Abstract: A non-aqueous electrolyte secondary battery including: an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween; and a non-aqueous electrolyte including a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent, the positive electrode including a positive electrode material mixture layer containing a nickel-containing lithium composite metal oxide, wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 8 to 25%, where A (%) represents a porosity of the positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in the non-aqueous solvent.

Abstract: A porous tin particle and its preparation method are provided in the present invention. The method includes steps of: (a) performing a reductive (or reductive electrochemical) reaction on a tin particle which simultaneously reacts with lithium ions to form a tin-lithium (Sn—Li) alloy; and (b) performing an oxidative (or oxidative electrochemical) reaction on Sn—Li alloy to release the lithium ions therefrom, and the porous tin particle is formed. The porous tin particle could be further applied in manufacturing the electrochemical electrode for lithium-ion battery with longer cycle life and higher reversibility.

Abstract: A lithium-ion secondary battery includes a positive electrode, a negative electrode containing an active material, and an electrolytic solution, in which the active material contains, as constituent elements, Si, O, and at least one element Ml selected from Li, C, Mg, Al, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Ge, Zr, Mo, Ag, Sn, Ba, W, Ta, Na, and K, and the atomic ratio x (O/Si) of O to Si is 0.5?x?1.8.

Abstract: A battery includes a cathode, an anode, and an aqueous electrolyte disposed between the cathode and the anode and including a cation A. At least one of the cathode and the anode includes an electrode material having an open framework crystal structure into which the cation A is reversibly inserted during operation of the battery. The battery has a reference specific capacity when cycled at a reference rate, and at least 75% of the reference specific capacity is retained when the battery is cycled at 10 times the reference rate.

Abstract: An electrochemical cell in accordance with one embodiment of the invention includes a first electrode containing a first phase intermixed with a second phase and a network of interconnected pores. The first phase contains a ceramic material and the second phase contains an electrically conductive material providing an electrically contiguous path through the first electrode. The electrochemical cell further includes a second electrode containing an alkali metal. A substantially non-porous alkali-metal-ion-selective ceramic membrane, such as a dense Nasicon, Lisicon, Li ??-alumina, or Na ??-alumina membrane, is interposed between the first and second electrodes.

Abstract: A non-aqueous electrolyte secondary battery with excellent discharge cycle characteristics and a charging termination potential ranging from 4.4 to 4.6 V based on lithium, consisting of a positive electrode comprising a positive electrode active material, a negative electrode, and a non-aqueous electrolyte containing a non-aqueous solvent and an electrolyte salt, in which the positive electrode active material comprises a mixture of a lithium-cobalt composite oxide containing at least both zirconium and magnesium in LiCoO2, and a lithium-manganese-nickel composite oxide having a layered structure and containing at least both manganese and nickel, and the potential of the positive electrode active material ranges from 4.4 to 4.6 V based on lithium, and the non-aqueous electrolyte contains at least one of aromatic compounds selected from the group consisting at least of toluene derivatives, anisole derivatives, biphenyl, cyclohexyl benzene, tert-butyl benzene, tert-amyl benzene, and diphenyl ether.

Abstract: A method for producing a lithium alkali transition metal oxide for use as a positive electrode material for lithium secondary batteries by a precipitation method. The positive electrode material is a lithium alkali transition metal composite oxide and is prepared by mixing a solid state mixed with alkali and transition metal carbonate and a lithium source. The mixture is thermally treated to obtain a small amount of alkali metal residual in the lithium transition metal composite oxide cathode material.

Abstract: A positive electrode composition is described, containing granules of at least one electroactive metal and at least one alkali metal halide. The granules have a substantially spheroidal shape. An energy storage device and an uninterruptable power supply device are also described. They include compartments for positive and negative electrode compositions; a solid separator capable of transporting alkali metal ions between the compartments; and associated current collectors for the electrodes. The positive electrode composition contains substantially spheroidal granules. Related methods for the preparation of an energy storage device are also disclosed.

