Abstract: Disclosed are a positive active material for a rechargeable lithium battery that includes: a core including a lithium metal composite oxide having a layered structure; and a shell including a lithium metal composite oxide having a layered structure and having a different composition from the core, a lithium metal composite oxide having a spinel structure, or a combination thereof, wherein the shell is positioned on the surface of the core, a method of preparing the same, and a rechargeable lithium battery including the same.

Abstract: In a (001) pole figure of the active material particles, where a plane parallel to the substrate is defined as the equatorial plane, a Lotgering factor fa(001) of an A plane and a Lotgering factor fh(001) of a B plane satisfy both Expressions (1) and (2) below, the A plane being an equatorial cross section perpendicular to a line that connects the center of the (001) pole figure and a first point of maximum XRD intensity of peaks attributed to (001) planes at the outer periphery of the equatorial plane, the B plane being an equatorial cross section perpendicular to a line that connects the center of the (001) pole figure and a second point of minimum XRD intensity of peaks attributed to the (001) planes at the outer periphery of the equatorial plane: fa(001)>0.3 ??Expression (1) fa(001)?fb(001)<1.0 ??Expression (2).

Abstract: Disclosed is a cathode active material for secondary batteries comprising, a compound having a transition metal layer containing lithium as at least one compound selected from the following Formula 1: Li(Li3x±yM1?yPx)O2+z (1) wherein M is an element stable for a six-coordination structure, which is at least one selected from transition metals that belong to the first and second period elements; 0<x<0.1; 0<y<0.3; ?4x<z?4x; and 3x>y is satisfied in a case of 3x?y.

Abstract: Provided is a nonaqueous electrolyte secondary battery including a positive electrode, a negative electrode and a nonaqueous electrolyte, wherein the positive electrode has a positive active material containing a lithium transition metal composite oxide having an ?-NaFeO2-type crystal structure and represented by the composition formula: Li1+?Me1??O2 (wherein Me is a transition metal element including Co, Ni and Mn; and ?>0), and the negative electrode has a negative active material which contains a carbon material that is a mixture of graphite and amorphous carbon and in which the ratio of the amorphous carbon contained in the carbon material is 5 to 60% by mass.

Abstract: In one aspect of the present invention, an electrode useable in an electrochemical cell includes an electrically conductive substrate, nanostructured current collectors in electrical contact with the conductive substrate, and nanoparticles of a ternary orthosilicate composite coated on the nanostructured current collectors. The ternary orthosilicate composite comprises Li2MnxFeyCozSiO4, where x+y+z=1.

Abstract: The positive active material for a lithium secondary battery includes a lithium transition metal composite oxide having an ?-NaFeO2-type crystal structure and represented by the composition formula of Li1+?Me1??O2 (Me is a transition metal including Co, Ni and Mn and ?>0). The positive active material contains Na in an amount of no less than 1900 ppm and no more than 8000 ppm, and has a 50% particle size (D50) of 5 ?m or less in particle size distribution measurement.

Abstract: The invention provides a closed type battery comprising a battery element covered with a covering film and a heat fusion seal portion formed by heat fusion on a periphery of the covering film, wherein the cleaving strength upon an internal pressure rise of a seal portion positioned between a positive electrode terminal and a negative electrode terminal is larger than that of any other seal portion, and a safety valve adapted to release pressure upon a battery's internal pressure rise is located at a portion other than said inter-terminal seal portion. The invention also provides an assembled battery wherein a plurality of closed type batteries are stacked one upon another while a safety valve adapted to release pressure upon an increase in the internal pressure of the battery is located at a position in no contact with the covering film surface of an adjoining battery.

Abstract: Energy storage devices having hybrid anodes can address at least the problems of active material consumption and anode passivation that can be characteristic of traditional batteries. The energy storage devices each have a cathode separated from the hybrid anode by a separator. The hybrid anode includes a carbon electrode connected to a metal electrode, thereby resulting in an equipotential between the carbon and metal electrodes.

