WO2016013224A1 - 固体電解質組成物、その製造方法、固体電解質含有層の製造方法、電解質層及び電池 - Google Patents
固体電解質組成物、その製造方法、固体電解質含有層の製造方法、電解質層及び電池 Download PDFInfo
- Publication number
- WO2016013224A1 WO2016013224A1 PCT/JP2015/003700 JP2015003700W WO2016013224A1 WO 2016013224 A1 WO2016013224 A1 WO 2016013224A1 JP 2015003700 W JP2015003700 W JP 2015003700W WO 2016013224 A1 WO2016013224 A1 WO 2016013224A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- solid electrolyte
- solvent
- composition according
- layer
- electrolyte composition
- Prior art date
Links
Images
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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/22—Alkali metal sulfides or polysulfides
- C01B17/36—Purification
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
- H01B1/10—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances sulfides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
-
- 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
- H01M10/05—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
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0569—Liquid materials characterised by the solvents
-
- 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
-
- 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
-
- 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
-
- 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
- H01M2300/0088—Composites
- H01M2300/0091—Composites in the form of mixtures
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a solid electrolyte composition, a method for producing the same, a method for producing a solid electrolyte-containing layer, an electrolyte layer, and a battery.
- a solid electrolyte layer may be formed by applying a solid electrolyte in a slurry composition (Patent Documents 1 to 7).
- Patent Documents 1 to 7 a solid electrolyte in a slurry composition
- JP 2010-1113820 A JP 2012-151096 A JP 2012-204114 A JP2013-062228A JP 2012-212552 A JP 2012-199003 A JP 2012-252833 A
- An object of the present invention is to provide a solid electrolyte composition capable of suppressing a decrease in ionic conductivity of the solid electrolyte.
- a solid electrolyte composition comprising a solid electrolyte containing Li and a solvent represented by the following formula (1).
- R 1 — (C ⁇ O) —R 2 (1) (In formula (1), R 1 and R 2 are each a hydrocarbon group having 2 or more carbon atoms.) 2.
- the solid electrolyte composition according to any one of 1 to 10, wherein a weight ratio of the solid electrolyte to the solvent is solid electrolyte: solvent 1: 0.3 to 15.0.
- 12 The solid electrolyte composition according to any one of 1 to 11, further comprising a binder. 13 13.
- R 1 — (C ⁇ O) —R 2 (1) (In formula (1), R 1 and R 2 are each a hydrocarbon group having 2 or more carbon atoms.) 15. Furthermore, the manufacturing method of the solid electrolyte composition of 14 which mixes a binder. 16. 16.
- R 1 — (C ⁇ O) —R 2 (1) In formula (1), R 1 and R 2 are each a hydrocarbon group having 2 or more carbon atoms.) 19.
- a battery comprising an electrolyte layer, a positive electrode layer, and a negative electrode layer
- a battery in which at least one of the electrolyte layer, the positive electrode layer, and the negative electrode layer includes a solid electrolyte containing Li and a solvent represented by the following formula (1).
- R 1 — (C ⁇ O) —R 2 (1) In formula (1), R 1 and R 2 are each a hydrocarbon group having 2 or more carbon atoms.
- FIG. 1 It is a figure which shows the solid electrolyte manufacturing apparatus used in manufacture example 4.
- FIG. 1 It is a figure which shows the solid electrolyte manufacturing apparatus used in manufacture example 4.
- the solid electrolyte composition of the present invention includes a solid electrolyte containing Li and a solvent represented by the following formula (1).
- R 1 — (C ⁇ O) —R 2 (1) (In formula (1), R 1 and R 2 are each a hydrocarbon group having 2 or more carbon atoms.)
- the solid electrolyte composition of the present invention does not decrease the ionic conductivity of the solid electrolyte or can suppress the decrease small. Moreover, the composition of this invention is excellent in slurry retention property and slurry coating property.
- each component will be described.
- Solid electrolyte The solid electrolyte used in the present invention is preferably a sulfide-based solid electrolyte containing Li, P and S.
- This sulfide-based solid electrolyte may contain other elements and other components in addition to Li, P and S, or may be composed of only Li, P and S.
- the other element include a halogen element, and one or more kinds of halogen elements may be used.
- the halogen element include F, Cl, Br, I and At, and Br and I are preferable.
- a sulfide-based solid electrolyte using at least Li 2 S as a raw material is more preferable.
- a sulfide-based solid electrolyte using Li 2 S as a raw material a sulfide-based solid electrolyte using Li 2 S and other sulfides as raw materials is more preferable.
- those having a molar ratio of Li 2 S and other sulfides of 50:50 to 95: 5 are particularly preferable.
- a sulfide-based solid electrolyte using at least Li 2 S and P 2 S 5 as raw materials is preferable.
- Li 2 S: P 2 S 5 68: 32 to 82:18
- Li 2 S: P 2 S 5 72: 28 to 78:22.
- a sulfide-based solid electrolyte using Li 2 S and P 2 S 5 as raw materials is preferable.
- Li 2 S: P 2 S 5 68: 32 to 82:18
- Li 2 S: P 2 S 5 72: 28 to 78:22.
- the solid electrolyte may be produced using Li 2 S and P 2 S 5 as well as a halide as a raw material.
- the halide include LiI, LiBr, LiCl and the like.
- a solid electrolyte using a halide as a raw material specifically, a sulfide-based solid electrolyte containing Li, P, S and I, a sulfide-based solid electrolyte containing Li, P, S and Br, Li, P, Examples thereof include sulfide-based solid electrolytes containing S and Cl.
- solid electrolyte examples include Li 2 SP—S 2 S 5 , LiI—Li 2 SP—S 2 S 5 , LiBr—Li 2 SP—S 2 S 5 , LiCl—Li 2 SP—S 2 S 5. , Li 3 PO 4 —Li 2 S—Si 2 S, and other sulfide-based solid electrolytes.
- Solid electrolytes include: MM (mechanical milling) method, melting method, method of contacting a raw material in a hydrocarbon solvent (International Publication No. 2009/047977), means for contacting the raw material in a hydrocarbon solvent and pulverizing synthesis means And a method of performing a pulverization synthesis step after a step of contacting a raw material in a solvent (International Publication No. 2013/042371), and other production methods.
- the solid electrolyte may be amorphous (glass) or crystalline (glass ceramic).
- the solvent (ketone compound) represented by the formula (1) has no adverse effect on the solid electrolyte and does not lower the ion conductivity of the solid electrolyte or minimizes the decrease. Moreover, it can be set as the composition excellent in slurry retention property and slurry application
- the excellent slurry application property means that the slurry (solid electrolyte) can be applied thinly and uniformly, and the coating film is less likely to have holes or defects.
- “Slurry retention is excellent” means that the constituent raw materials of the composition are not separated when the slurry is allowed to stand, and the slurry state is maintained.
- the above solvent serves as a dispersion medium for the solid electrolyte.
- the solid electrolyte may be partially dissolved in the above solvent, or may not be dissolved.
- the solid electrolyte is preferably not dissolved in the solvent.
- the above-mentioned solvent has an appropriate affinity with the binder described later, and partly dissolves the binder and has a good slurry state retention. Further, the dispersibility is good, and even when a binder is added, the slurry coating property is excellent.
- the hydrocarbon group having 2 or more carbon atoms of R 1 and R 2 is preferably an aliphatic hydrocarbon group, more preferably a saturated aliphatic hydrocarbon group.
- the saturated aliphatic hydrocarbon group is preferably a chain saturated aliphatic hydrocarbon group, and may be either a linear saturated aliphatic hydrocarbon group or a branched saturated aliphatic hydrocarbon group.
- the number of carbon atoms of R 1 and R 2 is preferably 5 or less, more preferably 3 or less.
- R 1 and R 2 may be the same or different, but are preferably the same.
- the solvent represented by the formula (1) examples include 3-pentanone (CH 3 —CH 2 — (C ⁇ O) —CH 2 —CH 3 ), 3-hexanone (CH 3 —CH 2 —). (C ⁇ O) —CH 2 —CH 2 —CH 3 ), 4-heptanone (CH 3 —CH 2 —CH 2 — (C ⁇ O) —CH 2 —CH 2 —CH 3 ), diisopropyl ketone ((CH 3 ) 2 —CH— (C ⁇ O) —CH— (CH 3 ) 2 ) and the like, and 3-pentanone, 4-heptanone, and diisopropyl ketone are particularly preferable.
