Abstract: The present invention provides a lithium composite metal oxide containing Li and at least one transition metal element, wherein at least one lithium composite metal oxide particle constituting the lithium composite metal oxide has both hexagonal and monoclinic crystal structures. Further, the present invention also provides a lithium composite metal oxide containing Li, Ni and M (where, M represents one or more kinds of transition metal elements selected from the group consisting of Mn, Co and Fe), having a diffraction peak (diffraction peak A) at an angle 2? in a range from 20° to 23° in a powder X-ray diffraction pattern of a lithium composite metal oxide which is obtained by powder X-ray diffraction measurement made in the condition that CuK? is used as a radiation source and the measurement range of diffraction angle 2? is in a range from 10° to 90°.

Abstract: A positive electrode material for a lithium secondary battery for high voltage high capacity use exhibiting high cycle durability and high safety. The positive electrode material is composed of particles having a composition represented by the general formula: LiaCobMgcAdOeFf (A is the group 6 transition element or the group 14 element, 0.90?a?1.10, 0.97?b?1.00, 0.0001?c?0.03, 0.0001?d?0.03, 1.98?e?2.02, 0?f?0.02 and 0.0001?c+d?0.03), and magnesium, the element A and fluorine exist uniformly in the vicinity of the surfaces of the particles.

Abstract: An electrode material for a lithium secondary battery which includes particles each having a central portion and a surface portion covering the surface of the central portion. A distance from a center to an outermost surface of the particle is occupied 80 to 99% by the central portion and 1 to 20% by the surface portion. The central portion includes LiM1-aDaO2 having an ?-NaFeO2 structure, and the surface portion includes LiM1-bEbO2 having an ?-NaFeO2 structure. (M is C or Ni; D is a transition metal element or Al replacing a part of Co or Ni as M; E is a metal element replacing a part of Co or Ni as M; and M is not the same as D or E.) The following relationships are satisfied in the central portion, in terms of atomic ratio: D/(M+D+E)<0.05 and E/(M+D+E)<0.05.

Abstract: In order to manufacture a lithium secondary battery having excellent performances in safety under overcharge condition, cycle property, electric capacity, and storage endurance, 0.1 wt. % to 10 wt. % of a tert-alkylbenzene compound is favorably incorporated into a non-aqueous electrolytic solution comprising a non-aqueous solvent and an electrolyte, preferably in combination with 0.1 wt. % to 1.5 wt. % of a biphenyl compound.

Abstract: A rechargeable lithium-ion cell contains a positive electrode, negative electrode, charge-carrying electrolyte containing charge carrying medium and lithium salt, and cycloaliphatic N-oxide compound dissolved in or dissolvable in the electrolyte. The N-oxide compound has an oxidation potential above the positive electrode recharged potential and serves as a cyclable redox chemical shuttle providing cell overcharge protection.

Abstract: A non-aqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material and a non-aqueous electrolyte, characterized in that lithium transition metal complex oxide A formed by allowing LiCoO2 to contain at least both of Zr and Mg and lithium transition metal complex oxide B having a layered structure and containing at least both of Mn and Ni as transition metals are mixed and used as said positive active material, and vinylene carbonate and divinyl sulfone are contained in said non-aqueous electrolyte.

Abstract: Composite cathode active materials having a large diameter active material and a small diameter active material are provided. The ratio of the average particle diameter of the large diameter active material to the average particle diameter of the small diameter active material ranges from about 6:1 to about 100:1. Mixing the large and small diameter active materials in a proper weight ratio improves packing density Additionally, including highly stable materials and highly conductive materials in the composite cathode active materials improves volume density, discharge capacity and high rate discharge capacity.

Abstract: Lithium ion secondary batteries are described that have high total energy, energy density and specific discharge capacity upon cycling at room temperature and at a moderate discharge rate. The improved batteries are based on high loading of positive electrode materials with high energy capacity. This capability is accomplished through the development of positive electrode active materials with very high specific energy capacity that can be loaded at high density into electrodes without sacrificing performance. The high loading of the positive electrode materials in the batteries are facilitated through using a polymer binder that has an average molecular weight higher than 800,000 atomic mass unit.

