description 1
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- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
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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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/131—Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
-
- 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
-
- 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
- C01G45/1242—Manganates or manganites with a manganese oxidation state of Mn(III), Mn(IV) or mixtures thereof of the type [Mn2O4]-, e.g. LiMn2O4, Li[MxMn2-x]O4
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/40—Cobaltates
- C01G51/42—Cobaltates containing alkali metals, e.g. LiCoO2
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- 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
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- 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
- H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
- H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/51—Particles with a specific particle size distribution
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/10—Solid density
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/40—Electric properties
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- 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
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- 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
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/028—Positive electrodes
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- 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
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
- H01M4/1391—Processes of manufacture of electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/109—Primary casings; Jackets or wrappings characterised by their shape or physical structure of button or coin shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to an electrode for a non-aqueous electrolyte battery, and more particularly, to a non-aqueous electrolyte battery using a lithium composite oxide as an active material, which can provide a battery with a high capacity and excellent in the characteristics of drying. For electrodes.
- lead-acid batteries and nickel-cadmium batteries have been used for these electronic devices, but these batteries cannot sufficiently meet the demands for miniaturization, weight reduction, and high energy density.
- non-aqueous electrolyte battery using a non-aqueous electrolyte in which a lithium salt is dissolved in a non-aqueous solvent uses a lithium-cobalt composite oxide, using a lithium-lithium alloy or a carbon material capable of doping and undoping lithium ions as a negative electrode material. Materials that use these materials as positive electrode materials have already been put into practical use.
- This type of non-aqueous electrolyte battery has the advantages of a high operating voltage of 3 to 4 V, enabling high energy density, low self-discharge, and excellent cycle characteristics. I have. Also, in this nonaqueous electrolyte battery, research and development of active materials and the like have been actively pursued in order to realize further miniaturization, weight reduction, and high energy density.
- As the positive electrode active material lithium-containing composite oxides containing Ni such as lithium nickel composite oxide and lithium nickel cobalt composite oxide have been proposed.
- Lithium-ion rechargeable batteries are often used in notebook PCs, but PC hard discs require momentary but large currents in some cases, and in this respect they have excellent high-rate characteristics. Batteries are required.
- an object of the present invention is to solve the above-mentioned problems of the prior art and to provide an electrode for a non-aqueous electrolyte battery which can provide a battery with a high capacity and has excellent high-rate characteristics.
- the present inventors have found that the above problems can be solved by using a lithium composite oxide having a specific surface area by a specific BET method as an electrode active material, and completed the present invention. did.
- the present invention relates to an electrode for a non-aqueous electrolyte battery including a lithium composite oxide as an active material, wherein the lithium composite oxide has a specific surface area by a BET method of Sa, and a particle of the lithium composite oxide.
- r be the diameter
- f (r) be the particle size distribution of the lithium composite oxide
- d be the density of the lithium composite oxide.
- S c is given by the following equation (I)
- An electrode for a non-aqueous electrolyte battery that satisfies the following.
- the lithium composite oxide preferably satisfies 2 ⁇ S aZS c ⁇ 8.
- the lithium composite oxide is Li x N i y 0 2 (where x is 0.8 ⁇ 0 ⁇ 1.5, y + z is 0.8 ⁇ y + z ⁇ 1.2 And z are 0 ⁇ z ⁇ 0.35.
- M represents at least one element selected from Co, Mg, Ca, Sr, Al, Mn, and Fe.) Preferably it is.
- a lithium composite oxide having a specific surface area Sa that is, 5 ⁇ Sa / Sc ⁇ 10
- a specific BET method is used as an electrode active material, so that it is used for a battery. It is possible to obtain a battery that can provide high capacity and has excellent high-rate characteristics and cycle characteristics.
- a lithium composite oxide is used as an active material.
- the lithium composite oxide L i X N iy Mz 0 2
- M is C o , Represents at least one element selected from Mg, Ca, Sr, Al, Mn, and Fe.) Is particularly preferable in terms of high capacity and low cost.
- the metal M may be two or more metals, with Co being more preferred.
