Abstract: The present invention relates to a negative electrode active material for a rechargeable lithium battery, a method for preparing the same, and a rechargeable lithium battery using the same, and provides a negative electrode active material for a rechargeable lithium battery of a carbon-metal complex or a mixture type, containing a carbon-based active material including a first ceramic coating layer, a metal-based active material or a metal-base active material including a first ceramic coating layer, and a carbon-based active material.

Abstract: The invention is directed towards a cathode active segment for an electrochemical cell. The cathode active segment includes at least one cathode active material, a cross-sectional width including a first curvilinear surface, a second curvilinear surface, a longitudinal length, and at least one cathode mating surface. The at least one cathode mating surface extends along the longitudinal length of the cathode active segment.

Abstract: A cathode active material, a preparation method thereof, and a cathode for a lithium secondary battery and a lithium secondary battery including the cathode active material, wherein the cathode active material includes a core active material represented by Formula 1 below; and a coating layer formed on a surface of the core active material, the coating layer including lithium gallium oxide: Lia(A1-x-yBxCy)O2 ??Formula 1 In Formula 1, a, x, y, A, B, and C are defined in the detailed description.

Abstract: Provided is a non-aqueous electrolyte secondary battery excellent in durability, the non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, wherein a change in volume of the positive electrode active material during charge and discharge is reduced to prevent deterioration of the film with which the surface of the positive electrode active material is coated. In a non-aqueous electrolyte secondary battery including a positive electrode active material, the surface of which is coated with a film formed of an inorganic solid electrolyte, the positive electrode active material is a lithium-containing composite oxide having a spinel structure, and contains at least one of Ti and Mg as an additional element.

Abstract: The invention relates to Chevrel-phase materials and methods of preparing these materials utilizing a precursor approach. The Chevrel-phase materials are useful in assembling electrodes, e.g., cathodes, for use in electrochemical cells, such as rechargeable batteries. The Chevrel-phase materials have a general formula of Mo6Z8 and the precursors have a general formula of MxMo6Z8. The cathode containing the Chevrel-phase material in accordance with the invention can be combined with a magnesium-containing anode and an electrolyte.

Abstract: A method of preparing a positive active material for a lithium secondary battery represented by the following Chemical Formula 1 (LiwNixCoyMn1-x-y-zMzO2) includes: (a) preparing a metal salt aqueous solution including a lithium raw material, a manganese raw material, a nickel raw material, and a cobalt raw material; (b) wet-pulverizing the metal salt aqueous solution using beads having a particle diameter of 0.05 to 0.30 mm at 2000 to 6000 rpm for 2 to 12 hours to prepare a slurry; (c) adding a carbon source to the slurry; (d) spray-drying the slurry of the step (c) to prepare a mixed powder; and (e) heat-treating the mixed powder.

Abstract: Disclosed is an electrode for secondary batteries including an electrode mixture including an electrode active material, binder and conductive material coated on a current collector wherein a conductive material is coated to a thickness of 1 to 80 ?m on the current collector and the electrode mixture is coated on a coating layer of the conductive material so as to improve electrical conductivity.

Abstract: Novel intermetallic materials are provided that are composed of tin and one or more additional metal(s) having a formula M(1-x)-Sn5, where ?0.1?x?0.5, with 0.01?x?0.4 being more preferred and the second metallic element (M) is selected from iron (Fe), copper (Cu), cobalt(Co), nickel (Ni), and a combination of two or more of those metals. Due to low concentration of the second metallic element, the intermetallic compound affords an enhanced capacity applicable for electrochemical cells and may serve as an intermediate phase between Sn and MSn2. A method of synthesizing these intermetallic materials is also disclosed.

Abstract: Disclosed is a method of manufacturing an electrode for a secondary battery including an electrode mixture including an electrode active material, binder and conductive material coated on a current collector. Provided are a method including surface-treating the current collector such that an aluminum oxide (Al2O3) layer of 40 nm or less is formed on the current collector so as to enhance adhesion between the electrode mixture and the current collector, and an electrode for a secondary battery manufactured using the same.

Abstract: Disclosed is a lithium secondary battery including an electrode assembly including a cathode, an anode, and a separator disposed between the cathode and the anode and an electrolyte, wherein the anode includes a lithium titanium oxide (LTO) as an anode active material, and the lithium secondary battery has a charge cut-off voltage of 3.3 to 4 V and, when the charge cut-off voltage is reached, the anode has a potential of 0.75 to 1.545 V within a range within which a potential of the cathode does not exceed 4.95 V.

Abstract: A composite cathode active material, a method of preparing the composite cathode active material, a cathode including the composite cathode active material, and a lithium battery including the cathode. The composite cathode active material includes a lithium intercalatable material; and a garnet oxide, wherein an amount of the garnet oxide is about 1.9 wt % or less, based on a total weight of the composite cathode active material.

