Abstract: According to one embodiment, an active material containing a niobium titanium composite oxide is provided. The niobium titanium composite oxide has average composition represented by LiyNb2+xTi1?xO7+0.5x (0?x?0.5, 0?y?5.5). The niobium titanium composite oxide satisfies peak intensity ratios represented by the following formulae (1) to (3): 0.05?(B/A)?0.7??(1) 0.01?(C/A)?0.2??(2) 0?(D/A)?0.

Abstract: A lithium ion secondary battery according to the present invention uses a cathode material obtained by mixing a first cathode active substance represented by a compositional formula: Lix1Nia1Mnb1COc1O2 (in which 0.2?x1?1.2, 0.6?a1?0.9, 0.05?b1?0.3, 0.05?c1?0.3, and a1+b1+c1=1.0); and a second cathode active substance represented by a compositional formula: Lix2Nia2Mnb2COc2MdO2 (in which 0.2?x2?1.2, 0.7?a2?0.9, 0.05?b2?0.3, 0.05?c2?0.3, M=Mo, W, 0?d?0.06, and a2+b2+c2+d=1.0).

Abstract: According to one embodiment, a non-aqueous electrolyte secondary battery includes a positive electrode which inserts and extracts lithium, a negative electrode containing a negative electrode material including a porous conductive particle and an active material formed on the surface and/or within the pores of the porous conductive particle and composed of a lithium titanium complex oxide having at least one structure selected from the group consisting of nanotubes and nanowires, the lithium titanium complex oxide being expressed by a general formula LixTiO2 (where 0?x<1), and a non-aqueous electrolyte.

Abstract: A lithium ion battery containing conducting materials comprises a positive electrode, a negative electrode, a separator, an electrolyte, adhesives and sealing materials. The conducting materials in the positive electrode comprise metal carbides, metal borides or metal nitrides. The conducting materials in the negative electrode comprise metal carbides, metal borides or metal nitrides. The metal carbide is titanium carbonitride, tungsten carbide or titanium carbide, vanadium carbide, tantalum carbide, and eutectic of tungsten carbide and titanium carbide. The metal boride is molybdenum boride, tungsten boride or vanadium boride. The metal nitride is titanium nitride, tungsten nitride or tantalum nitride. The conducting materials in the positive electrode may also comprise powdered metals. The conducting materials in the negative electrode comprise powdered metals. The powdered metal is nickel powder, copper powder or chromium powder.

Abstract: An electrode material for a secondary battery includes crystal primary particles of an electrode active material which releases or absorbs cations of a monovalent or divalent metal when subjected to electrochemical oxidation or reduction and which has a crystal lattice in which the cations can move only in a one-dimensional movable direction during the process of oxidation or reduction. The electrode material also includes an ion-conductive substance and conductive carbon which coexist on the surface of the primary particles, in which the ion-conductive substance has a property which allows two or three-dimensional movement of the cations, and the cations are movable via a layer in which the ion-conductive substance and the conductive carbon coexist.

Abstract: To provide a cathode active material for a lithium ion secondary battery, and its production process. A lithium-containing composite oxide containing a transition metal element and a composition (1) are contacted to obtain particles (I) having a compound containing a metal element (M) attached, which are mixed with a compound which generates HF by heating, and the mixture is heated to obtain particles (III) having a covering layer (II) containing the metal element (M) and fluorine element formed on the surface of the lithium-containing composite oxide. Composition (1): a composition having a compound containing no Li element and containing at least one metal element (M) selected from Mg, Ca, Sr, Ba, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ni, Pb, Cu, Zn, Al, In, Sn, Sb, Bi, La, Ce, Pr, Nd, Gd, Dy, Er and Yb dissolved or dispersed in a solvent.

Abstract: A lithium cobalt oxide powder for use as an active positive electrode material in lithium-ion batteries, the lithium cobalt oxide powder having a Ti content of between 0.1 and 0.25 mol %, and the lithium cobalt oxide powder having a density PD in g/cm3 dependent on the powder particle size expressed by the D50 value in ?m, wherein PD?3.63+[0.0153*(D50?17)].

Abstract: A positive electrode for a rechargeable lithium battery includes a first positive active material represented by LiaNibCocMdO2, and a second positive active material represented by LieNifCogMnhO2. M is selected from Al, B, Cr, Fe, Mg, Sr, and V, 0.95?a?1.1, 0.5?b?0.9, 0?c?0.3, 0?d?0.1, 0.95?e?1.1, 0.33?f?0.5, 0.15?g?0.33, and 0.3?h?0.35. A rechargeable lithium battery includes the positive electrode, a negative electrode and an electrolyte.

