JP2007059213A - Nonaqueous electrolyte battery and negative active material - Google Patents

Nonaqueous electrolyte battery and negative active material Download PDF

Info

Publication number
JP2007059213A
JP2007059213A JP2005243361A JP2005243361A JP2007059213A JP 2007059213 A JP2007059213 A JP 2007059213A JP 2005243361 A JP2005243361 A JP 2005243361A JP 2005243361 A JP2005243361 A JP 2005243361A JP 2007059213 A JP2007059213 A JP 2007059213A
Authority
JP
Japan
Prior art keywords
negative electrode
active material
lithium
positive electrode
silicon oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2005243361A
Other languages
Japanese (ja)
Other versions
JP4533822B2 (en
Inventor
Hirotaka Inagaki
Tomokazu Morita
Norio Takami
朋和 森田
浩貴 稲垣
則雄 高見
Original Assignee
Toshiba Corp
株式会社東芝
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, 株式会社東芝 filed Critical Toshiba Corp
Priority to JP2005243361A priority Critical patent/JP4533822B2/en
Publication of JP2007059213A publication Critical patent/JP2007059213A/en
Application granted granted Critical
Publication of JP4533822B2 publication Critical patent/JP4533822B2/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/48Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/485Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of or comprising active material
    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/131Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries

Abstract

PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte battery excellent in initial charge / discharge efficiency.
A nonaqueous electrolyte battery of the present invention includes an exterior member, a positive electrode housed in the exterior member, a carbonaceous material housed in the exterior member, and a silicon oxide dispersed in the carbonaceous material, A negative electrode including composite particles having silicon dispersed in silicon oxide, a lithium silicate phase mainly contained in silicon oxide and including Li4SiO4, and a nonaqueous electrolyte filled in the exterior member; It is characterized by comprising.
[Selection] Figure 1

Description

  The present invention relates to a lithium ion non-aqueous electrolyte battery and a negative electrode active material.

  The inventors of the present invention have disclosed a composite particle in which fine silicon monoxide and a carbonaceous material are combined and fired and dispersed in the carbonaceous material in a state where microcrystalline silicon is included in a silicon oxide phase that is firmly bonded to silicon. And found that it is possible to achieve higher capacity and improved cycle characteristics.

Here, it is known that the transport of lithium ions is promoted using a negative electrode active material in which a lithium-containing oxide such as Li2SiO3 or Li4SiO4 is dispersed (see Patent Document 2).
JP2004-119176 JP2005-11801

  As a result of intensive studies by the present inventors, it was found that the composite particles were inferior in the initial charge / discharge efficiency for the following reasons. In the composite particles, silicon that mainly stores lithium is included in a silicon oxide phase that is highly reactive with lithium. At the time of the first charge, lithium ions react with the silicon oxide phase to generate lithium silicate when diffusing the silicon oxide phase. Lithium contained in the lithium silicate does not contribute to the subsequent charge / discharge.

  In view of the above circumstances, an object of the present invention is to provide a nonaqueous electrolyte battery and a negative electrode active material excellent in initial charge / discharge efficiency.

  The nonaqueous electrolyte battery of the present invention includes an exterior member, a positive electrode housed in the exterior member, a carbonaceous material housed in the exterior member, a silicon oxide dispersed in the carbonaceous material, and a silicon oxide And a negative electrode comprising composite particles having silicon dispersed in silicon oxide and a lithium silicate phase mainly composed of Li4SiO4 contained in silicon oxide, and a nonaqueous electrolyte filled in the exterior member. It is characterized by that.

  The negative electrode active material of the present invention has a carbonaceous material, silicon oxide dispersed in the carbonaceous material, silicon dispersed in the silicon oxide, and a lithium silicate phase contained in the silicon oxide. It is characterized by.

  The present invention can provide a nonaqueous electrolyte battery and a negative electrode active material excellent in initial charge / discharge efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol shall be attached | subjected to a common structure through embodiment, and the overlapping description is abbreviate | omitted. Each figure is a schematic diagram for promoting explanation and understanding of the invention, and its shape, dimensions, ratio, and the like are different from those of an actual device. However, these are in consideration of the following explanation and known techniques. The design can be changed as appropriate.

(First embodiment)
The structure of an example of a single battery according to the first embodiment will be described with reference to FIGS. In FIG. 1, the cross-sectional schematic diagram of the flat type nonaqueous electrolyte secondary battery concerning 1st embodiment is shown. FIG. 2 is a partial cross-sectional schematic diagram showing in detail a portion surrounded by a circle shown by A in FIG.

  As shown in FIG. 1, a flat wound electrode group 6 is accommodated in the exterior member 7. The wound electrode group 6 has a structure in which the positive electrode 3 and the negative electrode 4 are wound in a spiral shape with a separator 5 interposed therebetween. The nonaqueous electrolyte is held in the wound electrode group 6.

  As shown in FIG. 2, the negative electrode 4 is located on the outermost periphery of the wound electrode group 6, and the separator 5, the positive electrode 3, the separator 5, the negative electrode 4, the separator 5, and the positive electrode 3 are disposed on the inner peripheral side of the negative electrode 4. The positive electrode 3 and the negative electrode 4 are alternately stacked with the separator 5 interposed therebetween as in the separator 5. The negative electrode 4 includes a negative electrode current collector 4a and a negative electrode active material-containing layer 4b supported on the negative electrode current collector 4a. In the portion located on the outermost periphery of the negative electrode 4, the negative electrode active material-containing layer 4b is formed only on one surface of the negative electrode current collector 4a. The positive electrode 3 includes a positive electrode current collector 3a and a positive electrode active material-containing layer 3b supported on the positive electrode current collector 3a.

  As shown in FIG. 1, the strip-like positive electrode terminal 1 is electrically connected to the positive electrode current collector 3 a in the vicinity of the outer peripheral end of the wound electrode group 6. On the other hand, the strip-like negative electrode terminal 2 is electrically connected to the negative electrode current collector 4 a in the vicinity of the outer peripheral end of the wound electrode group 6. The tips of the positive electrode terminal 1 and the negative electrode terminal 2 are drawn out from the same side of the exterior member 7.

  Hereinafter, the negative electrode, the nonaqueous electrolyte, the positive electrode, the separator, the exterior member, the positive electrode terminal, and the negative electrode terminal will be described in detail.

1) Negative Electrode The negative electrode includes a negative electrode current collector and a negative electrode layer that is supported on one or both surfaces of the negative electrode current collector and includes a negative electrode active material, a negative electrode conductive agent, and a binder.

  As shown in FIG. 7, the negative electrode active material includes a carbonaceous material, silicon oxide dispersed in the carbonaceous material, silicon dispersed in the silicon oxide, and a lithium silicate phase contained in the silicon oxide. And composite particles having the following characteristics. “Dispersed” indicates a state in which a plurality of phases are scattered in the matrix structure.

  The silicon phase can insert and desorb a large amount of lithium, greatly increasing the capacity of the negative electrode active material. Since the silicon phase is dispersed in the silicon oxide phase, the expansion and contraction of the silicon phase associated with the insertion and desorption of lithium can be alleviated to prevent the active material particles from being pulverized. The silicon oxide phase can be firmly bonded to the silicon phase and maintain the particle structure as a buffer for holding the miniaturized silicon phase. The carbonaceous material phase can ensure conductivity that is important as a negative electrode active material.

  The lithium silicate phase is mainly contained in the silicon oxide phase. For this reason, the lithium silicate synthesis reaction by lithium and silicon oxide generated at the first charge can be suppressed, and the first charge / discharge efficiency can be improved.

  The lithium silicate phase is preferably in a content of 0.05 wt% to 6 wt% with respect to the composite particles.

  Within this range, the effect of improving the initial charge / discharge efficiency becomes significant.

  Further, the content of the lithium silicate phase is particularly preferably 0.9 wt% or more and 2.8 wt% or less with respect to the composite particles. In this range, the effect of improving large current characteristics by improving lithium ion conductivity is particularly great.

  Examples of the lithium silicate phase include Li2SiO3 (orthorhombic orthorhombic), Li4SiO4 (monoclinic monoclinic), Li2Si2O5, Li8SiO6, and the like.

  The lithium silicate phase is preferably composed mainly of Li4SiO4.

  This is because Li4SiO4 is particularly chemically stable and has lithium ion conductivity with respect to Li2SiO3 and the like, thereby improving lithium diffusion in the active material and improving large current characteristics.

  When the production method described later is used, the main component of the lithium silicate phase is Li4SiO4. On the other hand, when the composite particles shown in Patent Document 1 are charged and discharged, a lithium silicate phase mainly composed of Li2SiO3 is generated.

  The lithium silicate phase can be confirmed by the diffraction peak of the lithium silicate appearing in the diffraction pattern obtained from the powder X-ray diffraction measurement of the composite particles. Dispersion state (size, position) is observed by electron microscope, energy dispersive X-ray fluorescence analysis (EDX), energy dispersive X-ray spectroscopy (EDS), electron beam energy loss spectrum method (EELS), Auger spectroscopic analysis Can be observed directly.