Abstract: Provided is a lithium ion rechargeable battery less suffering from swelling even when stored at high temperatures. Disclosed are a cathode active material, a cathode for a lithium ion rechargeable battery using the cathode active material, and a lithium ion rechargeable battery using the cathode. The cathode active material includes particles, each of the particles including a cathode material capable of intercalating and deintercalating lithium ions, and a film formed on at least part of surfaces of the particles. The film includes a compound represented by Chemical Formula (1). Examples of the compound represented by Chemical Formula (1) include lithium squarate and dilithium squarate. Preferably, the lithium ion rechargeable battery is a prismatic battery.

Abstract: A galvanic cell is disclosed. Generally, the cell includes an alkali metal anode, which electrochemcially oxidizes to release alkali metal ions, and a cathode, which is configured to be exposed to an electrolyte solution. A water-impermeable, alkali-ion-conductive ceramic membrane separates the anode from the cathode. Moreover, an alkali-ion-permeable anode current collector is placed in electrical communication with the anode. In some cases, to keep the anode in contact with the current collector as the cell functions and as the anode is depleted, the cell includes a biasing member that urges the anode against the current collector. To produce electricity, the galvanic cell is exposed to an aqueous electrolyte solution, such as seawater, brine, saltwater, etc.

Abstract: Disclosed is a secondary battery with a non-aqueous electrolyte that has excellent cycle characteristics and output characteristics. Also disclosed is a positive electrode active material for a secondary battery with a non-aqueous electrolyte that includes a powder of a volume resistivity of 20 ?·cm or more and 100 ?·cm or less when said powder has a bulk density of 3 g/cm3. The use of the lithium nickel composite oxide as a positive electrode active material can provide a secondary battery with a non-aqueous electrolyte that has excellent cycle characteristics and output characteristics.

Abstract: Lithium metal powder based inks are provided. The inks are provided in formulations suitable for printing using a variety of printing techniques, including screen printing, offset litho printing, gravure printing, flexographic printing, pad printing and inkjet printing. The inks include lithium metal powder, a polymer binder and optionally electrically conductive materials and/or lithium salts in a solvent. The inks are well suited for use in printing electrodes for use in lithium metal batteries. Batteries made from lithium powder based anodes and electronic applications such as RFID labels, Smart Cards and wearable medical devices are also provided.

Abstract: Batteries are disclosed. In some embodiments, a battery includes a cathode having a composition that includes a manganese oxide. The composition has an X-ray diffraction pattern with a first peak at about 18 degrees, a second peak at about 22 degrees, and a third peak at about 32 degrees.

Abstract: A primary battery includes a cathode having a non-stoichiometric metal oxide including transition metals Ni, Mn, Co, or a combination of metal atoms, an alkali metal, and hydrogen; an anode; a separator between the cathode and the anode; and an alkaline electrolyte.

Abstract: The present invention provides a method of producing a lithium mixed metal oxide, a lithium mixed metal oxide and a nonaqueous electrolyte secondary battery. The method includes a step of calcining a mixture of one or more compounds of M wherein M is one or more elements selected from the group consisting of nickel, cobalt and manganese, and a lithium compound, in the presence of one or more inactive fluxes selected from the group consisting of a fluoride of A, a chloride of A, a carbonate of A, a sulfate of A, a nitrate of A, a phosphate of A, a hydroxide of A, a molybdate of A and a tungstate of A, wherein A is one or more elements selected from the group consisting of Na, K, Rb, Cs, Ca, Mg, Sr and Ba. The lithium mixed metal oxide contains nickel, cobalt and manganese, has a BET specific surface area of from 3 m2/g to 15 m2/g, and has an average particle diameter within a range of 0.1 ?m or more to less than 1 ?m, the diameter determined by a laser diffraction scattering method.

