Abstract: Composite silicon based materials are described that are effective active materials for lithium ion batteries. The composite materials comprise processed, e.g., high energy mechanically milled, silicon suboxide and graphitic carbon in which at least a portion of the graphitic carbon is exfoliated into graphene sheets. The composite materials have a relatively large surface area, a high specific capacity against lithium, and good cycling with lithium metal oxide cathode materials. The composite materials can be effectively formed with a two step high energy mechanical milling process. In the first milling process, silicon suboxide can be milled to form processed silicon suboxide, which may or may not exhibit crystalline silicon x-ray diffraction. In the second milling step, the processed silicon suboxide is milled with graphitic carbon. Composite materials with a high specific capacity and good cycling can be obtained in particular with balancing of the processing conditions.

Abstract: A positive electrode material for a lithium secondary battery of the present disclosure includes a positive electrode active material, a barium titanate-based dielectric, and at least one of Compound I which contains the element Ba and has the largest peak at a position with 2?=24° to 26° in an X-ray diffraction pattern obtained according to X-ray diffraction measurement using CuK? rays; and Compound II which contains the element Ti and has the largest peak at a position with 2?=26° to 28° in an X-ray diffraction pattern obtained according to X-ray diffraction measurement using CuK? rays. At least one of Compounds I and II is disposed in contact with the dielectric.

Abstract: A method for producing a positive electrode active material for nonaqueous electrolyte secondary batteries, includes: a mixing step of adding a W compound powder having a solubility A adjusted to 2.0 g/L or less to a Li-metal composite oxide powder and stirring in water washing of the composite oxide powder, the solubility A being determined by stirring the W compound in water having a pH of 12.5 at 25° C. for 20 minutes, the composite oxide powder being represented by the formula: LicNi1-x-yCoxMyO2 and composed of primary and secondary particles, followed by solid-liquid separation, to thereby obtain a tungsten-containing mixture with the tungsten compound dispersed in the composite oxide powder; and a heat-treating step of heat-treating the mixture to uniformly disperse W on the surface of primary particles and thereby form a compound containing W and Li from the W and Li in the mixture, on the surface of primary particles.

Abstract: Lithium ion secondary batteries are disclosed that include a positive electrode comprising a lithium nickel composite oxide as a positive electrode active material and a separator consisting of one or more layers selected from polyimide layer, polyamide layer, the battery having a low self-discharge failure rate even after long term storage. The lithium ion secondary batteries can include a positive electrode comprising a lithium nickel composite oxide and a separator consisting of one or more layers selected from polyimide layer, polyamide layer, and polyamide imide layer, wherein the battery comprises an acid and/or an acid anhydride in an electrolyte solution and/or a member in contact with the electrolyte solution.

Abstract: A method of producing a negative electrode includes at least the following (A) to (C): (A) mixing powder consisting of lithium titanate oxide particles, a binder, and a solvent to prepare a particle-dispersed liquid; (B) granulating powder consisting of graphite-based particles by using the particle-dispersed liquid to prepare wet granules; and (C) forming the wet granules into a negative electrode composite material layer to produce a negative electrode. The negative electrode composite material layer is formed so as to include the lithium titanate oxide particles in an amount not lower than 2 mass % and not higher than 15 mass % of the total amount of the graphite-based particles and the lithium titanate oxide particles.

Abstract: A composite solid electrolyte with excellent formability and chemical stability and high lithium ion conductivity. The composite solid electrolyte may comprise an oxide-based solid electrolyte and a sulfide-based solid electrolyte, wherein the oxide-based solid electrolyte is (Li7-3Y-Z, AlY)(La3)(Zr2-Z, MZ)O12 (where M is at least one element selected from the group consisting of Nb and Ta; Y is a number in a range of 0?Y<0.22; and Z is a number in a range of 0?Z?2), and wherein the sulfide-based solid electrolyte is VLiX-(1?V)((1?W)Li2S-WP2S5) (where X is a halogen element; V is a number in a range of 0<V<1; and W is a number in a range of 0.125?W?0.30).

