WO2010101180A1 - 非水電解液電池 - Google Patents
非水電解液電池 Download PDFInfo
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- WO2010101180A1 WO2010101180A1 PCT/JP2010/053428 JP2010053428W WO2010101180A1 WO 2010101180 A1 WO2010101180 A1 WO 2010101180A1 JP 2010053428 W JP2010053428 W JP 2010053428W WO 2010101180 A1 WO2010101180 A1 WO 2010101180A1
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- positive electrode
- flame retardant
- negative electrode
- electrolyte battery
- electrode plate
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- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
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- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
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- 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
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- H01M50/409—Separators, membranes or diaphragms characterised by the material
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
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- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/449—Separators, membranes or diaphragms characterised by the material having a layered structure
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- 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
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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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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a non-aqueous electrolyte battery, and in particular, a positive electrode plate in which a positive electrode mixture containing an active material is applied to a current collector, and a negative electrode in which a negative electrode mixture containing an active material is applied to a current collector.
- the present invention relates to a non-aqueous electrolyte battery in which a plate is disposed via a porous separator.
- Alkaline storage batteries, lead storage batteries, and the like are known as secondary batteries in which the electrolytic solution is an aqueous solution system.
- non-aqueous electrolyte batteries typified by lithium secondary batteries, which are small, light, and have high energy density, are in widespread use.
- the electrolyte used for the nonaqueous electrolyte battery contains an organic solvent such as dimethyl ether. Since organic solvents are flammable, battery behavior may become severe due to combustion of battery components or thermal decomposition of active materials when battery temperature rises during battery abnormalities such as short circuits or when dropped in fire .
- the techniques disclosed in Japanese Patent Application Laid-Open Nos. 4-184870 and 2006-127839 are techniques for incombusting the non-aqueous electrolyte containing a flame retardant and the battery constituent material itself of the separator, and the battery itself. It is difficult to make incombustible.
- this technology is applied to a lithium secondary battery, the lithium secondary battery generates a large amount of heat due to the thermal decomposition reaction of the active material, and therefore a large amount of flame retardant is required to suppress the temperature rise.
- a separator containing a large amount of a flame retardant may cause a problem that it is difficult to maintain the strength originally required for the separator.
- an object of the present invention is to provide a non-aqueous electrolyte battery capable of calming the battery behavior when the battery is abnormal and ensuring safety.
- the present invention provides a positive electrode plate in which a positive electrode mixture containing an active material is applied to a current collector, and a negative electrode plate in which a negative electrode mixture containing an active material is applied to a current collector.
- a non-aqueous electrolyte battery in which a porous separator is disposed, at least one of the positive electrode plate, the negative electrode plate, and the separator includes a flame retardant that decomposes at a predetermined temperature. It is characterized in that a drug layer is provided.
- the flame retardant is present in the vicinity of the active material by disposing a flame retardant layer containing a flame retardant on at least one of the positive electrode plate, the negative electrode plate, and the separator. Therefore, since the flame retardant decomposes at a predetermined temperature and suppresses the combustion of the battery constituent material when the temperature rises due to battery abnormality, the battery behavior can be moderated and safety can be ensured.
- the flame retardant layer preferably has lithium ion permeability.
- the flame retardant layer may be made porous.
- the flame retardant is preferably solid in a temperature environment of 80 ° C. or lower.
- Such a flame retardant can be a phosphazene compound.
- the flame retardant is contained at a ratio of 10 wt% or more with respect to the positive electrode mixture. At this time, you may make it contain a flame retardant in the ratio of 20 wt% or less with respect to positive electrode mixture.
- the active material contained in the positive electrode mixture can be a lithium transition metal double oxide.
- the active material contained in the negative electrode mixture may be a carbon material capable of occluding and releasing lithium ions.
- the battery capacity of the non-aqueous electrolyte battery may be 3 Ah or more.