- Binder The solid electrolyte composition of the present invention may further contain a binder.
- a binder a copolymer having a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2) is preferable.
- the repeating unit represented by (1) is a polymerized unit (VDF) based on vinylidene fluoride
- the repeating unit represented by (2) is a polymerized unit (HFP) based on hexafluoropropylene.
- n and m can be obtained as follows.
- m 100 ⁇ (m1 ⁇ m2) / (m1 ⁇ m2 + n1 ⁇ n2)
- n 100 ⁇ (n1 ⁇ n2) / (m1 ⁇ m2 + n1 ⁇ n2)
- m1 mol% of the segment (repeating unit) represented by the formula (1) measured by nuclear magnetic resonance measurement (NMR)
- n1 is a formula (measured by nuclear magnetic resonance measurement (NMR)) ( 2) mol% of the segment represented by 2)
- m2 is the molecular weight of the segment represented by formula (1)
- n2 is the molecular weight of the segment represented by formula (2).
- what is measured by NMR is not the mol% of each segment in one molecule but the mol% of each segment with respect to the whole binder.
- the number average molecular weight of the binder molecule is preferably 1,000 to 500,000, more preferably 1,000 to 100,000, and still more preferably 5,000 to 50,000.
- the number average molecular weight of the binder molecule is 1,000 to 100,000, the solubility in a solvent is improved and the amount of the solvent can be reduced.
- the number average molecular weight of the binder molecule is 5,000 to 50,000, the tackiness is increased, so that the dispersion stability and coating property of the composition of the present invention are improved, and for example, a positive electrode layer can be easily produced. .
- binders include fluorine-containing resins such as fluorine rubber; thermoplastic resins such as polypropylene and polyethylene; ethylene-propylene-dienemer (EPDM), sulfonated EPDM, and natural butyl rubber (NBR). It can be used as a mixture.
- fluorine-containing resins such as fluorine rubber
- thermoplastic resins such as polypropylene and polyethylene
- EPDM ethylene-propylene-dienemer
- NBR natural butyl rubber
- SBR styrene butadiene rubber
- the weight ratio of the binder satisfies the following formula. 0.5 ⁇ 100 ⁇ x / y ⁇ 50 x: weight of binder in composition y: weight of binder in composition + weight of solids other than binder
- composition of the present invention may contain a positive electrode active material or a negative electrode active material.
- the positive electrode active material is a material capable of inserting and removing lithium ions, and those known as a positive electrode active material in the battery field can be used.
- titanium sulfide (TiS 2 ), molybdenum sulfide (MoS 2 ), iron sulfide (FeS, FeS 2 ), copper sulfide (CuS), nickel sulfide (Ni 3 S 2 ), etc. can be used.
- TiS 2 is used.
- oxide-based positive electrode active material examples include bismuth oxide (Bi 2 O 3 ), bismuth leadate (Bi 2 Pb 2 O 5 ), copper oxide (CuO), vanadium oxide (V 6 O 13 ), and lithium cobalt oxide (LiCoO). 2 ), lithium nickelate (LiNiO 2 ), lithium manganate (LiMnO 2 ) and the like can be used. It is also possible to use a mixture of these. Preferably, lithium cobaltate can be used.
- Li x CoO 2 , Li x NiO 2 , Li x Mn 2 O 4 , Li x FePO 4 , LixCoPO 4 , Li x Mn 1/3 Ni 1/3 Co 1/3 O 2 , Li x Mn 1.5 Ni 0.5 O 2 or the like can also be used (X is 0.1 to 0.9).
- niobium selenide NbSe 3
- organic disulfide compounds shown below carbon sulfide compounds shown below, sulfur, lithium sulfide, indium metal, and the like
- X is a substituent
- n and m are each independently an integer of 1 to 2
- p and q are each independently an integer of 1 to 4.
- Z is —S— or —NH—
- n is an integer of 2 to 300 repetitions.
- n and m are each an integer of 1 or more.
- a conductive additive may be further contained.
- the conductive auxiliary agent only needs to have conductivity, and its electronic conductivity is preferably 1 ⁇ 10 3 S / cm or more, more preferably 1 ⁇ 10 5 S / cm or more.
- Examples of the conductive aid include substances selected from carbon materials, metal powders and metal compounds, and mixtures thereof.
- conductive aids are preferably carbon materials, nickel, copper, aluminum, indium, silver, cobalt, magnesium, lithium, chromium, gold, ruthenium, platinum, beryllium, iridium, molybdenum, niobium, osnium, rhodium
- examples include substances containing at least one element selected from the group consisting of tungsten and zinc, and more preferably carbon simple substance having high conductivity, carbon material other than carbon simple substance; nickel, copper, silver, cobalt, magnesium, lithium, A simple metal, mixture or compound containing ruthenium, gold, platinum, niobium, osnium or rhodium.
- carbon materials include carbon blacks such as ketjen black, acetylene black, denka black, thermal black, and channel black; graphite, carbon fiber, activated carbon, and the like. These may be used alone or in combination of two or more. Is possible. Among these, acetylene black, denka black, and ketjen black having high electron conductivity are preferable.
- the negative electrode active material a material capable of inserting and desorbing lithium ions, and a material known as a negative electrode active material in the battery field can be used.
- carbon materials specifically artificial graphite, graphite carbon fiber, resin-fired carbon, pyrolytic vapor-grown carbon, coke, mesocarbon microbeads (MCMB), furfuryl alcohol resin-fired carbon, polyacene, pitch-based carbon
- fibers vapor-grown carbon fibers, natural graphite, and non-graphitizable carbon. These may be used alone or as a mixture.
- it is artificial graphite.
- An alloy combined with a metal itself such as metallic lithium, metallic indium, metallic aluminum, metallic silicon, or another element or compound can be used as the negative electrode material.
- a conductive aid may be included.
- the same conductive aids as described above can be used.
- the composition of this invention can contain said positive electrode active material, a negative electrode active material, a conductive support agent, a binder, etc. in the range which does not impair the effect of this invention.
- the composition of the present invention may contain, for example, 90% by weight or more, 95% by weight or more, or 98% by weight or more of the solid electrolyte and the solvent.
- the composition of this invention may be 100 weight% in total of the said solid electrolyte and a solvent.
- the total amount of the solid electrolyte, the solvent and the binder may be 90% by weight or more, 95% by weight or more, and 98% by weight. % Or more may be included.
- the composition of the present invention may be 100% by weight in total of the solid electrolyte, the solvent, and the binder.
- the composition of the present invention contains the solid electrolyte, the solvent, the binder, and the electrode active material (positive electrode active material or negative electrode active material), the solid electrolyte, the solvent, the binder, and the electrode active material in total. It may contain 90% by weight or more, may contain 95% by weight or more, and may contain 98% by weight or more.
- the composition of the present invention may be 100% by weight in total of the solid electrolyte, the solvent, the binder, and the electrode active material.
- composition of the present invention contains the solid electrolyte, the solvent, the binder, the electrode active material (positive electrode active material or negative electrode active material), and a conductive additive
- the electrode active material and the conductive additive may be contained in a total amount of 90% by weight or more, 95% by weight or more, or 98% by weight or more.
- the composition of the present invention may be 100% by weight in total of the solid electrolyte, the solvent, the binder, the electrode active material, and the conductive additive.
- Method for producing solid electrolyte composition In the method for producing a solid electrolyte composition of the present invention, the solid electrolyte and the solvent represented by the formula (1) are mixed.
- a mixing method is not particularly limited, and a known method may be used.
- the components such as the solid electrolyte and the conditions such as the amount of the components are the same as described above.
- a solid electrolyte-containing layer can be produced using the solid electrolyte composition of the present invention.
- the solid electrolyte-containing layer may be composed only of the solid electrolyte or may contain other components described above.