Abstract: Disclosed is a lithium secondary battery including: an electrode assembly including a cathode including a cathode mixture layer formed on a cathode current collector, an anode including an anode mixture layer formed on an anode current collector, and a separator disposed between the cathode and the anode; and an electrolyte, wherein the anode includes lithium titanium oxide (LTO) as an anode active material, and four planes of the cathode mixture layer have the same or greater length than four planes of the anode mixture layer and thus the cathode mixture layer has the same or greater area than the anode mixture layer.

Abstract: A secondary battery includes a cathode, an anode, and a non-aqueous electrolytic solution. The cathode includes a cathode current collector, and a cathode active material layer provided on the cathode current collector. The cathode active material layer is configured of a single layer and includes a plurality of cathode active material particles. When the cathode active material layer is divided, at one or more arbitrary positions, into two or more layers, an average particle size of the cathode active material particles in an uppermost layer is smaller than an average particle size of the cathode active material particles in a lowermost layer in the two or more layers of the divided cathode active material layer.

Abstract: A secondary battery includes: a negative electrode; a positive electrode containing a p-type semiconductor material; and an isolation layer configured to isolate the negative electrode from the positive electrode and including a hole transmission member. The isolation layer is layered by being applied to at least one of the negative electrode and the positive electrode. Preferably, the hole transmission member contains ?-alumina. Preferably, the isolation layer includes the same binding agent as the negative electrode or the positive electrode.

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: A lithium secondary battery of the present invention may simultaneously improve high output and high capacity characteristics by including a first active material layer having high output characteristics and a second active material layer having high capacity characteristics respectively on a cathode collector and an anode collector.

Abstract: A composite anode active material includes a composite of a carbon-based anode active material, a metal-based anode active material and polymer particles. By increasing the conductivity of the composite anode active material, a lithium battery having a large capacity, high initial efficiency, high rate capability and improved cycle life performance can be obtained. An anode includes the composite anode active material and a lithium battery includes the anode.

Abstract: Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention relates to a precursor including a sheet-shaped plate having a thickness of about 1 nm to about 30 nm and that is represented by the following Chemical Formula 1. NixCOyMn1-x-y-zMz(OH)2??[Chemical Formula 1] In the above Chemical Formula 1, 0<x<1, 0?y<1, 0.5?1?x?y?z, and 0?z<1, and M is at least one kind of metal selected from the group consisting of Al, Mg, Fe, Cu, Zn, Cr, Ag, Ca, Na, K, In, Ga, Ge, V, Mo, Nb, Si, Ti, and Zr.

Abstract: The present invention relates to an anode active material with whole particle concentration gradient for a lithium secondary battery, a method for preparing same, and a lithium secondary battery having same, and more specifically, to a composite anode active material, a method for manufacturing same, and a lithium secondary battery having same, the composite anode active material having excellent lifetime characteristics and charge/discharge characteristics through the stabilization of crystal structure as the concentration of a metal comprising the anode active material shows concentration gradient in the whole particle, and having thermostability even in high temperatures.

Abstract: The invention relates to a process for preparing a core-shell structured lithiated manganese oxide, comprising the steps of providing spinel LiMxMn2-xO4 particles, where M is one or more metal ions selected from the group consisting of Li, Mg, Cr, Al, Co, Ni, Zn, Cu, and La, and 0?x<1, as core particles, and subjecting the spinel particles to a heat-treatment with a reactive chemical reagent in the form of liquid or gas to form a shell layer on the surface of the core particles, and to the prepared core-shell structured lithiated manganese oxide, and its use as a cathode material for a lithium ion battery

Abstract: Provided is a composite cathode active material including layered lithium manganese oxide and lithium-containing metal oxide. Also, the present invention provides a secondary battery, a battery module, and a battery pack which have improved power characteristics by including the composite cathode active material.

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: Disclosed are a method of manufacturing an electrode for secondary batteries that includes surface-treating a current collector so as to have a morphology wherein a surface roughness Ra of 0.001 ?m to 10 ?m is formed over the entire surface thereof to enhance adhesion between an electrode active material and the current collector and an electrode for secondary batteries that is manufactured using the method.

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: 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: The present invention is to provide a lithium titanate (LTO) material for a lithium ion battery. The LTO material has hierarchical micro/nano architecture, and comprises a plurality of micron-sized secondary LTO spheres, and a plurality of pores incorporated with metal formed by a metal dopant. Each of the micron-sized secondary LTO spheres comprises a plurality of nano-sized primary LTO particles. A plurality of the nano-sized primary LTO particles is encapsulated by a non-metal layer formed by a non-metal dopant. The LTO material of the present invention has high electrical conductivity for increasing the capacity at high charging/discharging rates, and energy storage capacity.

