WO2013084393A1 - 非水電解質二次電池および非水電解質二次電池の製造方法 - Google Patents
非水電解質二次電池および非水電解質二次電池の製造方法 Download PDFInfo
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- H—ELECTRICITY
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- 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
- H01M10/0567—Liquid materials characterised by the additives
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0025—Organic electrolyte
- H01M2300/0028—Organic electrolyte characterised by the solvent
- H01M2300/0037—Mixture of solvents
- H01M2300/004—Three solvents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49108—Electric battery cell making
Definitions
- the present invention relates to a non-aqueous electrolyte secondary battery and a method for producing a non-aqueous electrolyte secondary battery.
- Non-aqueous electrolyte secondary batteries such as lithium-ion secondary batteries are widely used as power sources for portable devices such as mobile phones because they have higher energy density than other secondary batteries such as lead storage batteries and alkaline storage batteries. ing. In recent years, research and development for using a non-aqueous electrolyte secondary battery as a power source for a moving body such as an electric vehicle has been actively conducted.
- Non-aqueous electrolyte secondary batteries such as lithium ion secondary batteries have high energy density
- the battery expands due to gas generation inside the battery due to repeated charge / discharge and long-term storage. These are mainly caused by the generation of gas due to the reaction between the electrode plate and the non-aqueous electrolyte.
- it has been studied to add various additives to the non-aqueous electrolyte. ing.
- Patent Document 1 describes a compound containing sulfur as an additive to a non-aqueous electrolyte.
- a non-aqueous electrolyte secondary battery mounted as a power source for a mobile object such as a battery car or a hybrid car is used over a long period of time as compared with a conventional portable device.
- the battery when used in the summer, the battery may be used in a harsh environment such that the temperature of the battery may be close to 60 ° C. depending on where the battery is mounted.
- the decomposition of the electrolytic solution is promoted and a large amount of gas is generated inside the battery.
- gas is generated inside the battery, the internal pressure of the battery case increases and the battery expands. As a result, there is a problem that the battery mounting portion of the mobile body is deformed to cause a problem, or that the battery safety mechanism is activated when the internal pressure is extremely increased, and the battery is not activated.
- the positive electrode potential during charging is set to 3.7 V or less with respect to the lithium metal potential, and the non-aqueous electrolyte has a specific structure. It has been found that by adding a disulfone compound, gas generation inside the battery can be significantly suppressed when the battery is used at a high temperature for a long period of time.
- the invention of the present application is a nonaqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte.
- the positive electrode potential at the time of charging is 3.7 V or less with respect to the lithium metal potential.
- the cyclic disulfone compound of the formula (1) is contained in an amount of 0.1 to 4.0% by mass with respect to the total mass of the nonaqueous electrolyte.
- R1 and R2 are alkyl groups having 2 to 4 carbon atoms which may contain hydrogen or a halogen element.
- the gas generation inside a battery at the time of using a battery over a long period of time at high temperature can be suppressed.
- the positive electrode preferably includes lithium iron phosphate. According to this configuration, since lithium iron phosphate has a large discharge capacity of 3.7 V or less with respect to the metal lithium potential, the battery capacity can be increased.
- the battery according to the invention of the present application has 2,4-diethyl-1,3-dithietane-1,1,3,3-tetraone represented by the following formula (2) as the cyclic disulfone compound: 2- (methylethyl) -1,3-dithietane-1,1,3,3-tetraone and 2,4-bis (methylethyl) -1,3 represented by the following formula (4) -It is preferable that at least one of dithietane-1,1,3,3-tetraone is contained.
- gas generation inside the battery can be significantly suppressed when the battery is used at a high temperature for a long period of time.
- the negative electrode includes an amorphous carbon having an average particle diameter of 2 to 25 ⁇ m or a carbon material whose particle surface is coated with amorphous carbon. According to this configuration, gas generation inside the battery can be significantly suppressed as compared with the case where graphite or the like is used as the negative electrode material.
- the invention of the present application provides a non-aqueous electrolyte secondary battery comprising a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode potential during charging is 3.7 V or less with respect to the lithium metal potential, Characterized in that the cyclic disulfone compound of the general formula (1) is contained in an amount of 0.1 to 4.0% by mass with respect to the total mass of the nonaqueous electrolyte.
- Embodiment 1 of the present invention will be described with reference to FIG.
- the nonaqueous electrolyte secondary battery (hereinafter referred to as “secondary battery”) shown in FIG. 1 is coated with a positive electrode mixture containing a positive electrode active material on both surfaces of a positive electrode current collector made of an aluminum foil or an aluminum alloy foil.
- a power generation element in which a positive electrode plate and a negative electrode plate coated with a negative electrode mixture containing a negative electrode active material on both sides of a negative electrode current collector made of copper foil are wound through a separator, Housed in a battery case.