Abstract: A nonaqueous electrolyte secondary battery includes: an outer housing; a nonaqueous electrolyte filled in the outer housing, a positive electrode housed in the outer housing, a negative electrode housed in the outer housing and a separator disposed between the negative electrode and the positive electrode. The nonaqueous electrolyte comprises a nonaqueous solvent including diethyl carbonate and at least one of ethylene carbonate and propylene carbonate, and the nonaqueous electrolyte has a content of the diethyl carbonate of from 80 to 95% by volume. The positive electrode comprises a positive electrode active substance having a positive electrode potential in a full charged state of 4.4 V or higher with respect to a potential of metallic lithium. The negative electrode comprises a negative electrode active substance having a negative electrode potential in a full charged state of 1.0 V or higher with respect to a potential of metallic lithium.

Abstract: A cathode active material for a lithium rechargeable battery is provided. The cathode active material is used for a lithium rechargeable battery containing a cathode, an anode, and an electrolytic solution. The cathode active material is composed of 0.5% by weight or less carbonate ion (CO32?) plus bicarbonate ion (HCO3?) and 0.1% by weight or less hydroxyl ion (OH?). The swelling of lithium battery containing the cathode active material is substantially suppressed when is placed at 60° C. or more.

Abstract: A Ni-containing positive electrode active material for a nonaqueous electrolyte secondary battery is formed of secondary particles each constituted by aggregated primary particles. In cross sections of the secondary particles, a total cross-sectional area of part of the primary particles at least partially exposed at the surfaces of the secondary particles is at least 40% of a total cross-sectional area of the primary particles constituting the secondary particles.

Abstract: Cathode compositions for lithium-ion electrochemical cells are provided that have excellent stability at high voltages. These materials include a plurality of particles having an outer surface and a lithium electrode material in contact with at least a portion of the outer surface of the particles. The particles includes a lithium metal oxide that includes manganese, nickel, and cobalt, and the lithium electrode material has a recharged voltage that is lower vs. Li/Li+ than the recharged voltage of the particles vs. Li/Li+. Also included are methods of making the provided compositions.

Abstract: The present invention provides a high-capacity and low-cost non-aqueous electrolyte secondary battery, comprising: a negative electrode containing, as a negative electrode active material, a ssubstance capable of absorbing/desorbing lithium ions and/or metal lithium; a separator; a positive electrode; and an electrolyte, wherein the positive electrode active material contained in the positive electrode is composed of crystalline particles of an oxide containing two kinds of transition metal elements, the crystalline particles having a layered crystal structure, and oxygen atoms constituting the oxide forming a cubic closest packing structure.

Abstract: A lithium nickel manganese cobalt composite oxide used as a cathode active material for a lithium rechargeable battery, the composite oxide shown by the below general formula (1): LixNi1-y-zMnyCozO2??(1) (wherein 0.9?x?1.3, 0<y<1.0, and 0<z<1.0; and wherein y+z<1), the lithium nickel manganese cobalt composite oxide having an average particle size of 5-40 ?m, a BET ratio surface area of 5-25 m2/g, and a tap density of equal to or higher than 1.70 g/ml.

Abstract: A positive electrode for a secondary battery and a secondary battery. A mixture of at least a lithium metal oxide with a hexagonal crystal structure (belonging to the R3m space group) containing nickel (Ni) and a lithium manganese oxide with a rhombic crystal structure (belonging to the Pmmn space group) is used for the positive electrode active material. Furthermore, it is preferable for the lithium metal oxide described above to include manganese (Mn) and more preferable for cobalt (Co) to be included to improve the stability of the crystal structure. In addition, it is preferable for the proportion of the lithium manganese oxide in the mixture described above to be from 20% by weight to 80% by weight.