- the flame retardant is disposed in the vicinity of the active material by disposing the flame retardant layer containing the flame retardant on at least one of the positive electrode plate, the negative electrode plate, and the separator. Because it exists, when the temperature rises due to battery abnormalities, the flame retardant decomposes at a predetermined temperature and suppresses the combustion of the battery constituent material, so that the battery behavior can be moderated and safety can be secured. be able to.
- a cylindrical lithium ion secondary battery 20 (non-aqueous electrolyte battery) according to this embodiment has a bottomed cylindrical battery container 7 made of nickel-plated steel. .
- the battery container 7 accommodates an electrode group 6 in which strip-like positive and negative electrode plates are wound in a spiral shape through a separator.
- a hollow cylindrical shaft core 1 made of polypropylene resin is used at the winding center of the electrode group 6.
- a positive electrode current collecting ring 4 of an annular conductor for collecting the electric potential from the positive electrode plate is disposed substantially on the extension line of the shaft core 1.
- the positive electrode current collecting ring 4 is fixed to the upper end portion of the shaft core 1.
- the edge part of the positive electrode lead piece 2 led out from the positive electrode plate is joined by ultrasonic welding to the peripheral edge of the flange part integrally protruding from the periphery of the positive electrode current collecting ring 4.
- a disc-shaped battery lid 11 is provided that incorporates a safety valve and serves as a positive electrode external terminal.
- the upper part of the positive electrode current collecting ring 4 is connected to the battery lid 11 via a conductor lead.
- an annular conductor negative electrode current collecting ring 5 for collecting the electric potential from the negative electrode plate is disposed below the electrode group 6.
- the outer peripheral surface of the lower end portion of the shaft core 1 is fixed to the inner peripheral surface of the negative electrode current collecting ring 5.
- the end of the negative electrode lead piece 3 led out from the negative electrode plate is joined to the outer peripheral edge of the negative electrode current collecting ring 5 by welding.
- the lower part of the negative electrode current collection ring 5 is connected to the inner bottom part of the battery container 7 through a conductor lead.
- the dimensions of the battery container 7 are set to an outer diameter of 40 mm and an inner diameter of 39 mm.
- the battery lid 11 is caulked and fixed to the upper part of the battery container 7 via an insulating and heat resistant EPDM resin gasket 10. For this reason, the inside of the lithium ion secondary battery 20 is sealed.
- a non-aqueous electrolyte is injected into the battery container 7.
- the non-aqueous electrolyte includes lithium hexafluorophosphate (LiPF 6) as a lithium salt in a mixed solvent of ethylene carbonate (EC), dimethyl carbonate (DMC), and diethyl carbonate (DEC) in a volume ratio of 1: 1: 1. ) Is dissolved at 1 mol / liter.
- the lithium ion secondary battery 20 is given a battery function by performing initial charging at a predetermined voltage and current.
- the positive electrode plate and the negative electrode plate are wound around the shaft core 1 via a polyethylene separator W5 through which lithium ions can pass so that the two electrode plates do not directly contact each other.
- the thickness of the separator W5 is set to 30 ⁇ m.
- the positive electrode lead piece 2 and the negative electrode lead piece 3 are arranged on both end surfaces of the electrode group 6 opposite to each other.
- the diameter of the electrode group 6 is set to 38 ⁇ 0.5 mm by adjusting the lengths of the positive electrode plate, the negative electrode plate, and the separator W5. Insulation coating is applied to the entire circumference of the collar peripheral surface of the electrode group 6 and the positive electrode current collecting ring 4 in order to prevent electrical contact between the electrode group 6 and the battery container 7.
- an adhesive tape in which a hexamethacrylate adhesive is applied to one side of a polyimide base material is used.
- the pressure-sensitive adhesive tape is wound one or more times from the collar surface to the outer circumferential surface of the electrode group 6. The number of turns is adjusted so that the maximum diameter portion of the electrode group 6 becomes an insulating coating existing portion, and the maximum diameter is set slightly smaller than the inner diameter of the battery container 7.
- the positive electrode plate constituting the electrode group 6 has an aluminum foil W1 as a positive electrode current collector.