  The silicon phase has a large expansion and contraction when occluding and releasing lithium, and it is preferable that the silicon phase be dispersed as finely as possible in order to relieve this stress. Specifically, it is preferably dispersed from a cluster of several nm to a size of 300 nm or less at the maximum.

  The silicon oxide phase may have an amorphous or crystalline structure, but it is preferable that the silicon oxide phase is uniformly distributed in the active material particles so as to bind to and include or hold the silicon phase.

  The size of the silicon oxide phase is preferably 50 nm or more and 5 μm or less. The silicon oxide phase retains the silicon fine particle phase, but since SiO2 has low electronic conductivity, it becomes difficult to ensure the electronic conductivity to the internal silicon fine particle phase when the size of the silicon oxide phase is increased. As a result, the capacity is reduced. Furthermore, if the size of the oxide phase is large, it is difficult to uniformly disperse the lithium silicate phase, and the effect of addition is reduced. On the other hand, if it is too small, the effect of retaining the silicon phase is lowered, and as a result, the cycle characteristics are lowered.

  The carbonaceous material is preferably graphite, hard carbon, soft carbon, amorphous carbon, or acetylene black. Preferably, graphite or a mixture of graphite and hard carbon is good. Graphite is preferable in terms of increasing the conductivity of the active material. Hard carbon has a great effect of covering the entire active material and relaxing expansion and contraction. The carbonaceous material preferably has a shape including a silicon phase and a silicon oxide phase.

The negative electrode active material preferably has a particle size of 5 μm to 100 μm, or a specific surface area of 0.5 m 2 / g to 10 m 2 / g. The particle size and specific surface area of the active material affect the rate of lithium insertion and desorption reaction, and have a great influence on the negative electrode characteristics. However, values within this range can stably exhibit the characteristics.

Further, when the particle size is 5 μm or more and 25 μm or less or the specific surface area is 1.5 m 2 / g or more and 10 m 2 / g or less, diffusion of lithium to the active material is easy to proceed at the first charge, and the utilization rate of the active material is increased. . However, at this time, lithium silicate is easily generated by the reaction between lithium and the silicon oxide phase, which is a side reaction. For this reason, the effect of improving the initial charge / discharge efficiency by suppressing the generation of the lithium silicate of the present invention is increased.

  Moreover, it is preferable that the half value width of the diffraction peak of Si (220) plane in the powder X-ray diffraction measurement of a negative electrode active material is 1.5 degree or more and 8.0 degrees or less. When the angle is 1.5 ° or more, the expansion and contraction of the active material, which becomes more noticeable as the crystal grains become larger, can be easily avoided. When the angle is larger than 8.0 °, the generation of the silicon phase is not sufficient, and the cycle deterioration is increased due to the remaining SiO. Since the lithium silicate phase promotes the precipitation of the silicon phase, it is effective in reducing residual SiO.

  As for the ratio of the silicon phase, silicon oxide phase, and carbonaceous material, the molar ratio of Si and C is preferably in the range of 0.2 ≦ Si / C ≦ 2. The quantitative relationship between the silicon phase and the silicon oxide phase is that the molar ratio is 0.6 ≦ silicon phase / silicon oxide ≦ 1.5, so that a large capacity and good cycle characteristics can be obtained as the negative electrode active material. This is desirable.

  Next, the manufacturing method of a negative electrode active material is demonstrated.

  The negative electrode active material can be synthesized by mixing raw materials by a mechanical treatment in a solid phase or a liquid phase, a stirring treatment, and the like, and then performing a firing treatment.

  Examples of the dynamic compounding process include a turbo mill, a ball mill, a mechano-fusion, and a disk mill.

As the Si raw material, SiO x (0.8 ≦ X ≦ 1.5) is preferably used. In particular, the use of SiO (X ≒ 1) makes the silicon phase and silicon oxide It is desirable to make the quantitative relationship of the phases a desirable ratio.

The shape of SiO x may be a lump, but it is preferably a fine powder for shortening the processing time, and the average particle size is preferably 100 μm or less and 0.5 μm or more. When the average particle size exceeds 100 μm, the silicon phase becomes an insulator silicon oxide at the center of the particle. The phase is thickly covered, and the lithium insertion / extraction reaction of the active material may be inhibited. On the other hand, when the average particle size is less than 0.5 μm, the surface area increases, so the particle surface becomes silicon oxide. The composition may become unstable.

  As the organic material, at least one of a carbon material such as graphite, coke, low-temperature calcined charcoal, and pitch and a carbon material precursor can be used. In particular, a material that melts by heating, such as pitch, is melted during the milling process and does not proceed well into a composite state.

  In order to produce lithium silicate, lithium salts such as lithium carbonate, lithium oxide, lithium hydroxide, lithium oxalate, and lithium chloride can be used as a raw material. By the subsequent heat treatment, the silicon oxide phase and the lithium salt react with each other to produce lithium silicate.

  The operating conditions of the compounding process are different for each device, but it is preferable that the compounding process is performed until the pulverization and compounding sufficiently proceeds. However, if the output is increased too much or too much time is required for the composite, Si and C react to produce SiC that is inactive with respect to the Li insertion reaction. For this reason, it is necessary to determine an appropriate condition for the processing so that the pulverization / combination sufficiently proceeds and the generation of SiC does not occur.

In addition, since lithium silicate is preferably formed dispersed in a silicon oxide phase, SiO x and lithium salt are combined in the first composite treatment, and carbon is further added in the second composite treatment. Compounding with raw materials can also be performed.

  As the next step, the particles obtained by the composite treatment are coated with carbon. As a material used for coating, a material that is heated in an inert atmosphere such as pitch, resin, or polymer to become a carbonaceous material can be used. Specifically, those which are often carbonized by firing at about 1200 ° C. such as petroleum pitch, mesophase pitch, furan resin, cellulose, rubbers are preferable. This is because the firing cannot be performed at a temperature higher than 1400 ° C. as will be described later in the section of the firing treatment. In the coating method, the polymerized and solidified composite particles dispersed in a monomer are subjected to carbonization firing. Alternatively, the solid is obtained by dissolving the polymer in a solvent, dispersing the composite particles, and then evaporating the solvent, and subjecting it to carbonization firing. Moreover, carbon coating by CVD can be performed as another method used for carbon coating. This method is a method in which a gaseous carbon source is flowed on a sample heated to 800 to 1000 ° C. using an inert gas as a carrier gas and carbonized on the sample surface. In this case, benzene, toluene, styrene or the like can be used as the carbon source. In addition, since the sample is heated at 800 to 1000 ° C. when carbon coating is performed by CVD, the firing step described below is not necessarily performed.

The carbonization firing is performed in an inert atmosphere such as in Ar. In the carbonization firing, the polymer or pitch is carbonized, and SiOx is separated into two phases of Si and SiO 2 by a disproportionation reaction. When x = 1, the reaction is represented by the following formula (1).

2SiO → Si + SiO 2 (1)
This disproportionation reaction proceeds at a temperature higher than 800 ° C., and is separated into a fine silicon phase and a SiO 2 phase. As the reaction temperature increases, the crystal of the silicon phase increases and the half width of the Si (220) peak decreases. The firing temperature at which a half width in the preferred range is obtained is in the range of 850 ° C to 1600 ° C. Further, Si generated by the disproportionation reaction reacts with carbon at a temperature higher than 1400 ° C. and changes to SiC. Since SiC is completely inactive with respect to insertion of lithium, the capacity of the active material is reduced when SiC is generated. Therefore, the temperature for carbonization firing is preferably 850 ° C. or higher and 1400 ° C. or lower, more preferably 900 ° C. or higher and 1100 ° C. or lower. The firing time is preferably between about 1 hour and 12 hours.

  A negative electrode active material is obtained by the synthesis method as described above. The product after the carbonization firing may be prepared in terms of particle size, specific surface area, etc. using various mills, pulverizers, grinders and the like.

  Examples of the negative electrode conductive agent for improving the current collecting performance and suppressing the contact resistance with the current collector include acetylene black, carbon black, and graphite.

  Examples of the binder for binding the negative electrode active material and the negative electrode conductive agent include polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVdF), fluorine-based rubber, styrene butadiene rubber, and the like.

  The thickness of the negative electrode active material layer is desirably in the range of 1.0 to 150 μm. Therefore, when the negative electrode current collector is supported on both surfaces, the total thickness of the negative electrode active material layer is in the range of 20 to 300 μm. A more preferable range of the thickness of one side is 30 to 100 μm. Within this range, the large current discharge characteristics and cycle life are greatly improved.

  Regarding the mixing ratio of the negative electrode active material, the negative electrode conductive agent, and the binder, the negative electrode active material is 70% by weight to 96% by weight, the negative electrode conductive agent is 2% by weight to 28% by weight, and the binder is 2% by weight. It is preferable to be in the range of 28 wt% or less. When the amount of the negative electrode conductive agent is less than 2% by weight, the current collecting performance of the negative electrode layer is deteriorated, and the large current characteristics of the nonaqueous electrolyte secondary battery are deteriorated. On the other hand, when the amount of the binder is less than 2% by weight, the binding property between the negative electrode layer and the negative electrode current collector is lowered, and the cycle characteristics are lowered. On the other hand, from the viewpoint of increasing the capacity, the negative electrode conductive agent and the binder are each preferably 28% by weight or less.