Abstract: Provided is a cathode active material including a lithium metal oxide of Formula 1 below: Li[LixMeyMz]O2+d ??<Formula 1> wherein x+y+z=1; 0<x<0.33; 0<z<0.1; 0?d?0.1; Me is at least one metal selected from the group consisting of Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, Mg, Zr, and B; and M is at least one metal selected from the group consisting of Mo, W, Ir, Ni, and Mg.

Abstract: A lithium secondary battery that is highly safe and has long life. The battery, which is a nonaqueous lithium secondary battery, utilizes a cathode active material comprising a complex oxide material having a layered structure containing at least Li and Ni and being represented by the chemical formula LixNia(MnyM1-y)b(COzM?1-z)cO2(0<x<1.2, 0<y<1, 0<z<1, a+b+c=1, 9b?5a+2.7, 0<a<1, 0<b<1, 0<c<1, M: quadrivalent element other than Mn, and M?: trivalent element other than Co).

Abstract: A nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The positive electrode comprises a positive electrode layer containing a metal compound. The metal compound contains lithium and at least one kind of metal selected from the group consisting of cobalt, nickel, manganese, iron and vanadium. The negative electrode comprises a negative electrode layer containing a negative electrode active material having a Li ion insertion potential not lower than 0.4 V (vs. Li/Li+). The positive electrode layer and the negative electrode layer satisfy formulas (1) to (3) given below: 0.5m2/g?Sn?50m2/g??(1) 5?(Sn/Sp)?100??(2) 0.5?(Lp/Ln)<1??(3).

Abstract: A lithium-ion battery includes a positive electrode that includes a positive current collector, a first active material, and a second active material. The lithium-ion battery also includes a negative electrode comprising a negative current collector, a third active material, and a quantity of lithium in electrical contact with the negative current collector. The first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions, and the second active material exhibits charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.

Abstract: A lithium-ion rechargeable cell is described which contains an electrolyte comprising a pyrazolium cation, an imidazolium cation, or a combination thereof, as well as lithium ion, and at least one non-Lewis acid derived counter-ion. Electrochemical cells containing an anode, a cathode, and the ionic liquid electrolytes preferably have effective charge/discharge capacity and charging efficiency at low temperatures and at high temperatures.

Abstract: A lithium-ion battery having an anode including an array of nanowires electrochemically coated with a polymer electrolyte, and surrounded by a cathode matrix, forming thereby interpenetrating electrodes, wherein the diffusion length of the Li+ ions is significantly decreased, leading to faster charging/discharging, greater reversibility, and longer battery lifetime, is described. The battery design is applicable to a variety of battery materials. Methods for directly electrodepositing Cu2Sb from aqueous solutions at room temperature using citric acid as a complexing agent to form an array of nanowires for the anode, are also described. Conformal coating of poly-[Zn(4-vinyl-4?methyl-2,2?-bipyridine)3](PF6)2 by electroreductive polymerization onto films and high-aspect ratio nanowire arrays for a solid-state electrolyte is also described, as is reductive electropolymerization of a variety of vinyl monomers, such as those containing the acrylate functional group.

Abstract: A positive electrode active material for a non-aqueous electrolyte battery comprising a lithium-containing transition metal oxide, produced with the use of a dry precursor obtained by: introducing an alkaline solution together with an aqueous solution containing two or more of transition metal salts or two kinds or more of aqueous solutions of different transition metal salts into a reaction vessel to obtain a hydroxide or an oxide as a precursor through coprecipitation with a reductant being coexistent or an inert gas being supplied; and drying the precursor at 300 to 500° C. to obtain a dry precursor.

Abstract: [Problem] A non-aqueous electrolyte battery is provided that shows good cycle performance and good storage performance under high temperature conditions and exhibits high reliability even with a battery configuration featuring high capacity. A method of manufacturing the battery is also provided.

Abstract: A lithium-ion battery includes a positive electrode that has a current collector and a first active material and a negative electrode that has a current collector, a second active material, and a third active material. The second active material includes a lithium titanate material and the third active material is a material that can be one or more of the following: LiMn2O4, LixVO2 where x is between 0.05 and 0.4, LiMxMn(2-x)O4 where M is a metal and x is less than or equal to 1, V6O13, V2O5, V3O8, MoO3, TiS2, WO2, MoO2, RuO2, and combinations thereof. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.