Abstract: The present invention relates to a cathode active material for a lithium secondary battery comprising: a core including a compound represented by chemical formula 1, and a shell including a compound represented by chemical formula 2, wherein the material composition of the core and the material composition of the shell are different; and a lithium secondary battery including the cathode active material for a lithium secondary battery.

Abstract: A positive active material including a lithium transition metal oxide with a layered or spinel structure; and a plurality of CNTs on a surface of the lithium transition metal oxide.

Abstract: The present invention provides a positive electrode active material for a nonaqueous electrolyte secondary battery which is capable of improving an initial discharge capacity and suppressing a decrease in discharge voltage and a decrease in battery capacity even in repeated charge-discharge cycles, a positive electrode using the active material, and a nonaqueous electrolyte secondary battery using the positive electrode. The positive electrode active material includes a particle 21 of a lithium transition metal composite oxide containing lithium, nickel, and manganese and having a layered structure; and a particle 22 of a compound of at least one element adhered to a portion of the surface of the particle 21 and selected from the rare earth elements with atomic numbers 59 to 71.

Abstract: (A) A cathode active material of a cathode includes a lithium phosphate compound represented by LiaM1bPO4 (M is Fe and the like, 0?a?2, b?1). (B) Fine pore distribution of the cathode measured by a mercury intrusion method indicates a peak P1 in a range where a pore diameter is equal to or more than about 0.01 micrometers and less than about 0.15 micrometers, and indicates a peak P2 in a range where the pore diameter is from about 0.15 micrometers to about 0.9 micrometers both inclusive. (C) A ratio I2/I1 between intensity I1 of the peak P1 and intensity I2 of the peak P2 is from about 0.5 to about 20 both inclusive. (D) Porosity of the cathode is from about 30 percent to about 50 percent both inclusive.

Abstract: A lithium titanate doped with a barium oxide and a manufacturing method thereof are provided. At first, a barium source material, a lithium source material and a titanium source material are mixed together to prepare a mixture. Then, a drying process is applied to the mixture. Thereafter, a sintering process is applied to the mixture after the drying process, thereby obtaining the lithium titanate doped with the barium oxide. The lithium titanate doped with the barium oxide has the following chemical formula: BaxLi4Ti5O12+x, wherein 0.006?x?0.12. A lithium ion battery is also provided, which has an excellent cycling stability, a fast charge-discharge capability and a high safety performance.

Abstract: A negative electrode active material layer 3 containing at least one element selected from the group consisting of silicon, germanium, and tin is formed on a negative electrode collector 1. A negative electrode 11 is prepared by forming a lithium metal layer on the negative electrode active material layer 3. Also prepared is a positive electrode 11 having a configuration in which a positive electrode active material layer 6 containing a composite oxide represented by a general formula Li1-xMO2, where 0.2?x?0.6, and M includes at least one transition metal selected from the group consisting of cobalt, nickel, and manganese, is formed on a positive electrode current collector 5. A lithium secondary battery 100 is assembled from the negative electrode 13, the positive electrode 11, and a separator 4.

Abstract: Disclosed is a cathode material comprising a mixture of an oxide powder (a) defined herein and an oxide powder (b) selected from the group consisting of an oxide powder (b1) defined herein and an oxide powder (b2) defined herein and a combination thereof wherein a mix ratio of the two oxide powders (oxide powder (a):oxide powder (b)) is 50:50 to 90:10. The cathode material uses a combination of an oxide powder (a) and 50% or less of an oxide powder (b) which can exert high capacity, high cycle stability, superior storage stability and high-temperature stability, thus advantageously exhibiting high energy density and realizing high capacity batteries.

Abstract: A secondary electrochemical cell comprises an anode, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte comprises at least one salt dissolved in at least one organic solvent. The separator in combination with the electrolyte has an area-specific resistance of less than about 2 ohm-cm2.