Abstract: According to one embodiment, a battery active material includes a complex oxide containing Nb and Ti and an element M. In the active material, the molar ratio (M/Ti) of the element M to Ti satisfies the following formula (I): 0<M/Ti?0.5 (I). In the complex oxide containing Nb and Ti, the molar ratio (Nb/Ti) of Nb to Ti satisfies the following formula (II): 0?Nb/Ti?5 (II). The element M is at least one selected from the group consisting of B, Na, Mg, Al, Si, S, P, K, Ca, Mo, W, Cr, Mn, Co, Ni, and Fe.

Abstract: A positive electrode active material is made of sodium containing oxide. The sodium containing oxide contains NaALiBMO2±? that belongs to a space group P63/mmc of a hexagonal system, where the M includes at least one of manganese (Mn) and cobalt (Co). In the NaALiBMO2±?, the composition ratio A of sodium (Na) is not less than 0.5 and not more than 1.1, the composition ratio B of lithium (Li) is larger than 0 and not more than 0.3, and the ? is not less than 0 and not more than 0.3.

Abstract: A secondary battery, which may include an electrode assembly, a can having an upper opening to receive the electrode assembly and a cap assembly finishing the opening of the can is disclosed. The electrode assembly may include a positive electrode plate provided with a positive electrode active material layer, a negative electrode plate provided with a negative electrode active material layer, a separator interposed between the positive electrode plate and the negative electrode plate and an insulation coating layer coated on the positive electrode plate. The insulation coating layer may includes a first coating layer coated on the positive electrode coating portion. The insulation coating layer may contain olivine type lithium phosphate compound. A second coating layer coated on the first coating layer may contain ceramic powder and a binder.

Abstract: Alkali (or other active) metal battery and other electrochemical cells incorporating active metal anodes together with aqueous cathode/electrolyte systems. The battery cells have a highly ionically conductive protective membrane adjacent to the alkali metal anode that effectively isolates (de-couples) the alkali metal electrode from solvent, electrolyte processing and/or cathode environments, and at the same time allows ion transport in and out of these environments. Isolation of the anode from other components of a battery cell or other electrochemical cell in this way allows the use of virtually any solvent, electrolyte and/or cathode material in conjunction with the anode. Also, optimization of electrolytes or cathode-side solvent systems may be done without impacting anode stability or performance. In particular, Li/water, Li/air and Li/metal hydride cells, components, configurations and fabrication techniques are provided.

Abstract: Capacity degradation due to charge/discharge cycles is suppressed in either a non-aqueous electrolyte secondary cell provided with a positive electrode including, as a positive electrode active material, a lithium-transition metal complex oxide having a layered structure and containing at least Ni and Mn as transition metals, and a negative electrode containing a carbon material as a negative electrode active material and having a higher initial charge-discharge efficiency than that of the positive electrode, or an assembled battery having a plurality of cells each of which is the secondary cell. A control circuit incorporated in the secondary cell or the assembled battery, or in an apparatus using the secondary cell or the assembled battery, monitors the voltage of the secondary cell or each of the cells in the assembled battery so that the end-of-discharge voltage of each cell is 2.9 V or higher.

Abstract: A new invention in cathode composition, arrangement, and design for primary and secondary batteries that offers high power, high capacity, and high specific energy is proposed herein. The claimed technology described herein incorporates materials into the cathode that results in a cathode which may accept two electrons per active site. Other advantages of the technology included herein include: 1) lower cost, 2) environmental friendliness, 3) safety, 4) a wide operational temperature range, 5) backwards compatibility with present electrochemical cells, and 6) versatility. The technology is cross-cutting, and has high impact applications, such as for electric vehicles, which require both high power and high specific energy.