- the positive electrode plate is connected to the battery lid via a positive electrode lead
- the negative electrode plate is connected to a negative electrode terminal provided on the battery lid
- the battery lid is attached by laser welding so as to close the opening of the battery case.
- a hole is provided in the battery case.
- a nonaqueous electrolyte secondary battery is obtained by injecting a nonaqueous electrolyte into the battery case through the hole and sealing the hole after the nonaqueous electrolyte is injected. .
- the nonaqueous electrolyte of the present invention uses an electrolyte salt dissolved in a nonaqueous solvent.
- the electrolyte salt include LiClO 4 , LiPF 6 , LiBF 4 , LiAsF 6 and the like, and these electrolyte salts can be used alone or in combination of two or more.
- LiPF 6 is preferable as the electrolyte salt, and LiPF 6 can be used as a main component of the electrolyte salt, and other electrolyte salts such as LiBF 4 can be mixed and used.
- nonaqueous solvent for the nonaqueous electrolyte ethylene carbonate, propylene carbonate, butylene carbonate, trifluoropropylene carbonate, ⁇ -butyrolactone, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, and the like can be used. These nonaqueous solvents are preferably mixed and used from the viewpoint of adjusting the conductivity and viscosity of the nonaqueous electrolyte.
- the nonaqueous electrolyte of the present invention contains a cyclic disulfone compound represented by the following general formula (1) in an amount of 0.1 to 4.0% by mass based on the total mass of the nonaqueous electrolyte.
- R1 and R2 are an alkyl group having 2 to 4 carbon atoms or hydrogen which may contain a halogen element.
- Specific examples of the compound represented by the general formula (1) include 2,4-methyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-ethyl-1,3-dithietane-1 , 1,3,3-tetraone, 2,4-diethyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-methyl-1,3-dithietane-1,1,3,3 -Tetraone, 2,4-dimethyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-propyl-1,3-dithietane-1,1,3,3-tetraone, 2,4 -Dipropyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-butyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-dibutyl-1,3 -Di
- the secondary battery of the present invention has a positive electrode potential at the time of charging of 3.7 V or less with respect to the lithium metal potential, and the nonaqueous electrolyte contains the cyclic disulfone compound represented by the general formula (1). Can be prevented from generating gas inside the battery when used for a long time under high temperature. Although details of the mechanism that exerts the above effect are not clear, the cyclic disulfone compound is decomposed on the electrode at the initial stage of use of the battery (during several charging and discharging immediately after completion of the battery), and a protective film is formed. It is thought to be due to.
- R1 and R2 are an alkyl group having 2 to 4 carbon atoms or hydrogen which may contain a halogen element. When the carbon number is 1, it is difficult to dissolve in the nonaqueous electrolyte, and when the carbon number is 5 or more, synthesis becomes difficult.
- the positive electrode potential during charging is calculated by adding the negative electrode potential during charging to the battery voltage during charging.
- the negative electrode potential at the time of charging is a potential with respect to lithium metal, and is obtained from a single electrode battery using lithium metal as a counter electrode.
- the above “the positive electrode potential during charging is 3.7 V or less with respect to the lithium metal potential” means that the positive electrode potential calculated from the battery voltage during charging and the negative electrode potential during charging is 3.7 V or less.
- the positive electrode electric potential at the time of charge may become 3.7V or more by setting the charge end voltage of the battery in a charging device high.
- the effect of the present invention is not affected, and An effect can be obtained.
- the positive electrode potential during charging can be controlled by adjusting the charging voltage of the battery.
- the positive electrode potential at the time of charging is usually 2.5 V or more.
- the amount of the cyclic disulfone compound of the general formula (1) is 4.0% by mass or less with respect to the total mass of the nonaqueous electrolyte.
- the amount of the cyclic disulfone compound is larger than 4.0% by mass, the reaction between the cyclic disulfone compound and the negative electrode material becomes excessive, and a large amount of gas is generated due to the decomposition of the cyclic disulfone compound.
- the amount of the cyclic disulfone compound is too small, the reaction with the negative electrode material becomes insufficient, and a strong protective film cannot be produced. It is 0.1 mass% or more with respect to.
- the amount of the cyclic disulfone compound with respect to the total mass of the nonaqueous electrolyte is 0.1% by mass or more. It is 0 mass% or less, Preferably it is 0.2 mass% or more and 2.0 mass% or less.
- carbonates such as vinylene carbonate, methyl vinylene carbonate, monofluoroethylene carbonate, difluoroethylene carbonate, etc. may be used alone or in combination of two or more for the purpose of improving cycle life characteristics and improving battery safety. Can be added to the non-aqueous electrolyte.