Abstract: Disclosed herein is a positive electrode active material prepared by mixing a lithium-containing compound, a compound containing a transition metal to be put into a solid solution, and a compound containing a metallic element M2 different from the transition metal, and firing the mixture to form composite oxide particles, depositing a compound containing at least one element selected from among sulfur (S), phosphorus (P) and fluorine (F) on surfaces of the particles, and firing the particles, whereby each of the particles is provided with a concentration gradient such that the concentration of the metallic element M2 increases from the center toward the surface of the particle, and at least one element selected from among (S), (P) and (F) is made present in the form of being aggregated at the surfaces of the composite oxide particles.

Abstract: The invention provides a closed type battery comprising a battery element covered with a covering film and a heat fusion seal portion formed by heat fusion on a periphery of the covering film, wherein the cleaving strength upon an internal pressure rise of a seal portion positioned between a positive electrode terminal and a negative electrode terminal is larger than that of any other seal portion, and a safety valve adapted to release pressure upon a battery's internal pressure rise is located at a portion other than said inter-terminal seal portion. The invention also provides an assembled battery wherein a plurality of closed type batteries are stacked one upon another while a safety valve adapted to release pressure upon an increase in the internal pressure of the battery is located at a position in no contact with the covering film surface of an adjoining battery.

Abstract: A positive electrode active material for lithium batteries includes secondary particles having primary particles and an amorphous material. A method of manufacturing the positive electrode active material includes mixing a lithium composite oxide and a lithium salt, and heat treating the mixture. A positive electrode includes the positive electrode active material, and a lithium battery includes the positive electrode.

Abstract: An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionicaily conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.

Abstract: A positive electrode active material includes: a particle containing a positive electrode material capable of intercalating and deintercalating an electrode reactant; and a film provided in at least a part of the particle and having a peak of C2H5S+, C3H7S+ or C4H9S+ obtained by cation analysis by time of flight secondary ion mass spectrometry.

Abstract: A lithium secondary battery according to the present invention includes a positive electrode containing a positive electrode active material capable of occluding/releasing lithium ions; a negative electrode containing a negative electrode active material capable of occluding/releasing lithium ions; a separator located between the positive electrode and the negative electrode; and an electrolyte having a lithium ion conductivity. The positive electrode active material contains a lithium nickel complex oxide substantially having an irreversible capacity; the negative electrode active material has lithium occluded thereto in advance; and in a completely discharged state of the lithium secondary battery when an environmental temperature is 25° C., an amount of lithium releasable from the negative electrode is larger than an irreversible capacity of the lithium secondary battery.

Abstract: A composite metal precursor including a composite metal hydroxide represented by Formula 1 below, wherein an amount of magnesium (Mg) in the composite metal hydroxide is less than or equal to 0.005 wt %, an electrode active material formed from the same, a positive electrode including the same, and a lithium secondary battery employing the same: (A1-x-yBxCy)(OH)2 ??[Formula 1] wherein in Formula 1, x, y, A, B, and C are as described in the detailed description.

Abstract: A positive electrode material for non-aqueous electrolyte secondary batteries having high rate characteristics and high energy density, and a battery using the same are provided. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode material, a conductive agent and a binder; a negative electrode; a separator; and a non-aqueous electrolyte, in which the positive electrode material contains core particles and a coating material that covers from 10% to 90% of the surfaces of the core particles, the core particles are formed of a compound represented by LiaMbPO4 (wherein M represents at least one element selected from Fe, Mn, Co and Ni, and satisfies the relations: 0<a?1.1 and 0<b?1), and the coating material part is formed of a compound which is capable of insertion and extraction of Li ions in the potential range exhibited by the core particles at the time of charge and discharge.

Abstract: An energy storage device includes a first electrode comprising a first material and a second electrode comprising a second material, at least a portion of the first and second materials forming an interpenetrating network when dispersed in an electrolyte, the electrolyte, the first material and the second material are selected so that the first and second materials exert a repelling force on each other when combined. An electrochemical device, includes a first electrode in electrical communication with a first current collector; a second electrode in electrical communication with a second current collector; and an ionically conductive medium in ionic contact with said first and second electrodes, wherein at least a portion of the first and second electrodes form an interpenetrating network and wherein at least one of the first and second electrodes comprises an electrode structure providing two or more pathways to its current collector.

