Abstract: An active material for a battery contains a Y2Ti2O5S2 crystalline phase, and has an IB/IA value of 0.3 or smaller and an IC/IA value of 0.15 or smaller, wherein IA, IB and IC are the peak intensity of the Y2Ti2O5S2 crystalline phase at 2?=34.5°, the peak intensity of a Y2T2O7 crystalline phase at 2?35.6°, and the peak intensity of TiS2 at 2?=34.1°, respectively, that are measured by X-ray diffraction using CuK? radiation. The active material is synthesized by preparing a raw material composition containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiS2 to Y2O3 of higher than 1 or containing TiS2, TiO2 and Y2O3 and having a molar ratio of TiO2 to Y2O3 of lower than 1, and heating the raw material composition. A positive or negative-electrode active material layer included in the battery may be contain the active material.

Abstract: Provided is an anode active material including a transition metal-pyrophosphate of Chemical Formula 1 below: M2P2O7??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.

Abstract: Provided is an anode active material including a transition metal-metaphosphate of Chemical Formula 1: M(PO3)2??<Chemical Formula 1> where M is any one selected from the group consisting of titanium (Ti), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), ruthenium (Ru), palladium (Pd), and silver (Ag), or two or more elements thereof. Since the anode active material of the present invention is stable and has excellent conversion reactivity while including only transition metal and phosphate without using lithium in which the price thereof is continuously increased, the anode active material of the present invention may improve capacity characteristics.

Abstract: An electrode for a rechargeable battery and a rechargeable battery, the electrode including a current collector; an electrode active material layer; and an electrolyte solution impregnation layer, wherein the electrolyte solution impregnation layer includes a metal oxide and a conductive material.

Abstract: An electrode active material including an ordered mesoporous metal oxide; and at least one conductive carbon material disposed in a pore of the ordered mesoporous metal oxide. Also, an electrode including the electrode active material, and a lithium battery including the electrode.

Abstract: Nanoporous metal oxide framework compositions useful as anodic materials in a lithium ion battery, the composition comprising metal oxide nanocrystals interconnected in a nanoporous framework and having interconnected channels, wherein the metal in said metal oxide comprises titanium and at least one metal selected from niobium and tantalum, e.g., TiNb2-x TaxOy (wherein x is a value from 0 to 2, and y is a value from 7 to 10) and Ti2Nb10-vTavOw (wherein v is a value from 0 to 2, and w is a value from 27 to 29). A novel sol gel method is also described in which sol gel reactive precursors are combined with a templating agent under sol gel reaction conditions to produce a hybrid precursor, and the precursor calcined to form the anodic composition. The invention is also directed to lithium ion batteries in which the nanoporous framework material is incorporated in an anode of the battery.

Abstract: To provide a cathode active material for a lithium ion secondary battery, which has high packing properties and high volume capacity density, and a method for its production.

Abstract: An electrode active material including a vanadium oxide represented by Formula 1, VOx??Formula 1 wherein vanadium in the vanadium oxide has a mixed oxidation state of a plurality of oxidation numbers, and the oxidation numbers include an oxidation number of +3, and wherein, in Formula 1 above, 1.5<x<2.5.

Abstract: Disclosed is a cathode active material in which lithium cobalt oxide particles and manganese (Mn) or titanium (Ti)-containing lithium transition metal oxide particles co-exist and a method of preparing the same.

Abstract: An electrochemical cell is presented. The electrochemical cell includes an elongated ion-conducting separator defining at least a portion of a first compartment; a positive electrode composition disposed in the first compartment, the positive electrode composition comprising at least one electroactive metal, at least one alkali metal halide, and at least one electrolyte. A positive current collector is further disposed in the first compartment such that a portion of the positive current collector extends into the positive electrode composition, and a primary dimension of the extended portion of the positive current collector is less than about 20% of a primary dimension of the first compartment. A related method for the preparation of an electrochemical cell is also presented.

Abstract: The present invention provides an electrochemical cell comprising an anodic current collector in contact with an anode. A cathodic current collector is in contact with a cathode. A solid electrolyte thin-film separates the anode and the cathode.