- Li Metal 3 + 02 (where Metal is mainly Ni, Co, Mg, Ca, Sr, A 1, containing at least one element selected from Mn and Fe)
- a water-soluble medium containing an alkaline water-soluble lithium compound and an alkali metal salt, each containing anions that diffuse during firing A method in which a slurry is obtained by reacting in a slurry, and the obtained slurry is dried and then fired can be exemplified.
- the basic metal salt is represented by Metal 2+ (OH) 2 — nk (A n —) k ⁇ mH 2 ⁇ .
- Metal 2+ includes at least one selected from C 0, Mg, C a, S r, A 1, M n, and Fe, mainly composed of Ni.
- K is 0.0 3 ⁇ k ⁇ 0.3
- m is 0 or 2.
- Basic metal salt represented by the formula in an aqueous solution of Metal 2 +, for the Metal 2 +, about 0.7 to 0.9 5 equivalents, preferable properly about 0.8 to 0.9 5 equivalents Alkali is added and reacted under reaction conditions of about 80 ° C or less, then aged at 40 ° C to 70 ° C for 0.1 to 10 hours, and then washed with water to remove by-products. can do.
- alkali used here include alkali metal hydroxides such as sodium hydroxide, alkaline earth metal hydroxides such as calcium hydroxide, and amines.
- a basic metal salt selected from the compounds represented by this formula One or more lithium compounds selected from the group consisting of aluminum, lithium carbonate and hydrates thereof, in water at a concentration of 5 to 25% by weight of the reaction solution, and The reaction is carried out at room temperature to 100 ° C to obtain slurry. Then, spray drying is performed to improve the uniformity of the shape of the composition.
- the dried product is subjected to heat treatment for about 0.1 to 20 hours in a temperature range of about 700 to 100 ° C. in an atmosphere having an oxidizing power including air, oxygen, or ozone.
- an oxidizing power including air, oxygen, or ozone.
- a method using a basic metal carbonate obtained from a water-soluble metal compound and a water-soluble lithium compound can be exemplified.
- the water-soluble metal compounds used here are nitrates, sulfates, metal chlorides, and the like. These water-soluble metal compounds are mainly composed of nickel compounds, and include Co, Mg, Ca, Sr, Al, It may be a mixture of a predetermined amount of another water-soluble metal compound so that at least one element selected from Mn and Fe can be blended.
- the basic metal carbonate is a precipitate obtained by reacting a mixture of the above water-soluble metal compound with a compound selected from the group consisting of alkali carbonate, aluminum bicarbonate, ammonium carbonate, and ammonium bicarbonate in water. Further, a precipitate obtained by reacting the reaction system in the presence of sodium hydroxide can be obtained by filtration and drying. In this case, in order to produce a good precipitate, it is better to use the carbonate in a slightly excessive amount, and it is also important to control the stirring conditions to control the specific surface area of the precipitate.
- a powder of a water-soluble lithium compound such as lithium carbonate or lithium hydroxide is added to the basic metal carbonate thus obtained, and the metal and Li are mixed in a desired ratio. Mix at a rate.
- This mixture as a powder, is first heated to 300-500 ° C. in the presence of an inert gas or an oxygen-containing gas. By this heating, only the decomposition of the basic metal carbonate proceeds, and the carbon dioxide in the crystal structure is released. This heating is continued until the generation of carbon dioxide gas substantially ends, and all of the basic metal carbonate is converted into a metal oxide having many fine pores.
- the molten water-soluble lithium compound penetrates into the fine pores of the metal oxide, and the two are brought into extremely close contact.
- Ni becomes divalent to trivalent, and a Li composite oxide is formed.
- the basic metal carbonate used here preferably has a larger specific surface area (for example, 100 m 2 or more), since the gas release and the formation of micropores after pre-firing are more efficient.
- the lithium composite oxide thus obtained is dried and used to reduce the amount of water, or is kept in a dry state immediately after production. Such an operation avoids a decrease in battery capacity, an increase in impedance, and a deterioration in storage stability due to the presence of a large amount of water in the active material, thereby realizing a battery having a high energy density.