- the thickness of the aluminum foil W1 is set to 20 ⁇ m.
- a positive electrode mixture containing a lithium transition metal double oxide as a positive electrode active material is applied substantially evenly and uniformly to form a positive electrode mixture layer W2. That is, the thickness of the applied positive electrode mixture layer W2 is substantially uniform, and the positive electrode mixture is substantially uniformly dispersed in the positive electrode mixture layer W2.
- the lithium transition metal double oxide either a manganese nickel cobalt double acid powder having a layered crystal structure or a lithium manganate powder having a spinel crystal structure is used.
- Examples of the positive electrode mixture include 8 wt% of scaly graphite and 2 wt% of acetylene black as a conductive material and 85 wt% (wt%) of a lithium transition metal double oxide and a polyfluoride as a binder (binder). 5 wt% of vinylidene chloride (hereinafter abbreviated as PVdF) is blended.
- PVdF vinylidene chloride
- NMP dispersion solvent N-methyl-2-pyrrolidone
- An uncoated portion of a positive electrode mixture having a width of 30 mm is formed on the side edge on one side in the longitudinal direction of the aluminum foil W1.
- the uncoated part is cut out in a comb shape, and the positive electrode lead piece 2 is formed in the notch remaining part.
- the interval between the adjacent positive electrode lead pieces 2 is set to 20 mm, and the width of the positive electrode lead piece 2 is set to 5 mm.
- the positive electrode plate is pressed after drying and cut into a width of 80 mm.
- a flame retardant layer W6 containing a flame retardant is formed on the surface of the positive electrode mixture layer W2, that is, on both surfaces of the positive electrode plate.
- the flame retardant layer W6 is made porous by blending a pore forming agent (pore forming agent) so as to have lithium ion permeability.
- a pore forming agent pore forming agent
- the flame retardant a phosphazene compound having phosphorus and nitrogen as a basic skeleton is used.
- the blending ratio of the flame retardant is set to 1 wt% or more with respect to the positive electrode mixture.
- aluminum oxide is used as the pore forming agent. The mixing ratio of aluminum oxide can be adjusted according to the ratio of the porosity formed in the flame retardant layer W6.
- This flame retardant layer W6 is formed as follows. That is, aluminum oxide is dispersed in an NMP solution in which a phosphazene compound and a PVdF binder are dissolved. The obtained dispersion solution is applied to the surface of the positive electrode mixture layer W2, dried, and then subjected to press treatment to adjust the thickness of the entire positive electrode plate.
- the phosphazene compound is a cyclic compound represented by the general formula (NPR 2 ) 3 or (NPR 2 ) 4 .
- R in the general formula represents a halogen element such as fluorine or chlorine or a monovalent substituent.
- Monovalent substituents include alkoxy groups such as methoxy and ethoxy groups, aryloxy groups such as phenoxy and methylphenoxy groups, alkyl groups such as methyl and ethyl groups, aryl groups such as phenyl and tolyl groups, An amino group containing a substituted amino group such as a methylamino group, an alkylthio group such as a methylthio group or an ethylthio group, and an arylthio group such as a phenylthio group can be given.
- a solid phosphazene compound is used in a temperature environment of 80 ° C. or lower. Further, these phosphazene compounds are each decomposed at a predetermined temperature.
- the negative electrode plate has a rolled copper foil W3 as a negative electrode current collector.
- the thickness of the rolled copper foil W3 is set to 10 ⁇ m.
- a negative electrode mixture containing a carbon material capable of occluding and releasing lithium ions as a negative electrode active material is applied to both surfaces of the rolled copper foil W3 substantially uniformly and homogeneously in the same manner as the positive electrode plate, and the negative electrode mixture layer W4. Is formed.
- amorphous carbon powder is used for the carbon material of the negative electrode active material.
- 10 wt% of PVdF is blended as a binder with respect to 90 wt% of the amorphous carbon powder.