- Examples of the solid electrolyte-containing layer of the present invention include a solid electrolyte layer, a positive electrode layer, and a negative electrode layer.
- the solid electrolyte layer of the present invention is a layer that does not contain a positive electrode active material and a negative electrode active material. That is, it contains a solid electrolyte and optionally a binder.
- the thickness of the solid electrolyte layer is preferably 0.01 mm or more and 10 mm or less.
- the positive electrode layer of the present invention is a layer containing the solid electrolyte and the positive electrode active material.
- the positive electrode active material is as described above, and may contain a conductive additive and a binder.
- the conductive assistant and binder are also as described above.
- the thickness of the positive electrode layer is preferably 0.01 mm or more and 10 mm or less.
- the negative electrode layer of the present invention is a layer containing the solid electrolyte and the negative electrode active material.
- the negative electrode active material is as described above, and may contain a conductive additive and a binder.
- the conductive assistant and binder are also as described above.
- the thickness of the negative electrode layer is preferably 0.01 mm or more and 10 mm or less.
- the method for forming the solid electrolyte-containing layer of the present invention is not particularly limited as long as it can be formed into a sheet shape.
- a forming method such as press molding or roll press molding, a sheet forming method using a coating method such as doctor blade or screen printing, and the like can be given. Of these, it is preferable to form a sheet by coating.
- the composition can be applied and dried using a doctor blade or the like, formed into a sheet, and then the solid electrolyte formed into a sheet by pressing or roll pressing can be consolidated.
- a roll press is particularly preferable.
- the pressing pressure is preferably about 30 MPa to 1000 MPa.
- the temperature at that time may be any as long as the material does not decompose or deteriorate, and is usually 300 ° C. or lower. Here, it is better to completely remove the solvent in the solid electrolyte-containing layer, but a trace amount may remain. It is assumed that the solvent in the solid electrolyte-containing layer may be present between the solid electrolyte particles or may be present in the solid electrolyte particles themselves.
- the above-mentioned solid electrolyte-containing layer can be used for a battery, particularly a lithium secondary battery.
- At least one of the positive electrode layer, the electrolyte layer, and the negative electrode layer included in the battery may be the above-described solid electrolyte-containing layer, and any one or two of these layers, or all the layers may include the above-described solid electrolyte. It may be a layer.
- the electrolyte layer of the present invention contains a solid electrolyte containing Li and contains a solvent represented by the above formula (1).
- the electrolyte layer of the present invention is the same as the above-described solid electrolyte-containing layer except that the solvent represented by the formula (1) is essential.
- the battery of the present invention includes an electrolyte layer, a positive electrode layer, and a negative electrode layer, and at least one of the electrolyte layer, the positive electrode layer, and the negative electrode layer includes a solid electrolyte containing Li and a solvent represented by the above formula (1).
- a solid electrolyte containing Li and a solvent represented by the above formula (1) included in the positive electrode layer, the electrolyte layer, and the negative electrode layer.
- at least one layer may be the above-described solid electrolyte-containing layer, and any one or two of these layers, or all the layers include Li and the above formula
- the solvent represented by (1) may be included.
- the electrolyte layer is a layer that does not contain a positive electrode active material and a negative electrode active material. That is, it contains a solid electrolyte and optionally a binder.
- the thickness of the solid electrolyte layer is preferably 0.01 mm or more and 10 mm or less.
- the binder is as described above.
- the positive electrode layer is a layer containing a positive electrode active material.
- the positive electrode active material is as described above, and may contain a conductive additive and a binder.
- the conductive assistant and binder are as described above.
- the thickness of the positive electrode layer is preferably 0.01 mm or more and 10 mm or less.
- the negative electrode layer is a layer containing a negative electrode active material.
- the negative electrode active material is as described above, and may contain a conductive additive and a binder.
- the conductive assistant and binder are as described above.
- the thickness of the negative electrode layer is preferably 0.01 mm or more and 10 mm or less.
- this reaction solution was heated in a nitrogen stream (200 cc / min) to dehydrosulfide a part of the reacted hydrogen sulfide.
- water produced as a by-product due to the reaction between hydrogen sulfide and lithium hydroxide started to evaporate, but this water was condensed by the condenser and extracted out of the system.
- the temperature of the reaction solution rose, but when the temperature reached 180 ° C., the temperature increase was stopped and the temperature was kept constant. After the dehydrosulfurization reaction was completed (about 80 minutes), the reaction was completed to obtain lithium sulfide.
- the mixed powder, 10 zirconia balls having a diameter of 10 mm, and a planetary ball mill (Fritsch: Model No. P-7) are put into an alumina pot and completely sealed, and the alumina pot is filled with nitrogen. It was an atmosphere.
- the planetary ball mill was rotated at a low speed (85 rpm), and lithium sulfide and diphosphorus pentasulfide were sufficiently mixed. Thereafter, the rotational speed of the planetary ball mill was gradually increased to 370 rpm. Mechanical milling was performed for 20 hours at a rotational speed of 370 rpm in a planetary ball mill. As a result of evaluating the mechanically milled white yellow powder by X-ray measurement, it was confirmed that the powder was vitrified (sulfide glass). It was 220 degreeC when the glass transition temperature of this sulfide glass was measured by DSC (differential scanning calorimetry).
- This sulfide glass was heated at 300 ° C. for 2 hours in a nitrogen atmosphere to obtain a sulfide glass ceramic.
- 72 g of the obtained sulfide glass ceramic and 100 g of toluene were stirred at 200 rpm for 2 hours using a planetary ball mill LP-4 manufactured by Ito Seisakusho Co., Ltd. and a 10 mm diameter Zr ball (743 g) to obtain electrolyte particles 1.
- the average particle diameter of the electrolyte particles 1 was 8.8 ⁇ m.
- the ionic conductivity was 6.36 ⁇ 10 ⁇ 4 S / cm.
- electrolyte particles 2 were produced in the same manner as in Production Example 2 except that the heating was not performed at 300 ° C. for 2 hours. It was confirmed that the obtained electrolyte particles 2 were vitrified by X-ray measurement.
- the average particle diameter of the electrolyte particles 2 was 11.2 ⁇ m.
- the ionic conductivity was 1.22 ⁇ 10 ⁇ 4 S / cm.
- the solid was dispersed and stirred in toluene, and there was no moisture separated from toluene. Thereafter, the hydrogen sulfide was switched to nitrogen and circulated at 300 ml / min for 1 hour.
- the solid content was filtered and dried to obtain white powder of lithium sulfide.
- the average particle size was 450 ⁇ m (slurry solution).
- the apparatus shown in FIG. 1 was used.
- the production apparatus 1 includes a pulverizer 10 that synthesizes an ion conductive material by reacting while pulverizing a raw material in a solvent, and a temperature holding tank 20 that keeps the temperature of the raw material constant by contacting the raw material in the solvent.
- the temperature holding tank 20 includes a container 22 and a stirring blade 24. The stirring blade 24 is driven by a motor (M).
- the pulverizer 10 is provided with a heater 30 through which hot water can be passed around the pulverizer 10 in order to keep the interior of the pulverizer 10 at 20 ° C. or higher and 80 ° C. or lower.
- the temperature holding tank 20 is in the oil bath 40 in order to keep the temperature holding tank 20 at 60 ° C. or more and 300 ° C. or less.
- the oil bath 40 heats the raw material and solvent in the container 22 to a predetermined temperature.
- the temperature holding tank 20 is provided with a cooling pipe 26 for cooling and liquefying the vaporized solvent.
- the pulverizer 10 and the temperature holding tank 20 are connected by a first connecting pipe 50 and a second connecting pipe 52.
- the first connecting pipe 50 moves the raw material and solvent in the pulverizer 10 to the temperature holding tank 20, and the second connecting portion 52 moves the raw material and solvent in the temperature holding tank 20 into the pulverizer 10.
- a pump 54 is provided in the second connecting pipe 52 in order to circulate raw materials and the like through the connecting pipes 50 and 52.
- the contents were circulated between the temperature holding tank 20 and the mill 10 at a flow rate of 480 ml / min by the pump 54, and the temperature holding tank was heated to 70 to 80 ° C.