- the positive electrode active material of the secondary battery of the present invention preferably contains lithium iron phosphate. Since lithium iron phosphate has a large charge / discharge capacity at 3.7 V or less with respect to the metal lithium potential, the battery capacity can be increased by including the lithium iron phosphate in the positive electrode active material.
- the positive electrode active material of the secondary battery of the present invention may include two or more positive electrode active materials. Specifically, a mixture of lithium iron phosphate and another positive electrode active material other than lithium iron phosphate can be used.
- the positive electrode active material which can be mixed with the lithium iron phosphate such as (at least one element M2, M3 is selected from transition metal elements) and LiM2O 2 having a layered rock salt structure, Lim3 2 O 4 having a spinel structure, etc. Can be used.
- the positive electrode plate of the secondary battery of the present invention can contain a conductive agent, a binder, and the like.
- a conductive agent acetylene black, carbon black, graphite or the like can be used.
- the binder polyvinylidene fluoride, vinylidene fluoride-hexafluoropropylene copolymer, styrene-butadiene rubber, polyacrylonitrile and the like can be used alone or in combination.
- a carbon material As the negative electrode active material of the secondary battery of the present invention, a carbon material, an alloy compound of lithium with Al, Si, Pb, Sn, Zn, Cd, etc., metallic lithium, general formula M4Oz (where M4 is W, Mo, At least one element selected from Si, Cu, and Sn, a metal oxide represented by 0 ⁇ z ⁇ 2), or the like can be used.
- the carbonaceous material include amorphous carbon such as non-graphitizable carbon (hard carbon) and graphitizable carbon (soft carbon), graphite (graphite), and the like.
- Amorphous carbon is a carbon material with a smaller degree of hexagonal network development than graphite.
- the amorphous carbon in the present invention has a (002) plane spacing of 3.45 angstroms or more as measured from the X-ray wide angle diffraction method in a discharged state.
- the negative electrode active material of the secondary battery of the present invention preferably contains amorphous carbon.
- Amorphous carbon has a lower reactivity with the cyclic disulfone compound than graphite. Therefore, the cyclic disulfone compound is excessive in the initial stage of use of the battery (several times of charge and discharge immediately after completion of the battery). The reaction can be prevented and a protective film having a preferable thickness can be produced. Therefore, gas generation inside the battery can be suppressed when the negative electrode active material contains amorphous carbon.
- the negative electrode active material of the secondary battery of the present invention may be a mixture of both amorphous carbon and graphite, or may contain only amorphous carbon.
- the negative electrode active material of the secondary battery of the present invention may include particles having amorphous carbon on the surface, and examples thereof include particles having graphite particle surfaces coated with amorphous carbon.
- Examples of a method for coating graphite particles with amorphous carbon include a method in which amorphous carbon is rubbed against graphite particles, a method in which graphite particles are coated with amorphous carbon by a mechanochemical method, or a chemical vapor method. Examples thereof include a method of coating graphite particles with amorphous carbon by a phase growth method (CVD).
- CVD phase growth method
- the negative electrode active material of the secondary battery of the present invention is preferably amorphous carbon having an average particle size of 2 to 25 ⁇ m.
- the average particle diameter of the amorphous carbon can be adjusted, for example, by classifying the pulverized powder so as to be in the form of particles.
- the average particle diameter of the positive electrode active material is a particle diameter having a cumulative degree of 50% (D 50 ) in a volume standard particle size distribution.
- a laser diffraction / scattering particle size distribution measuring device SALD-2000J, manufactured by Shimadzu Corporation
- SALD-2000J laser diffraction / scattering particle size distribution measuring device
- the X axis and Y axis of the laser part of the measuring apparatus were adjusted to center the detector.
- ion-exchanged water was added to prepare a measurement sample.
- the separator is not particularly limited as long as it can electrically separate the positive electrode plate and the negative electrode plate, and a nonwoven fabric, a synthetic resin microporous film, and the like can be used.
- the synthetic resin microporous film can be used.
- a membrane is suitable, and among them, a polyolefin microporous membrane made of polyethylene and polypropylene, a heat resistant resin having an aramid layer on the surface of the polyolefin microporous membrane, and the like can be used.
- the secondary battery shown in FIG. 1 was manufactured as follows. 1. Production of secondary battery of Example 1 (1) Production of positive electrode plate Iron powder, ammonium dihydrogen phosphate and lithium carbonate were weighed and mixed at a molar ratio of 2: 2: 1, and then used as a solvent. The raw material mixed powder was obtained by adding the ethanol and further wet-grinding and mixing with a ball mill for 2 hours. The raw material mixed powder was fired at 700 ° C. for 5 hours in a reducing atmosphere, and further pulverized to obtain particulate carbon-coated lithium iron phosphate.