Abstract: An electrochemical device includes a negative electrode containing a negative electrode active material, a positive electrode, and an electrolyte. The negative electrode active material has a crystal structure with an Fm3m space group and contains a compound represented by composition formula (1) below, LixTiyOz ??Formula (1), where 0.4?x/y<2 and x/2+3y/2?z?x/2+2y.

Abstract: The present invention relates to a spherical or spherical-like cathode material for lithium-ion battery and a lithium-ion battery. The chemical formula of the cathode material is LiaNixCoyMnzMbO2, wherein: 1.02?a?1.20; 0.0?b?0.5; 0.30?x?0.60; 0.20?y?0.40; 0.05?z?0.50; x+y+z=1; M is one or two or more selected from the group consisting of Mg Ti Al Zr Y Co Mn Ni Ba and rare earth elements. Under the scanning electron microscope, the cathode material comprises primary particles with a morphology of spherical or spherical shape, and secondary particles agglomerated by the primary particles. The number percentage of the secondary particles agglomerated by the primary particles is less than or equal to 30%. The lithium battery prepared by the obtained cathode material has high specific capacity, high temperature stability, excellent safety and cycling performance at high temperature, and the preparation method thereof is simple and the cost is relatively low.

Abstract: An electrode material comprising a composite lithium metal oxide, which in an initial state has the formula: y[xLi2MO3.(1?x)LiM?O2].(1?y)Li1+dMn2?z?dM?zO4; wherein 0?x?1; 0.75?y<1; 0<z?2; 0?d?0.2; and z?d?2. M comprises one or more metal ions that together have an average oxidation state of +4; M? comprises one or more metal ions that together have an average oxidation state of +3; and M? comprises one or more metal ions that together with the Mn and any excess proportion of lithium, “d”, have a combined average oxidation state between +3.5 and +4. The Li1+dMn2?z?dM?zO4 component comprises a spinel structure, each of the Li2MO3 and the LiM?O2 components comprise layered structures, and at least one of M, M?, and M? comprises Co. Cells and batteries comprising the electrode material also are described.

Abstract: The present invention relates to an active material for a lithium secondary battery, which includes a secondary particle formed by agglomeration of primary particles which include a lithium titanium composite oxide represented by Formula 1 or Formula 2, wherein a pore volume is in a range of 0.001 cm3/g to 0.05 cm3/g, and a method of preparing the same, wherein the active material for a lithium secondary battery according to the present invention may maintain an adequate pore volume even during rolling, because strength of the secondary particle is improved by controlling a particle diameter of the primary particle by introducing a metallic element.

Abstract: The present invention relates to a composite oxide with x wt.-parts Li2TiO3, preferably in its cubic modification of space group Fm-3m, t wt.-parts TiO2, z wt.-parts of Li2CO3 or LiOH, u wt.-parts of a carbon source and optionally v wt.-parts of a transition or main group metal compound and/or a sulphur containing compound, wherein x is a number between 2 and 3, y is a number between 3 and 4, z is a number between 0.001 and 1, u is a number between 0.05 and 1 and 0?v<0.1 and the metal of the transition or main group metal compound is selected from Al, Mg, Ga, Fe, Co, Sc, Y, Mn, Ni, Cr, V or mixtures thereof. Further the present invention relates to the use of the composite oxide in a process for the preparation of a composition of a non-doped and doped lithium titianate Li4Ti5O12 comprising secondary agglomerates of primary particles and its use as anode material in secondary lithium-ion batteries.

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

Abstract: A positive electrode active material for a lithium ion battery includes a coating layer comprising amorphous carbon on a surface of a positive electrode active material, wherein the amorphous carbon is derived from carbon contained in an oxazine resin, a ratio of a peak intensity of a G band to a peak intensity of a D band is 1.0 or greater when the amorphous carbon is measured by Raman spectroscopy, an average film thickness of the coating layer is 100 nm or less, and a coefficient of variation (CV value) of a film thickness of the coating layer is 10% or less.