- the mill body was operated under conditions of a peripheral speed of 12 m / s by passing warm water by external circulation so that the liquid temperature could be maintained at 70 ° C.
- the slurry was collected every 2 hours and dried at 150 ° C. to obtain a white-yellow powder slurry (cream).
- the obtained slurry was filtered and air-dried and then dried with a tube heater at 160 ° C. for 2 hours to obtain a solid electrolyte as a powder.
- the recovery rate at this time was 95%, and no deposits were observed in the reactor.
- Example 1 [Preparation of solid electrolyte composition] To 1 g of solid electrolyte 2, 9 g of 4-heptanone as a solvent was added and stirred with a magnetic stirrer for 3 hours, then heated to 150 ° C. and stirred with a magnetic stirrer for 1 hour to prepare a composition.
- Example 2 A composition was prepared and evaluated in the same manner as in Example 1 except that the solvent was changed from 4-heptanone to 3-pentanone. The results are shown in Table 1.
- Comparative Example 1 A composition was prepared and evaluated in the same manner as in Example 1 except that the solvent was changed from 4-heptanone to 2-butanone. The results are shown in Table 1.
- Comparative Example 2 Without preparing the composition, the solid electrolyte 2 was filled in a tablet molding machine, and a pressure of 360 MPa was applied to obtain a molded body. Furthermore, an electrode was formed by applying and drying carbon paste on both surfaces of the molded body, and a molded body for measuring conductivity (diameter of about 10 mm, thickness of about 1 mm) was produced. The ion conductivity of this molded body was measured by the same method as in Example 1. The results are shown in Table 1.
- Example 3 A composition was prepared and evaluated in the same manner as in Example 1 except that the solid electrolyte 2 was replaced with the solid electrolyte 1. The results are shown in Table 2.
- Example 4 A composition was prepared and evaluated in the same manner as in Example 3 except that the solvent was changed from 4-heptanone to 3-pentanone. The results are shown in Table 2.
- Comparative Example 3 A composition was prepared and evaluated in the same manner as in Example 3 except that the solvent was changed from 4-heptanone to 2-butanone. The results are shown in Table 2.
- Comparative Example 4 The composition was not prepared and only the ionic conductivity of the solid electrolyte 1 was measured. The results are shown in Table 2.
- Example 5 A composition was prepared and evaluated in the same manner as in Example 1 except that the solid electrolyte 2 was replaced with the solid electrolyte 3. The results are shown in Table 3.
- Example 6 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to 3-pentanone. The results are shown in Table 3.
- Comparative Example 5 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to 2-butanone. The results are shown in Table 3.
- Comparative Example 6 The composition was not prepared and only the ionic conductivity of the solid electrolyte 3 was measured. The results are shown in Table 3.
- Example 7 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to diisopropyl ketone. The results are shown in Table 3.
- Comparative Example 7 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to triethylamine. However, the ionic conductivity could not be measured.
- Comparative Example 8 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to ⁇ -butyrolactone. However, the ionic conductivity could not be measured.
- Comparative Example 9 A composition was prepared and evaluated in the same manner as in Example 5 except that the solvent was changed from 4-heptanone to 1,4-dioxane. However, the ionic conductivity could not be measured.
- Comparative Example 10 A composition was prepared and evaluated in the same manner as in Example 1 except that the solvent was changed from 4-heptanone to cyclohexanone. However, the ionic conductivity could not be measured.
- Tables 1 to 3 show that the composition of the present invention using a specific solvent does not substantially reduce the ionic conductivity of the solid electrolyte.
- the solid electrolyte composition of the present invention can be used for a solid electrolyte for a lithium secondary battery.
- the lithium secondary battery can be used as a lithium secondary battery used in portable information terminals, portable electronic devices, household small-sized power storage devices, motorcycles powered by motors, electric vehicles, hybrid electric vehicles, and the like.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Secondary Cells (AREA)
- Conductive Materials (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
リチウムイオン二次電池の安全性を確保する方法として、有機系電解液に代えて無機固体電解質を用いた全固体二次電池が研究されている。