- NMP was mixed with the obtained carbon-coated lithium iron phosphate, the conductive auxiliary agent acetylene black, and the binder polyvinylidene fluoride in a proportion of 90% by mass, 5% by mass and 5% by mass, respectively.
- An appropriate amount of (N-methylpyrrolidone) was added to adjust the viscosity to prepare a positive electrode mixture paste.
- the positive electrode mixture paste was applied to both sides of an aluminum foil having a thickness of 20 ⁇ m and dried to prepare a positive electrode plate.
- the positive electrode plate was provided with a portion where the aluminum foil not coated with the positive electrode mixture was exposed, and the portion where the aluminum foil was exposed and the positive electrode lead were joined.
- negative electrode plate As the negative electrode active material, non-graphitizable carbon having an average particle diameter of 15 ⁇ m adjusted by classification or the like and having d002 of 3.79 ⁇ was used.
- a negative electrode mixture paste was prepared in which an appropriate amount of NMP was added to a mixture containing 90% by mass and 10% by mass of non-graphitizable carbon and polyvinylidene fluoride as a binder to adjust the viscosity.
- the negative electrode mixture paste was applied to both sides of a copper foil having a thickness of 15 ⁇ m and dried to prepare a negative electrode plate.
- the negative electrode plate was provided with a portion where the copper foil not coated with the negative electrode mixture was exposed, and the portion where the copper foil was exposed was bonded to the negative electrode plate lead.
- a separator made of a polyethylene microporous film is interposed between the positive electrode plate and the negative electrode plate, and the positive electrode plate and the negative electrode plate are wound to produce a power generation element.
- the power generation element is housed in the battery case from the opening of the battery case, the positive electrode plate lead is joined to the battery lid, the negative electrode plate lead is joined to the negative electrode terminal, and then the battery lid is fitted into the opening of the battery case.
- Non-graphitizable carbon having an average particle diameter of 15 ⁇ m which is the negative electrode active material contained in the negative electrode of Example 1, was converted to non-graphitizable carbon having an average particle diameter of 1, 2, 25 and 27 ⁇ m.
- Examples 12 to 15 non-graphitizable carbon-coated graphite having an average particle size of 19 ⁇ m (Example 16), natural graphite having an average particle size of 10 ⁇ m (Example 17), and the natural graphite and the previously non-graphitizable carbon-coated graphite Batteries of Examples 12 to 18 were produced in the same manner as the battery of Example 1 except that the mixture (Example 18) was used.
- the non-graphitizable carbon-coated graphite used as the negative electrode active material of Example 16 and Example 18 is obtained by coating graphite particles with non-graphitizable carbon by a CVD method, with respect to the total mass of the graphite particles. About 5% of the non-graphitizable carbon covers the graphite surface.
- the natural graphite used as the negative electrode active material of Example 17 and Example 18 is general natural graphite that has not been subjected to coating treatment.
- the mixture of natural graphite and non-graphitizable carbon-coated graphite in Example 18 is a mixture of natural graphite and non-graphitizable carbon-coated graphite at a mass ratio of 40:60.
- Each beaker cell was charged at a constant current and a constant voltage under the conditions of a temperature of 25 ° C., a current density of 0.5 mA / cm 2 , a charging voltage of 0.02 V, a charging time of 24 hours, and a termination current of 0.05 mA.
- the transition of the potential with respect to the lithium metal potential was measured.
- the transition of the potential there is a region where the transition of the potential is relatively smooth in the charging region of 1.0 V or less with respect to the metal lithium potential, and the arithmetic average of the potential of the region is “the potential of the negative electrode during charging”. Adopted as.
- the “potential of the negative electrode during charging” of the hardly graphitized carbon used in Examples 1 to 15 and Comparative Examples 1 to 5 was 0.15V.
- the “negative electrode potential during charging” of natural graphite and non-graphitizable carbon-coated graphite used in Examples 16 to 18 was 0.1V.
- Table 1 shows the amount of gas generated in Examples 1 to 18 and Comparative Examples 1 to 5.
- the amount of gas generated is Less than 6.0 mL gave good results.
- the battery (Comparative Examples 1 and 2) in which the positive electrode potential during charging was 3.7 V or more with respect to the lithium metal potential the result that the gas generation amount was more than 6.0 mL was obtained.
- the charge / discharge capacity during the life test of the battery using the positive electrode containing lithium iron phosphate (Examples 1 and 3 to 18) was about 450 mAh, which was almost as designed.
- the charge / discharge capacity during the life test was about 10% of the design capacity by setting the charge potential of the positive electrode to 3.7 V or less. It was about 45 mAh. From this, when the positive electrode containing lithium iron phosphate is used, the energy density can be further increased.