- the lithium composite oxide used in the present invention needs to have a specific surface area determined by the following specific BET method among those described above. That is, the specific surface area of the lithium composite oxide measured by the BET method is Sa, the particle size of the lithium composite oxide is r, the particle size distribution of the lithium composite oxide is f (r), the density of the lithium composite oxide.
- d be Sc
- Sc be the following formula (I):
- the particle size distribution f (r) is measured by a laser diffraction-scattering method, and can be measured using, for example, a Microtrack particle size analyzer (manufactured by Nikkiso Co., Ltd.).
- the particle size distribution f (r) is
- the range of particle size can be determined, and the ratio of particles having a particle size in that range to the whole can be measured for each range. For example, suppose that the boundaries of the range of particle diameters are R i, .. R n ... R x in ascending order, and that the ratio of particles of R n to R n +1 in the whole can be measured as P n .
- Battery characteristics are affected by the contact between the active material and the electrolyte, and the contact between the active material and the conductive agent. The contact between the active material and the electrolyte is related to the reaction between lithium ions and the active material, and the contact between the active material and the conductive agent is related to the flow of electrons.
- This ratio (S aZS c) is strong, preferably 2 ⁇ 338 0 ⁇ 8, and more preferably 5 ⁇ S aZS c ⁇ 8.
- the lithium composite oxide has a BET specific surface area S a that satisfies the above-mentioned ratio (S aZS c)
- its shape may be any shape such as a spherical shape and an amorphous shape.
- the control of S a Sc of the lithium composite oxide can be performed as follows. For example, with respect to Sa, when the firing temperature of the lithium composite oxide is increased, the surface roughness is reduced and the surface area is reduced, so that a smaller Sa can be obtained. On the other hand, when the firing temperature is lowered, the opposite tendency is obtained, so that a material having a large Sa is obtained. It is also possible to control S aZ S c by adjusting the size of the primary particles and the size of the secondary particles (how the primary particles gather).
- the electrode of the present invention is prepared by kneading the above-mentioned specific lithium composite oxide, conductive agent and binder with an organic solvent to prepare a mixture paint, and applying and drying this mixture paint on a current collector. Can be produced.
- the conductive agent used in the present invention is not particularly limited. Any material can be used as long as the material does not cause the formation of an electron.
- the conductive agent usually, graphite such as natural graphite (flaky graphite, flaky graphite, etc.), artificial graphite, acetylene black, ketjen black, channel black, furnace black, Examples include carbon blacks such as thermal blacks, conductive fibers such as carbon fibers, vapor-grown carbon fibers, and metal fibers, and metal powders such as copper, nickel, aluminum, and silver. Of these, scaly graphite is preferred.
- the conductive agent examples include LF series manufactured by Chuetsu Graphite Industries, UFG series manufactured by Showa Denko, KS series manufactured by L0NZA, and MICROCARBO-G manufactured by Kansai Thermal Chemical. Series, Ecoscan, manufactured by Ecos Giken Co., Ltd., Denka Black, manufactured by Denki Kagaku Kogyo.
- the amount of the conductive agent varies depending on the specific surface area of the active material and the like, but is preferably from 1 to 15% by weight, more preferably from 2 to 10% by weight in the dried coating film.
- one or a mixture of two or more thermoplastic resins or polymers having rubber elasticity can be used as the binder.
- binders include fluoropolymers, polyvinyl alcohol, carboxymethylcellulose, hydroxypropylcellulose, regenerated cellulose diacetyl cellulose, polyvinyl chloride, polyvinylpyrrolidone, polyethylene, polypropylene, EPDM, sulfonated EPDM, SBR, polybutadiene, polyethylene oxide and the like can be mentioned.
- the fluorine-containing polymer is preferably one having an atomic ratio of fluorine atoms and Z carbon atoms of 0.75 or more and 1.5 or less, more preferably 0.75 or more and 1.3 or less. Preferred. If this value is larger than 1.5, it is difficult to obtain a sufficient capacity of the battery, while if it is smaller than 0.75, the binder tends to be dissolved in the electrolyte.
- fluorine-containing polymer polytetrafluoroethylene is used.
- polytetrafluoroethylene is used.