1.Liを含む固体電解質、及び下記式(1)で表される溶媒を含む、固体電解質組成物。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
2.R1及びR2が、それぞれ脂肪族炭化水素基である1に記載の固体電解質組成物。
3.R1及びR2が、それぞれ飽和脂肪族炭化水素基である2に記載の固体電解質組成物。
4.R1及びR2が、それぞれ鎖状の飽和脂肪族炭化水素基である3に記載の固体電解質組成物。
5.R1及びR2が同一である1~4のいずれかに記載の固体電解質組成物。
6.R1及びR2が、それぞれ直鎖の飽和脂肪族炭化水素基である4又は5に記載の固体電解質組成物。
7.R1及びR2が、それぞれ炭素数5以下の炭化水素基である1~6のいずれかに記載の固体電解質組成物。
8.R1及びR2が、それぞれ炭素数3以下の炭化水素基である1~7のいずれかに記載の固体電解質組成物。
9.前記固体電解質が、Li、P及びSを含む1~8のいずれかに記載の固体電解質組成物。
10.前記Li、P及びSをLi2SとP2S5に換算した場合、Li2SとP2S5のモル比が、Li2S:P2S5=60:40~82:18である9に記載の固体電解質組成物。
11.前記固体電解質と前記溶媒の重量比が、固体電解質:溶媒=1:0.3~15.0である1~10のいずれかに記載の固体電解質組成物。
12.さらにバインダーを含む1~11のいずれかに記載の固体電解質組成物。
13.前記バインダーが、フッ化ビニリデンに基づく重合単位及びヘキサフルオロプロピレンに基づく重合単位を含む共重合体である12に記載の固体電解質組成物。
14.Liを含む固体電解質、及び下記式(1)で表される溶媒を混合する、固体電解質組成物の製造方法。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
15.さらにバインダーを混合する14に記載の固体電解質組成物の製造方法。
16.前記バインダーがフッ化ビニリデンに基づく重合単位及びヘキサフルオロプロピレンに基づく重合単位を含む共重合体である15に記載の固体電解質組成物の製造方法。
17.1~13のいずれかに記載の固体電解質組成物を用いる、固体電解質含有層の製造方法。
18.Liを含む固体電解質を含む電解質層であって、下記式(1)で表される溶媒を含む電解質層。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
19.電解質層、正極層及び負極層を備える電池であって、
前記電解質層、前記正極層及び前記負極層の少なくとも1層がLiを含む固体電解質と下記式(1)で表される溶媒を含む電池。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
本発明の固体電解質組成物は、Liを含む固体電解質、及び下記式(1)で表される溶媒を含む。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
以下、各成分について説明する。
本発明で用いる固体電解質としては、Li、P及びSを含む硫化物系固体電解質が好ましい。この硫化物系固体電解質はLi、P及びSの他に、他の元素や他の成分を含んでもよいし、Li、P及びSのみからなってもよい。
他の元素としては、ハロゲン元素を挙げることができ、1種又は2種以上のハロゲン元素を用いてもよい。ハロゲン元素としては、F,Cl,Br,I及びAtを挙げることができ、Br,Iが好ましい。
少なくともLi2SとP2S5を原料とする硫化物系固体電解質としては、原料として用いるLi2SとP2S5のモル比がLi2S:P2S5=60:40~82:18となる硫化物系固体電解質が好ましく、より好ましくは、Li2SとP2S5のモル比がLi2S:P2S5=65:35~82:18である硫化物系固体電解質であり、例えば、Li2S:P2S5=68:32~82:18、Li2S:P2S5=72:28~78:22である。
Li2SとP2S5を原料とする硫化物系固体電解質としては、原料として用いるLi2SとP2S5のモル比がLi2S:P2S5=60:40~82:18となる硫化物系固体電解質が好ましく、より好ましくは、Li2SとP2S5のモル比がLi2S:P2S5=65:35~82:18である。即ち、硫化物系固体電解質に含まれるLi、P及びSを、Li2SとP2S5の比に換算した場合に、モル比がLi2S:P2S5=60:40~82:18となる硫化物系固体電解質が好ましく、より好ましくは、Li2SとP2S5のモル比がLi2S:P2S5=65:35~82:18である硫化物系固体電解質であり、例えば、Li2S:P2S5=68:32~82:18、Li2S:P2S5=72:28~78:22である。
また、上記の固体電解質は非晶質(ガラス)であっても結晶質(ガラスセラミックス)であってもよい。
式(1)で表される溶媒(ケトン化合物)は、固体電解質への悪影響がなく、固体電解質のイオン伝導度を低下させないか、低下を最小限にとどめる。また、この溶媒を用いることにより、スラリー保持性及びスラリー塗布性に優れる組成物とすることができる。
スラリー塗布性に優れるとは、スラリー(固体電解質)を薄く均一に塗布することができ、塗布膜に穴や欠損が生じにくいことを言う。
スラリー保持性に優れるとは、スラリーを放置した際に組成物の構成原料が分離することがなく、スラリー状態が維持されることを言う。
上記の溶媒は固体電解質の分散媒として働く。固体電解質は、上記の溶媒に一部溶解していてもよいし、溶解していなくてもよい。
尚、固体電解質は、上記溶媒に溶解していないことが好ましい。
R1及びR2の炭素数は、好ましくは5以下であり、より好ましくは3以下である。
R1及びR2は同じであっても異なっていてもよいが、同じであることが好ましい。
本発明の固体電解質組成物は、さらにバインダーを含んでもよい。
バインダーとしては、下記式(1)で示される繰返単位及び下記式(2)で示される繰返単位を有する共重合体が好ましい。(1)で示される繰返単位はフッ化ビニリデンに基づく重合単位(VDF)であり、(2)で示される繰返単位はヘキサフルオロプロピレンに基づく重合単位(HFP)である。
m:n=50~90:50~10・・・(A)
m=100×(m1×m2)/(m1×m2+n1×n2)
n=100×(n1×n2)/(m1×m2+n1×n2)
式中、m1は核磁気共鳴測定(NMR)で測定された式(1)で示されるセグメント(繰返単位)のmol%であり、n1は核磁気共鳴測定(NMR)で測定された式(2)で示されるセグメントのmol%であり、m2は式(1)で示されるセグメントの分子量であり、n2は式(2)で示されるセグメントの分子量である。
尚、NMRで測定するのは、一分子中の各セグメントのmol%ではなく、バインダー全部に対する各セグメントのmol%である。
バインダー分子の数平均分子量が1,000~100,000であれば、溶媒への溶解性が向上し、溶媒量を少なくすることができる。
一方、バインダー分子の数平均分子量が5,000~50,000であれば、粘着性が増すので、本発明の組成物の分散安定性や塗布性が向上し、例えば正極層を作製しやすくなる。
0.5≦100×x/y≦50
x:組成物中のバインダーの重量
y:組成物中のバインダーの重量+バインダー以外の固形分の重量
本発明の組成物は、正極活物質又は負極活物質を含んでもよい。
正極活物質は、リチウムイオンの挿入脱離が可能な物質であり、電池分野において正極活部質として公知のものが使用できる。
また、LixCoO2,LixNiO2,LixMn2O4,LixFePO4,LixCoPO4,LixMn1/3Ni1/3Co1/3O2,LixMn1.5Ni0.5O2等も使用できる(Xは0.1~0.9である。)
式(D)において、Zはそれぞれ-S-又は-NH-であり、nは繰返数2~300の整数である。)
導電助剤は、導電性を有していればよく、その電子伝導度は、好ましくは1×103S/cm以上であり、より好ましくは1×105S/cm以上である。導電助剤としては、炭素材料、金属粉末及び金属化合物から選択される物質、及びこれらの混合物が挙げられる。
例えば、炭素材料、具体的には、人造黒鉛、黒鉛炭素繊維、樹脂焼成炭素、熱分解気相成長炭素、コークス、メソカーボンマイクロビーズ(MCMB)、フルフリルアルコール樹脂焼成炭素、ポリアセン、ピッチ系炭素繊維、気相成長炭素繊維、天然黒鉛及び難黒鉛化性炭素等が挙げられる。これらは単独で用いてもよいし混合物としてもよい。好ましくは、人造黒鉛である。
また、金属リチウム、金属インジウム、金属アルミ、金属ケイ素等の金属自体や他の元素、化合物と組合せた合金を、負極材として用いることができる。
本発明の組成物は、例えば、上記の固体電解質と溶媒とを90重量%以上含んでもよく、95重量%以上含んでもよく、98重量%以上含んでもよい。尚、本発明の組成物が、上記固体電解質と溶媒との合計で100重量%であってもよいことは言うまでもない。
本発明の固体電解質組成物の製造方法は、上記の固体電解質及び式(1)で表される溶媒を混合する。混合方法は特に限定されず、公知の方法を用いればよい。固体電解質等の成分、成分量等の条件は上記と同じである。
本発明の固体電解質組成物を用いて固体電解質含有層を製造することができる。固体電解質含有層は固体電解質のみからなっていてもよいし、上記の他の成分を含んでいてもよい。
本発明の固体電解質層は、正極活物質、負極活物質を含まない層である。即ち、固体電解質と、任意にバインダー等を含む。固体電解質層の厚さは、0.01mm以上10mm以下であることが好ましい。
本発明の正極層は、上記固体電解質と正極活物質を含む層である。正極活物質は上記の通りであり、導電助剤やバインダーを含んでもよい。導電助剤やバインダーも上記の通りである。正極層の厚さは、0.01mm以上10mm以下であることが好ましい。
本発明の負極層は、上記固体電解質と負極活物質を含む層である。負極活物質は上記の通りであり、導電助剤やバインダーを含んでもよい。導電助剤やバインダーも上記の通りである。負極層の厚さは、0.01mm以上10mm以下であることが好ましい。
その際の温度は、材料が分解、変質しない範囲であれば何れでもよく、通常、300℃以下である。ここで、固体電解質含有層中の溶媒を完全に除いた方がよいが、微量残っていてもよい。尚、固体電解質含有層中の溶媒は、固体電解質粒子間に存在している場合と固体電解質粒子自体に存在している場合があると推測している。
本発明の電解質層は、Liを含む固体電解質を含み、上記式(1)で表される溶媒を含む。
本発明の電解質層は、式(1)で表される溶媒を必須で含む点以外は上記の固体電解質含有層と同様である。
本発明の電池は、電解質層、正極層及び負極層を備え、電解質層、正極層及び負極層の少なくとも1層がLiを含む固体電解質と上記式(1)で表される溶媒を含む。