- a battery in which 0.14-4.0% by mass of 2,4-diethyl-1,3-dithietane-1,1,3,3-tetraone as a cyclic disulfone compound is added to the total mass of the nonaqueous electrolyte.
- the gas generation amount was less than 6.0 mL, and favorable results were obtained.
- the amount of gas generated was less than 4.5 mL, and more favorable results were obtained.
- the battery to which 5.0% by mass was added (Comparative Example 4)
- R1 and R2 in the general formula (1) are an alkyl group having 2 to 4 carbon atoms which may contain hydrogen or a halogen element
- 2- (methylethyl) -1,3-dithietane-1,1,3 , 3-tetraone 2,4-bis (methylethyl) -1,3-dithietane-1,1,3,3-tetraone, 2,4-bis (methylethyl) -1,3-dithietane-1,1 , 3,3-tetraone, 2-butyl-1,3-dithietane-1,1,3,3-tetraone, 2,4-bis (butyl) -1,3-dithietane-1,1,3,3- In the batteries (Examples 8 to 11) to which 1.0% by mass of tetraone was added with respect to the total mass of the nonaqueous electrolyte, suitable results equivalent to those of Example 1
- a cyclic disulfone compound (2,4-dimethyl-1,3-dithietane-1,1,3,3-tetraone) in which R1 and R2 are methyl groups is 1.0 mass relative to the total mass of the nonaqueous electrolyte.
- the amount of gas generated in the battery with 5% added was more than 6.0 mL. This is presumably because when a cyclic disulfone compound in which R1 and R2 are methyl groups is used, the reaction with the negative electrode material is insufficient and a strong protective film cannot be formed.
- the gas generation amount was less than 6.0 mL, and favorable results were obtained.
- the amount of gas generated was less than 4.5 mL, and a suitable result equivalent to that in Example 1 was obtained.
- the gas generation amount is less than 6.0 mL, which is preferable, but the result is that it exceeds 4.5 mL. Obtained.
- the amount of gas generated was less than 4.5 mL, and a suitable result equivalent to Example 1 was obtained.
- a battery using only natural graphite as the negative electrode active material had a gas generation amount of less than 6.0 mL, which was suitable, but a result of more than 4.5 mL was obtained. This is thought to be due to the fact that the negative electrode active material is made of amorphous carbon or the surface of which is coated with amorphous carbon, the reactivity between the negative electrode surface and the electrolyte is lowered, and the amount of gas generated is further reduced. .
- lithium iron phosphate is contained as the positive electrode active material
- the cyclic disulfone compound of the general formula (1) is contained in the non-aqueous electrolyte in an amount of 0.1 to 4.0% by mass with respect to the total mass of the non-aqueous electrolyte.