  The negative electrode current collector is preferably copper, nickel, or stainless steel that is electrochemically stable at the Li insertion / release potential of the negative electrode active material. The thickness of the negative electrode current collector is desirably 5 to 20 μm. This is because within this range, the electrode strength and weight reduction can be balanced.

  The negative electrode is prepared by, for example, applying a slurry prepared by suspending a negative electrode active material, a negative electrode conductive agent, and a binder in a commonly used solvent to a negative electrode current collector, drying the negative electrode layer, and then forming a negative electrode layer. It is produced by applying. In addition, the negative electrode active material, the negative electrode conductive agent, and the binder may be formed in a pellet shape and used as the negative electrode layer.

2) Non-aqueous electrolyte Examples of the non-aqueous electrolyte include a liquid non-aqueous electrolyte prepared by dissolving an electrolyte in an organic solvent, a gel non-aqueous electrolyte obtained by combining a liquid electrolyte and a polymer material, and the like.

  The liquid non-aqueous electrolyte is prepared by dissolving the electrolyte in an organic solvent at a concentration of 0.5 mol / l or more and 2.5 mol / l or less.

Examples of the electrolyte include lithium perchlorate (LiClO 4 ), lithium hexafluorophosphate (LiPF 6 ), lithium tetrafluoroborate (LiBF 4 ), lithium hexafluoroarsenide (LiAsF 6 ), and trifluorometa. Examples thereof include lithium salts such as lithium sulfonate (LiCF 3 SO 3 ) and bistrifluoromethylsulfonylimitolithium [LiN (CF 3 SO 2 ) 2 ], or a mixture thereof. It is preferable that it is difficult to oxidize even at a high potential, and LiPF 6 is most preferable.

  Examples of the organic solvent include cyclic carbonates such as propylene carbonate (PC), ethylene carbonate (EC), and vinylene carbonate, and chain carbonates such as diethyl carbonate (DEC), dimethyl carbonate (DMC), and methyl ethyl carbonate (MEC). And cyclic ethers such as tetrahydrofuran (THF), 2-methyltetrahydrofuran (2MeTHF), dioxolane (DOX), chain ethers such as dimethoxyethane (DME) and dietoethane (DEE), γ-butyrolactone (GBL), acetonitrile ( AN), sulfolane (SL) and the like alone or in combination.

  Examples of the polymer material include polyvinylidene fluoride (PVdF), polyacrylonitrile (PAN), polyethylene oxide (PEO), and the like.

  As the nonaqueous electrolyte, a room temperature molten salt (ionic melt) containing lithium ions, a polymer solid electrolyte, an inorganic solid electrolyte, or the like may be used.

  The room temperature molten salt (ionic melt) refers to a compound that can exist as a liquid at room temperature (15 ° C. to 25 ° C.) among organic salts composed of a combination of an organic cation and an anion. Examples of the room temperature molten salt include a room temperature molten salt that exists alone as a liquid, a room temperature molten salt that becomes a liquid when mixed with an electrolyte, and a room temperature molten salt that becomes a liquid when dissolved in an organic solvent. In general, the melting point of a room temperature molten salt used for a nonaqueous electrolyte battery is 25 ° C. or less. The organic cation generally has a quaternary ammonium skeleton.

  The polymer solid electrolyte is prepared by dissolving an electrolyte in a polymer material and solidifying it.

  The inorganic solid electrolyte is a solid material having lithium ion conductivity.

3) Positive Electrode The positive electrode includes a positive electrode current collector and a positive electrode active material-containing layer that is supported on one or both surfaces of the positive electrode current collector and includes a positive electrode active material, a positive electrode conductive agent, and a binder.

  Examples of the positive electrode active material include oxides, sulfides, and polymers.

For example, as the oxide, manganese dioxide (MnO 2 ) occluded Li, iron oxide, copper oxide, nickel oxide, and lithium manganese composite oxide (for example, Li x Mn 2 O 4 or Li x MnO 2 ), lithium Nickel composite oxide (for example, Li x NiO 2 ), lithium cobalt composite oxide (Li x CoO 2 ), lithium nickel cobalt composite oxide (for example, LiNi 1-y Co y O 2 ), lithium manganese cobalt composite oxide (for example, LiMn y Co 1-y O 2 ), spinel-type lithium manganese nickel composite oxide (Li x Mn 2-y Ni y O 4 ), lithium phosphorus oxide having an olivine structure (Li x FePO 4 , Li x Fe 1- y Mn y PO 4, Li x CoPO 4 , etc.), iron sulfate (Fe 2 (SO 4) 3), vanadium oxide (e.g. V 2 O 5), and lithium-nickel-cobalt-manganese composite oxide and the like.

  For example, examples of the polymer include conductive polymer materials such as polyaniline and polypyrrole, and disulfide polymer materials. In addition, sulfur (S), carbon fluoride, etc. can be used.

As positive electrode active materials that can obtain a high positive electrode voltage, lithium manganese composite oxide (Li x Mn 2 O 4 ), lithium nickel composite oxide (Li x NiO 2 ), lithium cobalt composite oxide (Li x CoO 2 ), Lithium nickel cobalt composite oxide (Li x Ni 1-y Co y O 2 ), spinel type lithium manganese nickel composite oxide (Li x Mn 2-y Ni y O 4 ), lithium manganese cobalt composite oxide (Li x Mn y Co 1-y O 2 ), lithium iron phosphate (Li x FePO 4 ), lithium nickel cobalt manganese composite oxide, and the like. X and y are preferably in the range of 0 to 1.

  In particular, it is preferable to include a lithium nickel composite oxide. This is because the initial efficiency of the lithium nickel composite oxide is close to the initial efficiency of the negative electrode active material.

Among them, when using a non-aqueous electrolyte containing a room temperature molten salt, it is possible to use lithium iron phosphate, Li x VPO 4 F, lithium manganese composite oxide, lithium nickel composite oxide, lithium nickel cobalt composite oxide, It is preferable from the viewpoint of cycle life. This is because the reactivity between the positive electrode active material and the room temperature molten salt is reduced.

  Examples of the positive electrode active material for the primary battery include manganese dioxide, iron oxide, copper oxide, iron sulfide, and carbon fluoride.

  The primary particle diameter of the positive electrode active material is preferably 100 nm or more and 1 μm or less. It is easy to handle in industrial production as it is 100 nm or more. When the thickness is 1 μm or less, diffusion of lithium ions in the solid can proceed smoothly.

The specific surface area of the positive electrode active material is preferably 0.1 m 2 / g or more and 10 m 2 / g or less. When it is 0.1 m 2 / g or more, sufficient lithium ion storage / release sites can be secured. When it is 10 m 2 / g or less, it is easy to handle in industrial production, and good charge / discharge cycle performance can be secured.

  Examples of the positive electrode conductive agent for improving the current collecting performance and suppressing the contact resistance with the current collector include carbonaceous materials such as acetylene black, carbon black, and graphite.

  Examples of the binder for binding the positive electrode active material and the positive electrode conductive agent include polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVdF), and fluorine-based rubber.

  The thickness of one surface of the positive electrode active material layer is preferably in the range of 1.0 μm to 150 μm from the viewpoint of maintaining the large current discharge characteristics and cycle life of the battery. Accordingly, when the positive electrode current collector is supported on both surfaces, the total thickness of the positive electrode active material layer is desirably in the range of 20 μm to 300 μm. A more preferable range on one side is 30 μm to 120 μm. Within this range, large current discharge characteristics and cycle life are improved.

  Regarding the compounding ratio of the positive electrode active material, the positive electrode conductive agent, and the binder, the positive electrode active material is 80% by weight to 95% by weight, the positive electrode conductive agent is 3% by weight to 18% by weight, and the binder is 2% by weight. It is preferable to be in the range of 17% by weight or less. With respect to the positive electrode conductive agent, the effect described above can be exhibited by being 3% by weight or more, and by being 18% by weight or less, decomposition of the nonaqueous electrolyte on the surface of the positive electrode conductive agent under high temperature storage can be achieved. Can be reduced. When the amount of the binder is 2% by weight or more, sufficient electrode strength can be obtained, and when the amount is 17% by weight or less, the blending amount of the electrode insulator can be reduced and the internal resistance can be reduced.

  For the positive electrode, for example, a positive electrode active material, a positive electrode conductive agent, and a binder are suspended in a suitable solvent, and this suspended slurry is applied to a positive electrode current collector and dried to produce a positive electrode active material-containing layer. Then, it is manufactured by applying a press. In addition, the positive electrode active material, the positive electrode conductive agent, and the binder may be formed in a pellet shape and used as the positive electrode active material-containing layer.

  The positive electrode current collector is preferably an aluminum foil or an aluminum alloy foil.

  The thickness of the aluminum foil and the aluminum alloy foil is 5 μm or more and 20 μm or less, more preferably 15 μm or less. The purity of the aluminum foil is preferably 99% or more. As the aluminum alloy, an alloy containing elements such as magnesium, zinc and silicon is preferable. On the other hand, the content of transition metals such as iron, copper, nickel and chromium is preferably 1% or less.