Abstract: Method of increasing charge-discharge capacity of a nonaqueous electrolyte secondary battery including a positive electrode containing a positive active material, a negative electrode containing a negative active material other than metallic lithium and a nonaqueous electrolyte. The battery is charged at an end-of-charge voltage of at least 4.3V. The positive active material includes lithium cobaltate in which Zr and Mg are contained by mixing their source materials in the preparation of the positive active material by a heat treatment, the Zr and Mg being contained in the lithium cobaltate in a total amount of not greater than 3 mole %, the Zr after heat treatment being present as particles of a Zr-containing compound that are sintered with particle surfaces of the lithium cobaltate, and the Zr being detected in the particles of the Zr-containing compound but not in the lithium cobaltate particles.

Abstract: The present invention generally relates to batteries or other electrochemical devices, and systems and materials for use in these, including novel electrode materials and designs. In some embodiments, the present invention relates to small-scale batteries or microbatteries. For example, in one aspect of the invention, a battery may have a volume of no more than about 5 mm3, while having an energy density of at least about 400 W h/l. In some cases, the battery may include a electrode comprising a porous electroactive compound. In some embodiments, the pores of the porous electrode may be at least partially filled with a liquid such as a liquid electrolyte. The electrode may be able to withstand repeated charging and discharging. In some cases, the electrode may have a plurality of protrusions and/or a wall (which may surround the protrusions, if present); however, in other cases, there may be no protrusions or walls. The electrode may be formed from a unitary material.

Abstract: Novel process for the preparation of finely divided, nano-structured, olivine lithium metal phosphates (LiMPO.sub.4) (where metal M is iron, cobalt, manganese, nickel, vanadium, copper, titanium and mix of them) materials have been developed. This so called Polyol” method consists of heating of suited precursor materials in a multivalent, high-boiling point multivalent alcohol like glycols with the general formula HO—(—C2H4O—).sub.n-H where n=1-10 or HO—(—C3H6O—).sub.n.-H where n=1-10, or other polyols with the general formula HOCH2—(—C3H5OH—).sub.n-H where n=1-10, like for example the tridecane-1,4,7,10,13-pentaol. A novel method for implementing the resulting materials as cathode materials for Li.-ion batteries is also developed.

Abstract: A cathode active material of formula (1) below, and a lithium secondary battery using the same, have an extended cycle life and effective charging/discharging characteristics and include a compound of formula (1) below: LixCoyM1-yA2??(1) where 0.95?x?1.0; 0?y?1; M is at least one selected from the group consisting of Ni, Fe, Pb, Mg, Al, K, Na, Ca, Si, Ti, Sn, V, Ge, Ga, B, As, Zr, Mn, and Cr; and A is one selected from the group consisting of O, F, S, and P. The cathode active material has, as measured by Raman spectroscopy, a ratio of peak intensities between spinel and hexagonal A1g vibrational modes in an approximate range of 1:0.1-1:0.4, a ratio of peak intensities between hexagonal A1g and Eg vibrational modes in an approximate range of 1:0.9-1:3.5, and a ratio of peak intensities between spinel A1g and F2g vibrational modes in an approximate range of 1:0.2-1:0.4.

Abstract: A battery includes a positive electrode including a current collector and a first active material and a negative electrode including a current collector, a second active material, and a third active material. The first active material, second active material, and third active material are configured to allow doping and undoping of lithium ions. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.

Abstract: A nonaqueous electrolyte secondary battery is obtained which shows good cycle characteristics even when charged to a high voltage. The nonaqueous electrolyte secondary battery has a positive electrode containing a positive active material, a negative electrode containing a negative active material and a nonaqueous electrolyte, wherein a lithium-containing transition metal oxide having a layered structure is contained in the positive electrode as the positive active material, an additive which is reductively decomposed in the range of +3.0-1.3 V versus metallic lithium is contained in the nonaqueous electrolyte, and the battery after assembled is overdischarged until a potential of the positive electrode falls down to a reductive potential of the additive or below.