- NMP as a dispersion solvent When applying the negative electrode mixture to the rolled copper foil W3, NMP as a dispersion solvent is used. An uncoated portion of a negative electrode mixture having a width of 30 mm is formed on the side edge on one side in the longitudinal direction of the rolled copper foil W3, and a negative electrode lead piece 3 is formed. The interval between the adjacent negative electrode lead pieces 3 is set to 20 mm, and the width of the negative electrode lead piece 3 is set to 5 mm. The negative electrode plate is pressed after drying and cut into a width of 86 mm. The length of the negative electrode plate is such that when the positive electrode plate and the negative electrode plate are wound, the positive electrode plate does not protrude from the negative electrode plate in the winding direction at the innermost winding and outermost winding.
- the width of the negative electrode mixture layer W4 (mixture application portion) is such that the positive electrode mixture layer W2 does not protrude from the negative electrode mixture layer W4 in the direction perpendicular to the winding direction. 6 mm longer.
- lithium ion secondary battery 20 manufactured according to the present embodiment describes together about the lithium ion secondary battery of the comparative example produced for the comparison.
- Example 1 aluminum oxide is dispersed in an NMP solution in which a phosphazene compound as a flame retardant (trade name Phoslite (registered trademark) manufactured by Bridgestone Corporation, solid, decomposition temperature of 250 ° C. or higher) and PVdF are dissolved. A dispersion solution was prepared. This dispersion was applied to the surface of the positive electrode mixture layer W2. At this time, the blending ratio of the flame retardant to the positive electrode mixture was adjusted by adjusting the coating amount of the dispersion solution. As shown in Table 1 below, in Example 1, the blending ratio of the flame retardant was adjusted to 1 wt%.
- a phosphazene compound as a flame retardant trade name Phoslite (registered trademark) manufactured by Bridgestone Corporation, solid, decomposition temperature of 250 ° C. or higher
- PVdF phosphazene compound as a flame retardant
- a dispersion solution was prepared. This dispersion was applied to the surface of the positive electrode mixture layer W2. At this time,
- Example 2 to Example 9 As shown in Table 1, Examples 2 to 9 were the same as Example 1 except that the blending ratio of the flame retardant was changed. That is, the blending ratio of the flame retardant is 2 wt% in Example 2, 3 wt% in Example 3, 5 wt% in Example 4, 6 wt% in Example 5, 8 wt% in Example 6, and in Example 7. It was adjusted to 10 wt%, 15 wt% in Example 8, and 20 wt% in Example 9, respectively.
- Example 1 As shown in Table 1, in the comparative example, the same procedure as in Example 1 was performed except that the flame retardant layer W6 was not formed on the surface of the positive electrode mixture layer W2. That is, the lithium ion secondary battery of the comparative example is a conventional battery.
- test About the lithium ion secondary battery of each Example and the comparative example, the overcharge test was done and evaluated. In the overcharge test, a thermocouple was placed in the center of the battery, and the temperature of the battery surface when each lithium ion secondary battery was continuously charged at a current value of 0.5 C was measured. The maximum battery surface temperature in the overcharge test is shown in Table 2 below.
- the battery surface maximum temperature reached 482.9 ° C. by the overcharge test.
- the battery surface maximum temperature is lowered, and the blending ratio of the flame retardant is increased.
- the rate at which the battery surface maximum temperature decreases also increases. If the flame retardant is blended in an amount of 1 wt% with respect to the positive electrode mixture (Example 1), the battery surface maximum temperature can be lowered as compared with the lithium ion secondary battery of the comparative example.
- the maximum battery surface temperature is suppressed to about 150 ° C. or less. This can be achieved by setting the blending ratio of the flame retardant to 10 wt% or more (Example 7).
- a flame retardant layer W6 containing a phosphazene compound as a flame retardant is formed on the surface of the positive electrode mixture layer W2 of the positive electrode plate constituting the electrode group 6.
- This phosphazene compound decomposes at a predetermined temperature in a high temperature environment such as when the battery is abnormal.
- the flame retardant layer W6 is formed on the surface of the positive electrode mixture layer W2, the phosphazene compound is present in the vicinity of the positive electrode active material.