- the non-aqueous electrolyte secondary battery containing the battery suppresses gas generation inside the battery when the battery is used over a long period of time compared to a non-aqueous electrolyte secondary battery containing an active material other than the positive electrode active material in the positive electrode.
- the negative electrode active material contained in the negative electrode includes a non-graphitizable carbon or a carbon material whose particle surface is coated with non-graphitizable carbon, thereby preventing gas generation inside the battery when the battery is used for a long period of time. It can be greatly suppressed.
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Abstract
Description
1.実施例1の二次電池の作製
(1)正極板の製造
鉄粉とリン酸二水素アンモニウムと炭酸リチウムとをモル比が2:2:1になるように計り取り混合し、その後、溶媒としてのエタノールが加え、さらにボールミルで2時間湿式粉砕混合されることで原料混合粉を得た。この原料混合粉を還元雰囲気下にて、700℃で5時間焼成し、さらに粉砕することで、粒子状の炭素被覆したリン酸鉄リチウムを得た。得られた炭素被覆したリン酸鉄リチウムと、導電助剤のアセチレンブラックと、結着剤のポリフッ化ビニリデンとをそれぞれ90質量%、5質量%および5質量%の割合で混合したものに、NMP(N-メチルピロリドン)を適量加えて粘度を調整し、正極合剤ペーストを作製した。この正極合剤ペーストを厚み20μmのアルミニウム箔の両面に塗布して乾燥させることにより正極板を作製した。正極板には正極合剤が塗布されていないアルミニウム箔が露出した部位を設け、アルミニウム箔が露出した部位と正極リードとを接合した。
負極活物質として、分級等により平均粒径15μmに調整した、d002が3.79オングストロームである難黒鉛化炭素を用いた。前記難黒鉛化炭素と結着剤のポリフッ化ビニリデンとを90質量%および10質量%とした混合物にNMPを適量加えて粘度を調整した負極合剤ペーストを作製した。この負極合剤ペーストを厚み15μmの銅箔の両面に塗布して乾燥させることにより負極板を作製した。負極板には負極合剤が塗布されていない銅箔が露出した部位を設け、銅箔が露出した部位と負極板リードとを接合した。
前記正極板と前記負極板との間にポリエチレン製微多孔膜からなるセパレータを介在させて、正極板と負極板とを巻回することにより発電要素を作製した。発電要素を電池ケースの開口部から電池ケース内に収納して、正極板リードを電池蓋に接合し、負極板リードを負極端子に接合した後に、電池蓋を電池ケースの開口部に勘合させてレーザー溶接で電池ケースと電池蓋とを接合することによって非水電解質が電池ケース内に注液されていない未注液状態の二次電池を作製した。
エチレンカーボネート(EC):ジメチルカーボネート(DMC):エチルメチルカーボネート(EMC)=3:2:5(体積比)の混合溶媒にLiPF6を1mol/Lの濃度で溶解させ、環状ジスルホン化合物の添加量が非水電解質の総質量に対して1.0質量%になるように、2,4-ジエチル-1,3-ジチエタン-1,1,3,3-テトラオンを加えて非水電解質を調製した。この非水電解質を電池ケースの側面に設けた注液口から電池ケース内部に注液した後に、注液口を栓で封口することで実施例1の二次電池を作製した。
実施例1の正極に含まれる正極活物質である炭素被覆したリン酸鉄リチウムを、コバルト酸リチウムまたはスピネル型マンガン酸リチウムにしたこと以外は実施例1の電池と同じ方法にて、実施例2および比較例1~2の電池を作製した。なお、本実験例に使用したコバルト酸リチウムおよびスピネル型マンガン酸リチウムは、一般的な合成法で作製されたものである。すなわち、コバルト酸リチウムは、酸化コバルトと炭酸リチウムとを所定の割合で乾式混合し、空気中にて、700℃で10時間焼成して得られたものである。スピネル型マンガン酸リチウムは、水酸化リチウムと二酸化マンガンを所定の割合で乾式混合し、空気中にて、900℃で8時間焼成して得られたものである。
実施例1の2,4-ジエチル-1,3-ジチエタン-1,1,3,3-テトラオンの添加量を、0.1質量%、0.2質量%、0.5質量%、2.0質量%、4.0質量%、0.0質量%および5.0質量%としたこと以外は実施例1の電池と同じ方法にて実施例3~7および比較例3、4の電池を作製した。
実施例1の2,4-ジエチル-1,3-ジチエタン-1,1,3,3-テトラオンを2,4-ジメチル-1,3-ジチエタン-1,1,3,3-テトラオン、2-(メチルエチル)-1,3-ジチエタンー1,1,3,3-テトラオン、2,4-ビス(メチルエチル)-1,3-ジチエタン-1,1,3,3-テトラオン、2,4-ビス(ブチル)-1,3-ジチエタン-1,1,3,3-テトラオン、および2,4-ジメチル-1,3-ジチエタン-1,1,3,3-テトラオンに代えたこと以外は実施例1の電池と同じ方法にて実施例8~11および比較例5の電池を作製した。
実施例1の負極に含まれる負極活物質である平均粒径15μmの難黒鉛化炭素を、平均粒径1、2、25および27μmの難黒鉛化炭素(実施例12~15)、平均粒径19μmの難黒鉛化炭素被覆黒鉛(実施例16)、平均粒径10μm天然黒鉛(実施例17)、および前記天然黒鉛と前期難黒鉛化炭素被覆黒鉛との混合物(実施例18)にしたこと以外は実施例1の電池と同じ方法にて実施例12~18の電池を作製した。なお、実施例16および実施例18の負極活物質として用いた難黒鉛化炭素被覆黒鉛は、黒鉛粒子にCVD法によって難黒鉛化炭素を被覆したものであり、前記黒鉛粒子の総質量に対して約5%の前記難黒鉛化炭素が前記黒鉛表面を被覆してなるものである。また、実施例17および実施例18の負極活物質として用いた天然黒鉛は、被覆処理をしていない一般的な天然黒鉛である。また、実施例18における天然黒鉛と難黒鉛化炭素被覆黒鉛との混合物は、天然黒鉛と難黒鉛化炭素被覆黒鉛を質量比40:60で混合したものである。
(1)負極の電位測定