Abstract: This invention concerns a lithium rechargeable electrochemical cell containing electrochemical redox active compounds in the electrolyte. The cell is composed of two compartments, where the cathodic compartment comprises a cathodic lithium insertion material and one or more of p-type redox active compound(s) in the electrolyte; the anodic compartment comprises an anodic lithium insertion material and one or more of n-type redox active compound(s) in the electrolyte. These two compartments are separated by a separator and the redox active compounds are confined only in each compartment. Such a rechargeable electrochemical cell is suitable for high energy density applications. The present invention also concerns the general use of redox active compounds and electrochemically addressable electrode systems containing similar components which are suitable for use in the electrochemical cell.

Abstract: A life of a secondary battery is extended, increase in a resistance when storing a secondary battery at an elevated temperature is prevented, and increase in a resistance during a charge-discharge cycle is prevented. A positive electrode active material comprising a lithium manganate and a lithium nickelate are used. The lithium manganate is a compound represented by the following formula (1) or the compound in which some of Mn or O sites are replaced with another element: Li1+xMn2?xO4??(1) (in the above-shown formula (1), 0.15?x?0.24).

Abstract: A method of producing Liy[NixCo1?2xMnx]O2 wherein 0.025?x?0.5 and 0.9?y?1.3. The method includes mixing [NixCo1?2xMnx]OH2 with LiOH or Li2CO3 and one or both of alkali metal fluorides and boron compounds, preferably one or both of LiF and B2O3. The mixture is heated sufficiently to obtain a composition of Liy[NixCo1?2xMnx]O2 sufficiently dense for use in a lithium-ion battery cathode. Compositions so densified exhibit a minimum reversible volumetric energy characterized by the formula [1833-333x] measured in Wh/L.

Abstract: This invention provides a hybrid nano-filament composition for use as an electrochemical cell electrode. The composition comprises: (a) an aggregate of nanometer-scaled, electrically conductive filaments that are substantially interconnected, intersected, or percolated to form a porous, electrically conductive filament network comprising substantially interconnected pores, wherein the filaments have an elongate dimension and a first transverse dimension with the first transverse dimension being less than 500 nm (preferably less than 100 nm) and an aspect ratio of the elongate dimension to the first transverse dimension greater than 10; and (b) micron- or nanometer-scaled coating that is deposited on a surface of the filaments, wherein the coating comprises an anode active material capable of absorbing and desorbing lithium ions and the coating has a thickness less than 20 ?m (preferably less than 1 ?m). Also provided is a lithium ion battery comprising such an electrode as an anode.

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: A lithium ion battery particularly configured to be able to discharge to a very low voltage, e.g. zero volts, without causing permanent damage to the battery. More particularly, the battery is configured to define a Zero Volt Crossing Potential (ZCP) which is lower than a Damage Potential Threshold (DPT).

Abstract: Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least 1.7 g/cm3 and a pressed density of 3.5 to 4.0 g/cm3. A method for manufacturing the lithium cobalt oxide includes the step of selecting a lithium cobalt oxide (A) and a lithium cobalt oxide (B) so that a difference in the tap density between the lithium cobalt oxide (A) and the lithium cobalt oxide (B) is at least 0.2 g/cm3; and mixing the lithium cobalt oxide (A) and the lithium cobalt oxide (B).

Abstract: Composite cathode active materials comprising a composite oxide and an acid treated with an organic solvent are provided. The composite cathode active materials are prepared by treating mixtures of nickel-based composite oxides and organic acids with organic solvents. The active materials suppress gelation of the electrode slurries for a long period of time, even when the active materials are mixed with fluorine-based polymers, by decreasing the basicity of the slurries and the amount of lithium present on the surfaces of the active materials. As a result, electrode slurries having high stability can be prepared. Cathodes and lithium batteries comprising the slurries have excellent charge-discharge characteristics, including high capacity and excellent high rate discharge characteristics.