Abstract: An electronically active glass has the composition (TxOy)z-(MuOv)w—(Na/LiBO2)t wherein T is a transition metal selected from V and Mo, M is a metal selected from Ni, Co, Na, Al, Mn, Cr, Cu, Fe, Ti and mixtures thereof, x, y, u, and v are the stoichiometric coefficients resulting in a neutral compound, i.e. x=2y/(oxidation state of T) and u=2v/(oxidation state of M), z, w and t are weight-%, wherein z is 70-80, w is 0-20 t is 10-30, and the sum of z, w and t is 100 weight-%, in particular V2O5—LiBO2 and V2O5—NiO—LiBO2.

Abstract: The present invention provides a process for producing a graphene-enhanced anode active material for use in a lithium battery. The process comprises (a) providing a continuous film of a graphene material into a deposition zone; (b) introducing vapor or atoms of a precursor anode active material into the deposition zone, allowing the vapor or atoms to deposit onto a surface of the graphene material film to form a sheet of an anode active material-coated graphene material; and (c) mechanically breaking this sheet into multiple pieces of anode active material-coated graphene; wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight, all based on the total weight of the graphene material and the anode active material combined.

Abstract: The present invention provides an anode electrode of a lithium-ion battery, comprising an anode active material-coated graphene sheet, wherein the graphene sheet has two opposed parallel surfaces and at least 50% area of one of the surfaces is coated with an anode active material and wherein the graphene material is in an amount of from 0.1% to 99.5% by weight and the anode active material is in an amount of at least 0.5% by weight (preferably at least 60%), all based on the total weight of the graphene material and the anode active material combined.

Abstract: The present invention provides a cathode (positive electrode) of a lithium battery and a process for producing this cathode. The electrode comprises a cathode active material-coated graphene sheet and the graphene sheet has two opposed parallel surfaces, wherein at least 50% area (preferably >80%) of one of the two surfaces is coated with a cathode active material coating. The graphene material is in an amount of from 0.1% to 99.5% by weight and the cathode active material is in an amount of at least 0.5% by weight (preferably >80% and more preferably >90%), all based on the total weight of the graphene material and the cathode active material combined. The cathode active material is preferably an inorganic material, an organic or polymeric material, a metal oxide/phosphate/sulfide, or a combination thereof. The invention also provides a lithium battery, including a lithium-ion, lithium-metal, or lithium-sulfur battery.

Abstract: A battery capable of improving the cycle characteristics and the swollenness characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The node has an anode current collector and an anode active material layer provided thereon, and the anode active material layer contains a plurality of anode active material particles having silicon, and a metal material having a metal element not being alloyed with an electrode reactant in a gap between the anode active material particles.

Abstract: According to one embodiment, a negative electrode active material for nonaqueous electrolyte battery includes a titanium oxide compound having a crystal structure of monoclinic titanium dioxide. When a monoclinic titanium dioxide is used as the active material, the effective capacity is significantly lower than the theoretical capacity though the theoretical capacity was about 330 mAh/g. The invention comprises a titanium oxide compound which has a crystal structure of monoclinic titanium dioxide and a (001) plane spacing of 6.22 ? or more in the powder X-ray diffraction method using a Cu—K? radiation source, thereby making an attempt to improve effective capacity.

Abstract: A secondary battery capable of suppressing resistance rise even after repeated charge and discharge is provided. The secondary battery includes a cathode, an anode, and an electrolytic solution. The anode contains titanium-containing lithium composite as an anode active material, and the electrolytic solution contains cyclic disulfonic acid anhydride.

Abstract: In a battery production process, a positive electrode active material having a reaction-suppressing layer that does not easily peel off formed on the surface thereof, and a positive electrode and an all-solid-state battery that use said material are provided. The present invention involves positive electrode active material particles for an all-solid-state battery containing sulfide-based solid electrolyte. The positive electrode active material particles are an aggregate containing two or more particles. The surface of the aggregate is coated with a reaction-suppressing layer for suppressing reactions with the sulfide-based solid electrolyte.