- the lithium ion secondary battery 20 when the lithium ion secondary battery 20 is exposed to an abnormally high temperature environment or when a battery abnormality occurs, if the battery temperature rises due to the thermal decomposition reaction or chain reaction of the positive electrode active material, the phosphazene compound becomes Decompose. Thereby, since combustion of a battery constituent material is suppressed, the battery behavior of the lithium ion secondary battery 20 can be moderated and safety can be ensured.
- the flame retardant layer W6 is porous and is made porous. For this reason, during normal battery use (charging / discharging), lithium ions can sufficiently move between the positive and negative electrode plates, and battery performance can be ensured. Furthermore, since the flame retardant layer W6 is formed on the surface of the positive electrode mixture layer W2, the mixing ratio of the positive electrode active material that causes the electrode reaction is secured, so the capacity and output of the lithium ion secondary battery 20 Can be secured.
- a solid phosphazene compound is used as a flame retardant in a temperature environment of 80 ° C. or lower. For this reason, since the phosphazene compound is not decomposed and held as the flame retardant layer W6 during normal battery use, the battery performance of the lithium ion secondary battery 20 can be ensured.
- the flame retardant layer W6 is formed on the surface of the positive electrode mixture layer W2, that is, both surfaces of the positive electrode plate is shown, but the present invention is not limited to this.
- the example which forms the flame retardant layer W6 using PVdF as a binder was shown, this invention is not limited to this, The flame retardant layer W6 can be formed. Any binder can be used.
- blends an aluminum oxide as a pore making material was shown at the time of formation of the flame retardant layer W6,
- This invention is not limited to this.
- the flame retardant layer W6 only needs to be porous so that lithium ions can pass during normal charge / discharge, and the pore forming agent to be used is not limited.
- blended with the flame retardant layer W6 to 1 weight% or more was shown (Example 1-Example 9). If the blending ratio of the flame retardant is less than 1% by weight, it is difficult to suppress the temperature rise due to the thermal decomposition reaction. Conversely, if it exceeds 20% by weight, the thickness of the flame retardant layer W6 is relatively It becomes larger and the capacity and output are reduced. For this reason, it is preferable that the blending ratio of the flame retardant is in the range of 1 to 20% by weight. In consideration of suppressing further temperature increase due to the chain reaction of the thermal decomposition reaction, the blending ratio of the flame retardant is more preferably 10 wt% or more.
- the phosphazene compound is exemplified as the flame retardant, but the present invention is not limited to this, and the temperature rises due to the thermal decomposition reaction of the active material or its chain reaction by decomposition at a predetermined temperature. What is necessary is just to be able to suppress this. Moreover, it is also possible to use compounds other than the compound illustrated by this embodiment also about a phosphazene compound.
- the cylindrical lithium ion secondary battery 20 mounted on the hybrid vehicle is illustrated, but the present invention is not limited to this, and large lithium ions having a battery capacity exceeding about 3 Ah. It can be applied to a secondary battery.
- the electrode group 6 which wound the positive electrode plate and the negative electrode plate was illustrated, this invention is not limited to this, For example, the electrode which laminated
- the battery shape may be a square shape in addition to the cylindrical shape.
- the type of the positive electrode active material and the negative electrode active material, the composition of the non-aqueous electrolyte, and the like are not particularly limited.
- the example using the lithium transition metal double oxide of either manganese nickel cobalt double acid powder which has a layered crystal structure, or lithium manganate powder which has a spinel crystal structure was shown for the positive electrode active material.
- the positive electrode active material that can be used in the present invention may be a lithium transition metal double oxide.
- the present invention is not limited to the lithium ion secondary battery, and it goes without saying that the present invention can be applied to a nonaqueous electrolyte battery using a nonaqueous electrolyte.