Abstract: According to an embodiment, there is provided a battery system. The battery system includes a first battery and a second battery connected in parallel with the first battery. The first battery includes a lead storage battery. The second battery includes a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The negative electrode includes a negative-electrode-mixture layer, and the negative-electrode-mixture layer contains lithium titanate. The positive electrode contains a positive electrode active material LiMn2-xM(a)xO4. A ratio of a battery capacity of the second battery to a battery capacity of the first battery is in a range of 1/133 to 1/2.

Abstract: A positive electrode active material which can improve cycle characteristics of a secondary battery is provided. Two kinds of regions are provided in a superficial portion of a positive electrode active material such as lithium cobaltate which has a layered rock-salt crystal structure. The inner region is a non-stoichiometric compound containing a transition metal such as titanium, and the outer region is a compound of representative elements such as magnesium oxide. The two kinds of regions each have a rock-salt crystal structure. The inner layered rock-salt crystal structure and the two kinds of regions in the superficial portion are topotaxy; thus, a change of the crystal structure of the positive electrode active material generated by charging and discharging can be effectively suppressed.

Abstract: The present invention relates to a negative electrode for a lithium secondary battery including a mesh-type insulating layer, and a lithium secondary battery including the same, and in particular, to a negative electrode for a lithium secondary battery including a mesh-type insulating layer formed on one surface of the lithium metal layer and having pores, and a lithium secondary battery including the same. The lithium secondary battery using the negative electrode induces a lithium dendrite precipitation and removal reaction inside pores of the insulating layer suppressing local lithium metal formation on the lithium metal surface and forming a uniform surface, and cell volume expansion may be suppressed therefrom, and forms a support layer on a passivation layer formed at the beginning preventing deintercalation and collapse of the passivation layer, and may enhance a battery lifetime by minimizing dead lithium while suppressing additional side reactions with a liquid electrolyte.

Abstract: A synthetic metal dichalcogenide having a highly defected nanocrystalline layered structure, wherein layer spacing is larger than in perfect crystals of the same material, wherein the defected structure provides access to interlayer crystals of the same material, and wherein the defected structure facilitates a pseudocapacitive charge storage mechanism. The metal dichalcogenide is receptive to intercalation of ions such as Li ions, Na ions, Mg ions, and Ca ions, and does not undergo a phase transition upon intercalation of Li ions, Na ions, Mg ions, or Ca ions. The metal dichalcogenide can be used, for example, as a component of an electrode that also includes a carbon derivative, and a binder, which are intermixed to form the electrode. The resultant composite electrode is highly porous and highly electronically conductive, and is suitable for use in devices such as symmetric capacitors, asymmetric capacitors, rocking chair batteries, and other devices.

Abstract: Provided is a lithium ion secondary battery including a power generating element that includes at least one positive electrode plate, at least one negative electrode plate, and at least one separator. A ratio B/A (m?cm) of volume resistivity B (m?cm3) of the power generating element to an area A (cm2) per one positive electrode plate is 0.4 or more and less than 0.9.

Abstract: A positive active material including a core including a compound capable of reversibly intercalating and deintercalating lithium and LiNaSO4 that is coated on at least a part of a surface of the core or that blends with the core.

Abstract: A power storage device having a laminated body and a portion of lower mechanical strength than the laminated body.

Abstract: A battery module according to one embodiment includes a first battery unit including a first nonaqueous electrolyte battery, and a second battery unit electrically connected in series to the first battery unit and including a second nonaqueous electrolyte battery. Each of the first and second nonaqueous electrolyte batteries includes a negative electrode including a spinel-type lithium titanate. The first nonaqueous electrolyte battery includes a positive electrode including at least one olivine-type lithium phosphate. The second nonaqueous electrolyte battery includes a positive electrode including at least one lithium-containing composite oxide. The discharge capacity ratio Ca/Cb between the first battery unit and the second battery unit satisfy 1.5<Ca/Cb?50.

