JP6838521B2 - 全固体電池および負極 - Google Patents
全固体電池および負極 Download PDFInfo
- Publication number
- JP6838521B2 JP6838521B2 JP2017155221A JP2017155221A JP6838521B2 JP 6838521 B2 JP6838521 B2 JP 6838521B2 JP 2017155221 A JP2017155221 A JP 2017155221A JP 2017155221 A JP2017155221 A JP 2017155221A JP 6838521 B2 JP6838521 B2 JP 6838521B2
- Authority
- JP
- Japan
- Prior art keywords
- porous layer
- layer
- negative electrode
- solid
- state battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007784 solid electrolyte Substances 0.000 claims description 49
- 229910052751 metal Inorganic materials 0.000 claims description 39
- 239000002184 metal Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 34
- 239000011347 resin Substances 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 238000004090 dissolution Methods 0.000 claims description 29
- 239000004020 conductor Substances 0.000 claims description 18
- 239000007774 positive electrode material Substances 0.000 claims description 16
- 239000002033 PVDF binder Substances 0.000 claims description 10
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 10
- 238000003411 electrode reaction Methods 0.000 claims description 7
- 210000004027 cell Anatomy 0.000 description 24
- 238000011156 evaluation Methods 0.000 description 24
- 239000011149 active material Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 238000001556 precipitation Methods 0.000 description 14
- 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 11
- 229910052744 lithium Inorganic materials 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 239000007773 negative electrode material Substances 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 9
- 229910018130 Li 2 S-P 2 S 5 Inorganic materials 0.000 description 8
- 229910001416 lithium ion Inorganic materials 0.000 description 8
- 239000002203 sulfidic glass Substances 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(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)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 239000003273 ketjen black Substances 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 5
- 239000002134 carbon nanofiber Substances 0.000 description 5
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Inorganic materials [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 229910018091 Li 2 S Inorganic materials 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 210000001787 dendrite Anatomy 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000003701 mechanical milling Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- 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 3
- 229910001228 Li[Ni1/3Co1/3Mn1/3]O2 (NCM 111) Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910003480 inorganic solid Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- OHVLMTFVQDZYHP-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CN1CCN(CC1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O OHVLMTFVQDZYHP-UHFFFAOYSA-N 0.000 description 2