Abstract: A positive active material including: a lithium-containing oxide, and a lithium-intercalatable phosphate compound disposed on the lithium-containing oxide.

Abstract: The battery includes a solid electrolyte activating a positive electrode and a negative electrode. The electrolyte is a solid including a lithium ion conductive glass-ceramic. The negative electrode includes a buffer layer between a negative medium and the electrolyte. The negative medium includes one or more primary negative active materials. The buffer layer includes one or more secondary negative active materials that do not dissolve the lithium ion conductive glass-ceramic. The secondary negative active materials can have a redox potential greater than 0.5 V vs Li/Li+.

Abstract: Compositions and methods of making are provided for treated mesoporous metal oxide microspheres electrodes. The compositions comprise (a) microspheres with an average diameter between 200 nanometers (nm) and 10 micrometers (?m); (b) mesopores on the surface and interior of the microspheres, wherein the mesopores have an average diameter between 1 nm and 50 nm and the microspheres have a surface area between 50 m2/g and 500 m2/g, and wherein the composition has an electrical conductivity of at least 1×10?7 S/cm at 25° C. and 60 MPa. The methods of making comprise forming a mesoporous metal oxide microsphere composition and treating the mesoporous metal oxide microspheres by at least one method selected from the group consisting of: (i) annealing in a reducing atmosphere, (ii) doping with an aliovalent element, and (iii) coating with a coating composition.

Abstract: Disclosed are a positive active material layer composition for a rechargeable lithium battery including a positive active material including a lithium metal oxide and tungsten oxide (WO3) coated on the surface of the lithium metal oxide and an aqueous binder, and a rechargeable lithium battery using the same.

Abstract: According to one embodiment, there is provided an active material for a battery. The active material comprises a monoclinic ?-type titanium composite oxide which contains fluorine.

Abstract: A nonaqueous secondary battery having a positive electrode having a positive electrode mixture layer, a negative electrode, and a nonaqueous electrolyte, in which the positive electrode contains, as an active material, a lithium-containing transition metal oxide containing a metal element selected from the group consisting of Mg, Ti, Zr, Ge, Nb, Al and Sn, the positive electrode mixture layer has a density of 3.5 g/cm3 or larger, and the nonaqueous electrolyte contains a compound having two or more nitrile groups in the molecule.

Abstract: Carbon nanotube-based electrode materials for rechargeable batteries have a vastly increased power density and charging rate compared to conventional lithium ion batteries. The electrodes are based on a carbon nanotube scaffold that is coated with a thin layer of electrochemically active material in the form of nanoparticles. Alternating layers of carbon nanotubes and electrochemically active nanoparticles further increases the power density of the batteries. Rechargeable batteries made with the electrodes have a 100 to 10000 times increased power density compared to conventional lithium-ion rechargeable batteries and a charging rate increased by up to 100 times.

Abstract: An object of the present invention is to provide a negative-electrode active material for lithium-ion secondary battery, negative-electrode active material which makes it possible for lithium-ion secondary batteries to exhibit higher capacities, and which makes it feasible to charge and discharge lithium-ion secondary batteries at a faster speed. In a production process according to the present invention, oxidized titanium fluoride is obtained by heating a mixed raw material, which includes a mixture of anatase-type TiO2 and hydrofluoric acid, at 70° C. or more (i.e., a heating step). This mixed raw material includes hydrogen fluoride in an amount exceeding 2 mol per the anatase-type TiO2 making 1 mol. When the oxidized titanium fluoride, which is obtained by this production process, is used as a negative-electrode active material of lithium-ion secondary battery, high-capacity and rapidly-chargeable/dischargeable lithium-ion secondary batteries are obtainable.

Abstract: A rechargeable lithium battery including: a negative electrode including lithium-vanadium-based oxide, negative active material; a positive electrode including a positive active material to intercalate and deintercalate lithium ions; and an electrolyte including a non-aqueous organic solvent, and a lithium salt. The lithium salt includes 0.7 to 1.2M of a first lithium salt including LiPF6; and 0.3 to 0.8M of a second lithium salt selected from the group consisting of LiBC2O4F2, LiB(C2O4)2, LiN(SO2C2F5)2, LiN(SO2CF3)2, LiBF4, LiClO4, and combinations thereof.