Abstract: A cathode material may include a coating layer capable of preventing transition metal cations from being diffused between a cathode active material and a solid electrolyte when an all-solid state battery is charged and discharged, and a method for preparing the same.

Abstract: A lithium ion battery anode material, a method thereof and a lithium ion battery. The lithium ion battery anode material includes graphite carbon materials and functionalized graphene. The method of the lithium ion battery anode material includes the following steps: compounding a graphite phase carbon material and functionalized graphene by liquid phase compounding method or solid phase compounding method, to obtain a lithium ion battery composite material. The lithium ion battery anode material provided by the present invention has the advantages of high capacity, high initial coulombic efficiency, excellent cycle performance and low production cost.

Abstract: An electrode and a power storage device each of which achieves better charge-discharge cycle characteristics and is less likely to deteriorate owing to separation of an active material, or the like are manufactured. As the electrode for the power storage device, an electrode including a current collector and an active material layer that is over the current collector and includes a particle containing niobium oxide and a granular active material is used, whereby the charge-discharge cycle characteristics of the power storage device can be improved. Moreover, contact between the granular active material and the particle containing niobium oxide makes the granular active material physically fixed; accordingly, deterioration due to expansion and contraction of the active material which occur along with charge and discharge of the power storage device, such as powdering of the active material layer or its separation from the current collector, can be suppressed.

Abstract: A method of forming a high energy density composite cathode material is disclosed. The method includes providing a lithium-rich manganese layered oxide (LRMO), coating the LRMO with a TiO2 precursor, and ball-milling the TiO2 coated LRMO with LiH to form a LixTiO2 coated LRMO composite, wherein x is less than or equal to 1 and greater than zero.

Abstract: A positive electrode is configured by plurality of mutually bonded primary particles respectively composed of a lithium composite oxide having a layered rock-salt structure. An average orientation angle of the plurality of primary particles relative to a plate face direction parallel to a plate face is more than 0° and less than or equal to 30°. An aggregate surface area of primary particles that have an aspect ratio of greater than or equal to 4 is greater than or equal to 70% relative to a total area of the plurality of primary particles, in cross section.

Abstract: In an aspect, a positive active material for a rechargeable lithium battery including overlithiated layered oxide (OLO), a method of preparing the same, and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same is disclosed.

Abstract: The disclosed embodiments provide a battery cell. The battery cell includes an anode containing an anode current collector and an anode active material disposed over the anode current collector. The battery cell also includes a cathode containing a cathode current collector and a cathode active material disposed over the cathode current collector. The cathode active material has a composition represented by xLi2MO3·(1-x)LiCoyM?(1-y)O2.

Abstract: A positive electrode active material for a nonaqueous electrolyte secondary battery that is constituted by a lithium nickel composite oxide that combines a high capacity with excellent thermal stability, a manufacturing method suitable for industrial production, and a nonaqueous electrolyte secondary battery of high safety. A positive electrode active material for a nonaqueous electrolyte secondary battery includes a lithium nickel composite oxide represented by the following composition formula (1): LibNi1-aM1aO2??(1) (where M1 represents at least one element selected from transition metal elements other than Ni, elements of the second group of the Periodic System and elements of the thirteenth group of the Periodic System; a satisfies the condition 0.01?a?0.5; and b satisfies the condition 0.85?b?1.05). The content of carbon in the lithium nickel composite oxide is equal to or less than 0.08% by mass.

Abstract: The present disclosure relates to an electrode having improved safety and a secondary battery including the same. It is possible to prevent or significantly reduce an internal short-circuit between a positive electrode current collector and a negative electrode current collector and an internal short-circuit between a positive electrode current collector and a negative electrode active material layer, caused by nail penetration, by controlling the elongation of a positive electrode to 0.6-1.5%.