Abstract: In a non-aqueous electrolyte secondary battery 1 including a positive electrode 11, a negative electrode 12, a separator 14, a positive electrode lead 15, a negative electrode lead 16, a gasket 17, and a housing case 18, the negative electrode 12 including a negative electrode active material layer 12b including an alloy-formable active material, a resin layer 13 is formed on the surface of the negative electrode active material layer 12b. The resin layer 13 includes a resin component with lithium ion conductivity and an additive for non-aqueous electrolyte. This configuration enables the battery performance to be maintained at a high level and the battery swelling to be suppressed, even when the number of charge/discharge cycles is increased, providing the non-aqueous electrolyte secondary battery 1 with a high level of safety.

Abstract: A lithium ion battery that exhibits a significantly improved specific capacity and much longer charge-discharge cycle life. The battery comprises an anode active material that has been prelithiated and pre-pulverized. This anode may be prepared with a method that comprises (a) providing an anode active material; (b) intercalating or absorbing a desired amount of lithium into the anode active material to produce a prelithiated anode active material; (c) comminuting the prelithiated anode active material into fine particles with an average size less than 10 ?m (preferably <1 ?m and most preferably <200 nm); and (d) combining multiple fine particles of the prelithiated anode active material with a conductive additive and/or a binder material to form the anode. Preferably, the prelithiated particles are protected by a lithium ion-conducting matrix or coating material. Further preferably, the matrix material is reinforced with nano graphene platelets.

Abstract: The present invention discloses a composite material having an ionic and electronic conductive outer shell with an active material inner core located within the outer shell. The outer shell can be impervious to a gas and a liquid, and in some instances contains a compound such as SiO2, Al2O3, P2S5, and Li2S. The composite material may or may not have a secondary outer shell that is located on an exterior of the outer shell. The outer shell and/or the secondary outer shell can contain a compound such as SiO2, Al2O3, P2S5, and/or Li2S. In some instances, the outer shell contains Li2S:P2S5, while in other instances, the outer shell contains LiPON. In addition, the inner core can contain an element such as lithium, sodium, potassium, and the like.

Abstract: Composite compounds of tin and lithium, silicon and lithium, or tin, silicon, and lithium having tin and silicon nano-dispersed in a lithium-containing matrix may be used as electrode materials and particularly anode materials for use with rechargeable batteries. Methods of making the composite compounds include the oxidation of alloys, the reaction of stabilized lithium metal powder with tin and silicon oxides, and the reaction of inorganic salts of lithium with tin and silicon containing compounds.

Abstract: A negative electrode material for a non-aqueous electrolyte secondary battery, which comprises a negative electrode active material capable of absorbing and releasing a lithium ion and at least one salt selected from the group consisting of a carboxylic acid salt of an alkali metal, a carboxylic acid salt of an alkali earth metal, a sulfuric acid salt of an alkali metal, a sulfuric acid salt of an alkali earth metal, a boric acid salt of an alkali metal, a boric acid salt of an alkali earth metal, a phosphoric acid salt of an alkali metal and a phosphoric acid salt of an alkali earth metal.

Abstract: According to one embodiment, a non-aqueous electrolyte battery includes an outer container, a positive electrode housed in the outer container, a negative electrode housed in the outer container such as to spatially apart from the positive electrode and includes a particulate active material, and a non-aqueous electrolyte filled in the outer container, wherein the particulate active material includes a particle containing a substance having a lithium absorption and desorption potential of from 1 V vs. Li/Li+ to 3 V vs. Li/Li+, and a coating layer made of a spinel-type lithium-titanium composite oxide formed on the surface of the particle.

Abstract: A slurry composition for a positive electrode for a lithium ion secondary battery, comprising a polymer A wherein a HOMO value by a semiempirical method molecular orbital calculation is ?13.5 eV to ?10 eV and a content of ethylene repeating units is 30 mol % to 95 mol %; a polymer B wherein a HOMO value by a semiempirical method molecular orbital calculation is ?13.5 eV to ?10 eV, a glass transition temperature is ?80° C. to 0° C., and a gel content is 50 wt % or more; an active material for a positive electrode; a conductivity adding agent; and a liquid medium C in which the polymer A dissolves but the polymer B does not dissolve. According to the composition, a lithium ion secondary battery having a large battery capacity, a good charge/discharge cycle characteristic and an improved rate characteristic can be realized.