Abstract: Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least 1.7 g/cm3 and a pressed density of 3.5 to 4.0 g/cm3. A method for manufacturing the lithium cobalt oxide includes the step of selecting a lithium cobalt oxide (A) and a lithium cobalt oxide (B) so that a difference in the tap density between the lithium cobalt oxide (A) and the lithium cobalt oxide (B) is at least 0.2 g/cm3; and mixing the lithium cobalt oxide (A) and the lithium cobalt oxide (B).

Abstract: The present invention provides a lithium-containing composite oxide for a positive electrode for a lithium secondary battery, which has a large volume capacity density and high safety, and excellent durability for charge and discharge cycles and charge and discharge rate property, and its production method. The lithium-containing composite oxide is represented by the general formula LipNxMyOzFa (where N is at least one element selected from the group consisting of Co, Mn and Ni, M is at least one element selected from the group consisting of Al, Sn, alkaline earth metal elements and transition metal elements other than Co, Mn and Ni, 0.9?p?1.2, 0.965?x<2.00, 0<y?0.035, 1.9?z?4.2, and 0?a?0.

Abstract: An electrochemical cell comprises as an anode, a lithium transition metal oxide or sulphide compound which as a [B2]X4n? spinel-type framework structure of an A[B2]S4 spinel wherein A and B are metal cations selected from Li, Ti, V, Mn, Fe and Co, X is oxygen or sulphur, and n? refers to the overall charge of the structural unit [B2]X4 of the framework structure. The transition metal cation in the fully discharged state has a mean oxidation state greater than +3 for Ti, +3 for V, +3.5 for Mn, +2 for Fe and +2 for Co. The cell includes as a cathode, a lithium metal oxide or sulphide compound. An electrically insulative lithium containing liquid or polymeric electronically conductive electrolyte is provided between the anode and the cathode.

Abstract: A positive electrode for a lithium-ion secondary battery includes a positive-electrode mixture layer, which includes a positive-electrode active material containing lithium composite oxide, a conductive material, and a binder, and a current collector. The positive-electrode mixture layer contains a compound including sulfur and/or phosphorous, a first polymer serving as a main binder, and a second polymer different from the first polymer.

Abstract: Disclosed is a fabrication method for an electrode active material, and a lithium battery comprising an electrode active material fabricated therefrom. The fabrication method for an electrode active material comprises preparing an aqueous solution by dissolving a precursor that can simultaneously undergo positive ion substitution and surface-reforming processes in water; mixing and dissolving raw materials for an electrode active material with a composition ratio for a final electrode active material in the aqueous solution, thereby preparing a mixed solution; removing a solvent from the mixed solution, thereby forming a solid dry substance; thermal-processing the solid dry substance; and crushing the thermal-processed solid dry substance.

Abstract: A nonaqueous electrolyte secondary battery which comprises a positive electrode including particles of lithium-containing layered nickel oxide represented by a general formula LiaNixCoyAlzMbO2, wherein 0.3?a?1.05, 0.7?x?0.87, 0.1?y?0.27, 0.03?z?0.1, 0?b?0.1; M is at least one selected from metallic elements except Ni, Co and Al. In the binding energy of the oxygen 1s spectrum when measuring the particles by XPS, if the peak area appearing at 529 eV is set to D; the peak area appearing at 531 eV is set to E; oxygen concentration ratio is set to D/(D+E); and the oxygen concentration ratios at depths of L1 nm and L2 nm from the particle surface are respectively set to ?L1 and ?L2, the combination of L1 and L2 in which (?L2??L1)/?L2?0.1, L1?100, L2?500 is present.