- a fluorine-containing polymer in which hydrogen in the main chain is substituted with an alkyl group can also be used.
- those exhibiting selective solubility are preferable.
- vinylidene fluoride-based polymer it is difficult to dissolve in the carbonate-based solvent used for the electrolytic solution, but it is difficult to dissolve it in N, N-dimethylformamide, N-methylpyrrolidone, etc. It can be dissolved in a solvent.
- the amount of such a binder varies depending on the specific surface area of the active material and the conductive agent, the particle size distribution, the strength of the target electrode, etc., but is preferably 1 to 15% by weight in the dry coating film, 10% by weight is more preferred.
- the solvent for the electrode active material mixture paint is not particularly limited, and a general organic solvent can be used.
- the organic solvent include saturated hydrocarbons such as hexane, aromatic hydrocarbons such as toluene and xylene, alcohols such as methanol, ethanol, propanol and butanol, acetate, and the like.
- Ketones such as methylethyl ketone, methyl isobutyl ketone, diisobutyl ketone, cyclohexanone, esters such as ethyl acetate and butyl acetate, tetrahydrofuran, dioxane, getyl ether, etc.
- Ethers N.N-dimethylformamide, N-methylpyrrolidone, N, N-amides such as dimethylacetamide, ethylenic amide, halogenated hydrocarbons such as chlorobenzene, etc.
- ketone-based and amide-based solvents are preferable because they can dissolve the fluorine-containing polymer. These solvents can be used alone or in combination of two or more.
- the prepared mixture paint is applied on a current collector and dried.
- Current collector is particularly limited It does not need to be limited to anything, as long as it is an electronic conductor that does not chemically change when it is made into a battery.
- Aluminum, aluminum alloy, nickel, stainless steel, titanium and the like are used. In addition to these, aluminum and stainless steel whose surface is treated with stainless steel, nickel and titanium are also used. In particular, aluminum or aluminum alloy is preferred.
- As the shape of the current collector a film, a net, a porous body, a foam, or the like is used in addition to a foil. A thickness of 1 to 100 m is used, and a thickness of 1 to 50 m is particularly preferable.
- the application of the electrode active material mixture paint on the current collector can be performed by the reverse roll method, the direct roll method, the pread method, the knife method, the extrusion nozzle method, the curtain method, the gravure roll method, and the vacuum coating method.
- the coating can be performed by a generally well-known coating method such as a coating method, a dipping method, a kissing method, and a squeezing method.
- the extrusion nozzle method is preferred, and a good coating layer surface condition can be obtained by selecting the solvent composition of the mixture and the drying conditions so that the coating is performed at a speed of 5 to 100 mZ. be able to.
- the drying temperature is preferably from 30 to 150 ° C, more preferably from 50 to 140 ° C. If the temperature is lower than 30 ° C, drying of the solvent becomes insufficient. If the temperature exceeds 150 ° C, the evaporation rate of the solvent is too rapid, so that the binder is unevenly distributed on the surface layer of the electrode, and the electrode characteristics deteriorate. Sometimes.
- the thickness, length and width of the coating layer are determined by the final size of the battery. It is preferable that the thickness of the coating layer is adjusted after coating by a commonly used press working.
- the working pressure is preferably 0.2 to 10 tZcm, and the working temperature is preferably 10 to 150 ° C.
- FIG. 1 shows the measurement results of the particle size distribution of the lithium composite oxide used in Example 1. It is a graph of a fruit. Particle size r (X 10 — G m) VS. Frequency f (r).
- FIG. 2 is a cross-sectional view of a coin-type battery for measuring battery characteristics used in Examples. BEST MODE FOR CARRYING OUT THE INVENTION
- NiZCo (molar ratio) 0.8 / 0.2 to form a precipitate, which is then dried with a spray dryer to obtain roughly spherical particles.
- I got The this particle hydroxide lithium ⁇ beam L i / N i / C o ( mole ratio) 1 / 0.8 / mixed and fired at 0. 2, L i N i 0. 8 C 00. 2 02 I got This places a particle size distribution of the classified to independent particles was boss measured using micro track particle size analyzer (manufactured by Nikkiso Co., Ltd.), average particle size was 1 0 X 1 0- 6 m.