Abstract: Provided is an electric storage battery including a jelly roll type electrode assembly having a mandrel. The mandrel includes a positive portion, a negative portion and a removable portion. In some embodiments, the mandrel is planar having two faces with a groove on each of the positive and negative portions. The grooves can be on the same or different faces of the mandrel. The grooves are dimensioned to accommodate a positive and negative feedthrough pin. The electrodes are wrapped around the mandrel using the removable portion to wind the mandrel. Once wrapped, the removable portion can be detached. The positive portion and the negative portion are left in the electrode assembly insulated from each other. The mandrel allows tighter wrapping of the jelly roll assembly, increasing battery miniaturization and also results in electrode assemblies in which after-placement of tabs does not result in burrs or shorting.

Abstract: A process to induce polymerization of an organic electronically conductive polymer in the presence of a partially delithiated alkali metal phosphate which acts as the polymerization initiator.

Abstract: The problem of the present invention is to provide a coated active material having a soft coating layer and capable of improving a contact area. The present invention solves the above-mentioned problem by providing a coated active material comprising a cathode active material and a coating layer for coating the above-mentioned cathode active material, containing an Li ion conductive oxide, wherein the above-mentioned coating layer further contains lithium carbonate.

Abstract: A composite anode active material, an anode including the composite anode active material, a lithium battery including the anode, and a method of preparing the composite anode active material. The composite anode active material includes: a shell including a hollow carbon fiber; and a core disposed in a hollow of the hollow carbon fiber, wherein the core includes a first metal nanostructure and a conducting agent.

Abstract: A cathode composite material includes a cathode active material and a coating layer coated on a surface of the cathode active material. A material of the coating layer is a lithium metal oxide having a crystal structure belonging to C2/c space group of the monoclinic crystal system. The present disclosure also relates to a lithium ion battery including the cathode composite material.

Abstract: The electrochemical device includes a composite electrode. The composite electrode has a working electrode that includes a current collector. A reference electrode is immobilized on the current collector. The reference electrode includes a reference active medium on a reference current collector. The reference current collector is electrically insulated from the current collector. A top surface of the reference electrode is substantially flush with a top surface of the working electrode. The top surface of the reference electrode is a surface of the reference electrode that is substantially parallel to the reference current collector.

Abstract: In an aspect, a composite anode active material including particles, wherein the particles include: a first carbonaceous material that is substantially crystalline and includes at least one carbon nano-sheet; a non-carbonaceous material capable of intercalating and deintercalating lithium; and a second carbonaceous material that binds the first carbonaceous material and the non-carbonaceous material, wherein the particles have pores having a size of 50 nm or more is disclosed.

Abstract: A non-aqueous electrolyte secondary battery including a unit cell including a positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a non-aqueous electrolyte, the positive electrode capacity being greater than the negative electrode capacity, and at least a portion of the non-aqueous electrolyte is gasified during charging.

Abstract: An electrode composition containing a first conducting agent and a second conducting agent, an electrode for lithium secondary batteries, a method of manufacturing the electrode, and a lithium secondary battery including the electrode. The second conducting agent is an agglomerate formed of a conducting material and a fluorine-based polymer.

Abstract: The positive electrode of the lithium ion secondary battery includes active material particles containing a lithium composite oxide represented by: LivNi1-w-x-y-zCowCaxMgyMzO2 (0.85?v?1.25, 0<w?0.75, 0<x?0.1, 0<y?0.1, 0?z?0.75, 0<w+x+y+z?0.80, and element M is an element other than Co, Ca, and Mg), and (i) when 0<z, element M includes element Me of at least one selected from the group consisting of Mn, Al, B, W, Nb, Ta, In, Mo, Sn, Ti, Zr, and Y; and element Mc of at least one selected from the group consisting of Ca, Mg, and element Me is distributed more in the surface layer portion compared with the inner portion of the active material particles, and (ii) when 0=z, element Mc of at least one selected from the group consisting of Ca and Mg is distributed more in the surface layer portion compared with the inner portion of the active material particles.

Abstract: A negative electrode plate for a nonaqueous electrolyte secondary battery, which includes a collector, and an electrode active material layer that is arranged on the collector. The electrode active material layer contains a negative electrode active material, and a metal oxide or an elemental metal. The negative electrode active material is firmly affixed onto the collector by the metal oxide or elemental metal.

Abstract: According to one embodiment, an active material for batteries includes monoclinic ?-type titanium composite oxide having a crystallite, wherein the monoclinic ?-type titanium composite oxide has a first diameter of the crystallite calculated from a peak present at an angle 2? of 48 to 49° and a second diameter of the crystallite calculated from a peak present at an angle 2? of 24 to 26°, by the wide-angle X-ray diffraction method using an X-ray source CuK? ray, the first diameter of the crystallite is defined as X and the second diameter of the crystallite is defined as Y, X is larger than Y.