Abstract: The negative active material for a non-aqueous rechargeable battery includes a main component of lithium vanadium oxide, and at least one selected from the group consisting of Li3VO4, vanadium carbide, and mixtures thereof. The Li3VO4 is included in an amount of 0.5 to 3.0 wt % based on the total weight of the negative active material, and the vanadium carbide is included in amount of 0.5 wt % or less based on the total weight of the negative active material. The negative active material can improve discharge capacity of the non-aqueous rechargeable battery.

Abstract: In a molten salt battery 1, a positive electrode 2 including an active material film 22 arranged on an Al collector 21, a separator 3 formed of a glass cloth impregnated with a molten salt serving as an electrolyte, and a negative electrode 4 including an active material film 43 and a Zn film 42 arranged on an Al collector 41 are accommodated in an Al case 5. The active material film 43 contains an active material composed of a Sn—Na alloy. The active material film 22 and the active material film 43 occlude and emit Na ions of the molten salt. Thereby, provided are a negative electrode material for a battery, the negative electrode material having higher hardness on a surface side (active material side) than a Na negative electrode during the operation of the battery, suppressing the formation of Na dendrites.

Abstract: Disclosed is a lithium secondary battery including a positive electrode including a positive active material; a negative electrode including a negative active material; a separator interposed between the positive and negative electrodes; and an electrolyte, where an alkaline metal powder layer is formed by dispersion coating on a surface of at least one of the positive and negative electrodes and the separator.

Abstract: Electrochemical cells having molten electrodes having an alkali metal provide receipt and delivery of power by transporting atoms of the alkali metal between electrode environments of disparate chemical potentials through an electrochemical pathway comprising a salt of the alkali metal. The chemical potential of the alkali metal is decreased when combined with one or more non-alkali metals, thus producing a voltage between an electrode comprising the molten the alkali metal and the electrode comprising the combined alkali/non-alkali metals.

Abstract: A process for producing a lithium-containing composite oxide having a large volume capacity density, high safety, excellent durability for charge/discharge cycles, and excellent low temperature characteristics. An oxide of general formula LipNxMyOzFa (wherein N is at least one of Co, Mn or Ni, M is at least one of Al, an alkali earth metal element, a transition metal element other than N, 0.9?p?1.2, 0.97?x?1.00, 0?y?0.03, 1.9?z?2.2, x+y=1 and 0?a?0.02) can be produced.

Abstract: The present invention provides a positive electrode active material for a non-aqueous electrolyte-based secondary battery, composed of a lithium/nickel composite oxide with high capacity, low cost and excellent heat stability, and a high safety non-aqueous electrolyte-based secondary battery. A positive electrode active material, comprising lithium/nickel composite oxide powders obtained by water washing fired powders having the following composition formula (1), followed by filtering and drying: LiNi1-aMaO2??(1) (wherein, M represents at least one kind of an element selected from transition metal elements other than Ni, group 2 elements, or group 13 elements; and “a” satisfies 0.01?a?0.5), characterized in that specific surface area of the lithium/nickel composite oxide powders after water washing is 0.3 to 2.0 m2/g.

Abstract: An electrode for a molten salt battery includes a current collector connectable to an electrode terminal of the molten salt battery and an active material. The current collector has an internal space in which small spaces are mutually coupled. The internal space of the current collector is filled with the active material.

Abstract: The application describes glass compositions that includes more than 30 percent by weight of bismuth compounds, in particular bismuth oxide. Additionally, components, specifically battery separators, made from the glass compositions with high levels of bismuth are described.