各電池に使用した負極におけるリチウム金属電位に対する電位が以下のようにして測定した。すなわち、3極式のビーカーセルをもちいて、作用極に各負極を取り付け、対極および参照極にリチウム金属を取り付け、電解質を加えた。電解質としては、エチレンカーボネート(EC):ジメチルカーボネート(DEC)=5:5(体積比)の混合溶媒に、最終濃度1mol/LとなるようにLiClO4を溶解したものをもちいた。温度25℃、電流密度0.5mA/cm2、充電電圧0.02V、充電時間24時間、終止電流0.05mAの条件で、各ビーカーセルを定電流定電圧充電し、各電池に使用した負極のリチウム金属電位に対する電位の推移を測定した。前記電位の推移においては、金属リチウム電位に対して1.0V以下の充電領域に、電位の推移が比較的平滑な領域があり、前記領域の電位の算術平均を「充電時の負極の電位」として採用した。この結果、実施例1~15および比較例1~5にもちいた難黒鉛化炭素の「充電時の負極の電位」は、0.15Vであった。また、実施例16~18にもちいた天然黒鉛および難黒鉛化炭素被覆黒鉛の「充電時の負極の電位」は、0.1Vであった。
450mAの定電流で所定の電圧まで電池を充電した後、さらに定電圧で充電して、合計3時間充電した。前記の所定電圧は、表1に記載の正極の充電電位となるように、あらかじめ測定した「充電時の負極の電位」に基づいて算出したものである。すなわち、実施例1~15および比較例3~5においては、所定電圧を3.55Vとした。実施例16~18は、3.60Vとした。また、比較例1、2においては、所定電圧を4.15Vとした。充電後に各電池を、450mAの定電流で終止電圧2.6Vまで放電した。60℃の恒温槽中において、この充放電を2000サイクル繰り返した。
上記の60℃サイクル寿命試験の前後の各電池を、流動パラフィンに沈めた状態で電池ケースに穴を開け、放出されたガスの気泡を流動パラフィン中で容器に回収した。この容器内のガスを目盛つきのシリンジで抜き取り、ガスの量をシリンジの目盛で確認した。試験後の電池のガス量から試験前の電池のガス量を差し引いた値を「ガス発生量」とした。
実施例1~18および比較例1~5のガス発生量を表1に示す。
3…正極板(正極)
4…負極板(負極)
5…セパレータ
6…電池ケース
7…電池蓋
10…正極板リード
11…負極板リード
Claims (5)
- 前記正極に、リン酸鉄リチウムが含まれることを特徴とする請求項1記載の非水電解質二次電池。
- 前記負極に、平均粒径2~25μmの非晶質炭素ないし粒子表面が非晶質炭素で被覆された炭素材料が含まれることを特徴とする請求項3に記載の非水電解質二次電池。
- 請求項1、請求項2、請求項3または請求項4に記載の非水電解質二次電池の製造方法。
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022138452A1 (ja) * | 2020-12-21 | 2022-06-30 | 株式会社Gsユアサ | 非水電解質蓄電素子、電子機器及び自動車 |
WO2022210803A1 (ja) * | 2021-03-30 | 2022-10-06 | セントラル硝子株式会社 | 非水電解液、非水電解液電池、及び非水電解液電池の製造方法 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2874226B1 (en) | 2012-11-21 | 2016-10-12 | LG Chem, Ltd. | Lithium secondary battery |
EP2874227B1 (en) * | 2012-11-21 | 2017-09-06 | LG Chem, Ltd. | Lithium secondary battery |
KR102553635B1 (ko) | 2022-09-27 | 2023-07-10 | 주식회사 케이켐비즈 | 양극 활물질, 이를 포함하는 양극 및 이차 전지 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0878052A (ja) * | 1994-09-05 | 1996-03-22 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2005166553A (ja) | 2003-12-04 | 2005-06-23 | Mitsubishi Chemicals Corp | リチウムイオン二次電池用非水系電解液およびリチウムイオン二次電池 |
JP2007265858A (ja) * | 2006-03-29 | 2007-10-11 | Denso Corp | 非水電解液および該電解液を用いた二次電池 |
JP2010135115A (ja) * | 2008-12-02 | 2010-06-17 | Sony Corp | 非水電解質二次電池 |
JP2011023330A (ja) * | 2009-06-18 | 2011-02-03 | Panasonic Corp | 蓄電デバイス用非水溶媒および蓄電デバイス用非水電解液、ならびに、これらを用いた蓄電デバイス、リチウム二次電池および電気二重層キャパシタ |
JP2011086391A (ja) * | 2009-10-13 | 2011-04-28 | Asahi Kasei Chemicals Corp | 非水電解液 |
WO2011136189A1 (ja) * | 2010-04-26 | 2011-11-03 | 三井化学株式会社 | 環状スルホン化合物を含有する非水電解液、及びリチウム二次電池 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4465968B2 (ja) | 2003-03-18 | 2010-05-26 | 日本電気株式会社 | 二次電池用電解液およびそれを用いた二次電池 |
JP4424919B2 (ja) | 2003-03-25 | 2010-03-03 | 大阪瓦斯株式会社 | 非水系二次電池 |
JP4701601B2 (ja) | 2003-10-29 | 2011-06-15 | 日本電気株式会社 | リチウム二次電池用電解液およびそれを用いたリチウム二次電池 |
US8227116B2 (en) | 2003-12-15 | 2012-07-24 | Nec Corporation | Secondary battery |
WO2005057714A1 (ja) | 2003-12-15 | 2005-06-23 | Nec Corporation | 二次電池用電解液およびそれを用いた二次電池 |