4) Separator Examples of the separator include a porous film containing polyethylene, polypropylene, cellulose, or polyvinylidene fluoride (PVdF), and a synthetic resin nonwoven fabric. Among these, a porous film made of polyethylene or polypropylene is preferable from the viewpoint of improving safety because it can be melted at a constant temperature to interrupt the current.

5) Exterior member Examples of the exterior member include a laminate film having a thickness of 0.2 mm or less and a metal container having a thickness of 0.5 mm or less. The wall thickness of the metal container is more preferably 0.2 mm or less.

  Examples of the shape include a flat type, a square type, a cylindrical type, a coin type, a button type, a sheet type, and a laminated type. Of course, in addition to a small battery mounted on a portable electronic device or the like, a large battery mounted on a two-wheel to four-wheel automobile or the like may be used.

  The laminate film is a multilayer film composed of a metal layer and a resin layer covering the metal layer. In order to reduce the weight, the metal layer is preferably an aluminum foil or an aluminum alloy foil. The resin layer is for reinforcing the metal layer, and a polymer such as polypropylene (PP), polyethylene (PE), nylon, polyethylene terephthalate (PET), or the like can be used. The laminate film is formed by sealing by heat sealing.

  Examples of the metal container include aluminum or an aluminum alloy. As the aluminum alloy, an alloy containing elements such as magnesium, zinc and silicon is preferable. On the other hand, the content of transition metals such as iron, copper, nickel and chromium is preferably 1% or less. Thereby, it becomes possible to dramatically improve long-term reliability and heat dissipation in a high temperature environment.

6) Negative electrode terminal The negative electrode terminal can be formed from a material that is electrochemically stable at the Li storage / release potential of the negative electrode active material described above and that has conductivity. Specific examples include copper, nickel, and stainless steel. In order to reduce the contact resistance, the same material as the negative electrode current collector is preferable.

7) Positive electrode terminal The positive electrode terminal can be formed from a material having electrical stability and electrical conductivity in a range where the potential with respect to the lithium ion metal is 3 V or more and 5 V or less. Specific examples include aluminum alloys and aluminum containing elements such as Mg, Ti, Zn, Mn, Fe, Cu, and Si. In order to reduce the contact resistance, the same material as the positive electrode current collector is preferable.

  The nonaqueous electrolyte battery according to the first embodiment is not limited to the configuration shown in FIGS. 1 and 2 described above, and can be configured, for example, as shown in FIGS. FIG. 3 is a partially cutaway perspective view schematically showing another flat type nonaqueous electrolyte secondary battery according to the first embodiment, and FIG. 4 is an enlarged cross-sectional view of a portion B in FIG.

  As shown in FIG. 3, a laminated electrode group 9 is housed in an exterior member 8 made of a laminate film. As shown in FIG. 4, the stacked electrode group 9 has a structure in which the positive electrodes 3 and the negative electrodes 4 are alternately stacked with separators 5 interposed therebetween. There are a plurality of positive electrodes 3, each of which includes a positive electrode current collector 3 a and a positive electrode active material-containing layer 3 b supported on both surfaces of the positive electrode current collector 3 a. There are a plurality of negative electrodes 4, each including a negative electrode current collector 4a and a negative electrode active material-containing layer 4b supported on both surfaces of the negative electrode current collector 4a. One side of the negative electrode current collector 4 a of each negative electrode 4 protrudes from the positive electrode 3. The negative electrode current collector 4 a protruding from the positive electrode 3 is electrically connected to the strip-shaped negative electrode terminal 2. The tip of the strip-like negative electrode terminal 2 is drawn out from the exterior member 8 to the outside. Although not shown here, the positive electrode current collector 3 a of the positive electrode 3 protrudes from the negative electrode 4 on the side opposite to the protruding side of the negative electrode current collector 4 a. The positive electrode current collector 3 a protruding from the negative electrode 4 is electrically connected to the belt-like positive electrode terminal 1. The front end of the belt-like positive electrode terminal 1 is located on the opposite side to the negative electrode terminal 2 and is drawn out from the side of the exterior member 8.

(Second embodiment)
The battery pack according to the second embodiment has a plurality of single batteries according to the first embodiment. Each battery unit is electrically arranged in series or in parallel to form an assembled battery.

  The flat battery shown in FIG. 1 or FIG. 3 can be used for a single battery.

  The battery unit 21 in the battery pack of FIG. 5 is composed of a flat type non-aqueous electrolyte battery shown in FIG. The plurality of battery units 21 are stacked in the thickness direction with the direction in which the positive electrode terminal 1 and the negative electrode terminal 2 protrude are aligned. As shown in FIG. 6, the battery units 21 are connected in series to form an assembled battery 22. As shown in FIG. 5, the assembled battery 22 is integrated by an adhesive tape 23.

  A printed wiring board 24 is disposed on the side surface from which the positive electrode terminal 1 and the negative electrode terminal 2 protrude. As shown in FIG. 6, a thermistor 25, a protection circuit 26, and a terminal 27 for energizing external devices are mounted on the printed wiring board 24.

  As shown in FIGS. 5 and 6, the positive electrode side wiring 28 of the assembled battery 22 is electrically connected to the positive electrode side connector 29 of the protection circuit 26 of the printed wiring board 24. The negative electrode side wiring 30 of the assembled battery 22 is electrically connected to the negative electrode side connector 31 of the protection circuit 26 of the printed wiring board 24.

  The thermistor 25 is for detecting the temperature of the battery unit 21, and the detection signal is transmitted to the protection circuit 26. The protection circuit 26 can cut off the plus side wiring 31a and the minus side wiring 31b between the protection circuit and a terminal for energization to an external device under a predetermined condition. The predetermined condition is, for example, when the detected temperature of the thermistor becomes equal to or higher than a predetermined temperature, or when overcharge, overdischarge, overcurrent, etc. of the battery unit 21 is detected. This detection method is performed for each individual battery unit 21 or the entire battery unit 21. When detecting each battery unit 21, the battery voltage may be detected, or the positive electrode potential or the negative electrode potential may be detected. In the latter case, a lithium electrode used as a reference electrode is inserted into each battery unit 21. In the case of FIG. 6, wiring 32 for voltage detection is connected to each battery unit 21, and a detection signal is transmitted to the protection circuit 26 through these wirings 32.

  In the case of the second embodiment, since the control of the positive or negative electrode potential by detecting the battery voltage is excellent, this is particularly suitable when the protection circuit detects only the battery voltage.

  In the assembled battery 22, a protective sheet 33 made of rubber or resin is disposed on three side surfaces other than the side surface from which the positive electrode terminal 1 and the negative electrode terminal 2 protrude. Between the side surface from which the positive electrode terminal 1 and the negative electrode terminal 2 protrude and the printed wiring board 24, a block-shaped protection block 34 made of rubber or resin is disposed.

  The assembled battery 22 is stored in a storage container 35 together with the protective sheets 33, the protective blocks 34, and the printed wiring board 24. That is, the protective sheet 33 is disposed on each of the inner side surface in the long side direction and the inner side surface in the short side direction of the storage container 35, and the printed wiring board 24 is disposed on the inner side surface on the opposite side in the short side direction. The assembled battery 22 is located in a space surrounded by the protective sheet 33 and the printed wiring board 24. A lid 36 is attached to the upper surface of the storage container 35.

  In addition, instead of the adhesive tape 23, a heat shrink tape may be used for fixing the assembled battery 22. In this case, protective sheets are arranged on both side surfaces of the assembled battery, the heat shrinkable tube is circulated, and then the heat shrinkable tube is thermally contracted to bind the assembled battery.

  5 and 6 are connected in series, but may be connected in parallel to increase the battery capacity. Of course, the assembled battery packs can be connected in series and in parallel.

  Moreover, the aspect of a battery pack is changed suitably by a use.

  As a use of the battery pack according to the second embodiment, one in which a large current characteristic is desired is preferable. Specific examples include a power source for a digital camera, a vehicle for a two- to four-wheel hybrid electric vehicle, a two- to four-wheel electric vehicle, an assist bicycle, and the like. In particular, the vehicle-mounted one is suitable.

  Examples will be described below, but the present invention is not limited to the examples described below unless the gist of the present invention is exceeded.

Example 1
Using a planetary ball mill (model number P-5, manufactured by FRITSCH), synthesis was performed using the following raw material composition, ball mill operating conditions, and firing conditions.

  In the ball mill, a stainless steel container having a volume of 250 ml and a ball of 10 mmφ were used. As raw materials, 10 g of SiO powder having an average particle diameter of 45 μm and 0.01 g of lithium chloride were mixed at a frequency of 150 rpm and a treatment time of 3 h. Furthermore, 10 g of graphite powder having an average particle diameter of 6 μm was added as a carbon material, and the resultant was treated at 120 rpm for 18 hours.

  The mixture obtained by the ball mill treatment was combined with hard carbon by the following method. 3 g of the composite particles were added to a mixed liquid of 5.0 g of furfuryl alcohol, 10 g of ethanol and 0.125 g of water and kneaded. Further, 0.2 g of dilute hydrochloric acid serving as a polymerization catalyst for furfuryl alcohol was added and allowed to stand at room temperature to obtain composite particles.