Abstract: Provided is a nickel-containing composite hydroxide that is a precursor of a positive-electrode active material with which a nonaqueous-electrolyte secondary battery having a low irreversible capacity and a high energy density can be configured. An aqueous alkaline aqueous solution and a complexing agent are added to an mixed aqueous solution including at least nickel and cobalt to regulate the pH (measured at a reference liquid temperature of 25° C.) of this mixed aqueous solution to 11.0 to 13.0, the ammonium concentration to 4 to 15 g/L, and the reaction temperature to 20° C. to 45° C. Using stirring blades having an inclination angle of 20° to 60° with respect to a horizontal plane, the mixture is stirred to conduct a crystallization reaction under such conditions that when the nickel-containing composite hydroxide to be obtained is roasted in air at 800° C. for 2 hours, the roasted composite hydroxide has a BET value of 12 to 50 m2/g.

Abstract: Provided is a cathode active material including a complex coating layer, which includes M below, formed on a surface of the cathode active material through reaction of a lithium transition metal oxide represented by Formula 1 below with a coating precursor: LixMO2??(1) wherein M is represented by MnaM?1-b, M? is at least one selected from the group consisting of Al, Mg, Ni, Co, Cr, V, Fe, Cu, Zn, Ti and B, 0.95?x?1.5, and 0.5?a?1. The lithium secondary battery including the cathode active material exhibits improved lifespan and rate characteristics due to superior stability.

Abstract: Provided is an electrode for a lithium ion secondary battery which includes an electrode current collector where an electrode active material mixture for a lithium ion secondary battery is disposed. The electrode active material mixture for a lithium ion secondary battery includes an electrode active material, a conductive agent containing carbon black, and a binder, and a maximum particle diameter (DMax_C) of the carbon black is smaller than a maximum particle diameter (DMax_E) of the electrode active material.

Abstract: Described herein are electrolyte compositions containing an organic carbonate, a fluorinated solvent, a cyclic sulfate, and at least one electrolyte salt. The cyclic sulfate can be represented by the formula: wherein each A is independently a hydrogen or an optionally fluorinated vinyl, allyl, acetylenic, propargyl, or C1-C3 alkyl group. The electrolyte compositions are useful in electrochemical cells, such as lithium ion batteries.

Abstract: A manganese nickel composite hydroxide which serves as a starting material for positive electrode active materials for secondary batteries, and the secondary battery having low resistance and high output characteristics. A manganese nickel composite hydroxide according to the present invention is represented by general formula (A) Mn1?x?yNixMy(OH)2+?(wherein 0?×?0.27, 0?y?0.05, 0???0.5, and M represents at least one element selected from among Mg, Al, Ca, Ba, Sr, Ti, V, Fe, Cr, Co, Cu, Zr, Nb, Mo and W), and has an SO4 content of 0.90% by weight or less, an Na content of 0.04% by weight or less, a BET specific surface area of from 40 m2/g to 70 m2/g (inclusive), and a value obtained by [(d90-d10)/(average particle diameter)] of 0.90 or less, said value being an index indicating the expanse of the particle size distribution.

Abstract: The present invention provides an electrolyte solution for a non-aqueous electrolyte battery capable of an exerting high average discharge voltage and an excellent low-temperature output characteristic at ?30° C. or lower and an excellent cycle characteristic and an excellent storage characteristic at high temperatures of 50° C. or higher, as well as a non-aqueous electrolyte battery containing the same. The present electrolyte solution comprises a non-aqueous solvent, a solute, at least one silane compound represented by the following general formula (1) as a first compound, and a fluorine-containing compound represented by the following general formula (3), for example, as a second compound.