Abstract: Disclosed are (1) a nonaqueous electrolytic solution for lithium battery comprising an electrolyte dissolved in a nonaqueous solvent, which contains at least one hydroxy acid derivative compound represented by the formulae (I) and (II) in an amount of from 0.

Abstract: The invention provides a method for producing a carbon material as a negative electrode active material that can dope and undope a sodium ion. The production method of a carbon material for a sodium secondary battery includes a step of heating at a temperature of 800 to 2500° C. a compound according to Formula (1), Formula (2) or Formula (3), and having 2 or more oxygen atoms, or a mixture of an aromatic derivative 1 having an oxygen atom in the molecule and an aromatic derivative 2 having a carboxyl group in the molecule and being different from the aromatic derivative 1.

Abstract: A method for preparing a electrode composite material includes providing an aluminum nitrate solution and introducing a number of electrode active material particles into the aluminum nitrate solution, mixing the plurality of electrode active material particles with the aluminum nitrate solution to form a mixture, and adding a phosphate solution into the mixture to react with the aluminum nitrate solution and form an aluminum phosphate layer on surfaces of the electrode active material particles. Lastly, the electrode active material particles with the aluminum phosphate layer formed on the surfaces thereof are heat treated.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a lithium compound and a negative electrode current collector supporting the lithium compound. A log differential intrusion curve obtained when a pore size diameter of the negative electrode is measured by mercury porosimetry has a peak in a pore size diameter range of 0.03 to 0.2 ?m and attenuates with a decrease in pore size diameter from an apex of the peak. A specific surface area (excluding a weight of the negative electrode current collector) of pores of the negative electrode found by mercury porosimetry is 6 to 100 m2/g. A ratio of a volume of pores having a pore size diameter of 0.05 ?m or less to a total pore volume is 20% or more.

Abstract: A non-aqueous electrolyte battery includes an electrode group includes a positive electrode and a negative electrode disposed through a separator, and a non-aqueous electrolyte. The negative electrode comprises a current collector and a porous negative electrode layer formed on the current collector and containing a lithium compound. The porous negative electrode layer has a first peak at a pore diameter of 0.04 to 0.15 ?m and a second peak at a pore diameter of 0.8 to 6 ?m in the relation between the pore diameter and log differential intrusion obtained in the mercury press-in method.

Abstract: An electrode thin film to be used in an all-solid lithium battery is formed predominantly of lithium cobaltate and has a density larger than or equal to 3.6 g/cm3 and smaller than or equal to 4.9 g/cm3.

Abstract: A positive electrode active material has an average particle diameter of 4.5 to 15.5 ?m and a specific surface area of 0.13 to 0.80 m2/g. A positive electrode mixture layer contains at least one of a silane coupling agent and/or at least one of aluminum, titanium, or zirconium based coupling agent having an alkyl or an alkoxy groups having 1 to 18 carbon atoms at a content of 0.003% by mass or more and 5% by mass or less with respect to the mass of the positive electrode active material. The nonaqueous electrolyte contains a 1,3-dioxane derivative at a content of 0.05% by mass or more with respect to the total mass of the nonaqueous electrolyte. Thus a nonaqueous secondary battery that has good high-temperature cycle characteristics and suppresses an increase in self-discharge after repetition of charge and discharge cycles at high temperature is provided.

Abstract: The non-aqueous secondary battery of the present invention includes a positive electrode, a negative electrode, a non-aqueous electrolyte, and a separator, the negative electrode contains a negative electrode active material containing a graphitic carbon material and a composite in which a carbon coating layer is formed on a surface of a core material containing Si and O as constituent elements, the composite has a carbon content of 10 to 30 mass %, the composite has an intensity ratio I510/I1343 of a peak intensity I510 at 510 cm?1 derived from Si to a peak intensity I1343 at 1343 cm?1 derived from carbon of 0.25 or less when a Raman spectrum of the composite is measured at a laser wavelength of 532 nm, and the half-width of the (111) diffraction peak of Si is less than 3.0° when the crystallite size of an Si phase contained in the core material is measured by X-ray diffractometry using CuK? radiation.