  The obtained carbon composite was calcined at 1000 ° C. for 3 hours in Ar gas, cooled to room temperature, pulverized and passed through a 30 μm-diameter sieve, and a negative electrode active comprising composite particles having a lithium silicate phase of 0.05 wt%. Obtained material.

(Example 2)
The silicon monoxide-carbon composite particles composited in the same manner as in Example 1 except that the amount of raw material lithium chloride was 0.2 g were fired under the same conditions as in Example 1 to obtain a negative electrode active material. .

(Example 3)
Silicon monoxide-carbon composite particles composited in the same manner as in Example 1 except that the amount of raw material lithium chloride was 0.6 g were fired under the same conditions as in Example 1 to obtain a negative electrode active material. .

Example 4
The silicon monoxide-carbon composite particles composited in the same manner as in Example 1 except that the amount of the raw material lithium chloride was 1.35 g were fired under the same conditions as in Example 1 to obtain a negative electrode active material. .

(Comparative Example 1)
The silicon monoxide-carbon composite particles composited by the same method as in Example 1 without adding lithium salt were fired under the same conditions as in Example 1 to obtain an active material.

(Comparative Example 2)
To the composite particles obtained in Comparative Example 1, 1.5 g of Li 2 SiO 3 powder was added and compounded using a planetary ball mill at a frequency of 100 rpm and a treatment time of 2 h to obtain a negative electrode active material having a lithium silicate phase on the surface. .

(Comparative Example 3)
As raw materials, 3.2 g of Si powder having an average particle diameter of 5 μm, 6.8 g of silica powder (SiO 2 ), and 0.60 g of lithium chloride (LiCl) were mixed at a frequency of 150 rpm and a treatment time of 3 h. Furthermore, 10 g of graphite powder having an average particle diameter of 6 μm was added as a carbon material, and the resultant was treated at 120 rpm for 18 hours. Further, furfuryl alcohol was added and baked under the same conditions as in Example 1 to obtain a negative electrode active material in which Si, SiO 2 and lithium silicate phases were simply dispersed in the C matrix.

  The active material obtained in Example 1 was subjected to charge / discharge test and X-ray diffraction measurement to evaluate charge / discharge characteristics and physical properties.

(Charge / discharge test)
The obtained sample was kneaded using N-methylpyrrolidone as a dispersion medium with 30 wt% graphite having an average diameter of 6 μm and 12 wt% polyvinylidene fluoride, rolled onto a 12 μm thick copper foil, and then heated at 100 ° C. It was vacuum-dried for 12 hours to obtain a test electrode. A battery in which the counter electrode and the reference electrode were metallic Li and the electrolyte was an EC / DEC (volume ratio 1: 2) solution of 1M LiPF 6 was produced in an argon atmosphere.

The charging / discharging test was performed by charging at a current density of 1 mA / cm 2 up to a potential difference of 0.01 V between the reference electrode and the test electrode, and further performing a constant voltage charging at 0.01 V for 8 hours, and discharging at 1 mA / cm 2 . The current density was up to 1.5V.

  In the charge / discharge test, the charge capacity and the discharge capacity were the amounts of electricity that flowed from the start to the end of charging or discharging. The initial charge / discharge efficiency was determined as a percentage of the discharge capacity at the first cycle to the charge capacity at the first cycle.

Next, similarly, charging is performed at a current density of 1 mA / cm 2 until the potential difference between the reference electrode and the test electrode is 0.01 V, and further, constant voltage charging is performed at 0.01 V for 8 hours, and discharging is performed at a current density of 10 mA / cm 2. It went to 1.5V. Large current characteristics were evaluated by comparing the ratio of capacity at 10 mA / cm 2 to capacity at a current density of 1 mA / cm 2 during discharge.

In addition, the 100th cycle of the first cycle is performed by performing 100 cycles of charging at a current density of 1 mA / cm 2 to a potential difference of 0.01 V between the reference electrode and the test electrode and discharging to 1.5 V at a current density of 1 mA / cm 2. The discharge capacity retention rate was measured.

(X-ray diffraction measurement)
Powder X-ray diffraction measurement was performed on the obtained powder sample, and the half width of the peak of the Si (220) plane was measured. The measurement was performed under the following conditions using an X-ray diffractometer (model M18XHF22) manufactured by Mac Science Co., Ltd.

Counter cathode: Cu
Tube voltage: 50 kv
Tube current: 300mA
Scanning speed: 1 ° (2θ) / min
Time constant: 1 sec
Receiving slit: 0.15mm
Divergent slit: 0.5 °
Scattering slit: 0.5 °
From the diffraction pattern, the half-value width (° (2θ)) of the peak of the Si plane index (220) appearing at d = 1.92 ° (2θ = 47.2 °) was measured. In addition, when the peak of Si (220) overlapped with the peaks of other substances contained in the active material, the peak was isolated and the half width was measured.

Table 1 shows the content of the lithium silicate phase and the evaluation results for each example and comparative example.

  Comparing Examples 1 to 4 and Comparative Examples 1 to 3, it can be seen that Examples 1 to 4 are more excellent in initial charge / discharge capacity efficiency. Therefore, it can be seen that the initial charge / discharge efficiency can be improved by dispersing the lithium silicate phase in the composite particles.

  Comparing Examples 2 to 3 and Examples 1 and 4, it can be seen that Examples 2 to 3 are more excellent in large current characteristics. Therefore, it can be seen that the content of the lithium silicate phase is preferably 0.9 (wt%) or more and 2.8 (wt%) or less.

<Identification of lithium silicate phase>
The active material of the sintered Example 1 and Comparative Example 2 and 3, using the XRD (Mac Science Corp. Part No. M18XHF 22 -SRA), was determined X-ray diffraction pattern using Cu-K [alpha line. An X-ray diffraction pattern is shown in FIG.

  In the X-ray diffraction pattern of the sample of Comparative Example 1, no lithium silicate peak was observed, but in the samples of Examples 2 and 3, a diffraction peak was observed at 2θ = 22 °. This peak is identified in the (-110) diffraction line of Li4SiO4. Therefore, it can be seen that the composite particles of Examples 2 and 3 mainly contain Li4SiO4 as the lithium silicate.

  Regarding the active material of Comparative Example 1, the electrode was taken out at the stage where the electrode was produced by the method described above, the stage where the initial charge was performed, and the stage where the initial charge and initial discharge were performed. Similarly, X-ray diffraction patterns were obtained for these electrodes. The electrode was covered with a polyethylene film to prevent contact with the atmosphere. The lower part of FIG. 9 shows the X-ray diffraction pattern of the electrode at the stage of preparation. The electrode X-ray diffraction pattern at the time of initial charge is shown in the middle part of FIG. The upper part of FIG. 9 shows an electrode X-ray diffraction pattern at the time of initial discharge.

  A diffraction peak was observed at 2θ = 19 ° on the electrode after the initial charge and after the initial discharge. This peak is identified in the (020) diffraction line of Li2SiO2. Therefore, it can be seen that the composite particles of Comparative Example 1 mainly generate Li2SiO3 when charged with lithium.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to these, In the category of the summary of the invention as described in a claim, it can change variously. In addition, the present invention can be variously modified without departing from the scope of the invention in the implementation stage. Furthermore, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment.

The cross-sectional schematic diagram of the flat type nonaqueous electrolyte secondary battery concerning 1st embodiment. The partial cross section schematic diagram showing in detail the part enclosed by the circle | round | yen shown by A of FIG. The partial notch perspective view which showed typically another flat type nonaqueous electrolyte secondary battery concerning 1st embodiment. The expanded sectional view of the B section of FIG. The disassembled perspective view of the battery pack which concerns on 2nd embodiment. The block diagram which shows the electric circuit of the battery pack of FIG. The cross-sectional schematic diagram of the negative electrode active material concerning 1st embodiment. The X-ray-diffraction pattern of the composite particle which concerns on the comparative example 1, Example 2, and Example 3. FIG. The X-ray-diffraction pattern of the negative electrode active material content layer which concerns on the time of discharge of the comparative example 1, the time of charge, and use.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Positive electrode terminal, 2 ... Negative electrode terminal, 3 ... Positive electrode, 3a ... Positive electrode collector, 3b ... Positive electrode active material content layer, 4 ... Negative electrode, 4a ... Negative electrode current collector, 4b ... Negative electrode active material content layer, 5 ... Separator, 6 ... wound electrode group, 7, 8 ... exterior member, 9 ... laminated electrode group, 21 ... single battery, 22 ... assembled battery, 23 ... adhesive tape, 24 ... printed wiring board, 28 ... positive electrode side wiring, 29 ... positive electrode side connector, 30 ... negative electrode side wiring, 31 ... negative electrode side connector, 33 ... protective block, 35 ... storage container, 36 ... lid.