- the specific surface area by the BET method was 0.3 m 2 Zg, the density was 5.0 ⁇ 10 6
- Table 1 and Fig. 1 show the measurement results of the particle size distribution.
- Figure 1 is a graph of the results of Table 1, the particle size r - shows the (X 1 0 6 m) VS. frequency f (r).
- an electrode mixture paint having the following composition was prepared.
- Positive electrode active material 93 parts by weight of the above lithium composite oxide
- Conductive material LONZA GraphiteK S2 5 4 parts by weight
- Binder Elpha Tochem Japan KYNAR 7 4 1 3 parts by weight
- PVDF Polyvinylidene fluoride
- NMP N-methyl-2-pyrrolidone
- 3 parts by weight of PVDF was dissolved in 7 parts by weight of NMPP to prepare 30 parts by weight of a binder solution.
- 9 parts by weight of the active material 9 and 4 parts by weight of the conductive material were dry-mixed with a hyper mixer, and the mixture was charged into a pressure kneader.
- To the mixture was added 13 parts by weight of the binder solution, and the mixture was kneaded for 30 minutes while cooling the pressurized jacket with water.
- the kneaded product was taken out, added with 17 parts by weight of a binder solution and 40 parts by weight of NMP, and dissolved with a hyper mixer to obtain an active material mixture paint.
- the prepared mixture paint is applied to one side of a current collector made of aluminum foil with a thickness of 20 m using a bladecoil, dried and then compression-molded using a mouth press machine. Then, the electrode of Example 1 having a mixture layer thickness of 65; am was obtained.
- Example 2 Until calcination as in Example 1 in the same manner to obtain a L i N i u. 8 C 0 0 2.
- the particle size distribution of the classified to independent particles was measured using a Microtrac particle size analyzer, the average particle size was found to be 2 2 X 1 0 one 6 m, The specific surface area by the BET method was 0.24 m 2 Zg, the density was 5.0 ⁇ 10 ° g Zm 3 , and the Sa / S c was 4.4 from the measurement result of the particle size distribution.
- An electrode mixture paint was prepared in the same manner as in Example 1 except that this lithium composite oxide was used as an active material, to obtain an electrode of Example 2 having a mixture layer thickness of 65 m.
- Example 2 Until before firing as in Example 1 was operated in the same way, the sintering temperature and sintering is lowered than in Example 1, to obtain a L i N i 0. 8 CO 0.
- the particle size distribution of the classified to selected resulting particles was measured using a Microtrac particle size analyzer, the average particle size was 1 5 X 1 0- G m.
- the specific surface area by the BET method was 0.58 m 2 / g, the density was 5.0 ⁇ 10 ⁇ gZm 3 , and the SaZS c was 7.1 from the measurement results of the particle size distribution.
- a mixture paint for an electrode was prepared in the same manner as in Example 1 except that this lithium composite oxide was used as an active material, to obtain an electrode of Example 3 having a mixture layer thickness of 65 / m.
- Example 3 Until calcination as in Example 3 in the same manner to obtain a L i N i 8 C o 0 .
- the particles were classified and the particle size distribution of the selected particles was measured using a Microtrac particle size analyzer. As a result, the average particle size was 30 ⁇ 10—fim.
- the specific surface area by the BET method was 0.46 m 2 , the density was 5.0 ⁇ 10 6 g / m 3 , and Sa ZS c was 11 from the measurement result of the particle size distribution.
- An electrode mixture paint was prepared in the same manner as in Example 1 except that this lithium composite oxide was used as an active material, to obtain an electrode of Comparative Example 1 having a mixture layer thickness of 65 m.
- Example 3 Until before firing as in Example 3 was operated in the same way, the sintering temperature and sintering is lowered than in Example 3, to obtain a L i N i 0. 8 CO 0. 2 02.
- the average particle size was 17 ⁇ 10 16 m.
- Specific surface area by the BET method 0. 9 1 m 2 Roh g, a density of 5. a 0 X 1 0 6 g / m 3, from the measurement results of the particle size distribution, the S a / S c 1 0. 8 Met.