正極層、電解質層、負極層のうち、少なくとも1層が上記の固体電解質含有層であればよく、これらのうちいずれか1層もしくは2層、又は全ての層がLiを含む固体電解質と上記式(1)で表される溶媒を含んでもよい。
正極層は正極活物質を含む層である。正極活物質は上記の通りであり、導電助剤やバインダーを含んでもよい。導電助剤やバインダーは上記の通りである。
正極層の厚さは、0.01mm以上10mm以下であることが好ましい。
負極層は負極活物質を含む層である。負極活物質は上記の通りであり、導電助剤やバインダーを含んでもよい。導電助剤やバインダーは上記の通りである。負極層の厚さは、0.01mm以上10mm以下であることが好ましい。
硫化リチウムの製造及び精製は、国際公開公報WO2005/040039A1の実施例と同様に行った。具体的には、下記の通りである。
(1)硫化リチウムの製造
撹拌翼のついた10リットルオートクレーブにN-メチル-2-ピロリドン(NMP)3326.4g(33.6モル)及び水酸化リチウム287.4g(12モル)を仕込み、300rpm、130℃に昇温した。昇温後、液中に硫化水素を3リットル/分の供給速度で2時間吹き込んだ。
続いて、この反応液を窒素気流下(200cc/分)昇温し、反応した硫化水素の一部を脱硫化水素化した。昇温するにつれ、上記硫化水素と水酸化リチウムの反応により副生した水が蒸発を始めたが、この水はコンデンサにより凝縮し系外に抜き出した。水を系外に留去すると共に反応液の温度は上昇するが、180℃に達した時点で昇温を停止し、一定温度に保持した。脱硫化水素反応が終了後(約80分)反応を終了し、硫化リチウムを得た。
上記(1)で得られた500mLのスラリー反応溶液(NMP-硫化リチウムスラリー)中のNMPをデカンテーションした後、脱水したNMP100mLを加え、105℃で約1時間撹拌した。その温度のままNMPをデカンテーションした。さらにNMP100mLを加え、105℃で約1時間撹拌し、その温度のままNMPをデカンテーションし、同様の操作を合計4回繰り返した。デカンテーション終了後、窒素気流下230℃(NMPの沸点以上の温度)で硫化リチウムを常圧下で3時間乾燥した。得られた硫化リチウム中の不純物含有量を測定した。
製造例1で製造した硫化リチウムを用いて、国際公開公報WO07/066539の実施例1と同様の方法で固体電解質の製造及び結晶化を行った。
具体的には、下記のように行った。
製造例1で製造した硫化リチウム0.6508g(0.01417mol)と五硫化二リン(アルドリッチ社製)1.3492g(0.00607mol)をよく混合した。そして、この混合粉末と直径10mmのジルコニア製ボール10ケと遊星型ボールミル(フリッチュ社製:型番P-7)アルミナ製ポットに投入し完全密閉するとともにこのアルミナ製ポット内に窒素を充填し、窒素雰囲気にした。
得られた硫化物ガラスセラミックス72gと、トルエン100gを(株)伊藤製作所製 遊星ボールミルLP-4、直径10mmZrボール(743g)を用いて200rpmで2時間撹拌し、電解質粒子1を得た。
電解質粒子1の平均粒径は、8.8μmであった。イオン伝導度は6.36×10-4S/cmであった。
製造例1で製造・精製した高純度硫化リチウム0.766g(0.0166モル)と、五硫化二リン(アルドリッチ社製)を1.22g(0.0055モル)としたことと、窒素雰囲気下で、300℃で2時間加熱しない以外は製造例2と同様にして電解質粒子2を製造した。
得られた電解質粒子2について、X線測定してガラス化していることを確認した。電解質粒子2の平均粒径は、11.2μmであった。イオン伝導度は、1.22×10-4S/cmであった。
国際公開第2014/010169の実施例3と同様にして、固体電解質3(硫黄系固体電解質Li2S:P2S5:LiBr=64:21:15(mol))を製造した。
具体的には、以下の通りである。
窒素気流下で非極性溶媒としてトルエン270gを600mlセパラブルフラスコに加え、水酸化リチウム(本荘ケミカル社)30gを投入し、フルゾーン撹拌翼300rpmで撹拌しながら、95℃に保持した。スラリー中に硫化水素を300ml/分の供給速度で吹き込みながら104℃まで昇温した。セパラブルフラスコからは、水とトルエンの共沸ガスが連続的に排出された。この共沸ガスを、系外のコンデンサで凝縮させることにより脱水した。この間、留出するトルエンと同量のトルエンを連続的に供給し、反応液レベルを一定に保持した。
得られた粉末を塩酸滴定及び硝酸銀滴定で分析したところ、硫化リチウムの純度は99.0%であった。また、X線回折測定したところ、硫化リチウムの結晶パターン以外のピークが検出されないことを確認した。平均粒径は450μm(スラリー溶液)であった。
図1に示す装置を用いた。
製造装置1は、溶媒中で原料を粉砕しつつ反応させてイオン伝導性物質を合成する粉砕機10と、原料を溶媒中で接触させて原料の温度を一定に保持する温度保持槽20とを備える。温度保持槽20は容器22と撹拌翼24からなる。撹拌翼24はモータ(M)により駆動される。
尚、上記計量、添加、密閉作業は全てグローブボックス内、窒素雰囲気下で実施し、使用する器具類は全て乾燥機で事前に水分除去したものを用いた。また、脱水トルエン中の水分量はカールフィッシャー法による水分測定で8.4ppmであった。
ミル本体は、液温が70℃に保持できるよう外部循環により温水を通水し、周速12m/sの条件で運転した。2時間ごとにスラリーを採取し、150℃にて乾燥し白黄色の粉体スラリー(クリーム状)を得た。
得られたスラリーをろ過・風乾後、160℃で2時間チューブヒーターにより乾燥し、固体電解質を粉体として得た。このときの回収率は95%であり、反応器内に付着物はみられなかった。
上記固体電解質粉体をグローブボックス内、Ar雰囲気下でSUS製チューブに入れて密閉し、230℃で2時間の加熱処理を行ない、固体電解質ガラスセラミックを得た。
この電解質ガラスセラミックのイオン伝導度は、1.8×10-3S/cmであった。
[固体電解質組成物の調製]
1gの固体電解質2に、溶剤として4-ヘプタノン9gを加えて、マグネットスターラーで3時間撹拌した後、150℃に加熱してマグネットスターラーで1時間撹拌して組成物を調製した。
上記で得た組成物の溶剤を乾燥させてサンプルを得た。得られたサンプルを錠剤成形機に充填し、360MPaの圧力を加え成形体を得た。さらに、カーボンペーストを成形体の両面に塗布、乾燥させることによって電極を形成し、伝導度測定用の成形体(直径約10mm、厚み約1mm)を作製した。この成形体についてソーラトロン社製交流インピーダンス測定装置を用いて、交流インピーダンス法によってイオン伝導度を測定した。結果を表1に示す。
溶剤を4-ヘプタノンから3-ペンタノンに替えた他は実施例1と同様にして組成物を調製し、評価した。結果を表1に示す。
溶媒を4-ヘプタノンから2-ブタノンに替えた他は実施例1と同様にして組成物を調製し、評価した。結果を表1に示す。
組成物を調製せず、固体電解質2を錠剤成形機に充填し、360MPaの圧力を加え成形体を得た。さらに、カーボンペーストを成形体の両面に塗布、乾燥させることによって電極を形成し、伝導度測定用の成形体(直径約10mm、厚み約1mm)を作製した。この成形体について実施例1と同じ方法でイオン伝導度測定を行った。結果を表1に示す。
固体電解質2を固体電解質1に替えた他は実施例1と同様にして組成物を調製し、評価した。結果を表2に示す。
溶剤を4-ヘプタノンから3-ペンタノンに替えた他は実施例3と同様にして組成物を調製し、評価した。結果を表2に示す。
溶剤を4-ヘプタノンから2-ブタノンに替えた他は実施例3と同様にして組成物を調製し、評価した。結果を表2に示す。
組成物を調製せず、固体電解質1のイオン伝導度測定のみを行った。結果を表2に示す。
固体電解質2を固体電解質3に替えた他は実施例1と同様にして組成物を調製し、評価した。結果を表3に示す。
溶剤を4-ヘプタノンから3-ペンタノンに替えた他は実施例5と同様にして組成物を調製し、評価した。結果を表3に示す。
溶剤を4-ヘプタノンから2-ブタノンに替えた他は実施例5と同様にして組成物を調製し、評価した。結果を表3に示す。
組成物を調製せず、固体電解質3のイオン伝導度測定のみを行った。結果を表3に示す。
溶剤を4-ヘプタノンからジイソプロピルケトンに替えた他は実施例5と同様にして組成物を調製し、評価した。結果を表3に示す。
溶剤を4-ヘプタノンからトリエチルアミンに替えた他は実施例5と同様にして組成物を調製し、評価を試みた。しかしながら、イオン伝導度は測定できなかった。
溶剤を4-ヘプタノンからγブチロラクトンに替えた他は実施例5と同様にして組成物を調製し、評価を試みた。しかしながら、イオン伝導度は測定できなかった。
溶剤を4-ヘプタノンから1,4-ジオキサンに替えた他は実施例5と同様にして組成物を調製し、評価を試みた。しかしながら、イオン伝導度は測定できなかった。
溶剤を4-ヘプタノンからシクロヘキサノンに替えた他は実施例1と同様にして組成物を調製し、評価を試みた。しかしながら、イオン伝導度は測定できなかった。
本願のパリ優先の基礎となる日本出願明細書の内容を全てここに援用する。
Claims (19)
- Liを含む固体電解質、及び下記式(1)で表される溶媒を含む、固体電解質組成物。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。) - R1及びR2が、それぞれ脂肪族炭化水素基である請求項1に記載の固体電解質組成物。
- R1及びR2が、それぞれ飽和脂肪族炭化水素基である請求項2に記載の固体電解質組成物。
- R1及びR2が、それぞれ鎖状の飽和脂肪族炭化水素基である請求項3に記載の固体電解質組成物。
- R1及びR2が同一である請求項1~4のいずれかに記載の固体電解質組成物。
- R1及びR2が、それぞれ直鎖の飽和脂肪族炭化水素基である請求項4又は5に記載の固体電解質組成物。
- R1及びR2が、それぞれ炭素数5以下の炭化水素基である請求項1~6のいずれかに記載の固体電解質組成物。
- R1及びR2が、それぞれ炭素数3以下の炭化水素基である請求項1~7のいずれかに記載の固体電解質組成物。
- 前記固体電解質が、Li、P及びSを含む請求項1~8のいずれかに記載の固体電解質組成物。
- 前記Li、P及びSをLi2SとP2S5に換算した場合、Li2SとP2S5のモル比が、Li2S:P2S5=60:40~82:18である請求項9に記載の固体電解質組成物。
- 前記固体電解質と前記溶媒の重量比が、固体電解質:溶媒=1:0.3~15.0である請求項1~10のいずれかに記載の固体電解質組成物。
- さらにバインダーを含む請求項1~11のいずれかに記載の固体電解質組成物。
- 前記バインダーが、フッ化ビニリデンに基づく重合単位及びヘキサフルオロプロピレンに基づく重合単位を含む共重合体である請求項12に記載の固体電解質組成物。