Claims (3)

  1. An exterior member;
    A positive electrode housed in the exterior member;
    The carbonaceous material housed in the exterior member, silicon oxide dispersed in the carbonaceous material, silicon dispersed in the silicon oxide, and Li4SiO4 contained in the silicon oxide as a main component A negative electrode comprising composite particles having a lithium silicate phase,
    A non-aqueous electrolyte filled in the exterior member;
    A non-aqueous electrolyte battery comprising:
  2.   The non-aqueous electrolyte battery according to claim 1, wherein the lithium silicate phase has a content of 0.05 wt% or more and 6 wt% or less with respect to the composite particles.
  3. Carbonaceous materials,
    Silicon oxide dispersed in the carbonaceous material;
    Silicon dispersed in the silicon oxide;
    A negative electrode active material comprising a lithium silicate phase contained in the silicon oxide.

JP2005243361A 2005-08-24 2005-08-24 Nonaqueous electrolyte battery and negative electrode active material Active JP4533822B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005243361A JP4533822B2 (en) 2005-08-24 2005-08-24 Nonaqueous electrolyte battery and negative electrode active material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005243361A JP4533822B2 (en) 2005-08-24 2005-08-24 Nonaqueous electrolyte battery and negative electrode active material

Publications (2)

Publication Number Publication Date
JP2007059213A true JP2007059213A (en) 2007-03-08
JP4533822B2 JP4533822B2 (en) 2010-09-01

Family

ID=37922515

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005243361A Active JP4533822B2 (en) 2005-08-24 2005-08-24 Nonaqueous electrolyte battery and negative electrode active material

Country Status (1)

Country Link
JP (1) JP4533822B2 (en)

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010015986A (en) * 2008-06-30 2010-01-21 Samsung Sdi Co Ltd Secondary battery
JP2010170943A (en) * 2009-01-26 2010-08-05 Asahi Glass Co Ltd Negative electrode material for secondary battery, and its manufacturing method
WO2010058990A3 (en) * 2008-11-20 2010-08-12 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
JP2011051844A (en) * 2009-09-02 2011-03-17 Osaka Titanium Technologies Co Ltd METHOD FOR PRODUCING SiOx
JP2011113862A (en) * 2009-11-27 2011-06-09 Hitachi Maxell Ltd Nonaqueous secondary battery and method of manufacturing the same
KR101042009B1 (en) * 2008-09-30 2011-06-16 한국전기연구원 Manufacturing Method of Negative Active Material, Negative Active Material thereof And Lithium Secondary Battery Comprising The Same
WO2011077654A1 (en) * 2009-12-21 2011-06-30 株式会社豊田自動織機 Negative electrode active substance for nonaqueous secondary cell and method for producing the same
KR101102651B1 (en) * 2007-11-19 2012-01-04 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
JP2012069518A (en) * 2010-08-24 2012-04-05 Sekisui Chem Co Ltd Carbon particle for electrode, negative electrode material for lithium ion secondary battery and method for producing carbon particle for electrode
KR101194911B1 (en) 2011-11-15 2012-10-25 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
WO2012176039A1 (en) * 2011-06-24 2012-12-27 Toyota Jidosha Kabushiki Kaisha Negative-electrode active material, and method for production of negative-electrode active material
WO2013129850A1 (en) * 2012-02-28 2013-09-06 주식회사 엘지화학 Electrode active material for lithium secondary battery and method for manufacturing same
WO2014049992A1 (en) * 2012-09-27 2014-04-03 三洋電機株式会社 Negative electrode active material for non-aqueous electrolyte rechargeable battery, and non-aqueous electrolyte rechargeable battery using negative electrode active material
US8715855B2 (en) 2007-09-06 2014-05-06 Canon Kabushiki Kaisha Method of producing lithium ion-storing/releasing material, lithium ion-storing/releasing material, and electrode structure and energy storage device using the material
JP2014199753A (en) * 2013-03-29 2014-10-23 日本電気株式会社 Secondary battery and negative electrode active material
WO2015025443A1 (en) * 2013-08-21 2015-02-26 信越化学工業株式会社 Negative-electrode active substance, negative electrode active substance material, negative electrode, lithium ion secondary battery, negative electrode active substance manufacturing method, and lithium ion secondary battery manufacturing method
JP2015111547A (en) * 2013-10-29 2015-06-18 信越化学工業株式会社 Negative electrode active material, production method for negative electrode active material, and lithium ion secondary battery
WO2015107581A1 (en) * 2014-01-16 2015-07-23 信越化学工業株式会社 Negative electrode material for nonaqueous electrolyte secondary batteries and method for producing negative electrode active material particles
WO2015118593A1 (en) * 2014-02-07 2015-08-13 信越化学工業株式会社 Negative electrode for non-aqueous electrolyte secondary batteries, and non-aqueous electrolyte secondary battery
WO2015136922A1 (en) * 2014-03-14 2015-09-17 三洋電機株式会社 Non-aqueous electrolyte secondary cell
WO2015145521A1 (en) * 2014-03-24 2015-10-01 株式会社 東芝 Negative electrode active material for non-aqueous electrolyte cell, negative electrode for non-aqueous electrolyte secondary cell, non-aqueous electrolyte secondary cell, and cell pack
JP2015198038A (en) * 2014-04-02 2015-11-09 信越化学工業株式会社 Negative electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery
WO2015177665A1 (en) * 2014-05-23 2015-11-26 Semiconductor Energy Laboratory Co., Ltd. Negative electrode active material and power storage device
WO2016009590A1 (en) * 2014-07-15 2016-01-21 信越化学工業株式会社 Negative electrode material for nonaqueous electrolyte secondary battery and method for producing negative electrode active material particle
CN105449201A (en) * 2015-01-28 2016-03-30 万向A一二三系统有限公司 Preparation method of power-type high-tap density lithium iron phosphate composite material
CN105453310A (en) * 2013-08-14 2016-03-30 东曹株式会社 Composite active material for lithium secondary batteries and method for producing same
KR101610995B1 (en) 2012-11-30 2016-04-08 주식회사 엘지화학 Silicon based composite and manufacturing method thereof
JP2016062860A (en) * 2014-09-22 2016-04-25 株式会社東芝 Electrode active material for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery including the same
JP2016062829A (en) * 2014-09-19 2016-04-25 株式会社東芝 Negative electrode material for nonaqueous electrolyte secondary battery, negative electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, and battery pack
WO2016121320A1 (en) * 2015-01-28 2016-08-04 三洋電機株式会社 Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
WO2016121321A1 (en) * 2015-01-28 2016-08-04 三洋電機株式会社 Negative electrode active material for non-aqueous electrolyte secondary batteries, and non-aqueous electrolyte secondary battery
CN105895892A (en) * 2015-02-16 2016-08-24 信越化学工业株式会社 Negative electrode active material for non-aqueous electrolyte secondary battery containing the same, non-aqueous electrolyte secondary battery, and method of producing said electrode material
JP2016207446A (en) * 2015-04-22 2016-12-08 信越化学工業株式会社 Negative electrode active material for nonaqueous electrolyte secondary battery, method of manufacturing the same, nonaqueous electrolyte secondary battery using the same, and method of manufacturing negative electrode material for nonaqueous electrolyte secondary battery
WO2016204366A1 (en) * 2015-06-15 2016-12-22 대주전자재료 주식회사 Anode material for non-aqueous electrolyte secondary battery, preparation method therefor, and non-aqueous electrolyte secondary battery including same
WO2017141661A1 (en) * 2016-02-15 2017-08-24 信越化学工業株式会社 Anode active material, mixed anode active material ingredient, anode for nonaqueous electrolytic secondary battery, lithium ion secondary battery, and method for manufacturing anode active material
KR101777917B1 (en) 2014-08-26 2017-09-12 주식회사 엘지화학 Surface coated cathode active material, preparation method thereof and lithium secondary battery comprising the same
EP3104440A4 (en) * 2014-02-07 2017-09-27 Shin-Etsu Chemical Co., Ltd. Negative electrode active material for negative electrode material of non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
KR101902071B1 (en) * 2015-10-26 2018-11-02 주식회사 엘지화학 Negative electrode active particle and method for manufacturing the same
US10177403B2 (en) 2015-02-23 2019-01-08 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
US10205165B2 (en) * 2013-03-29 2019-02-12 Sanyo Electric Co., Ltd. Negative electrode active material for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery
US10312507B2 (en) 2015-01-28 2019-06-04 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
WO2019142744A1 (en) * 2018-01-19 2019-07-25 三洋電機株式会社 Non-aqueous electrolyte secondary battery
US10516153B2 (en) 2015-01-28 2019-12-24 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
US10516158B2 (en) 2015-01-28 2019-12-24 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107408725A (en) * 2015-02-27 2017-11-28 三洋电机株式会社 Rechargeable nonaqueous electrolytic battery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11312518A (en) * 1998-04-28 1999-11-09 Sanyo Electric Co Ltd Negative electrode for lithium secondary battery and lithium secondary battery using the same
JP2003160328A (en) * 2001-09-05 2003-06-03 Shin Etsu Chem Co Ltd Lithium-containing silicon oxide powder and method for production thereof
JP2004119176A (en) * 2002-09-26 2004-04-15 Toshiba Corp Negative electrode active material for nonaqueous electrolyte rechargeable battery, and nonaqueous electrolyte rechargeable battery
JP2005011801A (en) * 2003-05-22 2005-01-13 Matsushita Electric Ind Co Ltd Lithium ion secondary battery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11312518A (en) * 1998-04-28 1999-11-09 Sanyo Electric Co Ltd Negative electrode for lithium secondary battery and lithium secondary battery using the same
JP2003160328A (en) * 2001-09-05 2003-06-03 Shin Etsu Chem Co Ltd Lithium-containing silicon oxide powder and method for production thereof
JP2004119176A (en) * 2002-09-26 2004-04-15 Toshiba Corp Negative electrode active material for nonaqueous electrolyte rechargeable battery, and nonaqueous electrolyte rechargeable battery
JP2005011801A (en) * 2003-05-22 2005-01-13 Matsushita Electric Ind Co Ltd Lithium ion secondary battery