Abstract: Provided is a non-aqueous electrolyte battery excellent in initial static characteristics and continuous charge characteristics. The non-aqueous electrolyte battery includes a pellet-shaped positive electrode, a pellet-shaped negative electrode, a separator interposed between the positive and negative electrodes, and a non-aqueous electrolyte. The positive electrode includes a positive electrode active material, aluminum powder, a conductive agent, and a binder. The positive electrode active material contains vanadium pentoxide. The positive electrode has a porosity of 35.6 to 45.4 vol %. The negative electrode includes a negative electrode active material containing silicon, a conductive agent, and a binder.

Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; a conductive layer formed on the electrode active material layer and comprising a conductive material and a binder; and a first porous supporting layer formed on the conductive layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surfaces thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.

Abstract: A method for manufacturing an active material containing a triclinic LiVOPO4 crystal particle that has a spherical form and an average particle size of 20 to 200 nm. The method includes a step of manufacturing the crystal particle by hydrothermal synthesis.

Abstract: An object is to provide an electrode assembly for an electric storage device, such as a nonaqueous electrolyte cell, and an electric storage device that are capable of preventing increase of a short-circuit current at the time of occurrence of a short-circuit within a cell and have high safety. In order to achieve the object, provided is an electrode assembly for an electric storage device including a positive electrode, a negative electrode and a separator disposed between the positive electrode and the negative electrode, in which at least one of the positive electrode and the negative electrode includes a current collector, an active material layer formed on at least one face of the current collector, and an undercoat layer formed between the current collector and the active material layer and including an organic binder that evaporates and decomposes when heated to a predetermined temperature or more.

Abstract: According to one embodiment, there is provided an active material including monoclinic niobium titanium composite oxide particles and a carbon material layer. The monoclinic niobium titanium composite oxide particles can absorb and release Li ions or Na ions and satisfy Formula (1) below. The carbon material layer covers at least a part of surfaces of the niobium titanium composite oxide particles and satisfies Formula (2) below: 0.5?(?/?)?2??(1) 0?(?/?)?0.

Abstract: A spherical primary particle of a lithium titanium oxide of which average diameter is in the range of about 1 to about 20 ?m, a method of preparing the spherical primary particle of the lithium titanium oxide, and a lithium rechargeable battery including the spherical primary particle of the lithium titanium oxide.

Abstract: A metal suboxide having a specific surface area of greater than or equal to about 1.5 m2/g is prepared by preparing a metal suboxide precursor, and heat-treating the metal suboxide precursor.

Abstract: A nonaqueous electrolyte secondary battery disclosed in the present application includes: a positive electrode capable of absorbing and releasing lithium, containing a positive electrode active material composed of a lithium-containing transition metal oxide having a layered crystalline structure; and a negative electrode capable of absorbing and releasing lithium, containing a negative electrode active material composed of a lithium-containing transition metal oxide obtained by substituting some of Ti element of a lithium-containing titanium oxide having a spinel crystalline structure with one or more element different from Ti, wherein a retention of the negative electrode is set to be greater than a retention of the positive electrode, and an irreversible capacity rate of the negative electrode is set to be greater than an irreversible capacity rate of the positive electrode, whereby a discharge ends by negative electrode limitation.

Abstract: Disclosed are compositions containing a formula of LixTiyV1Bz wherein x, y, and z are real numbers greater than zero. In certain embodiments, x is not greater than 7, and y is not greater than 6, or a combination thereof. The composition may be a microporous aerogel, a mesoporous aerogel, a crystalline structure, or a combination thereof. In certain embodiments, the composition may be an aerogel, and a surface of the aerogel comprises microcrystals, nanocrystals or a combination thereof. The compositions have very low densities. Also disclosed are methods to produce the composition and use of the composition in energy storage devices.

Abstract: The present disclosure provides a sheet-form electrode for a secondary battery, comprising a current collector; an electrode active material layer formed on one surface of the current collector; and a first porous supporting layer formed on the electrode active material layer. The sheet-form electrode for a secondary battery according to the present disclosure has supporting layers on at least one surface thereof to exhibit surprisingly improved flexibility and prevent the release of the electrode active material layer from a current collector even if intense external forces are applied to the electrode, thereby preventing the decrease of battery capacity and improving the cycle life characteristic of the battery.