- An electrode mixture paint was prepared in the same manner as in Example 1 except that this lithium composite oxide was used as an active material, to obtain an electrode of Comparative Example 2 having a mixture layer thickness of 65 m.
- the positive electrode active material layer was dried to remove residual moisture to produce a circular positive electrode having a diameter of 15.5 mm. Separately, 1.85 mm thick metallic lithium was punched into a 15.5 mm diameter negative electrode.
- ethylene carbonate Natick preparative and Jimechiruka one Bone sheet 1: 1 was prepared (volume ratio) mixed liquid L i PF beta 1 mol / Li Tsu Torr consisting concentration nonaqueous electrolytic solution dissolved in.
- FIG. 1 A coin-type battery having a diameter of 20 mm and a thickness of 2.5 mm was fabricated.
- the coin-type battery is composed of a positive electrode (4) housed in a positive electrode can (6) and a negative electrode (2) housed in a negative electrode cup (1).
- the positive electrode can (6) and the negative electrode cup (1) are caulked via a gasket (5) and hermetically sealed. The illustration of the current collector is omitted.
- the battery prepared in this manner was charged at a battery voltage of 4.2 V and a charging current of 1 mA, and then charged at a battery voltage of 4.2 V under a charging time of 20 hours. Discharge was performed under the conditions of l mA and a battery voltage of 3.0 V, and the charge / discharge capacity was determined. In addition, the discharge current was set to 1 O mA, and the ratio to the initial capacity was measured as high-rate characteristics. The results are shown in Table 2.
- a lithium composite oxide having a specific surface area Sa that is, 1.S ⁇ SaZSc ⁇ 10) by a specific BET method is used as an electrode active material.
- a high capacity can be provided to the battery, and a battery having excellent high-rate characteristics and cycle characteristics can be obtained.
- the present invention contributes to improving the high capacity characteristics of the non-aqueous electrolyte battery.
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Description
Claims
Priority Applications (4)
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KR10-1999-7010905A KR100539322B1 (ko) | 1997-05-27 | 1998-05-27 | 비수성 전해질 전지용 전극 |
EP98921826.8A EP0986115B1 (en) | 1997-05-27 | 1998-05-27 | Electrode for non-aqueous electrolytic cells |
AU74524/98A AU7452498A (en) | 1997-05-27 | 1998-05-27 | Electrode for non-aqueous electrolytic cells |
JP50047899A JP4410315B2 (ja) | 1997-05-27 | 1998-05-27 | 非水電解質電池用電極 |
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JP13665897 | 1997-05-27 | ||
JP9/136658 | 1997-05-27 |
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WO1998054768A1 true WO1998054768A1 (fr) | 1998-12-03 |
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PCT/JP1998/002319 WO1998054768A1 (fr) | 1997-05-27 | 1998-05-27 | Electrode pour cellules electrolytiques non aqueuses |
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EP (1) | EP0986115B1 (ja) |
JP (2) | JP4410315B2 (ja) |
KR (1) | KR100539322B1 (ja) |
CN (1) | CN1120533C (ja) |
AU (1) | AU7452498A (ja) |
RU (1) | RU2183368C2 (ja) |
WO (1) | WO1998054768A1 (ja) |
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KR100488226B1 (ko) * | 1996-09-12 | 2005-06-16 | 도와 고교 가부시키가이샤 | 비수성계이차전지용양전극활성물질및이활성물질의제조방법 |