Abstract: A positive electrode active material having a lithium-excess lithium-transition metal composite oxide particle represented by the chemical formula Li1.2Mn0.54Ni0.13Co0.13O2. The lithium-excess lithium-transition metal composite oxide particle has an inner portion (1) having a layered structure and a surface adjacent portion (2) having a crystal structure gradually changing from a layered structure to a spinel structure from the inner portion (1) toward the outermost surface portion (3). The layered structure and the spinel structure have an identical ratio of the amount of Mn and the total amount of Ni and Co.

Abstract: This invention provides a multi-layer article comprising a first electrode material, a second electrode material, and a porous separator disposed between and in contact with the first and the second electrode materials, wherein the porous separator comprises a nanoweb consisting essentially of a plurality of nanofibers of a fully aromatic polyimide. Also provided is a method for preparing the multi-layer article, and an electrochemical cell employing the same. A multi-layer article comprising a polyimide nanoweb with enhanced properties is also provided.

Abstract: Disclosed herein is a composite material for use as an anode for Li-ion batteries and its preparation method and use. The composite material comprises the components represented by the following formula: Ma1-Xa2—Sed1—Zd2—Cc, in which, M represents one or more selected from Sn, Al, Pb, Sb, Si and Bi; X represents one or more selected from Cu, V, Co, Ti, Mo, Mg, W and Zn; Z represents Si and/or Ge; and a1, a2, d1, d2 and c represent the weight ratio of M, X, Se, Z and C to the total amount of M, X, Se, Z and C, respectively, wherein a1+a2 is equal to 0.4-0.7, d1+d2 is equal to 0.05-0.6, c is equal to 0.01-0.25, d2/d1 ranges from 0 to 1/1.4, and a2/a1 ranges from 0 to 1/1.5.

Abstract: A lithium-ion cell comprising: (A) a cathode comprising graphene as the cathode active material having a surface area to capture and store lithium thereon and wherein said graphene cathode is meso-porous having a specific surface area greater than 100 m2/g; (B) an anode comprising an anode active material for inserting and extracting lithium, wherein the anode active material is mixed with a conductive additive and/or a resin binder to form a porous electrode structure, or coated onto a current collector in a coating or thin film form; (C) a porous separator disposed between the anode and the cathode; (D) a lithium-containing electrolyte in physical contact with the two electrodes; and (E) a lithium source disposed in at least one of the two electrodes when the cell is made. This new Li-ion cell exhibits an unprecedentedly high energy density.

Abstract: The present invention provides an electrode material in which unevenness in a supporting amount of a carbonaceous film is less when using an electrode-active material having a carbonaceous film on a surface thereof as the electrode material, and which is capable of improving conductivity, and a method for producing the electrode material. The electrode material includes an aggregate formed by aggregating an electrode-active material in which a carbonaceous film is formed on a surface. In the electrode material, an average particle size of the aggregate is 0.5 to 100 ?m, a volume density of the aggregate is 50 to 80 vol % of a volume density in a case in which the aggregate is a solid, and 80% or more of the surface of the electrode-active material is covered with the carbonaceous film. Alternatively, the electrode material includes an aggregate formed by aggregating electrode-active material particles in which a carbonaceous film is formed on a surface.

Abstract: The present technology is able to provide a solid electrolyte cell that uses a positive electrode active material which has a high ionic conductivity in an amorphous state, and a positive electrode active material which has a high ionic conductivity in an amorphous state. The solid electrolyte cell has a stacked body, in which, a positive electrode side current collector film, a positive electrode active material film, a solid electrolyte film, a negative electrode potential formation layer and a negative electrode side current collector film are stacked, in this order, on a substrate. The positive electrode active material film is made up with an amorphous-state lithium phosphate compound that contains Li; P; an element M1 selected from Ni, Co, Mn, Au, Ag, and Pd; and O, for example.

Abstract: A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode (21) includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.

Abstract: Positive electrode active materials are formed with various metal oxide coatings. Excellent results have been obtained with the coatings on lithium rich metal oxide active materials. Surprisingly improved results are obtained with metal oxide coatings with lower amounts of coating material. High specific capacity results are obtained even at higher discharge rates.