Abstract: A secondary battery includes a first electrode, a second electrode, an ion transmission member in contact with the first electrode and the second electrode, and a hole transmission member in contact with the first electrode and the second electrode. Suitably, the first electrode contains a composite oxide. The composite oxide contains alkali metal or alkali earth metal. The composite oxide contains a p-type composite oxide as a p-type semiconductor.

Abstract: Disclosed is a Si-based alloy anode material for lithium ion secondary batteries, including an alloy phase with a Si principal phase including Si and a compound phase including two or more elements, which includes a first additional element A selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zr, Nb and Mg and a low-melting second additional element B selected from S, Se, Te, Sn, In, Ga, Pb, Bi, Zn, Al. This compound phase includes (i) a first compound phase including Si and the first additional element A; a second compound phase including the first additional element A and the second additional element B; and one or both of a third compound phase including two or more of the second additional elements B and a single phase of the second additional element B.

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: Solid state energy storage systems and devices are provided. A solid state energy storage devices can include an active layer disposed between conductive electrodes, the active layer having one or more quantum confinement species (QCS), such as quantum dots, quantum particles, quantum wells, nanoparticles, nanostructures, nanowires and nanofibers. The solid state energy storage device can have a charge rate of at least about 500 V/s and an energy storage density of at least about 150 Whr/kg.

Abstract: The invention is directed to an SVO electrochemical cell having high rate capability. The cathode is produced by coating a mixture of an active material, conductive additives, a mixed binder, and an aluminum foil current collector. The mixed binder consists of a mixture of styrene butadiene with PVDF. The use of the styrene butadiene maintains adhesion to the conductive current collector while the PVDF portion of the binder gives flexibility. A particularly preferred couple is of a lithium/silver vanadium oxide (Li/SVO) chemistry and the binder mixture enables an active slurry of SVO to be coated onto a current collector without delamination.

Abstract: The lithium-ion secondary battery in which a positive electrode contains Lia(M)b(PO4)cFd (M=VO or V, 0.9?a?3.3, 0.9?b?2.2, 0.9?c?3.3, 0?d?2.0) as an active material and 1 to 300 ppm of sulfur is used.

Abstract: Synthesis process for new particles of Li4Ti5O12, Li(4-?)Z?Ti5O12 or Li4Z?Ti(5-?)O12, preferably having a spinel structure, wherein ? is greater than 0 and less than or equal to 0.5 (preferably having a spinel structure), ? representing a number greater than zero and less than or equal to 0.33, Z representing a source of at least one metal, preferably chosen from the group made up of Mg, Nb, Al, Zr, Ni, Co. These particles coated with a layer of carbon notably exhibit electrochemical properties that are particularly interesting as components of anodes and/or cathodes in electrochemical generators.

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 (003) face and a (?601) face and having a lattice spacing difference between the (003) face and the (?601) face, i.e., d(003)?d(?601), of not more than 0.0040 nm. The titanic acid compound may be produced by reacting a layered alkali metal titanate, represented by a compositional formula MxM?x/3Ti2?x/3O4 wherein M and M?, which may be the same or different, represent an alkali metal; and x is in the range of 0.50 to 1.0, with an acidic compound and then heating the reaction product at a temperature in the range of 250 to 450° C.

Abstract: A composite particle is provided. The particle comprises a first particle component and a second particle component in which: (a) the first particle component comprises a body portion and a surface portion, the surface portion comprising one or more structural features and one or more voids, whereby the surface portion and body portion define together a structured particle; and (b) the second component comprises a removable filler; characterised in that (i) one or both of the body portion and the surface portion comprise an active material; and (ii) the filler is contained within one or more voids comprised within the surface portion of the first component.

Abstract: A secondary battery capable of obtaining superior battery characteristics is provided. The secondary battery of the present technology includes a cathode, an anode including an active material, and an electrolytic solution. The active material includes a core section and covering section, the core section being capable of inserting and extracting lithium ions, and the covering section being provided in at least part of a surface of the core section and being a low-crystalline or a noncrystalline. The core section includes Si and O as constituent elements, and an atom ratio x (O/Si) of O with respect to Si satisfies O?x<0.5. The covering section includes Si and O as constituent elements, and an atom ratio y (O/Si) of O with respect to Si satisfies 0.5?y?1.8. The covering section has voids, and a carbon-containing material is provided in at least part of the voids.