Abstract: Lithium insertion compound having the following formula (I): Li?M?M1vM2wM3xM4yM5zB?(XO4??Z?)1??(I) M is selected from V2+, Mn2+, Fe2+, Co2+ and Ni2+; M1 is selected from Na+ and K+; M2 is selected from Mg2+, Zn2+, Cu2+, Ti2+, and Ca2+; M3 is selected from Al3+, Ti3+, Cr3+, Fe3+, Mn3+, Ga3+, and V3+; M4 is selected from Ti4+, Ge4+, Sn4+, V4+, and Zr4+; M5 is selected from V5+, Nb5+, and Ta5+; X is an element in oxidation state m, exclusively occupying a tetrahedral site and coordinated by oxygen or a halogen, which is selected from B3+, Al3+, V5+, Si4+, P5+, S6+, Ge4+ and mixtures thereof; Z is a halogen selected from F, Cl, Br and I; the coefficients ?, ?, v, w, x, y, z, ? and ? are all positive and satisfy the following equations: 0???2??(1); 1???2??(2); 0<???(3); 0???2??(3); 0???2??(4); ?+2?+3?+v+2w+3x+4y+5z+m=8????(5); and 0 < ? ? + v + w + x + y + z ? 0.1 , preferably, 0 < ? ? + v + w + x + y + z ? 0.05 . Methods for preparing these compounds.

Abstract: The positive electrode active material powder of the present invention is a positive electrode active material powder, including primary particles and aggregated particles of primary particles, wherein an average particle diameter of primary particles and aggregated particles of primary particles in the powder is 0.1 ?m or more and 3 ?m or less on a volume basis, the percentage of [volumetric sum of particles having a particle diameter of 5 ?m or more]/[volumetric sum of entire particles] is 10% or less, and a BET specific surface area of the powder is more than 2 m2/g and 7 m2/g or less. When this positive electrode active material powder is used for a nonaqueous electrolyte secondary battery, it becomes possible to exhibit a high discharge capacity and also exhibit a high output at a high current rate.

Abstract: An electrode for a lithium secondary battery including a sheet-like current collector and an active material layer carried on the current collector. The active material layer is capable of absorbing and desorbing lithium, and the active material layer includes a plurality of columnar particles having at least one bend. An angle ?1 formed by a growth direction of the columnar particles from a bottom to a first bend of the columnar particles, and a direction normal to the current collector is preferably 10° or more and less than 90°. When ?n+1 is an angle formed by a growth direction of the columnar particles from an n-th bend counted from a bottom of the columnar particles to an (n+1)-th bend, and the direction normal to the current collector, and n is an integer of 1 or more, ?n+1 is preferably 0° or more and less than 90°.

Abstract: There is provided a powder of a lithium transition-metal compound for a positive-electrode material in a lithium secondary battery, in which the use of the powder as that of a positive-electrode material in a lithium secondary battery achieves a good balance among improvement in battery performance, cost reduction, resistance to a higher voltage, and a higher level of safety. The powder of the lithium transition-metal compound for a positive-electrode material in a lithium secondary battery is characterized in that in a mercury intrusion curve obtained by mercury intrusion porosimetry, the amount of mercury intruded is in the range of 0.8 cm3/g to 3 cm3/g when the pressure is increased from 3.86 kPa to 413 MPa.

Abstract: Disclosed are an active material for non-aqueous electrolyte secondary battery usable as a power source for backup, which has a large battery capacity and which may prevent the increase in the internal resistance after a storage test; and a non-aqueous electrolyte secondary battery comprising the active material. The active material is used as a positive electrode active material or a negative electrode active material of a non-aqueous electrolyte secondary battery, and this is prepared by adding at least one additive element selected from a group consisting of Al, B, Nb, Ti and W to molybdenum dioxide; and the non-aqueous electrolyte secondary battery comprises the active material.

Abstract: A positive electrode material for a nonaqueous lithium secondary battery and a lithium secondary battery that has superior cycle life and safety and reduced internal resistance of the battery at low temperature is provided. The positive electrode material for a nonaqueous lithium secondary battery comprise a layered structured complex oxide expressed by a composition formula LiaMnxNiyCozM?O2, where 0<a?1.2, 0.1?x?0.9, 0?y?0.44, 0.1?z?0.6, 0.01???0.1, and x+y+z+?=1. A diffraction peak intensity ratio between the (003) plane and the (104) plane (I(003)/I(104)) in an X-ray powder diffractometry using a Cu—K? line in the X-ray source is not less than 1.0 and not more than 1.5.