Abstract: A composite cathode active material, a cathode including the same, a lithium battery including the cathode, and preparation method thereof are disclosed. The composite cathode active material includes: a core capable of intercalating and deintercalating lithium; and a crystalline coating layer disposed on at least part of a surface of the core, wherein the coating layer include a metal oxide.

Abstract: A method is provided for mitigating hydrogen evolution within a flow battery system that includes a plurality of flow battery cells, a power converter and an electrochemical cell. The method includes providing hydrogen generated by the hydrogen evolution within the flow battery system to the electrochemical cell. A first electrical current generated by an electrochemical reaction between the hydrogen and a reactant is sensed, and the sensed current is used to control an exchange of electrical power between the flow battery cells and the power converter.

Abstract: As a positive electrode active material, a material which is represented by the general formula Li(2-x)M1yM2zSiO4 and satisfies the conditions (I) to (IV) is used: (I) x is a value which changes due to insertion and extraction of a lithium ion during charging and discharging, and satisfies 0?x<2; (II) M1 is one or more transition metal atoms selected from iron (Fe), nickel (Ni), manganese (Mn), and cobalt (Co); (III) M2 is a metal atom that is titanium (Ti), scandium (Sc), or magnesium (Mg); and (IV) The formulae y+z=1, 0<y<1, and 0<z<1 are satisfied. The value of z/(y+z) is greater than or equal to 0.01 and less than or equal to 0.2.

Abstract: Silver positive electrode for alkali secondary batteries having an enhanced cycling capability, and consequently a longer lifetime in cycling of the storage batteries incorporating it, by optimizing, in recharge mode, the conditions for electrochemically reducing the oxidized silver species. The silver electrode according to the invention is of the plasticized type, and a high-porosity collector, such as a woven fabric, a felt or a reticulated cellular metal foam, is used. The active compound introduced into the collector is prepared in paste form, in which the active material consists of metallic silver particles and/or silver monoxide particles, and may advantageously include a metal oxide acting as pore-forming and wetting agent for the electrode. Such an electrode is particularly intended for mounting in silver-zinc storage batteries operating in open mode or sealed mode.

Abstract: A secondary-battery current collector comprising an aluminum foil and a film containing an ion-permeable compound and carbon fine particles formed thereon or a secondary-battery current collector comprising an aluminum foil, a film containing an ion-permeable compound and carbon fine particles formed thereon as the lower layer, and a film containing a binder, carbon fine particles and a cathodic electroactive material formed thereon as the upper layer, a production method of the same, and a secondary battery having the current collector are provided.

Abstract: A lithium secondary battery (10) provided by the present invention has an iron oxide film-coated electrode employing a configuration in which an iron oxide film (144) capable of reversibly absorbing and desorbing lithium is retained on an electrically conductive base (142). The electrically conductive base (142) has a roughened surface having a surface roughness Rz of 3 ?m or more, and the iron oxide film (144) is provided on the roughened surface.

Abstract: Lithium ion battery positive electrode material are described that comprise an active composition comprising lithium metal oxide coated with an inorganic coating composition wherein the coating composition comprises a metal chloride, metal bromide, metal iodide, or combinations thereof. Desirable performance is observed for these coated materials. In particular, the non-fluoride metal halide coatings are useful for stabilizing lithium rich metal oxides.

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: An anode includes a plurality of metal fibers with a three-dimensional (3D) network structure, and a silicon-containing layer having a thickness of about 0.3 ?m or less formed on a surface of and inside the 3D network structure of the plurality of metal fibers.

Abstract: A negative electrode for a rechargeable lithium battery includes an active material layer including a non-carbon-based negative active material, and a first binder having high-strength; a conductive layer including a conductive material and a second binder; and a current collector. The conductive layer is interposed between the active material layer and the current collector.

Abstract: A silicon-based negative active material that includes a core including silicon oxide represented by SiOx (0<x<2); and a coating layer including metal oxide, and the metal of the metal oxide includes aluminum (Al), titanium (Ti), cobalt (Co), magnesium (Mg), calcium (Ca), potassium (K), sodium (Na), boron (B), strontium (Sr), barium (Ba), manganese (Mn), nickel (Ni), vanadium (V), iron (Fe), copper (Cu), phosphorus (P), scandium (Sc), zirconium (Zr), niobium (Nb), chromium (Cr), and/or molybdenum (Mo), the core has a concentration gradient where an atom % concentration of a silicon (Si) element decreases to the center of the core, and an atom % concentration of an oxygen (O) element increases to the center, and a depth from the surface contacting the coating layer where a concentration of the silicon (Si) element is about 55 atom % corresponds to about 2% to about 20% of a diameter of the core.