Abstract: An apparatus comprises: an anode formed of graphene oxide from an acidic pH; a cathode from a pH greater than the acidic pH of the anode; and charge collectors deposited on the anode and the cathode.

Abstract: According to one embodiment, there is provided an electrode material. The electrode material includes an active material which includes a titanium oxide compound having a monoclinic titanium dioxide crystal structure. The electrode material further includes a compound which exists on the surface of the active material and has a trialkylsilyl group represented by the formula (I). wherein R1, R2 and R3, which may be the same or different, respectively represent an alkyl group having 1 to 10 carbon atoms.

Abstract: The present invention relates to a method for manufacturing a cable-type secondary battery comprising an electrode that extends longitudinally in a parallel arrangement and that includes a current collector having a horizontal cross section of a predetermined shape and an active material layer formed on the current collector, and the electrode is formed by putting an electrode slurry including an active material, a polymer binder, and a solvent into an extruder, by extrusion-coating the electrode slurry on the current collector while continuously providing the current collector to the extruder, and by drying the current collector coated with the electrode slurry to form an active material layer.

Abstract: Disclosed are a cathode active material for a lithium secondary battery, and a lithium secondary battery including the same. The disclosed cathode active material includes a core including a compound represented by Formula 1; and a shell including a compound represented by Formula 2, in which the core and the shell have different material compositions.

Abstract: In a method for manufacturing of thermochromic material, a target increased luminous transmittance level for the thermochromic material is determined (210). The luminous transmittance level is defined within a predetermined wavelength region. Preferably, this predetermined wavelength region at least partly comprises visible light. A concentration level of a first dopant element is determined (212) for generating the luminous transmittance level of the thermochromic material. The first dopant element is capable of forming an oxide having a high bandgap in its electronic structure, and in a specific embodiment is Al and/or Mg. A VO2-based thermochromic material is doped (214) with the determined concentration level of the first dopant element. At least one second dopant may also be employed.

Abstract: A method for configuring a non-lithium-intercalation electrode includes intercalating an insertion species between multiple layers of a stacked or layered electrode material. The method forms an electrode architecture with increased interlayer spacing for non-lithium metal ion migration. A laminate electrode material is constructed such that pillaring agents are intercalated between multiple layers of the stacked electrode material and installed in a battery.

Abstract: An object of the present invention is to provide an electrode for a lithium ion secondary battery that can ensure a high level of safety even when exposed to severe conditions such as a nail penetration test or crush test, and exhibit excellent output characteristics. The present invention relates to an electrode for a lithium ion secondary battery having a material mixture containing active material particles capable of reversibly absorbing and desorbing lithium, and a current collector that carries the material mixture, wherein a surface of the current collector has recessed portions, and an area occupied by the recessed portions accounts for not less than 30% of an a material mixture carrying area of the current collector.

Abstract: A ceramic material that can exhibit sufficient compactness and lithium (Li) conductivity to enable the use thereof as a solid electrolyte material for a lithium secondary battery and the like is provided. The ceramic material contains aluminum (Al) and has a garnet-type crystal structure or a garnet-like crystal structure containing lithium (Li), lanthanum (La), zirconium (Zr) and oxygen (O).

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: Disclosed is a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same, and the positive active material includes a carbon material having a structure with “n” polycyclic nano sheets, wherein “n” is an integer of 1 to 30 with hexagonal rings having six carbon atoms condensed and substantially aligned in a plane, the polycyclic nano sheets are laminated in a vertical direction to the plane; and a lithium-containing olivine-based compound attached to the surface of the carbon material is formed with a carbon-coating layer on its surface.

Abstract: The present disclosure relates to an anode active material comprising a composite of a core-shell structure, a lithium secondary battery comprising the same, and a method of manufacturing the anode active material. According to an aspect of the present disclosure, there is provided an anode active material of a core-shell structure comprising a core including alloyed (quasi)metal oxide-Li (MOx—Liy) and a shell including a carbon material coated on a surface of the core. According to another aspect of the present disclosure, there is provided a method of manufacturing the anode active material of the core-shell structure. According to an aspect of the present disclosure, an anode active material with high capacity, excellent cycle characteristics and volume expansion control capacity, and high initial efficiency is provided.