- Liを含む固体電解質、及び下記式(1)で表される溶媒を混合する、固体電解質組成物の製造方法。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。) - さらにバインダーを混合する請求項14に記載の固体電解質組成物の製造方法。
- 前記バインダーがフッ化ビニリデンに基づく重合単位及びヘキサフルオロプロピレンに基づく重合単位を含む共重合体である請求項15に記載の固体電解質組成物の製造方法。
- 請求項1~13のいずれかに記載の固体電解質組成物を用いる、固体電解質含有層の製造方法。
- Liを含む固体電解質を含む電解質層であって、下記式(1)で表される溶媒を含む電解質層。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。) - 電解質層、正極層及び負極層を備える電池であって、
前記電解質層、前記正極層及び前記負極層の少なくとも1層がLiを含む固体電解質と下記式(1)で表される溶媒を含む電池。
R1-(C=O)-R2 (1)
(式(1)中、R1及びR2はそれぞれ炭素数2以上の炭化水素基である。)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/327,913 US20170214081A1 (en) | 2014-07-23 | 2015-07-23 | Solid electrolyte composition, method for producing same, method for producing solid electrolyte-containing layer, electrolyte layer, and battery |
JP2016535802A JP6599865B2 (ja) | 2014-07-23 | 2015-07-23 | 固体電解質組成物、その製造方法、固体電解質含有層の製造方法、電解質層及び電池 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014149869 | 2014-07-23 | ||
JP2014-149869 | 2014-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016013224A1 true WO2016013224A1 (ja) | 2016-01-28 |
Family
ID=55162765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/003700 WO2016013224A1 (ja) | 2014-07-23 | 2015-07-23 | 固体電解質組成物、その製造方法、固体電解質含有層の製造方法、電解質層及び電池 |
Country Status (3)
Country | Link |
---|---|
US (1) | US20170214081A1 (ja) |
JP (1) | JP6599865B2 (ja) |
WO (1) | WO2016013224A1 (ja) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106178680A (zh) * | 2016-08-25 | 2016-12-07 | 广西联壮科技股份有限公司 | 螺旋轴驱动型多级硫化钠过滤装置 |
WO2018051432A1 (ja) * | 2016-09-14 | 2018-03-22 | 日立化成株式会社 | 固体電解質組成物、固体電解質グリーンシート、固体電解質グリーンシートの製造方法、固体電解質シート、固体電解質シートの製造方法、及び全固体電池 |
JP2018049731A (ja) * | 2016-09-21 | 2018-03-29 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料、固体電解質膜および全固体型リチウムイオン電池 |
JP2018049732A (ja) * | 2016-09-21 | 2018-03-29 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料、固体電解質膜、全固体型リチウムイオン電池および硫化物系無機固体電解質材料の製造方法 |
WO2019087750A1 (ja) * | 2017-10-30 | 2019-05-09 | 富士フイルム株式会社 | 活物質層形成用組成物及びその製造方法、並びに、全固体二次電池用電極シート及び全固体二次電池の製造方法 |
JP2019091632A (ja) * | 2017-11-15 | 2019-06-13 | トヨタ自動車株式会社 | 全固体電池の製造方法、全固体電池およびスラリー |
JP2019199394A (ja) * | 2018-05-18 | 2019-11-21 | トヨタ自動車株式会社 | 硫化物系固体電解質、当該硫化物系固体電解質の製造方法、及び、全固体電池の製造方法 |
JP2020091275A (ja) * | 2018-11-26 | 2020-06-11 | 住友金属鉱山株式会社 | リチウム評価方法 |
JPWO2021039950A1 (ja) * | 2019-08-30 | 2021-03-04 | ||
EP4199142A1 (en) | 2021-12-16 | 2023-06-21 | Ricoh Company, Ltd. | Liquid composition, storage container, and apparatus and method for producing solid electrolyte layer or electrode mixture layer |
WO2023112517A1 (en) | 2021-12-16 | 2023-06-22 | Ricoh Company, Ltd. | Liquid composition, storage container, and apparatus and method for producing solid electrolyte layer or electrode mixture layer |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102406179B1 (ko) * | 2017-10-13 | 2022-06-07 | 현대자동차주식회사 | 침상형 황화물계 고체 전해질의 제조 방법 |
KR102578412B1 (ko) * | 2021-04-07 | 2023-09-15 | 울산과학기술원 | 리튬 전극의 인듐 도금용 전해질 조성물 및 이를 이용한 리튬 금속 음극의 제조방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012204114A (ja) * | 2011-03-25 | 2012-10-22 | Idemitsu Kosan Co Ltd | リチウム二次電池電極用スラリー組成物及びそれを用いた電池 |
JP2014043487A (ja) * | 2012-08-24 | 2014-03-13 | Nissan Chem Ind Ltd | エチレンオキサイド鎖を有するハイパーブランチポリマー及びその利用 |
WO2014051032A1 (ja) * | 2012-09-28 | 2014-04-03 | 日本ゼオン株式会社 | 全固体二次電池用スラリー、全固体二次電池用電極の製造方法、全固体二次電池用電解質層の製造方法及び全固体二次電池 |
JP2015164125A (ja) * | 2014-02-03 | 2015-09-10 | 富士フイルム株式会社 | 固体電解質組成物、これを用いた電池用電極シートおよび全固体二次電池、ならびに電池用電極シートおよび全固体二次電池の製造方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9425459B2 (en) * | 2011-12-15 | 2016-08-23 | Samsung Electronics Co., Ltd. | Electrode for solid-state batteries and method of preparing the electrode, solid-state battery containing the electrode, and bonding film used for preparing the electrode |
-
2015
- 2015-07-23 US US15/327,913 patent/US20170214081A1/en not_active Abandoned
- 2015-07-23 WO PCT/JP2015/003700 patent/WO2016013224A1/ja active Application Filing
- 2015-07-23 JP JP2016535802A patent/JP6599865B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012204114A (ja) * | 2011-03-25 | 2012-10-22 | Idemitsu Kosan Co Ltd | リチウム二次電池電極用スラリー組成物及びそれを用いた電池 |
JP2014043487A (ja) * | 2012-08-24 | 2014-03-13 | Nissan Chem Ind Ltd | エチレンオキサイド鎖を有するハイパーブランチポリマー及びその利用 |
WO2014051032A1 (ja) * | 2012-09-28 | 2014-04-03 | 日本ゼオン株式会社 | 全固体二次電池用スラリー、全固体二次電池用電極の製造方法、全固体二次電池用電解質層の製造方法及び全固体二次電池 |
JP2015164125A (ja) * | 2014-02-03 | 2015-09-10 | 富士フイルム株式会社 | 固体電解質組成物、これを用いた電池用電極シートおよび全固体二次電池、ならびに電池用電極シートおよび全固体二次電池の製造方法 |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106178680A (zh) * | 2016-08-25 | 2016-12-07 | 广西联壮科技股份有限公司 | 螺旋轴驱动型多级硫化钠过滤装置 |
JPWO2018051432A1 (ja) * | 2016-09-14 | 2019-06-27 | 日立化成株式会社 | 固体電解質組成物、固体電解質グリーンシート、固体電解質グリーンシートの製造方法、固体電解質シート、固体電解質シートの製造方法、及び全固体電池 |