Abstract: Batteries and methods of making batteries are disclosed. In some embodiments, a method of making a battery can include contacting a manganese oxide with lithium hydroxide and lithium bromide and/or lithium chloride, and incorporating the manganese oxide into a cathode of the battery.

Abstract: An active material for a non-aqueous electrolyte secondary battery including a lithium-containing transition metal oxide containing nickel and manganese and having a closest-packed structure of oxygen, wherein an atomic ratio MLi/MT between the number of moles of lithium MLi and the number of moles of transition metal Mt contained in the lithium-containing transition metal oxide is greater than 1.0; the lithium-containing transition metal oxide has a crystal structure attributed to a hexagonal system, and the X-ray diffraction image of the crystal structure has a peak P003 attributed to the (003) plane and a peak P104 attributed to the (104) plane; an integrated intensity ratio I003/I104 between the peak P003 and the peak P104 varies reversibly within a range from 0.7 to 1.5 in association with absorption and desorption of lithium by the lithium-containing transition metal oxide; and the integrated intensity ratio varies linearly and continuously.

Abstract: A method for manufacturing a cathode active material for a lithium rechargeable battery, including: selecting a first metal compound from a group consisting of a halide, a phosphate, a hydrogen phosphate and a sulfate of Mg or Al; selecting a second metal compound from a group consisting of an oxide, a hydroxide and a carbonate of Mg or Al; combining the first metal compound and the second metal compound to obtain a metal compound, the metal compound containing either Mg or Al atoms; mixing a lithium compound, a transition metal compound and the metal compound to obtain a mixture; and sintering the mixture.

Abstract: Protected anode architectures for active metal anodes have a polymer adhesive seal that provides an hermetic enclosure for the active metal of the protected anode inside an anode compartment. The compartment is substantially impervious to ambient moisture and battery components such as catholyte (electrolyte about the cathode), and prevents volatile components of the protected anode, such as anolyte (electrolyte about the anode), from escaping. The architecture is formed by joining the protected anode to an anode container. The polymer adhesive seals provide an hermetic seal at the joint between a surface of the protected anode and the container.

Abstract: The present invention relates to an Li-ion battery, which comprises: a positive electrode; a negative electrode; and an Li-ion electrolyte contacting with the positive electrode and the negative electrode, wherein the negative electrode has a graphene multi-layered structure, the graphene multi-layered structure comprises plural 2D graphene layers, and plural Ni layers interposed between the 2D graphene layers, and Li-ions completely intercalate or de-intercalate between the graphene layers.

Abstract: Electrochemical energy storage devices having a metal anode and a solid-state, metal-ion exchange membrane and are characterized by an interfacial layer between the anode and the membrane, wherein the interfacial layer is a solid solution comprising the metal anode and a metallic interfacial conducting agent.

Abstract: The present invention includes three-dimensional secondary battery cells comprising an electrolyte, a cathode, an anode, and an auxiliary electrode. The cathode, the anode, and the auxiliary electrode have a surface in contact with the electrolyte. The anode and the cathode are electrolytically coupled. The auxiliary electrode is electrolytically coupled and electrically coupled to at least one of the anode or the cathode. Electrically coupled means directly or indirectly connected in series by wires, traces or other connecting elements. The average distance between the surface of the auxiliary electrode and the surface of the coupled cathode or the coupled anode is between about 1 micron and about 10,000 microns. The average distance means the average of the shortest path for ion transfer from every point on the coupled cathode or anode to the auxiliary electrode.

Abstract: Primary and secondary Li-ion and lithium-metal based electrochemical cell systems. The suppression of gas generation is achieved through the addition of an additive or additives to the electrolyte system of respective cell, or to the cell itself whether it be a liquid, a solid- or plasticized polymer electrolyte system. The gas suppression additives are primarily based on unsaturated hydrocarbons.