Cited By (85)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8715855B2 (en) 2007-09-06 2014-05-06 Canon Kabushiki Kaisha Method of producing lithium ion-storing/releasing material, lithium ion-storing/releasing material, and electrode structure and energy storage device using the material
KR101102651B1 (en) * 2007-11-19 2012-01-04 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
JP2010015986A (en) * 2008-06-30 2010-01-21 Samsung Sdi Co Ltd Secondary battery
US9450240B2 (en) 2008-06-30 2016-09-20 Samsung Sdi Co., Ltd. Secondary battery
KR101042009B1 (en) * 2008-09-30 2011-06-16 한국전기연구원 Manufacturing Method of Negative Active Material, Negative Active Material thereof And Lithium Secondary Battery Comprising The Same
JP2012509564A (en) * 2008-11-20 2012-04-19 エルジー・ケム・リミテッド Secondary battery electrode active material and method for producing the same
US8546019B2 (en) 2008-11-20 2013-10-01 Lg Chem, Ltd. Electrode active material for secondary battery and method for preparing the same
EP2360759A2 (en) * 2008-11-20 2011-08-24 LG Chem, Ltd. Electrode active material for secondary battery and method for preparing the same
CN102292854A (en) * 2008-11-20 2011-12-21 株式会社Lg化学 Electrode active material for a secondary battery and its preparation method
WO2010058990A3 (en) * 2008-11-20 2010-08-12 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
EP2360759A4 (en) * 2008-11-20 2013-03-06 Lg Chemical Ltd Electrode active material for secondary battery and method for preparing the same
JP2010170943A (en) * 2009-01-26 2010-08-05 Asahi Glass Co Ltd Negative electrode material for secondary battery, and its manufacturing method
JP2011051844A (en) * 2009-09-02 2011-03-17 Osaka Titanium Technologies Co Ltd METHOD FOR PRODUCING SiOx
JP2011113862A (en) * 2009-11-27 2011-06-09 Hitachi Maxell Ltd Nonaqueous secondary battery and method of manufacturing the same
US9184439B2 (en) 2009-12-21 2015-11-10 Kabushiki Kaisha Toyota Jidosha Negative-electrode active material for non-aqueous-system secondary battery and production process for the same
WO2011077654A1 (en) * 2009-12-21 2011-06-30 株式会社豊田自動織機 Negative electrode active substance for nonaqueous secondary cell and method for producing the same
JP2012069518A (en) * 2010-08-24 2012-04-05 Sekisui Chem Co Ltd Carbon particle for electrode, negative electrode material for lithium ion secondary battery and method for producing carbon particle for electrode
JP2013008567A (en) * 2011-06-24 2013-01-10 Toyota Motor Corp Negative electrode active material, and method for manufacturing negative electrode active material
KR20140009583A (en) * 2011-06-24 2014-01-22 도요타 지도샤(주) Negative-electrode active material, and method for production of negative-electrode active material
CN103608952A (en) * 2011-06-24 2014-02-26 丰田自动车株式会社 Negative-electrode active material, and method for production of negative-electrode active material
US9136525B2 (en) 2011-06-24 2015-09-15 Toyota Jidosha Kabushiki Kaisha Negative-electrode active material, and method for production of negative-electrode active material
WO2012176039A1 (en) * 2011-06-24 2012-12-27 Toyota Jidosha Kabushiki Kaisha Negative-electrode active material, and method for production of negative-electrode active material
KR101600157B1 (en) 2011-06-24 2016-03-04 도요타 지도샤(주) Negative-electrode active material, and method for production of negative-electrode active material
KR101194911B1 (en) 2011-11-15 2012-10-25 주식회사 엘지화학 Electrode active material for secondary battery and method for preparing the same
JP2015512130A (en) * 2012-02-28 2015-04-23 エルジー・ケム・リミテッド Electrode active material for lithium secondary battery and method for producing the same
EP2806488A4 (en) * 2012-02-28 2015-10-28 Lg Chemical Ltd Electrode active material for lithium secondary battery and method for manufacturing same
WO2013129850A1 (en) * 2012-02-28 2013-09-06 주식회사 엘지화학 Electrode active material for lithium secondary battery and method for manufacturing same
CN104603993B (en) * 2012-09-27 2017-09-01 三洋电机株式会社 Anode for nonaqueous electrolyte secondary battery active material and the rechargeable nonaqueous electrolytic battery using the negative electrode active material
CN104603993A (en) * 2012-09-27 2015-05-06 三洋电机株式会社 Negative electrode active material for non-aqueous electrolyte rechargeable battery, and non-aqueous electrolyte rechargeable battery using negative electrode active material
JPWO2014049992A1 (en) * 2012-09-27 2016-08-22 三洋電機株式会社 Negative electrode active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the negative electrode active material
WO2014049992A1 (en) * 2012-09-27 2014-04-03 三洋電機株式会社 Negative electrode active material for non-aqueous electrolyte rechargeable battery, and non-aqueous electrolyte rechargeable battery using negative electrode active material
KR101610995B1 (en) 2012-11-30 2016-04-08 주식회사 엘지화학 Silicon based composite and manufacturing method thereof
US9627681B2 (en) 2012-11-30 2017-04-18 Lg Chem, Ltd. Silicon-based composite and production method thereof
US10205165B2 (en) * 2013-03-29 2019-02-12 Sanyo Electric Co., Ltd. Negative electrode active material for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery
JP2014199753A (en) * 2013-03-29 2014-10-23 日本電気株式会社 Secondary battery and negative electrode active material
EP3035418A4 (en) * 2013-08-14 2017-01-18 Tosoh Corporation Composite active material for lithium secondary batteries and method for producing same
CN105453310A (en) * 2013-08-14 2016-03-30 东曹株式会社 Composite active material for lithium secondary batteries and method for producing same
US9935309B2 (en) 2013-08-21 2018-04-03 Shin-Etsu Chemical Co., Ltd. Negative electrode active material, raw material for a negative electrode active material, negative electrode, lithium ion secondary battery, method for producing a negative electrode active material, and method for producing a lithium ion secondary battery
WO2015025443A1 (en) * 2013-08-21 2015-02-26 信越化学工業株式会社 Negative-electrode active substance, negative electrode active substance material, negative electrode, lithium ion secondary battery, negative electrode active substance manufacturing method, and lithium ion secondary battery manufacturing method
CN105474438A (en) * 2013-08-21 2016-04-06 信越化学工业株式会社 Negative-electrode active substance, negative electrode active substance material, negative electrode, lithium ion secondary battery, negative electrode active substance manufacturing method, and lithium ion secondary battery manufacturing method
CN105474438B (en) * 2013-08-21 2018-07-31 信越化学工业株式会社 The manufacturing method of negative electrode active material, negative electrode active material material, negative electrode, lithium rechargeable battery, the manufacturing method of negative electrode active material and lithium rechargeable battery
JP2015111547A (en) * 2013-10-29 2015-06-18 信越化学工業株式会社 Negative electrode active material, production method for negative electrode active material, and lithium ion secondary battery
US10283756B2 (en) 2013-10-29 2019-05-07 Shin-Etsu Chemical Co., Ltd. Negative electrode active material, method for producing a negative electrode active material, and lithium ion secondary battery
US9929399B2 (en) 2013-10-29 2018-03-27 Shin-Etsu Chemical Co., Ltd. Negative electrode active material, method for producing a negative electrode active material, and lithium ion secondary battery
US10396351B2 (en) 2014-01-16 2019-08-27 Shin-Etsu Chemical Co., Ltd. Negative electrode material for non-aqueous electrolyte secondary battery and method of producing negative electrode active material particles
WO2015107581A1 (en) * 2014-01-16 2015-07-23 信越化学工業株式会社 Negative electrode material for nonaqueous electrolyte secondary batteries and method for producing negative electrode active material particles
CN105917499B (en) * 2014-01-16 2019-05-07 信越化学工业株式会社 The manufacturing method of negative electrode material for nonaqueous electrode secondary battery and anode active material particles
JP2015156328A (en) * 2014-01-16 2015-08-27 信越化学工業株式会社 Negative electrode material for nonaqueous electrolyte secondary battery and method of producing negative electrode active material particles
CN105917499A (en) * 2014-01-16 2016-08-31 信越化学工业株式会社 Negative electrode material for nonaqueous electrolyte secondary batteries and method for producing negative electrode active material particles
EP3096379A4 (en) * 2014-01-16 2017-07-19 Shin-Etsu Chemical Co., Ltd. Negative electrode material for nonaqueous electrolyte secondary batteries and method for producing negative electrode active material particles
WO2015118593A1 (en) * 2014-02-07 2015-08-13 信越化学工業株式会社 Negative electrode for non-aqueous electrolyte secondary batteries, and non-aqueous electrolyte secondary battery
US10388950B2 (en) 2014-02-07 2019-08-20 Shin-Etsu Chemical Co., Ltd. Negative electrode active material for negative electrode material of non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
EP3104440A4 (en) * 2014-02-07 2017-09-27 Shin-Etsu Chemical Co., Ltd. Negative electrode active material for negative electrode material of non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
JP2015165482A (en) * 2014-02-07 2015-09-17 信越化学工業株式会社 Negative electrode for nonaqueous electrolyte secondary batteries and nonaqueous electrolyte secondary battery
JPWO2015136922A1 (en) * 2014-03-14 2017-04-06 三洋電機株式会社 Nonaqueous electrolyte secondary battery
WO2015136922A1 (en) * 2014-03-14 2015-09-17 三洋電機株式会社 Non-aqueous electrolyte secondary cell
WO2015145521A1 (en) * 2014-03-24 2015-10-01 株式会社 東芝 Negative electrode active material for non-aqueous electrolyte cell, negative electrode for non-aqueous electrolyte secondary cell, non-aqueous electrolyte secondary cell, and cell pack
JPWO2015145521A1 (en) * 2014-03-24 2017-04-13 株式会社東芝 Negative electrode active material for non-aqueous electrolyte battery, negative electrode for non-aqueous electrolyte secondary battery, non-aqueous electrolyte secondary battery, and battery pack
US10511026B2 (en) 2014-03-24 2019-12-17 Kabushiki Kaisha Toshiba Electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, battery pack, and vehicle
JP2015198038A (en) * 2014-04-02 2015-11-09 信越化学工業株式会社 Negative electrode for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery
US10026959B2 (en) 2014-05-23 2018-07-17 Semiconductor Energy Laboratory Co., Ltd. Negative electrode active material including first, second, and third regions and power storage device including the negative electrode active material
WO2015177665A1 (en) * 2014-05-23 2015-11-26 Semiconductor Energy Laboratory Co., Ltd. Negative electrode active material and power storage device
JPWO2016009590A1 (en) * 2014-07-15 2017-04-27 信越化学工業株式会社 Non-aqueous electrolyte secondary battery negative electrode material and method for producing negative electrode active material particles
WO2016009590A1 (en) * 2014-07-15 2016-01-21 信越化学工業株式会社 Negative electrode material for nonaqueous electrolyte secondary battery and method for producing negative electrode active material particle
US10529984B2 (en) 2014-07-15 2020-01-07 Shin-Etsu Chemical Co., Ltd. Negative electrode material for non-aqueous electrolyte secondary battery and method of producing negative electrode active material particles
KR101777917B1 (en) 2014-08-26 2017-09-12 주식회사 엘지화학 Surface coated cathode active material, preparation method thereof and lithium secondary battery comprising the same
JP2016062829A (en) * 2014-09-19 2016-04-25 株式会社東芝 Negative electrode material for nonaqueous electrolyte secondary battery, negative electrode for nonaqueous electrolyte secondary battery, nonaqueous electrolyte secondary battery, and battery pack
JP2016062860A (en) * 2014-09-22 2016-04-25 株式会社東芝 Electrode active material for nonaqueous electrolyte secondary battery, and nonaqueous electrolyte secondary battery including the same
US10312507B2 (en) 2015-01-28 2019-06-04 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
CN105449201B (en) * 2015-01-28 2018-06-22 万向一二三股份公司 A kind of preparation method of power-type high vibration high density lithium iron phosphate composite material
CN107210442A (en) * 2015-01-28 2017-09-26 三洋电机株式会社 Anode for nonaqueous electrolyte secondary battery active material and rechargeable nonaqueous electrolytic battery
CN105449201A (en) * 2015-01-28 2016-03-30 万向A一二三系统有限公司 Preparation method of power-type high-tap density lithium iron phosphate composite material
US10516158B2 (en) 2015-01-28 2019-12-24 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
US10516153B2 (en) 2015-01-28 2019-12-24 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery
WO2016121321A1 (en) * 2015-01-28 2016-08-04 三洋電機株式会社 Negative electrode active material for non-aqueous electrolyte secondary batteries, and non-aqueous electrolyte secondary battery
CN107112534A (en) * 2015-01-28 2017-08-29 三洋电机株式会社 Anode for nonaqueous electrolyte secondary battery active material and rechargeable nonaqueous electrolytic battery
US10312516B2 (en) 2015-01-28 2019-06-04 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
WO2016121320A1 (en) * 2015-01-28 2016-08-04 三洋電機株式会社 Negative-electrode active material for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
CN105895892A (en) * 2015-02-16 2016-08-24 信越化学工业株式会社 Negative electrode active material for non-aqueous electrolyte secondary battery containing the same, non-aqueous electrolyte secondary battery, and method of producing said electrode material
US10177403B2 (en) 2015-02-23 2019-01-08 Sanyo Electric Co., Ltd. Negative-electrode active material for non-aqueous electrolyte secondary battery, negative electrode for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
JP2016207446A (en) * 2015-04-22 2016-12-08 信越化学工業株式会社 Negative electrode active material for nonaqueous electrolyte secondary battery, method of manufacturing the same, nonaqueous electrolyte secondary battery using the same, and method of manufacturing negative electrode material for nonaqueous electrolyte secondary battery
WO2016204366A1 (en) * 2015-06-15 2016-12-22 대주전자재료 주식회사 Anode material for non-aqueous electrolyte secondary battery, preparation method therefor, and non-aqueous electrolyte secondary battery including same
KR101902071B1 (en) * 2015-10-26 2018-11-02 주식회사 엘지화학 Negative electrode active particle and method for manufacturing the same
WO2017141661A1 (en) * 2016-02-15 2017-08-24 信越化学工業株式会社 Anode active material, mixed anode active material ingredient, anode for nonaqueous electrolytic secondary battery, lithium ion secondary battery, and method for manufacturing anode active material
WO2019142744A1 (en) * 2018-01-19 2019-07-25 三洋電機株式会社 Non-aqueous electrolyte secondary battery