JP5153027B2 (ja) * | 1999-01-28 | 2013-02-27 | 日立金属株式会社 | リチウム二次電池の正極材の製造方法 |
JP4106644B2 (ja) | 2000-04-04 | 2008-06-25 | ソニー株式会社 | 電池およびその製造方法 |
US6709788B2 (en) * | 2001-05-11 | 2004-03-23 | Denso Corporation | Lithium secondary cell and method of producing lithium nickel metal oxide positive electrode therefor |
GB0601319D0 (en) * | 2006-01-23 | 2006-03-01 | Imp Innovations Ltd | A method of fabricating pillars composed of silicon-based material |
GB2493375A (en) * | 2011-08-03 | 2013-02-06 | Leclancha S A | Aqueous slurry for battery electrodes |
JP6164332B2 (ja) * | 2015-04-28 | 2017-07-19 | 日亜化学工業株式会社 | ニッケルコバルト複合水酸化物粒子とその製造方法、非水系電解質二次電池用正極活物質とその製造方法、ならびに、非水系電解質二次電池 |
TWI756556B (zh) * | 2019-08-05 | 2022-03-01 | 輝能科技股份有限公司 | 活性材料球極層結構 |
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JPH06267539A (ja) * | 1993-03-10 | 1994-09-22 | Toshiba Corp | リチウム二次電池 |
JPH07230808A (ja) * | 1994-02-18 | 1995-08-29 | Dowa Mining Co Ltd | 非水リチウム二次電池用正極活物質とその製造方法およびリチウム二次電池 |
JPH09219190A (ja) * | 1996-02-08 | 1997-08-19 | Sony Corp | 非水電解質二次電池及びその製造方法 |
JPH1074517A (ja) * | 1996-08-29 | 1998-03-17 | Murata Mfg Co Ltd | リチウム二次電池 |
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JPH076763A (ja) * | 1993-06-15 | 1995-01-10 | Toray Ind Inc | 非水溶媒系二次電池 |
JPH07142056A (ja) * | 1993-11-18 | 1995-06-02 | Sanyo Electric Co Ltd | 非水系電池 |
EP0789412B1 (en) * | 1994-10-27 | 2000-01-19 | Fuji Photo Film Co., Ltd. | Nonaqueous secondary cell and its manufacturing method |
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JP4120014B2 (ja) * | 1996-08-16 | 2008-07-16 | 堺化学工業株式会社 | 粒子状組成物の製造方法 |
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1998
- 1998-05-27 CN CN98805048A patent/CN1120533C/zh not_active Expired - Fee Related
- 1998-05-27 WO PCT/JP1998/002319 patent/WO1998054768A1/ja active IP Right Grant
- 1998-05-27 EP EP98921826.8A patent/EP0986115B1/en not_active Expired - Lifetime
- 1998-05-27 JP JP50047899A patent/JP4410315B2/ja not_active Expired - Fee Related
- 1998-05-27 RU RU99128042/09A patent/RU2183368C2/ru active
- 1998-05-27 AU AU74524/98A patent/AU7452498A/en not_active Abandoned
- 1998-05-27 KR KR10-1999-7010905A patent/KR100539322B1/ko not_active IP Right Cessation
- 1998-05-27 JP JP10161508A patent/JPH1145718A/ja not_active Withdrawn
Patent Citations (4)
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JPH06267539A (ja) * | 1993-03-10 | 1994-09-22 | Toshiba Corp | リチウム二次電池 |
JPH07230808A (ja) * | 1994-02-18 | 1995-08-29 | Dowa Mining Co Ltd | 非水リチウム二次電池用正極活物質とその製造方法およびリチウム二次電池 |
JPH09219190A (ja) * | 1996-02-08 | 1997-08-19 | Sony Corp | 非水電解質二次電池及びその製造方法 |
JPH1074517A (ja) * | 1996-08-29 | 1998-03-17 | Murata Mfg Co Ltd | リチウム二次電池 |
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Title |
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See also references of EP0986115A4 * |
Also Published As
Publication number | Publication date |
---|---|
JPH1145718A (ja) | 1999-02-16 |
JP4410315B2 (ja) | 2010-02-03 |
EP0986115A1 (en) | 2000-03-15 |
KR20010012937A (ko) | 2001-02-26 |
CN1256013A (zh) | 2000-06-07 |
RU2183368C2 (ru) | 2002-06-10 |
KR100539322B1 (ko) | 2005-12-27 |
CN1120533C (zh) | 2003-09-03 |
AU7452498A (en) | 1998-12-30 |
EP0986115A4 (en) | 2005-03-02 |
EP0986115B1 (en) | 2015-03-11 |
EP0986115A8 (en) | 2001-10-04 |
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