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: 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 electrode material includes Fe-containing olivine-structured LixAyDzPO4 (wherein A represents one or more elements selected from the group consisting of Co, Mn, Ni, Cu, and Cr; D represents one or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements; 0<x?2; 0<y?1; and 0?z?1.5) particles that are coated with a carbon coating film, in which an abundance of Fe is 0.01 to 0.1 mol with respect to 1 mol of LixAyDzPO4, and an abundance ratio (Fe/(Fe+A+D)) of Fe on surfaces of the LixAyDzPO4 particles is 0.02 to 0.25.

Abstract: An anode and battery including the anode capable of improving the cycle characteristics while securing the input and output characteristics is provided. The battery includes a cathode, an anode, and an electrolytic solution. The anode includes an anode active material layer on an anode current collector, wherein the anode active material layer includes an anode active material capable of intercalating and deintercalating an electrode reactant, wherein a thickness of the anode active material layer ranges from 60 ?m to 120 ?m, and wherein the anode active material includes a carbon material and at least part of a surface is covered by a covering, the covering including at least one of an alkali metal salt and an alkali earth metal salt.

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 disclosure is related to battery systems. More specifically, embodiments of the disclosure provide a nanostructured conversion material for use as the active material in battery cathodes. In an implementation, a nanostructured conversion material is a glassy material and includes a metal material, one or more oxidizing species, and a reducing cation species mixed at a scale of less than 1 nm. The glassy conversion material is substantially homogeneous within a volume of 1000 nm3.

Abstract: An electrochemical cell includes a metal containing anode M? capturing and releasing cations, a metal containing cathode M? and an electrolyte including an anion X?and a cation M?+. During the charge process, the electrolyte allows reversible reactions wherein the anion dissociates from the electrolyte and reacts with the metal cathode forming M?Xy. At the same time, cations M?+ from the electrolyte deposit on the anode side. The reverse process happens during the discharge process.

Abstract: An electrode material includes surface-coated LixAyDzPO4 particles that contain Fe on surfaces of LixAyDzPO4 (wherein A represents one or two or more elements selected from the group consisting of Co, Mn, Ni, Cu, and Cr; D represents one or two or more elements selected from the group consisting of Mg, Ca, Sr, Ba, Ti, Zn, B, Al, Ga, In, Si, Ge, Sc, Y, and rare earth elements; 0<x?2; 0<y?1; and 0?z?1.5) particles and include a carbon coating film with which the surfaces of the LixAyDzPO4 particles containing Fe are coated, in which the surface-coated LixAyDzPO4 particles have a Li elution amount of 200 ppm to 700 ppm and a P elution amount of 500 ppm to 2000 ppm when being dipped in a sulfuric acid solution (pH=4) for 24 hours.

Abstract: This invention relates to a negative electrode material for lithium-ion batteries comprising silicon and having a chemically treated or coated surface influencing the zeta potential of the surface. The active material consists of particles or particles and wires comprising a core (11) comprising silicon, wherein the particles have a positive zeta potential in an interval between pH 3.5 and 9.5, and preferably between pH 4 and 9.5. The core is either chemically treated with an amino-functional metal oxide, or the core is at least partly covered with OySiHx groups, with 1<x<3, 1<y<3, and x>y, or is covered by adsorbed inorganic nanoparticles or cationic multivalent metal ions or oxides.

Abstract: Several embodiments related to batteries having electrodes with nanostructures, compositions of such nanostructures, and associated methods of making such electrodes are disclosed herein. In one embodiment, a method for producing an anode suitable for a lithium-ion battery comprising preparing a surface of a substrate material and forming a plurality of conductive nanostructures on the surface of the substrate material via electrodeposition without using a template.

Abstract: The present invention is directed to the fabrication of thin aluminum anode batteries using a highly reproducible process that enables high volume manufacturing of the galvanic cells. A method of fabricating a thin aluminum anode galvanic cell is provided, the method including, depositing a layer of catalytic metal on a surface of a first substrate, depositing and patterning a benzocyclobutene layer to form a reservoir having four sidewalls of benzocyclobutene on the surface of the catalytic layer, depositing a layer of aluminum on a surface of a second substrate and bonding the first substrate to the second substrate to form a galvanic cell bounded by the catalytic metal layer and the aluminum layer and separated by the reservoir walls of benzocyclobutene, the second substrate positioned in overlying relation to contact the four sidewalls of the reservoir with the aluminum layer facing the catalytic layer.

Abstract: Alloys of tunable compositions and corresponding optical, electrical and mechanical properties are described. Also described are their uses in optoelectronic devices and material interfaces.