Also Published As

Publication number Publication date
JP4533822B2 (en) 2010-09-01

Similar Documents

Publication Publication Date Title
JP5162825B2 (en) Negative electrode for non-aqueous electrolyte secondary battery and non-aqueous electrolyte secondary battery using the same
JP4602306B2 (en) Anode active material for non-aqueous electrolyte battery, non-aqueous electrolyte battery, battery pack and automobile
JP4625744B2 (en) Nonaqueous electrolyte battery and battery pack
JP4317571B2 (en) Active material, electrode, battery, and method for producing active material
JP3997702B2 (en) Nonaqueous electrolyte secondary battery
CN1324736C (en) Positive electrode active material and non-aqueous electrolyte secondary battery containing the same
US9373836B2 (en) Active material for battery, non-aqueous electrolyte battery and battery pack
KR20120099375A (en) Metal oxide coated positive electrode materials for lithium-based batteries
JP2006066341A (en) Nonaqueous electrolyte secondary cell
JP2004087299A (en) Positive electrode active material and nonaqueous electrolyte secondary battery
JP5888378B2 (en) Positive electrode active material for secondary battery, positive electrode for secondary battery and secondary battery
EP1653534B1 (en) Conductive agent - positive active material composite for lithium secondary battery, method of preparing the same, and positive electrode and lithium secondary battery comprising the same
JP5151278B2 (en) Negative electrode for secondary battery and secondary battery
CN101179140B (en) Nonaqueous electrolyte battery, lithium titanium composite oxide and battery pack
US10230098B2 (en) Active material for battery, manufacturing method of the same, non-aqueous electrolytic battery and battery pack
JP3543437B2 (en) Positive electrode active material and non-aqueous electrolyte secondary battery using this positive electrode active material
JP4061586B2 (en) Positive electrode active material for nonaqueous electrolyte secondary battery and nonaqueous electrolyte secondary battery using the same
JP5389143B2 (en) Non-aqueous electrolyte battery
JP5205424B2 (en) Positive electrode material for lithium secondary battery, lithium secondary battery, and secondary battery module using the same
US7655358B2 (en) Positive active material composition for rechargeable lithium battery and method of preparing positive electrode using same
JP3769291B2 (en) Non-aqueous electrolyte battery
CN1220292C (en) Nonaqueous electrolyte secondary battery
JP5235282B2 (en) Cathode active material and battery for non-aqueous electrolyte secondary battery
JP5492287B2 (en) Non-aqueous electrolyte battery, battery pack and automobile
JP2006318797A (en) Nonaqueous electrolyte battery and lithium-titanium compound oxide

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20070126

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091203

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100108

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100309

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100330

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100427

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100518

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100614

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130618

Year of fee payment: 3