- the present invention contributes to the manufacture and sale of non-aqueous electrolyte batteries in order to provide a non-aqueous electrolyte battery that can moderate the battery behavior and ensure safety when the battery is abnormal.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
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Abstract
Description
実施例1では、難燃化剤のホスファゼン化合物(株式会社ブリヂストン製、商品名ホスライト(登録商標)、固体状、分解温度250℃以上)とPVdFとを溶解させたNMP溶液に酸化アルミニウムを分散させ分散溶液を調製した。この分散溶液を正極合剤層W2の表面に塗布した。このとき、分散溶液の塗布量を調整することで、正極合剤に対する難燃化剤の配合割合を調整した。下表1に示すように、実施例1では、難燃化剤の配合割合を1wt%の割合に調整した。
表1に示すように、実施例2~実施例9では、難燃化剤の配合割合を変える以外は実施例1と同様にした。すなわち、難燃化剤の配合割合は、実施例2では2wt%、実施例3では3wt%、実施例4では5wt%、実施例5では6wt%、実施例6では8wt%、実施例7では10wt%、実施例8では15wt%、実施例9では20wt%、にそれぞれ調整した。
表1に示すように、比較例では、正極合剤層W2の表面に難燃化剤層W6を形成しない以外は実施例1と同様にした。すなわち、比較例のリチウムイオン二次電池は従来の電池である。
各実施例および比較例のリチウムイオン二次電池について、過充電試験を行い評価した。過充電試験では、電池中央部に熱電対を配置し、各リチウムイオン二次電池を0.5Cの電流値で充電し続けたときの電池表面の温度を測定した。過充電試験における電池表面最高温度を下表2に示す。
次に、本実施形態のリチウムイオン二次電池20の作用等について説明する。
Claims (10)
- 活物質を含む正極合剤が集電体に塗着された正極板と、活物質を含む負極合剤が集電体に塗着された負極板とが多孔質セパレータを介して配置された非水電解液電池において、前記正極板、負極板およびセパレータの少なくとも1種の片面または両面に、所定温度で分解する難燃化剤を含む難燃化剤層が配されたことを特徴とする非水電解液電池。
- 前記難燃化剤層はリチウムイオン透過性を有することを特徴とする請求項1に記載の非水電解液電池。
- 前記難燃化剤層は多孔化されていることを特徴とする請求項2に記載の非水電解液電池。
- 前記難燃化剤は80℃以下の温度環境で固体であることを特徴とする請求項1に記載の非水電解液電池。
- 前記難燃化剤はホスファゼン化合物であることを特徴とする請求項4に記載の非水電解液電池。
- 前記難燃化剤は前記正極合剤に対して10wt%以上の割合で含有されていることを特徴とする請求項1に記載の非水電解液電池。
- 前記難燃化剤は前記正極合剤に対して20wt%以下の割合で含有されていることを特徴とする請求項6に記載の非水電解液電池。
- 前記正極合剤に含まれる活物質は、リチウム遷移金属複酸化物であることを特徴とする請求項1に記載の非水電解液電池。
- 前記負極合剤に含まれる活物質は、リチウムイオンを吸蔵放出可能な炭素材であることを特徴とする請求項8に記載の非水電解液電池。
- 電池容量が3Ah以上であることを特徴とする請求項9に記載の非水電解液電池。
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US13/061,180 US20120003514A1 (en) | 2009-03-03 | 2010-03-03 | Non-aqueous electrolyte battery |
EP10748774A EP2405519A4 (en) | 2009-03-03 | 2010-03-03 | NON-WATER ELECTROLYTIC CELL |
JP2011502780A JP5509193B2 (ja) | 2009-03-03 | 2010-03-03 | 非水電解液電池 |
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EP (1) | EP2405519A4 (ja) |
JP (1) | JP5509193B2 (ja) |
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Also Published As
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CN102160229A (zh) | 2011-08-17 |
KR20110131165A (ko) | 2011-12-06 |
EP2405519A1 (en) | 2012-01-11 |
EP2405519A4 (en) | 2012-08-29 |
JP5509193B2 (ja) | 2014-06-04 |
US20120003514A1 (en) | 2012-01-05 |
JPWO2010101180A1 (ja) | 2012-09-10 |
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