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910018133 Li 2 S-SiS 2 Inorganic materials 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 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 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000006230 acetylene black Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- 239000002241 glass-ceramic Substances 0.000 description 2
- 239000010416 ion conductor Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- IHCCLXNEEPMSIO-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperidin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 IHCCLXNEEPMSIO-UHFFFAOYSA-N 0.000 description 1
- 229910005839 GeS 2 Inorganic materials 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910018127 Li 2 S-GeS 2 Inorganic materials 0.000 description 1
- 229910018119 Li 3 PO 4 Inorganic materials 0.000 description 1
- 229910004043 Li(Ni0.5Mn1.5)O4 Inorganic materials 0.000 description 1
- 229910009324 Li2S-SiS2-Li3PO4 Inorganic materials 0.000 description 1
- 229910009320 Li2S-SiS2-LiBr Inorganic materials 0.000 description 1
- 229910009316 Li2S-SiS2-LiCl Inorganic materials 0.000 description 1
- 229910009318 Li2S-SiS2-LiI Inorganic materials 0.000 description 1
- 229910009328 Li2S-SiS2—Li3PO4 Inorganic materials 0.000 description 1
- 229910007281 Li2S—SiS2—B2S3LiI Inorganic materials 0.000 description 1
- 229910007295 Li2S—SiS2—Li3PO4 Inorganic materials 0.000 description 1
- 229910007291 Li2S—SiS2—LiBr Inorganic materials 0.000 description 1
- 229910007288 Li2S—SiS2—LiCl Inorganic materials 0.000 description 1
- 229910007289 Li2S—SiS2—LiI Inorganic materials 0.000 description 1
- 229910007306 Li2S—SiS2—P2S5LiI Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910011281 LiCoPO 4 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910015645 LiMn Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910014689 LiMnO Inorganic materials 0.000 description 1
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910013086 LiNiPO Inorganic materials 0.000 description 1
- 229910014211 My O Inorganic materials 0.000 description 1
- NIPNSKYNPDTRPC-UHFFFAOYSA-N N-[2-oxo-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 NIPNSKYNPDTRPC-UHFFFAOYSA-N 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 229910020346 SiS 2 Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- YFRNYWVKHCQRPE-UHFFFAOYSA-N buta-1,3-diene;prop-2-enoic acid Chemical compound C=CC=C.OC(=O)C=C YFRNYWVKHCQRPE-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Inorganic materials [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 1
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 239000005077 polysulfide Substances 0.000 description 1
- 150000008117 polysulfides Polymers 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 235000002639 sodium chloride Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000011701 zinc 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
- H01M10/0562—Solid materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/045—Cells or batteries with folded plate-like electrodes
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/049—Processes for forming or storing electrodes in the battery container