Abstract: Provided are a cathode active material that has improved crystal-structure stability during continuous or high-voltage charging of a nonaqueous electrolyte rechargeable material, excellent cycle characteristics (capacity retention), and high capacity, as well as a cathode and a nonaqueous electrolyte rechargeable battery containing the cathode active material. The cathode active material has a composition represented by formula (1): Lix?yNayCowAlaMgbMcO2+? wherein x, y, w, a, b, c, and ? each denotes particular values; and M stands for at least one element selected from Ca, Y, rare earth elements, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Ni, Cu, Ag, Zn, B, Ga, C, Si, Sn, N, P, S, F, and Cl; wherein the cathode active material is in the form of lithium-containing composite oxide particles having a compound adhered on a surface thereof, the compound containing at least one element selected from Al, Mg, and M.

Abstract: Provided is an anode active material for energy storage devices capable of electrochemically inserting and extracting lithium ions and production method thereof, an electrode structure including the active material and flake graphite, and an energy storage device using the electrode structure as an anode. The anode active material includes secondary particles that are aggregates of 10-300 nm primary particles containing silicon as a main component. The primary particles each include, as a surface layer, a composite metal oxide layer containing at least one or more metal elements selected from at least Al, Zr, Mg, Ca, and La and Li.

Abstract: Provided is a nonaqueous electrolyte secondary battery in which Li3PO4 is added to a positive electrode active material layer and the increase of battery temperature when the voltage rises is suppressed. The nonaqueous electrolyte secondary battery disclosed herein includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution. The positive electrode has a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, Li3PO4, and acetic anhydride. The content of Li3PO4 in the positive electrode active material layer is 1% by mass or more and 15% by mass or less. The content of acetic anhydride in the positive electrode active material layer is 0.02% by mass or more and 0.2% by mass or less.

Abstract: A main object of the present disclosure is to provide a method for producing a sulfide solid electrolyte material, the method that allows a concentration of lithium halide to increase and that allows drying at a low temperature. The present disclosure achieves the object by providing a method for producing a sulfide solid electrolyte material, the method comprising: a drying step of drying a precursor aqueous solution containing LiI, LiBr, and LiOH to remove water and obtain a precursor mixture; and an electrolyte synthesizing step including a sulfidization treatment to sulfurize the LiOH in the precursor mixture and obtain LiHS, a de-sulfide-hydrogenating treatment to desorb a hydrogen sulfide from the LiHS and obtain Li2S, and a synthesizing treatment to make the Li2S to react with an auxiliary material; wherein a molar ratio of the LiOH with respect to the LiI and the LiBr, LiOH/(LiI+LiBr), in the precursor aqueous solution is 3 or more and less than 6.

Abstract: Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.

Abstract: The present invention provides a lithium secondary battery, including a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and a separator provided between the positive electrode and the negative electrode, wherein the negative electrode active material may include a titanium-based composite, wherein, when the lithium secondary battery is charged to SOC 50 under C-rate conditions of 0.1 to 40 C, the titanium-based composite has a ratio of the peak area of a plane (400) and the peak area of a plane (111) of 0.76 or more in a measured X-ray diffraction spectrum (XRD). Therefore, the present invention may provide a lithium secondary battery having excellent output characteristics and a battery pack in which a BMS prediction algorithm is simplified.

Abstract: According to one embodiment, there is provided a battery module. The battery module includes five nonaqueous electrolyte batteries electrically connected in series. The five nonaqueous electrolyte batteries each include a positive electrode, a negative electrode, and a nonaqueous electrolyte. The negative electrode includes an active material including a titanium-including composite oxide. The titanium-including composite oxide includes Na and a metal element M within a crystal structure. The metal element M is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al.