WO2018051432A1 (ja) * | 2016-09-14 | 2018-03-22 | 日立化成株式会社 | 固体電解質組成物、固体電解質グリーンシート、固体電解質グリーンシートの製造方法、固体電解質シート、固体電解質シートの製造方法、及び全固体電池 |
JP2021061259A (ja) * | 2016-09-21 | 2021-04-15 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料の評価方法 |
JP2018049732A (ja) * | 2016-09-21 | 2018-03-29 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料、固体電解質膜、全固体型リチウムイオン電池および硫化物系無機固体電解質材料の製造方法 |
JP7344345B2 (ja) | 2016-09-21 | 2023-09-13 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料の製造方法 |
JP2018049731A (ja) * | 2016-09-21 | 2018-03-29 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料、固体電解質膜および全固体型リチウムイオン電池 |
JP7055907B2 (ja) | 2016-09-21 | 2022-04-18 | 古河機械金属株式会社 | 硫化物系無機固体電解質材料の評価方法 |
KR102364247B1 (ko) | 2017-10-30 | 2022-02-16 | 후지필름 가부시키가이샤 | 활물질층 형성용 조성물과 그 제조 방법, 및 전고체 이차 전지용 전극 시트와 전고체 이차 전지의 제조 방법 |
KR20200051012A (ko) * | 2017-10-30 | 2020-05-12 | 후지필름 가부시키가이샤 | 활물질층 형성용 조성물과 그 제조 방법, 및 전고체 이차 전지용 전극 시트와 전고체 이차 전지의 제조 방법 |
US11658282B2 (en) | 2017-10-30 | 2023-05-23 | Fujifilm Corporation | Composition for forming active material layer and method for manufacturing the same, and methods for manufacturing electrode sheet for all-solid state secondary battery and all-solid state secondary battery |
JPWO2019087750A1 (ja) * | 2017-10-30 | 2020-11-12 | 富士フイルム株式会社 | 活物質層形成用組成物及びその製造方法、並びに、全固体二次電池用電極シート及び全固体二次電池の製造方法 |
WO2019087750A1 (ja) * | 2017-10-30 | 2019-05-09 | 富士フイルム株式会社 | 活物質層形成用組成物及びその製造方法、並びに、全固体二次電池用電極シート及び全固体二次電池の製造方法 |
JP2019091632A (ja) * | 2017-11-15 | 2019-06-13 | トヨタ自動車株式会社 | 全固体電池の製造方法、全固体電池およびスラリー |
JP6996244B2 (ja) | 2017-11-15 | 2022-01-17 | トヨタ自動車株式会社 | 全固体電池の製造方法、全固体電池およびスラリー |
US11637314B2 (en) | 2018-05-18 | 2023-04-25 | Toyota Jidosha Kabushiki Kaisha | Sulfide-based solid electrolyte, method for producing the sulfide-based solid electrolyte, and method for producing all-solid-state battery |
US11217821B2 (en) | 2018-05-18 | 2022-01-04 | Toyota Jidosha Kabushiki Kaisha | Sulfide-based solid electrolyte, method for producing the sulfide-based solid electrolyte, and method for producing all-solid-state battery |
JP7077766B2 (ja) | 2018-05-18 | 2022-05-31 | トヨタ自動車株式会社 | 硫化物系固体電解質、当該硫化物系固体電解質の製造方法、及び、全固体電池の製造方法 |
JP2019199394A (ja) * | 2018-05-18 | 2019-11-21 | トヨタ自動車株式会社 | 硫化物系固体電解質、当該硫化物系固体電解質の製造方法、及び、全固体電池の製造方法 |
US11984555B2 (en) | 2018-05-18 | 2024-05-14 | Toyota Jidosha Kabushiki Kaisha | Sulfide-based solid electrolyte, method for producing the sulfide-based solid electrolyte, and method for producing all-solid-state battery |
JP2020091275A (ja) * | 2018-11-26 | 2020-06-11 | 住友金属鉱山株式会社 | リチウム評価方法 |
JP7342466B2 (ja) | 2018-11-26 | 2023-09-12 | 住友金属鉱山株式会社 | リチウム評価方法 |
JP7263525B2 (ja) | 2019-08-30 | 2023-04-24 | 富士フイルム株式会社 | 無機固体電解質含有組成物、全固体二次電池用シート及び全固体二次電池並びに、全固体二次電池用シート及び全固体二次電池の製造方法 |
JPWO2021039950A1 (ja) * | 2019-08-30 | 2021-03-04 | ||
EP4199142A1 (en) | 2021-12-16 | 2023-06-21 | Ricoh Company, Ltd. | Liquid composition, storage container, and apparatus and method for producing solid electrolyte layer or electrode mixture layer |
WO2023112517A1 (en) | 2021-12-16 | 2023-06-22 | Ricoh Company, Ltd. | Liquid composition, storage container, and apparatus and method for producing solid electrolyte layer or electrode mixture layer |
Also Published As
Publication number | Publication date |
---|---|
JPWO2016013224A1 (ja) | 2017-04-27 |
US20170214081A1 (en) | 2017-07-27 |
JP6599865B2 (ja) | 2019-10-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6599865B2 (ja) | 固体電解質組成物、その製造方法、固体電解質含有層の製造方法、電解質層及び電池 | |
JP6139864B2 (ja) | 固体電解質成形体及びその製造方法、並びに全固体電池 | |
JP6633538B2 (ja) | 硫化物ガラス及び結晶性固体電解質の製造方法、結晶性固体電解質、硫化物ガラス及び固体電池 | |
WO2014073197A1 (ja) | 固体電解質 | |
JP5912493B2 (ja) | リチウム粒子を含む組成物、電極及び電池 | |
JP6077740B2 (ja) | 固体電解質 | |
JP6317612B2 (ja) | 活物質複合体の製造方法 | |
WO2013069243A1 (ja) | 固体電解質 | |
JP2017199631A (ja) | 硫化物固体電解質、電極合材及びリチウムイオン電池 | |
JP2016134316A (ja) | 固体電解質 | |
JP5594253B2 (ja) | 硫化物固体電解質材料、リチウム固体電池、および、硫化物固体電解質材料の製造方法 | |
JP6577222B2 (ja) | 硫化物固体電解質の製造方法及び硫黄系材料 | |
JP6073107B2 (ja) | 固体電解質 | |
JP2012190772A (ja) | 全固体リチウムイオン電池及び正極合材 | |
JP2017117635A (ja) | 硫化物固体電解質、硫化物ガラス、電極合材及びリチウムイオン電池 | |
JP5864993B2 (ja) | 複合電極材料及びその製造方法、並びに該複合電極材料を用いたリチウム電池 | |
JP6088797B2 (ja) | 固体電解質 | |
JP2016207354A (ja) | 硫化物固体電解質の製造方法 | |
JP2014192093A (ja) | 負極合材 | |
JP2014093263A (ja) | 固体電解質及びリチウム電池 | |
JP6712165B2 (ja) | 硫化物固体電解質、電極合材及びリチウムイオン電池 | |
JP2016091717A (ja) | 固体電解質の製造方法 | |
JP5921492B2 (ja) | 負極合材、電極及びリチウムイオン電池 | |
JP5940345B2 (ja) | リチウムイオン電池 | |
JP2017117639A (ja) | 硫化物固体電解質、硫化物ガラス、電極合材及びリチウムイオン電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15824311 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2016535802 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15327913 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 15824311 Country of ref document: EP Kind code of ref document: A1 |