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0438—Processes of manufacture in general by electrochemical processing
- H01M4/044—Activating, forming or electrochemical attack of the supporting material
- H01M4/0445—Forming after manufacture of the electrode, e.g. first charge, cycling
- H01M4/0447—Forming after manufacture of the electrode, e.g. first charge, cycling of complete cells or cells stacks
-
- 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
-
- 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
- H01M4/134—Electrodes based on metals, Si or alloys
-
- 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
- H01M4/137—Electrodes based on electro-active polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
- H01M4/381—Alkaline or alkaline earth metals elements
- H01M4/382—Lithium
-
- 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
- H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
- H01M4/621—Binders
- H01M4/622—Binders being polymers
- H01M4/623—Binders being polymers fluorinated polymers
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/668—Composites of electroconductive material and synthetic resins
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/411—Organic material
- H01M50/414—Synthetic resins, e.g. thermoplastics or thermosetting resins
- H01M50/426—Fluorocarbon polymers
-
- 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
- H01M2004/021—Physical characteristics, e.g. porosity, surface area
-
- 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
- H01M2004/027—Negative electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0068—Solid electrolytes inorganic
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Description
図1は、本開示の全固体電池の一例を示す概略断面図である。図1(a)に示される全固体電池10は、負極集電体5、樹脂を含有する多孔体層6、固体電解質層3、正極活物質層1、および、正極集電体4をこの順に有する。なお、本開示においては、負極集電体5および多孔体層6を、負極と称する場合がある。同様に、正極活物質層1および正極集電体4を、正極と称する場合がある。また、全固体電池10は、負極反応として金属Liの析出−溶解反応を利用した電池であり、エネルギー密度が高いという利点を有する。また、図1(b)に示すように、全固体電池10では、充電により、固体電解質層3および多孔体層6の間に、析出Liである負極活物質層2が生じる。
以下、本開示の全固体電池について、構成ごとに説明する。
本開示における負極は、負極集電体および多孔体層を有する。なお、負極は、多孔体層を基準として、負極集電体とは反対側に、析出Liである負極活物質層をさらに有していても良い。
本開示における固体電解質層は、少なくとも固体電解質を含有する。固体電解質は、無機固体電解質であることが好ましい。無機固体電解質としては、例えば、硫化物固体電解質、酸化物固体電解質、窒化物固体電解質が挙げられる。
本開示における正極は、正極集電体および正極活物質層を有する。正極活物質層は、正極活物質を少なくとも含有し、必要に応じて、固体電解質、導電化材および結着材の少なくとも一つを含有していても良い。
本開示の全固体電池は、負極集電体、多孔体層、固体電解質層、正極活物質層、および、正極集電体をこの順に有する。図1(a)に示すように、固体電解質層3および多孔体層6の間に、負極活物質層を有しなくても良い。特に、固体電解質層3および多孔体層6は、直接接触していることが好ましい。一方、図1(b)に示すように、全固体電池10は、固体電解質層3および多孔体層6の間に、析出Liである負極活物質層2を有していても良い。
図4は、本開示の負極の一例を示す概略断面図である。図4に示される負極20は、負極反応として金属Liの析出−溶解反応を利用した全固体電池に用いられる負極であって、負極集電体5、および、樹脂を含有する多孔体層6をこの順に有する。
電子伝導性材料として、ケッチェンブラック(KB)を準備し、樹脂として、ポリフッ化ビニリデン(PVDF)を準備した。次に、KBおよびPVDFを、KB:PVDF=75:25の重量比で混合し、負極集電体(Cu箔)上に塗工し、厚さ3μmの多孔体層を形成した。
多孔体層の厚さを5μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層の厚さを11μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層における樹脂含有量を50重量%に変更し、多孔体層の厚さを2μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層における樹脂含有量を89重量%に変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層の厚さを9μmに変更したこと以外は、実施例3−1と同様にして評価用セルを得た。