Abstract: The present invention has an object of providing a lithium secondary battery and an electrode for a lithium secondary battery having a superb cycle characteristic. The present invention relates to an electrode for a lithium secondary battery, and a lithium secondary battery including the electrode, the electrode including a current collector and an active substance structure provided on the current collector, wherein the active substance structure includes at least one first layer containing a first material for occluding and releasing lithium ions and at least one second layer containing a conductive second material which does not chemically react with lithium; the first layer and the second layer are alternately laminated; and the second layer has a Young's modulus larger than the Young's modulus of the first layer.

Abstract: An electrode composition for a lithium ion battery having the formula SixSnqMyCz where q, x, y, and z represent atomic percent values and (a) (q+x)>2y+z; (b) q?0, (c) z?0; and (d) M is one or more metals selected from manganese, molybdenum, niobium, tungsten, tantalum, iron, copper, titanium, vanadium, chromium, nickel, cobalt, zirconium, yttrium, or a combination thereof. The Si, Sn, M, and C elements are arranged in the form of a multi-phase microstructure comprising: (a) an amorphous phase comprising silicon; (b) a nanocrystalline phase comprising a metal silicide; and (c) a phase comprising silicon carbide phase when z>0; and (d) an amorphous phase comprising Sn when q>0.

Abstract: A mixed positive electrode active material is used. The mixed positive electrode active material is obtained by mixing a layered oxide whose initial charge-discharge efficiency when lithium metal is used for a counter electrode is less than 100% (hereinafter referred to as a first layered oxide) and a layered oxide whose initial charge-discharge efficiency is 100% or more (hereinafter referred to as a second layered oxide). Examples of the first layered oxide include Li1+aMnxCoyNizO2. A sodium oxide such as LiANaBMnXCoYNiZO2 other than a layered compound from which lithium is previously extracted by acid treatment or the like can be used as the second layered oxide whose initial charge-discharge efficiency is 100% or more. A layered oxide obtained by replacing (ion exchange) sodium in the foregoing LiANaBMnXCoYNiZO2 with lithium can be also used as the second layered oxide.

Abstract: To provide a surface modified lithium-containing composite oxide having excellent discharge capacity, volume capacity density, safety, durability for charge and discharge cycles, and high rate property. A surface modified lithium-containing composite oxide, comprising particles of a lithium-containing composite oxide having a predetermined composition and a lithium titanium composite oxide containing lithium, titanium and element Q (wherein Q is at least one element selected from the group consisting of B, Al, Sc, Y and In) contained in the surface layer of the particles, wherein the lithium titanium composite oxide is contained in the surface layer of the particles in a proportion of the total amount of titanium and element Q in the lithium titanium composite oxide contained in the surface layer to the lithium-containing composite oxide particles is from 0.01 to 2 mol %, and the lithium titanium composite oxide has a peak at a diffraction angle 2? within a range of 43.8±0.

Abstract: A high power lithium-ion secondary battery having an increased capacity and capable of maintaining high discharge voltage and repeating charging/discharging high current. A lithium-ion secondary battery having an electrode group formed by laminating or winding a negative electrode layer and a positive electrode layer so as to interpose a separator made of synthetic resin, the negative electrode layer containing a material capable of intercalating/deintercalating lithium-ion, and the positive electrode layer including a lithium-containing metallic oxide; and a non-aqueous electrolyte containing lithium salt, where the electrode group is immersed. The positive electrode material unit contains a fluorinated lithium-containing metallic oxide as a main material, and the separator possesses a hydrophilic group. Further, the positive electrode material preferably contains a main material including LiNixCoyMnzO2, where 0.6?x<1, 0<y?0.2, 0<z?0.2, and x+y+z=1.

Abstract: There is provided a simple and easy method of preparation of a positive electrode active material for a non-aqueous secondary battery which comprises a compound comprising lithium, nickel and manganese and having a layered structure. Said method comprises firing a mixture of (1) at least one member selected from the group consisting of dinickel trioxide and boron compounds and (2) one or more metal compounds comprising lithium, nickel and manganese as their metal elements.