Abstract: According to an embodiment, an electrode is provided. The electrode group includes a stack. The stack includes a positive electrode, a negative electrode or negative electrodes, and separator. Each negative electrode includes a negative electrode current collector and a negative electrode layer provided on the negative electrode current collector. The electrode group satisfies following relational formulae (I) to (III): 10?a1/b1?16 (I); 0.7?D1/E1?1.4 (II); E1?85 (III). Here, the a1 [mm] is a thickness of the stack. The b1 [mm] is a thickness of the negative electrode current collector, or is a total thickness of the negative electrode current collectors. The D1 [?m] is a thickness of the positive electrode. The E1 [?m] is a thickness of the negative electrode.

Abstract: An electrolytic solution containing a heteroelement-containing organic solvent at a mole ratio of 3-5 relative to a metal salt, the heteroelement-containing organic solvent containing a specific organic solvent having a relative permittivity of not greater than 10 and/or a dipole moment of not greater than 5D, the metal salt being a metal salt whose cation is an alkali metal, an alkaline earth metal, or aluminum and whose anion has a chemical structure represented by general formula (1) below: (R1X1)(R2SO2)N??general formula (1).

Abstract: The present invention relates to a method of manufacturing an electrode current collector for a secondary battery and an electrode including an electrode current collector manufactured using the method. In particular, provided herein are a method of manufacturing an electrode current collector for a secondary battery which includes forming a CNT coating layer on a surface of an electrode current collector to increase electrical conductivity, and an electrode including an electrode current collector manufactured according to the method.

Abstract: According to an embodiment, there is provided a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator sandwiched between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Li-absorbing potential of 1 V vs. Li/Li+ or more. An electrical resistance of the negative electrode in a discharged state is within a range of 100 ?·cm to 100000 ?·cm. A pore volume ratio of pores having a pore diameter of 1 ?m or more in the separator is more than 70%. The pore volume ratio is determined from a cumulative pore volume frequency curve of the separator obtained by a mercury intrusion porosimetry.

Abstract: To show an LNCAO-type positive electrode active material for a lithium ion battery having a high discharge capacity per unit volume and excellent discharging capacity-holding properties. Nickel-lithium metal composite oxide powder includes a nickel-lithium metal composite oxide represented by General Formula (1) described below: LixNi1-y-zMyNzO1.7-2.2??(1), in which the breakdown strength of secondary particles is in a range of 80 MPa or less, the density is 3.30 g/cm3 or higher when compressed at a pressure of 192 MPa, and the density is 3.46 g/cm3 or higher when compressed at a pressure of 240 MPa. A method for producing the nickel-lithium metal composite oxide powder includes a water washing step after a firing step for producing a nickel-lithium metal composite oxide powder precursor.

Abstract: The present invention provides a cathode active material for a nonaqueous electrolyte secondary battery with a high capacity, high stability and excellent output characteristics and a method for producing the same, and a nonaqueous electrolyte secondary battery using the cathode active material. The cathode active material for a nonaqueous electrolyte secondary battery is represented by a general formula: LitNi1-x-y-zCoxAlyTizO2 wherein 0.98?t?1.10, 0<x?0.30, 0.03?y?0.15, 0.001?z?0.03; and includes a hexagonal lithium-containing composite oxide with a layer structure of secondary particles having primary particles, in which a titanium-enriched layer is formed on a surface of the primary particles and/or a grain boundary between the primary particles. The titanium-enriched layer on the surface of the primary particles and/or a grain boundary between the primary particles serves as a lithium ion conductor, yielding smooth extraction and insertion of lithium ions.

Abstract: A positive electrode for nonaqueous electrolyte secondary batteries and a nonaqueous electrolyte secondary battery are provided with which loss of initial efficiency can be limited even if a positive electrode exposed to air is used. An aspect of a positive electrode according to the present invention for nonaqueous electrolyte secondary batteries is a positive electrode for nonaqueous electrolyte secondary batteries incorporating a lithium transition metal oxide, wherein the positive electrode for nonaqueous electrolyte secondary batteries contains a tungsten compound and a boron compound. It is particularly preferred that the tungsten compound be a tungsten-containing oxide.