多孔体層の厚さを14μmに変更したこと以外は、実施例3−1と同様にして評価用セルを得た。
多孔体層における樹脂含有量を95重量%に変更し、多孔体層の厚さを2μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層の厚さを5μmに変更したこと以外は、実施例4−1と同様にして評価用セルを得た。
多孔体層の厚さを9μmに変更したこと以外は、実施例4−1と同様にして評価用セルを得た。
電子伝導性材料を用いず、多孔体層の厚さを1μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層における樹脂含有量を15重量%に変更し、多孔体層の厚さを22μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
多孔体層の厚さを2μmに変更したこと以外は、比較例1と同様にして評価用セルを得た。
電子伝導性材料を用いず、多孔体層の厚さを4μmに変更したこと以外は、実施例1−1と同様にして評価用セルを得た。
負極集電体としてSUS箔を用い、多孔体層を設けなかったこと以外は、実施例1−1と同様にして評価用セルを得た。
(電気抵抗測定)
実施例1−1〜実施例5および比較例1〜3における多孔体層に対して、電気抵抗測定を行った。具体的には、負極集電体(Cu箔)および多孔体層を有する積層体をSUSピンで挟み、0.2Nの拘束圧で拘束したサンプルを作製し、電気抵抗を測定した。
実施例1−1〜実施例5および比較例1〜3における多孔体層に対して、空隙率測定を行った。まず、多孔体層の厚さおよび重量を測定した。次に、(多孔体層の厚さ)×(多孔体層の面積(1cm2))により、見かけの体積(V1)を求めた。次に、(多孔体層の重量)×(各材料の質量比)により、各材料の重量を求めた。次に、(各材料の重量)/(各材料の真密度)により、各材料の真体積を求めた。次に、各材料の真体積を合計し、多孔体層の真体積(V2)を求めた。次に、(V1−V2)/V1×100より、多孔体層の空隙率(%)を求めた。その結果を表1に示す。
実施例1−1〜実施例5、比較例1〜3および参考例1で得られた評価用セルに対して、充放電試験を行った。まず、60℃の恒温槽に評価用セルを3時間静置し、セル温度を均一化した。次に、評価用セルを、電流密度8.7mA/cm2(2C相当)の一定電流で充電を開始し、充電容量4.35mAh/cm2到達時点で休止した。10分後に、電流密度0.435mA/cm2(0.1C相当)の一定電流で放電を開始し、電圧3.0V到達時点で終了した。これにより、充電後OCVおよび放電容量を求めた。その結果を表1に示す。
実施例4−1で得られた評価用セル(充電後)の断面を、SEM−EDX(走査型電子顕微鏡−エネルギー分散型X線分光法)により観察した。その結果を図5に示す。なお、図5(b)は、図5(a)の一部を拡大した拡大図である。図5に示すように、実施例4−1では、固体電解質層および多孔体層の間に析出したLiの厚さが均一であった。特に、図5(b)に示すように、析出Liは、一部疎な部分を含むものの、密な層を形成していることが確認された。このように、本開示においては、所定の多孔体層を設けることで、固体電解質層および多孔体層の界面において、均一に金属Liが析出することが確認された。
2 … 負極活物質層
3 … 固体電解質層
4 … 正極集電体
5 … 負極集電体
6 … 多孔体層
10 … 全固体電池
20 … 負極
Claims (8)
- 負極反応として金属Liの析出−溶解反応を利用した全固体電池であって、
負極集電体、樹脂を含有する多孔体層、固体電解質層、正極活物質層、および、正極集電体をこの順に有し、
前記多孔体層の電気抵抗が、1Ω以上690Ω以下であり、
前記多孔体層の厚さが、1μm以上14μm以下である、全固体電池。 - 前記樹脂が、フッ素系樹脂である、請求項1に記載の全固体電池。
- 前記フッ素系樹脂が、ポリフッ化ビニリデン(PVDF)である、請求項2に記載の全固体電池。
- 前記多孔体層における前記樹脂の含有量が、25重量%以上であり、
前記多孔体層の厚さが、1μm以上4μm以下である、請求項1から請求項3までのいずれかの請求項に記載の全固体電池。 - 前記多孔体層の電気抵抗が、153Ω以下である、請求項1から請求項4までのいずれかの請求項に記載の全固体電池。
- 前記多孔体層が、電子伝導性材料を含有する、請求項1から請求項5までのいずれかの請求項に記載の全固体電池。
- 前記多孔体層が、前記樹脂のみを含有する、請求項1から請求項5までのいずれかの請求項に記載の全固体電池。
- 負極反応として金属Liの析出−溶解反応を利用した全固体電池に用いられる負極であって、
負極集電体、および、樹脂を含有する多孔体層をこの順に有し、
前記多孔体層の電気抵抗が、1Ω以上690Ω以下であり、
前記多孔体層の厚さが、1μm以上14μm以下である、負極。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017155221A JP6838521B2 (ja) | 2017-08-10 | 2017-08-10 | 全固体電池および負極 |
CN201810810080.5A CN109390552B (zh) | 2017-08-10 | 2018-07-23 | 全固态电池和负极 |
US16/042,187 US11888110B2 (en) | 2017-08-10 | 2018-07-23 | All solid state battery and anode |
EP18185246.8A EP3442059B1 (en) | 2017-08-10 | 2018-07-24 | All solid state battery and anode |
KR1020180087754A KR102088396B1 (ko) | 2017-08-10 | 2018-07-27 | 전고체전지 및 부극 |
RU2018128145A RU2684168C1 (ru) | 2017-08-10 | 2018-08-01 | Полностью твердотельный аккумулятор и анод |
BR102018015875-9A BR102018015875B1 (pt) | 2017-08-10 | 2018-08-02 | Bateria de estado totalmente sólido e anodo para ser usado em uma bateria de estado totalmente sólido |
US18/389,946 US20240120528A1 (en) | 2017-08-10 | 2023-12-20 | All solid state battery and anode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2017155221A JP6838521B2 (ja) | 2017-08-10 | 2017-08-10 | 全固体電池および負極 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019036391A JP2019036391A (ja) | 2019-03-07 |