Abstract: The present invention provides a cathode active material for a lithium ion secondary battery excellent in the cycle characteristics and rate characteristics even when charged at a high voltage, a cathode, a lithium ion secondary battery and a method for producing a cathode active material for a lithium ion secondary battery. The cathode active material comprises particles (II) having an oxide (I) of at least one metal element selected from Zr, Ti and Al locally distributed at the surface of a lithium-containing composite oxide comprising Li element and at least one transition metal element selected from the group consisting of Ni, Co and Mn (provided that the molar amount of the Li element is more than 1.2 times the total molar amount of said transition metal element).

Abstract: An object of the present invention is to provide a high-capacity, low cycle deterioration lithium secondary battery in which the positive electrode is provided with a titanium composite oxide such as Li2NiTiO4. A lithium secondary battery 100 provided by the present invention includes a positive electrode 10 and a negative electrode 20. The positive electrode 10 has a solid solution between Li2M1TiO4 (where M1 is at least one metal element selected from the group consisting of Mn, Fe, Co, and Ni) and LiM2O2 (where M2 is at least one metal element selected from the group consisting of Mn, Co, and Ni).

Abstract: To provide a conductive agent for a nonaqueous electrolyte secondary battery and the like, in which oxidative decomposition reaction of an electrolyte is sufficiently suppressed during charging and discharging under high-temperature, high-voltage conditions and thus the cycle characteristics under these conditions are improved. A conductive agent main body composed of carbon and a compound attached to a surface of the conductive agent main body are contained. The average particle size of primary particles or secondary particles of the conductive agent main body is larger than the average particle size of the compound and the compound contains at least one metal element selected from the group consisting of aluminum, zirconium, magnesium, and a rare earth element.

Abstract: Embodiments of the present invention are directed to negative active materials for rechargeable lithium batteries including lithium titanium oxides. The lithium titanium oxide has a full width at half maximum (FWHM) of 2? of about 0.08054° to about 0.10067° at a (111) plane (main peak, 2?=18.330°) as measured by XRD using a Cu K? ray.

Abstract: The present invention provides composite anodes comprising particles composed of a silicon core and a lithium silicate outer layer, active and inactive anode materials, and a binder, ibr lithium rechargeable batteries, wherein the particles composed of a silicon core and a lithium silicate outer layer are prepared via treating silicon nanoparticles with lithium hydroxide in a wet process. A lithium rechargeable battery that comprises the composite anode is also contemplated. Cycle life and characteristics and capacity of a rechargeable battery adopting the composite anode can be greatly improved.

Abstract: According to one embodiment, a non-aqueous electrolyte battery includes an outer package, a positive electrode housed in the outer package, a negative electrode housed with a space from the positive electrode in the outer package and including an active material, and a non-aqueous electrolyte filled in the outer package. The active material includes a lithium-titanium composite oxide particle, and a coating layer formed on at least a part of the surface of the particle and including at least one metal selected from the group consisting of Mg, Ca, Sr, Ba, Zr, Fe, Nb, Co, Ni, Cu and Si, an oxide of at least one metal selected from the group or an alloy containing at least one metal selected from the group.

Abstract: The present invention relates to a particulate lithium transition metal phosphate with a homogeneous carbon coating deposited from the gas phase with as well as a process for its manufacture. The invention further relates the use of a carbon coated lithium transition metal phosphate as active material in an electrode, especially in a cathode.

Abstract: A production method for an electrode for a battery includes preparing a conductive substrate, and electrode material particles having ion conduction anisotropy; and producing an electrode by attaching the electrode material particles onto the conductive substrate, and applying a magnetic field in a predetermined direction.

Abstract: A secondary battery includes: a cathode; an anode; and an electrolytic solution. The cathode includes two or more kinds of lithium transition metal complex phosphate particles including lithium and one or two or more transition metals as constituent elements, and the composition of the one or two or more transition metals differs between the two or more kinds of lithium transition metal complex phosphate particles.