JP4345658B2 (ja) | 2003-12-15 | 2009-10-14 | 日本電気株式会社 | 二次電池 |
JP3705801B1 (ja) * | 2004-03-29 | 2005-10-12 | シャープ株式会社 | リチウムイオン二次電池 |
JP5125050B2 (ja) * | 2006-10-10 | 2013-01-23 | 株式会社Gsユアサ | 非水電解質二次電池 |
CN102047488A (zh) | 2008-03-07 | 2011-05-04 | 莱登能源公司 | 具有连接片的电化学电池 |
JP5517032B2 (ja) * | 2008-03-31 | 2014-06-11 | 戸田工業株式会社 | 非水電解質二次電池用オリビン型複合酸化物粒子粉末及びその製造方法、並びに二次電池 |
JP2010050021A (ja) | 2008-08-25 | 2010-03-04 | Bridgestone Corp | 電池用非水電解液及びそれを備えた非水電解液二次電池 |
JP5716269B2 (ja) * | 2008-11-04 | 2015-05-13 | 株式会社Gsユアサ | 非水電解質二次電池用正極材料 |
CN102362381B (zh) | 2009-03-27 | 2015-06-03 | 三菱化学株式会社 | 非水电解质二次电池用负极材料以及使用该负极材料的非水电解质二次电池 |
JP5678539B2 (ja) * | 2009-09-29 | 2015-03-04 | 三菱化学株式会社 | 非水系電解液電池 |
US9306238B2 (en) * | 2011-10-11 | 2016-04-05 | Gs Yuasa International Ltd. | Nonaqueous electrolyte secondary battery and method for producing nonaqueous electrolyte secondary battery |
-
2012
- 2012-10-10 EP EP12856071.1A patent/EP2790261B1/en active Active
- 2012-10-10 KR KR1020147006100A patent/KR102006010B1/ko active IP Right Grant
- 2012-10-10 JP JP2013548059A patent/JP6260279B2/ja active Active
- 2012-10-10 WO PCT/JP2012/006494 patent/WO2013084393A1/ja active Application Filing
- 2012-10-10 US US14/361,545 patent/US9917327B2/en active Active
- 2012-10-10 CN CN201280048448.XA patent/CN103843187B/zh active Active
-
2017
- 2017-12-01 US US15/829,364 patent/US10749213B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0878052A (ja) * | 1994-09-05 | 1996-03-22 | Sanyo Electric Co Ltd | リチウム二次電池 |
JP2005166553A (ja) | 2003-12-04 | 2005-06-23 | Mitsubishi Chemicals Corp | リチウムイオン二次電池用非水系電解液およびリチウムイオン二次電池 |
JP2007265858A (ja) * | 2006-03-29 | 2007-10-11 | Denso Corp | 非水電解液および該電解液を用いた二次電池 |
JP2010135115A (ja) * | 2008-12-02 | 2010-06-17 | Sony Corp | 非水電解質二次電池 |
JP2011023330A (ja) * | 2009-06-18 | 2011-02-03 | Panasonic Corp | 蓄電デバイス用非水溶媒および蓄電デバイス用非水電解液、ならびに、これらを用いた蓄電デバイス、リチウム二次電池および電気二重層キャパシタ |
JP2011086391A (ja) * | 2009-10-13 | 2011-04-28 | Asahi Kasei Chemicals Corp | 非水電解液 |
WO2011136189A1 (ja) * | 2010-04-26 | 2011-11-03 | 三井化学株式会社 | 環状スルホン化合物を含有する非水電解液、及びリチウム二次電池 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2790261A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022138452A1 (ja) * | 2020-12-21 | 2022-06-30 | 株式会社Gsユアサ | 非水電解質蓄電素子、電子機器及び自動車 |
WO2022210803A1 (ja) * | 2021-03-30 | 2022-10-06 | セントラル硝子株式会社 | 非水電解液、非水電解液電池、及び非水電解液電池の製造方法 |
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US10749213B2 (en) | 2020-08-18 |
US20140335426A1 (en) | 2014-11-13 |
EP2790261B1 (en) | 2016-12-21 |
US9917327B2 (en) | 2018-03-13 |
CN103843187B (zh) | 2017-10-24 |
US20180090789A1 (en) | 2018-03-29 |
KR20140106495A (ko) | 2014-09-03 |
JPWO2013084393A1 (ja) | 2015-04-27 |
EP2790261A1 (en) | 2014-10-15 |
EP2790261A4 (en) | 2014-11-12 |
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