JP6838521B2 true JP6838521B2 (ja) | 2021-03-03 |
Family
ID=63041902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017155221A Active JP6838521B2 (ja) | 2017-08-10 | 2017-08-10 | 全固体電池および負極 |
Country Status (7)
Country | Link |
---|---|
US (2) | US11888110B2 (ja) |
EP (1) | EP3442059B1 (ja) |
JP (1) | JP6838521B2 (ja) |
KR (1) | KR102088396B1 (ja) |
CN (1) | CN109390552B (ja) |
BR (1) | BR102018015875B1 (ja) |
RU (1) | RU2684168C1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102446619B1 (ko) * | 2019-03-19 | 2022-09-22 | 주식회사 엘지에너지솔루션 | 전고체 전지용 전해질막 및 이를 제조하는 방법 |
JP7331443B2 (ja) | 2019-04-26 | 2023-08-23 | トヨタ自動車株式会社 | 全固体電池 |
JP7207248B2 (ja) * | 2019-09-24 | 2023-01-18 | トヨタ自動車株式会社 | 全固体電池 |
JP7259677B2 (ja) * | 2019-09-24 | 2023-04-18 | トヨタ自動車株式会社 | 全固体電池 |
KR20210056504A (ko) * | 2019-11-08 | 2021-05-20 | 삼성에스디아이 주식회사 | 전고체 이차전지용 음극층, 이를 포함하는 전고체 이차전지 및 그 제조방법 |
KR20210056779A (ko) | 2019-11-11 | 2021-05-20 | 삼성에스디아이 주식회사 | 전고체 이차전지 |
JP7318511B2 (ja) * | 2019-12-03 | 2023-08-01 | トヨタ自動車株式会社 | 全固体電池 |
JP7304278B2 (ja) * | 2019-12-04 | 2023-07-06 | 株式会社Soken | 全固体電池およびその製造方法 |
JP2021136215A (ja) * | 2020-02-28 | 2021-09-13 | 日産自動車株式会社 | リチウムイオン二次電池 |
KR20210111949A (ko) * | 2020-03-03 | 2021-09-14 | 삼성에스디아이 주식회사 | 양극 및 이를 포함하는 전고체 이차전지, 및 전고체 이차전지의 제조 방법 |
JP7244456B2 (ja) * | 2020-04-28 | 2023-03-22 | プライムアースEvエナジー株式会社 | 二次電池の状態判定方法及び二次電池の状態判定装置 |
KR102634217B1 (ko) * | 2020-09-23 | 2024-02-07 | 도요타 지도샤(주) | 전고체 전지의 제조 방법 |
JP7334759B2 (ja) * | 2021-04-27 | 2023-08-29 | トヨタ自動車株式会社 | 全固体電池 |
TWI762418B (zh) | 2021-09-03 | 2022-04-21 | 輝能科技股份有限公司 | 鋰金屬極板 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10302794A (ja) | 1997-04-30 | 1998-11-13 | Matsushita Electric Ind Co Ltd | リチウム二次電池 |
US7476467B2 (en) * | 2004-03-29 | 2009-01-13 | Lg Chem, Ltd. | Lithium secondary battery with high power |
US9893337B2 (en) * | 2008-02-13 | 2018-02-13 | Seeo, Inc. | Multi-phase electrolyte lithium batteries |
JP5207206B2 (ja) * | 2008-03-07 | 2013-06-12 | 住友電気工業株式会社 | 全固体リチウム二次電池の製造方法 |
JP4948510B2 (ja) * | 2008-12-02 | 2012-06-06 | トヨタ自動車株式会社 | 全固体電池 |
KR101484433B1 (ko) * | 2009-03-12 | 2015-01-19 | 닛산 지도우샤 가부시키가이샤 | 쌍극형 전지용 집전체 및 쌍극형 전지 |
JP6069821B2 (ja) * | 2011-09-28 | 2017-02-01 | ソニー株式会社 | リチウムイオン二次電池 |
JP2015092433A (ja) * | 2012-02-24 | 2015-05-14 | 住友電気工業株式会社 | 全固体リチウム二次電池 |
CN104221195A (zh) * | 2012-04-04 | 2014-12-17 | 株式会社Uacj | 集电体、电极结构体、非水电解质电池及蓄电零部件 |
KR101920714B1 (ko) * | 2012-05-16 | 2018-11-21 | 삼성전자주식회사 | 리튬 전지용 음극 및 이를 포함하는 리튬 전지 |
CN106575795A (zh) * | 2014-09-29 | 2017-04-19 | 松下知识产权经营株式会社 | 层压电池 |
JP6432113B2 (ja) | 2014-11-18 | 2018-12-05 | 三星電子株式会社Samsung Electronics Co.,Ltd. | リチウム二次電池 |
US20160240831A1 (en) * | 2015-02-12 | 2016-08-18 | Apple Inc. | Dendrite-resistant battery |
JP2016219130A (ja) * | 2015-05-15 | 2016-12-22 | セイコーエプソン株式会社 | 固体電解質電池、電極複合体、複合固体電解質および固体電解質電池の製造方法 |
JP2017084515A (ja) * | 2015-10-26 | 2017-05-18 | セイコーエプソン株式会社 | 負極層、および全固体リチウムイオン二次電池 |