Abstract: The disclosure relates to an anode material for a sodium-ion battery having the general formula AOx—C or ACx—C, where A is aluminum (Al), magnesium (Mg), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), zirconium (Zr), molybdenum (Mo), tungsten (W), niobium (Nb), tantalum (Ta), silicon (Si), or any combinations thereof. The anode material also contains an electrochemically active nanoparticles within the matrix. The nanoparticle may react with sodium ion (Na+) when placed in the anode of a sodium-ion battery. In more specific embodiments, the anode material may have the general formula MySb-M?Ox—C, Sb-MOx—C, MySn-M?Cx—C, or Sn-MCx—C. The disclosure also relates to rechargeable sodium-ion batteries containing these materials and methods of making these materials.

Abstract: A system and method for stabilizing electrodes against dissolution and/or hydrolysis including use of cosolvents in liquid electrolyte batteries for three purposes: the extension of the calendar and cycle life time of electrodes that are partially soluble in liquid electrolytes, the purpose of limiting the rate of electrolysis of water into hydrogen and oxygen as a side reaction during battery operation, and for the purpose of cost reduction.

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

Abstract: A negative electrode for a lithium ion secondary battery and a lithium ion secondary battery, the negative electrode including a multilayer film, the multilayer film having three or more layers on a metal base, wherein the multilayer film includes one or more porous layers.

Abstract: An anode, a lithium battery including the anode, and a method of manufacturing the anode. The anode includes: an anode active material including a metal alloyable with lithium; and a metal-carbon composite conducting agent having a density of 3.0 grams per cubic centimeter or greater.

Abstract: A rechargeable lithium battery includes a non-aqueous electrolyte, a negative electrode including a silicon-based negative active material, and a positive active material including a compound represented by a Chemical Formula 1, Li1+xCo1?yMyO2, wherein, ?0.2?x?0.2, 0<y?0.2, and M includes Ni and one selected from Mn, B, Mg, Ca, Sr, Ba, Ti, V, Cr, Fe, Cu, Al, and a combination thereof.

Abstract: The invention relates to a lithium manganese phosphate/carbon nanocomposite as cathode material for rechargeable electrochemical cells with the general formula LixMnyM1-y(PO4)z/C where M is at least one other metal such as Fe, Ni, Co, Cr, V, Mg, Ca, Al, B, Zn, Cu, Nb, Ti, Zr, La, Ce, Y, x=0.8-1.1, y=0.5-1.0, 0.9<z<1.1, with a carbon content of 0.5 to 20% by weight, characterized by the fact that it is obtained by milling of suitable precursors of LixMnyM1-y(PO4)z with electro-conductive carbon black having a specific surface area of at least 80 m2/g or with graphite having a specific surface area of at least 9.5 m2/g or with activated carbon having a specific surface area of at least 200 m2/g. The invention also concerns a process for manufacturing said nanocomposite.

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

Abstract: An active material composition includes a porous graphene nanocage and a source material. The source material may be a sulfur material. The source material may be an anodic material. A lithium-sulfur battery is provided that includes a cathode, an anode, a lithium salt, and an electrolyte, where the cathode of the lithium-sulfur battery includes a porous graphene nanocage and a sulfur material and at least a portion of the sulfur material is entrapped within the porous graphene nanocage. Also provided is a lithium-air battery that includes a cathode, an anode, a lithium salt, and an electrolyte, where the cathode includes a porous graphene nanocage and where the cathode may be free of a cathodic metal catalyst.

Abstract: Disclosed are precursor particles of a lithium composite transition metal oxide for lithium secondary batteries, wherein the precursor particles of a lithium composite transition metal oxide are composite transition metal hydroxide particles including at least two transition metals and having an average diameter of 1 ?m to 8 ?m, wherein the composite transition metal hydroxide particles exhibit monodisperse particle size distribution and have a coefficient of variation of 0.2 to 0.7, and a cathode active material including the same.

Abstract: A Li-ion battery is disclosed, the Li-ion battery including an anode, a cathode, a lithium donor formed from a Li-containing material, and an electrolyte in communication with the anode, the cathode, and the lithium donor. The lithium donor may be incorporated into the anode, incorporated into the cathode, a layer formed on either an anode side or a cathode side of a separator of the battery. The lithium donor is formed from Li-containing material insensitive to oxygen and aqueous moisture.

Abstract: A method of forming an electrode active material by reacting a metal fluoride and a reactant. The reactant can be a metal oxide, metal phosphate, metal fluoride, or a precursors expected to decompose to oxides. The method includes a milling step and an annealing step. The method can alternately include a solution coating step. Also included is the composition formed following the method.