Abstract: The present invention relates to an anode active material for a lithium secondary battery, comprising a carbon material, and a coating layer formed on the surface of particles of the carbon material and having a plurality of Sn-based domains having an average diameter of 1 ?m or less. The inventive anode active material having a Sn-based domains coating layer on the surface of a carbon material can surprisingly prevent stress due to volume expansion which generates by an alloy of Sn and lithium. Also, the inventive method for preparing an anode active material can easily control the thickness of the coating layer.

Abstract: In an aspect, a negative active material for a rechargeable lithium battery that includes a silicon-based active material including a core including carbon and SiOx particles (0.5?x?1.5); and a coating layer surrounding the core, and a negative electrode and a rechargeable lithium battery including the same are provided.

Abstract: A composite anode active material, an anode and a lithium battery each including the composite anode active material, and a method of preparing the composite anode active material. The composite anode active material includes a composite core, and a coating layer covering at least a region of the composite core, wherein the composite core includes a carbonaceous substrate and a metal/semi-metal nanostructure on the carbonaceous substrate, the coating layer is more predominant on the nanostructure than on the carbonaceous substrate, and the coating layer includes a metal oxide.

Abstract: This invention provides a titanic acid compound-type electrode active material having a high battery capacity and, at the same time, having excellent cycle characteristics. The titanic acid compound exhibits an X-ray diffraction pattern corresponding to a bronze-type titanium dioxide except for a peak for a (200) plane and having a peak intensity ratio between the (001) plane and the (200) plane, i.e., I(200)/I(001), of not more than 0.2. The titanic acid compound may be produced by heat dehydrating H2Ti3O7 at a temperature in the range of 200 to 330° C., by heat dehydrating H2Ti4O9 at a temperature in the range of 250 to 650° C., or by heat dehydrating H2Ti5O11 at a temperature in the range of 200 to 600° C.

Abstract: In an aspect, a composite anode active material including a composite core; and a coating layer covering at least a region of the composite core, wherein the composite core comprises a carbonaceous substrate; and a nanostructure disposed on the substrate, and the coating layer includes a metal oxide; an anode and a lithium battery each including the composite anode active material; and a method of preparing the composite anode active material are provided.

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: A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, and a cathode including the cathode active material.

Abstract: The disclosure relates a niobium oxide useful in anodes of secondary lithium ion batteries. Such niobium oxide has formula LixM1?yNbyNb2O7, wherein 0?x?3, 0?y?1, and M represents Ti or Zr. The niobium oxide may be in the form of particles, which may be carbon coated. The disclosure also relates to an electrode composition containing at least one or more niobium oxides of formula LixM1?yNbyNb2O7. The disclosure further relates to electrodes, such as anodes, and batteries containing at least one or more niobium oxides of formula LixM1?yNbyNb2O7. Furthermore, the disclosure relates to methods of forming the above.

Abstract: According to one embodiment, an active material for batteries includes a titanium composite oxide, wherein the titanium composite oxide includes a monoclinic ?-type titanium composite oxide as a main phase, and when an integral intensity of the main peak of the monoclinic ?-type titanium composite oxide obtained with a wideangle X-ray diffraction method having a CuK?-ray as an X-ray source is 100, the relative value of the integral intensity of the main peak that presents the range of 2?=25.1 to 25.5° attributed to at least one sub-phase selected from anatase-type TiO2 and H2Ti8O17 is 30 or less, and the titanium composite oxide has a crystallite diameter of 5 nm or more as calculated from the main peak of the monoclinic ?-type titanium composite oxide obtained with the wideangle X-ray diffraction method.

Abstract: An all-solid-state battery has a mixed electrode layer in which a positive electrode active material and a negative electrode active material are present in a dispersed state. A solid electrolyte section that contains at least one element that makes up the positive electrode active material and at least one element that makes up the negative electrode active material is formed at an interface between the positive electrode active material and the negative electrode active material. The solid electrolyte section is not formed at interfaces between the positive electrode active material portions and at interfaces between the negative electrode active material portions. The positive electrode active material and the negative electrode active material are in the form of predetermined combinations.