WO2017095151A1 (ko) * | 2015-11-30 | 2017-06-08 | 주식회사 엘지화학 | 이차전지용 양극 및 이를 포함하는 이차전지 |
JP2017130283A (ja) * | 2016-01-18 | 2017-07-27 | トヨタ自動車株式会社 | 全固体電池 |
CN105845891B (zh) | 2016-05-13 | 2019-06-18 | 清华大学 | 一种具有双层结构的金属锂负极 |
CN205900693U (zh) * | 2016-07-14 | 2017-01-18 | 深圳市盛邦科技有限公司 | 一种负极片及全固态电池 |
CN109390622B (zh) * | 2017-08-10 | 2022-03-22 | 丰田自动车株式会社 | 锂固体电池 |
JP6946836B2 (ja) | 2017-08-10 | 2021-10-13 | トヨタ自動車株式会社 | リチウム固体電池、およびリチウム固体電池の製造方法 |
-
2017
- 2017-08-10 JP JP2017155221A patent/JP6838521B2/ja active Active
-
2018
- 2018-07-23 CN CN201810810080.5A patent/CN109390552B/zh active Active
- 2018-07-23 US US16/042,187 patent/US11888110B2/en active Active
- 2018-07-24 EP EP18185246.8A patent/EP3442059B1/en active Active
- 2018-07-27 KR KR1020180087754A patent/KR102088396B1/ko active IP Right Grant
- 2018-08-01 RU RU2018128145A patent/RU2684168C1/ru active
- 2018-08-02 BR BR102018015875-9A patent/BR102018015875B1/pt active IP Right Grant
-
2023
- 2023-12-20 US US18/389,946 patent/US20240120528A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JP2019036391A (ja) | 2019-03-07 |
CN109390552A (zh) | 2019-02-26 |
BR102018015875B1 (pt) | 2024-03-12 |
RU2684168C1 (ru) | 2019-04-04 |
CN109390552B (zh) | 2021-10-29 |
BR102018015875A2 (pt) | 2019-03-19 |
US20240120528A1 (en) | 2024-04-11 |
US20190051925A1 (en) | 2019-02-14 |
US11888110B2 (en) | 2024-01-30 |
EP3442059B1 (en) | 2022-04-27 |
KR20190017649A (ko) | 2019-02-20 |
KR102088396B1 (ko) | 2020-03-12 |
EP3442059A1 (en) | 2019-02-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6838521B2 (ja) | 全固体電池および負極 | |
JP7028100B2 (ja) | リチウム固体電池 | |
JP6946836B2 (ja) | リチウム固体電池、およびリチウム固体電池の製造方法 | |
KR102154143B1 (ko) | 이차 전지의 충전 방법 | |
CN108807828B (zh) | 层叠电池 | |
KR20180129638A (ko) | 전극 집전체 및 전고체 전지 | |
CN108808112B (zh) | 层叠电池 | |
CN108808097B (zh) | 层叠电池 | |
US20150048838A1 (en) | Apparatus and method for inspecting all-solid battery | |
CN114583168A (zh) | 被覆型正极活性物质、被覆型正极活性物质的制造方法和全固体电池 | |
KR20210007149A (ko) | 전고체 전지용 복합 음극 | |
KR20200128256A (ko) | 전고체 전지용 복합 음극 및 이의 제조방법 | |
JP7009772B2 (ja) | 積層電池および積層電池の製造方法 | |
JP6965737B2 (ja) | 電極集電体および全固体電池 | |
CN114613939B (zh) | 全固体电池 | |
JP7347454B2 (ja) | 負極活物質層 | |
JP7248043B2 (ja) | 全固体電池 | |
JP7331873B2 (ja) | 全固体電池 | |
Araki et al. | Thickness Dependence of Resistance Components of a LiNixCoyMn1-x-yO2-Based Positive Electrode for Lithium Ion Batteries | |
JP2022088978A (ja) | 全固体電池 | |
JP2022088979A (ja) | 全固体電池 | |
JP2022124676A (ja) | 全固体電池 | |
JP2021197316A (ja) | 全固体電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190719 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20200219 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20200407 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20201020 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20201214 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20210112 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20210125 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 6838521 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |