Abstract: A cathode includes a lithium transition metal complex compound including lithium, one, or two or more transition metals, magnesium, and oxygen as constituent elements. In a standardized X-ray absorption spectrum of the lithium transition metal complex compound measured by an X-ray absorption spectroscopic method, a first absorption edge having absorption edge energy E1 in X-ray absorption intensity of about 0.5 exits in a range where X-ray energy is from about 1303 eV to about 1313 eV both inclusive, in a discharged state in which a discharge voltage is about 3.0 V, and a second absorption edge having absorption edge energy E2 in X-ray absorption intensity of about 0.5 exits, in a charged state in which a charge voltage V is from about 4.3 V to about 4.5 V both inclusive. The absorption edge energies E1 and E2 and the charge voltage V satisfy a relation of E2?E1?(V?4.25)×4.

Abstract: In accordance with one embodiment, an electrochemical cell includes a first anode including a form of lithium a first cathode including an electrolyte, and a first composite electrolyte structure positioned between the first anode and the first cathode, the first composite electrolyte structure including (i) a first support layer adjacent the first anode and configured to mechanically suppress roughening of the form of lithium in the first anode, and (ii) a first protective layer positioned between the first support layer and the first cathode and configured to prevent oxidation of the first support layer by substances in the first cathode.

Abstract: In a lithium ion secondary battery including a positive electrode, a separator, a negative electrode, and a package body, the negative electrode includes simple substance silicon as a negative electrode active material, and a negative electrode binder, and is doped with lithium, and the following formulas (1) and (2) are satisfied: 1.2?Ma/Mc?1.9??(1) 1.0<Ma/(Mc+MLi)<1.6??(2) wherein an amount of lithium inserted into the negative electrode until the negative electrode reaches a potential of 0.02 V with respect to metal lithium is Ma (a number of atoms), an amount of lithium released from the positive electrode until the positive electrode reaches a potential of 4.3 V with respect to metal lithium is Mc (a number of atoms), and an amount of lithium with which the negative electrode is doped is MLi (a number of atoms).

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: A method for electrochemically producing a tin/lithium oxide composite thin film includes providing a solution comprising 10?3 to 10?2 M lithium nitrate and 10?4 to 10?3 M stannic chloride or stannous chloride; electrodepositing the tin/lithium oxide composite thin film on a conductive substrate with a reference electrode of Ag/AgCI and a voltage of 900 to 1500 mV; and drying the tin/lithium oxide composite thin film at a temperature of 15 to 40° C. and a relative humidity of at least 75%.

Abstract: According to the invention there is provided a structural metallic rechargeable battery and a method of producing same. The battery uses one of an acid, alkaline or Li-ion chemistry and the battery has an anode structure, a cathode structure, each of which comprise a conductive foam which contains the active electrochemical reagents, and a structural separator which separates the conductive foams of anode from the cathode respectively. The anode structure and the cathode structure are each formed from a metal sheet or foil.

Abstract: A battery electrode for a lithium ion battery that includes an electrically conductive substrate having an electrode layer applied thereto. The electrode layer includes an organic material having high alkalinity, or an organic material which can be dissolved in organic solvents, or an organic material having an imide group(s) and aminoacetal group(s), or an organic material that chelates with or bonds with a metal substrate or that chelates with or bonds with an active material in the electrode layer. The organic material may be guanidine carbonate.

Abstract: An electrolyte for use in electrochemical cells is provided. The properties of the electrolyte include high conductivity, high Coulombic efficiency, and an electrochemical window that can exceed 3.5 V vs. Mg/Mg+2. The use of the electrolyte promotes the electrochemical deposition and dissolution of Mg without the use of any Grignard reagents, other organometallic materials, tetraphenyl borate, or tetrachloroaluminate derived anions. Other Mg-containing electrolyte systems that are expected to be suitable for use in secondary batteries are also described.

Abstract: The present invention provides an electrode comprising a current collector; an electrode active material layer formed on at least one surface of the current collector and comprising a mixture of electrode active material particles and a first binder polymer; and a porous coating layer formed on the surface of the electrode active material layer, comprising a mixture of inorganic particles and a second binder polymer and having a thickness deviation defined by the following Formula (1), and a manufacturing method thereof: (Tmax?Tmin)/Tavg?0.35??(1) wherein Tmax is a maximum thickness of the porous coating layer formed on the surface of the electrode active material layer, Tmin is a minimum thickness of the porous coating layer and Tavg is an average thickness of the porous coating layer.

Abstract: A cathode material for a lithium secondary battery capable of stably suppressing manganese dissolution even under high temperature and voltage conditions is provided. Further, by using the cathode material for a lithium secondary battery, a lithium secondary battery excellent in a charge/discharge cycle profile at a high temperature and a secondary battery module equipped with the battery are provided. The cathode material for a lithium secondary battery comprises a lithium manganese composite oxide and a coating layer formed on the surface of the lithium manganese composite oxide. The coating layer includes an oxide compound or a fluoride compound each containing M (wherein, M is at least one element selected from the group of Mg, Al and Cu), and a phosphorous compound. An atomic density of M at the side of the lithium manganese composite oxide in the coating layer is higher than an atomic density of M at the side of a surface layer of the coating layer facing to the electrolyte.

Abstract: A secondary battery includes: a cathode; an anode; and a non-aqueous electrolytic solution, wherein the cathode includes a second lithium-containing compound having an olivine-type crystal structure, a photoelectron spectrum of oxygen 1s obtained by surface analysis of the cathode with the use of X-ray photoelectron spectroscopy includes a third peak and a fourth peak, the third peak having an apex in a range in which binding energy is equal to or larger than 530 electron volts and less than 533 electron volts, and the fourth peak having an apex in a range in which binding energy is from 533 electron volts to 536 electron volts both inclusive and having spectrum intensity smaller than spectrum intensity of the third peak, and a ratio IE/ID between a spectrum intensity ID of the third peak and a spectrum intensity IE of the fourth peak is larger than ¼.

Abstract: Provided is a lithium secondary battery with three-dimensional network porous bodies as current collectors in which the internal resistance does not increase even after repeated charging and discharging. A lithium secondary battery including a positive electrode and a negative electrode each having as a current collector a three-dimensional network porous body, the positive electrode and the negative electrode being formed by filling at least an active material into pores of the three-dimensional network porous bodies, wherein the three-dimensional network porous body for the positive electrode is a three-dimensional network aluminum porous body having a hardness of 1.2 GPa or less, and the three-dimensional network porous body for the negative electrode is a three-dimensional network copper porous body having a hardness of 2.6 GPa or less.

Abstract: A particulate lithium metal composite materials having a layer containing phosphorous and a method for producing said phosphorous-coated lithium metal products, characterized in that melted, droplet-shaped lithium metal is reacted in a hydrocarbon solvent with a phosphorous source that contains the phosphorous in the oxidation stage 3, and use thereof for the pre-lithiation of electrode materials and the production of battery anodes.

Abstract: To simply manufacture a lithium-containing oxide at lower manufacturing cost. A method for manufacturing a lithium-containing composite oxide expressed by a general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)). A solution containing Li and P is formed and then is dripped in a solution containing M (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) to form a mixed solution. By a hydrothermal method using the mixed solution, a single crystal particle of a lithium-containing composite oxide expressed by the general formula LiMPO4 (M is one or more of Fe (II), Mn (II), Co (II), and Ni (II)) is manufactured.

Abstract: The present invention relates to the application of a force to enhance the performance of an electrochemical cell. The force may comprise, in some instances, an anisotropic force with a component normal to an active surface of the anode of the electrochemical cell. In the embodiments described herein, electrochemical cells (e.g., rechargeable batteries) may undergo a charge/discharge cycle involving deposition of metal (e.g., lithium metal) on a surface of the anode upon charging and reaction of the metal on the anode surface, wherein the metal diffuses from the anode surface, upon discharging. The uniformity with which the metal is deposited on the anode may affect cell performance. For example, when lithium metal is redeposited on an anode, it may, in some cases, deposit unevenly forming a rough surface. The roughened surface may increase the amount of lithium metal available for undesired chemical reactions which may result in decreased cycling lifetime and/or poor cell performance.

Abstract: Disclosed herein is a cathode active material including a lithium transition metal oxide based on at least one transition metal selected from a group consisting of Ni, Mn and Co. The lithium transition metal oxide contains fluorine, and most of the fluorine is present on a surface of the lithium transition metal oxide, and at least one metal selected from a group consisting of Mg, Ti, Zr, Al and Fe as well as sulfur (S) are further contained in the lithium transition metal oxide.

Abstract: A metal foil electrode comprising i) a reinforcement layer formed from a porous substrate, and ii) first and second layers of metal foil formed comprising lithium and/or sodium, wherein the reinforcement layer is disposed between the first and second metal foil layers and bonded (preferably pressure bonded) together to form a composite structure having a thickness of 100 microns or less.

Abstract: The present invention relates to a separator for an electrochemical cell, preferably a lithium ion battery, comprising a porous layer which comprises at least one block copolymer having three or more polymer blocks and at least one aluminum oxide or hydroxide, a lithium ion battery comprising such a separator, and a method for producing such a separator.

Abstract: A lithium ion secondary battery capable of improving the lithium ion input-output characteristics. An active material capable of storing and releasing lithium ions is a Li complex oxide or a Li complex oxoacid salt. A plurality of primary particles have a particle size distribution with 1 nm<D10<65 nm, 5 nm<D50<75 nm, and 50 nm<D90<100 nm. The maximum peak pore size A in a pore size distribution as measured by a mercury intrusion technique is 10 nm?A?75 nm. The ratio B/A of the maximum peak pore size A and the crystallite size B is 0.5<B/A?1.

Abstract: An electron collector structure and a lithium battery including the same are disclosed. The electron collector structure includes a conductive thin film; and a graphene layer that is coated on the surface of the conductive thin film and may improve the electrical conductivity of an electrode plate. As an electrode of the lithium battery includes the electron collector structure, the electrical conductivity of the electrode may be increased so that the energy consumption properties as well as the lifespan characteristics of the lithium battery may be also improved.

Abstract: The invention relates to electrodes that contain active materials of the formula: AaMb(SO4)cXx wherein A is a single or mixed alkali metal phase comprising one or more of sodium, potassium, lithium mixed with sodium, lithium mixed with potassium or lithium mixed with sodium and potassium; M is selected from one or more transition metals and/or non-transition metals and/or metalloids; X is a moiety comprising one or more atoms selected from halogen and OH; and further wherein 1<a<3; b is in the range: 0<b?2; c is in the range: 2?c?3 and x is in the range 0?x?1. Such electrodes are useful in, for example, sodium ion battery applications.

Abstract: An active material contains a triclinic LiVOPO4 crystal particle, while the crystal particle has a spherical form and an average particle size of 20 to 200 nm.

Abstract: A 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 transition metal oxide; and a lithium-containing impurity on a surface of the lithium transition metal oxide. The lithium-containing impurity includes free lithium in an amount of about 0.050 wt % or less based on a total weight of the composite cathode active material, and LiOH and Li2CO3 in a mole ratio of LiOH to Li2CO3 of about 0.50 or less.

Abstract: Electrode structures, and more specifically, electrode structures for use in electrochemical cells, are provided. The electrode structures described herein may include one or more protective layers. In one set of embodiments, a protective layer may be formed by exposing a lithium metal surface to a plasma comprising ions of a gas to form a ceramic layer on top of the lithium metal. The ceramic layer may be highly conductive to lithium ions and may protect the underlying lithium metal surface from reaction with components in the electrolyte. In some cases, the ions may be nitrogen ions and a lithium nitride layer may be formed on the lithium metal surface. In other embodiments, the protective layer may be formed by converting lithium to lithium nitride at high pressures. Other methods for forming protective layers are also provided.

Abstract: In a lithium ion secondary battery, an electrode assembly, in which a positive electrode sheet having a positive electrode mixture layer and a negative electrode sheet having a negative electrode mixture layer are overlain each other, is housed in a container together with a nonaqueous electrolyte solution. The negative electrode mixture layer includes a carbon material having at least in part a graphite structure as a negative active material.

Abstract: This invention aims to provide a carbon material for a nonaqueous secondary battery having a high capacity and excellent charging/discharging load characteristics, which is used as a negative electrode material for a nonaqueous secondary battery. This invention relates to a carbon material for a nonaqueous secondary battery, which has a specific (1) Raman R value, (2) N atom concentration/C atom concentration ratio, and (3) S atom concentration/C atom concentration ratio.

Abstract: The present disclosure relates to a method for prelithiation, and in particular, to a method for prelithiation that predopes lithium into at least one unit cell uniformly in large amounts. According to an aspect of the present disclosure, there is provided a method for prelithiation including an preparing at least one unit cell, the unit cell comprising a cathode, an anode, and a separator interposed between the cathode and the anode, disposing the prepared at least one unit cell in a reaction tank, and connecting electrodes having the same polarity, adding an electrolyte solution into the reaction tank, disposing a lithium metal plate in the electrolyte solution, and connecting the lithium metal plate to the anode, and doping the anode.

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: Provided an all-solid lithium secondary battery hardly gives rise to internal resistance even if charging and discharging are repeated. The all-solid lithium secondary battery including a positive electrode and a negative electrode, each of electrodes being an electrode in which a three-dimensional network porous body is used as a current collector and pores of the three-dimensional network porous body are filled with at least an active material, wherein the three-dimensional network porous body of the positive electrode includes an aluminum alloy with a Young's modulus of 70 GPa or higher and the three-dimensional network porous body of the negative electrode includes a copper alloy with a Young's modulus of 120 GPa or higher.

Abstract: A laminated-structure battery includes a cathode, an anode, and an electrolyte layer and a laminated structure prepared by laminating at least three layers of single battery layers each of the single battery layers prepared by opposing the cathode and the anode to each other with an interposal of the electrolyte layer. The cathode includes a cathode active material having at least a lithium-transition metal complex, a lithium-transition metal phosphorus compound or a lithium-transition metal sulfuric acid compound.

Abstract: Provided are a current collector, an electrode, and a nonaqueous electrolyte secondary battery, each of which capable of reducing internal resistance and producing cost. More specifically, provided are: a three-dimensional network metal porous body for a current collector, comprising a sheet-shaped three-dimensional network metal porous body, wherein a degree of porosity of the sheet-shaped three-dimensional network metal porous body is 90% or more and 98% or less, and a 30%-cumulative pore diameter (D30) of the sheet-shaped three-dimensional network metal porous body calculated from a fine pore diameter measurement conducted by a bubble point method is 20 ?m or more and 100 ?m or less; an electrode using the three-dimensional network metal porous body; and a nonaqueous electrolyte secondary battery including the electrode.

Abstract: A battery electrode composition is provided comprising core-shell composites. Each of the composites may comprise a sulfur-based core and a multi-functional shell. The sulfur-based core is provided to electrochemically react with metal ions during battery operation to store the metal ions in the form of a corresponding metal-sulfide during discharging or charging of the battery and to release the metal ions from the corresponding metal-sulfide during charging or discharging of the battery. The multi-functional shell at least partially encases the sulfur-based core and is formed from a material that is (i) substantially permeable to the metal ions of the corresponding metal-sulfide and (ii) substantially impermeable to electrolyte solvent molecules and metal polysulfides.

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: The present invention provides a LiCoO2-containing powder comprising LiCoO2 having a stoichiometric composition via heat treatment of a lithium cobalt oxide and a lithium buffer material to make equilibrium of a lithium chemical potential there between; a lithium buffer material which acts as a Li acceptor or a Li donor to remove or supplement Li-excess or Li-deficiency, coexisting with a stoichiometric lithium metal oxide; and a method for preparing a LiCoO2-containing powder. Further, provided is an electrode comprising the above-mentioned LiCoO2-containing powder as an active material, and a rechargeable battery comprising the same electrode.

Abstract: A cathode active material includes a core including a material having an olivine structure, and a nitrogen atom doped into at least a portion of the core.

Abstract: A method is disclosed for producing elements ultra-low diameter, ultra-high aspect ratio nanowires. A hierarchical template with ordered and arrayed nanopores either freestanding or on a support material is provided. The template can be pre-shaped. Optionally, one or more compounds can be layered within the nanopores to reduce the diameters thereof. The template is filled with material to form a nanostructure array configured as ultra-low diameter, ultra-high aspect ratio nanowires with a diameter of less than 10 nm. The optional layering is self-initiated by selectively adjusting pH of a coating material. The nanostructure array may be supported in a lower thermal conductivity material. The method can be used to produce elements that function as a phonon-confined thermoelectric device, a photovoltaic device and a 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: A manufacturing method of a battery electrode includes: (1) mixing Li2S particles with a binder to form a slurry, the binder including at least one of: (a) an ester moiety, (b) an amide moiety, (c) a ketone moiety, (d) an imine moiety, (e) an ether moiety, and (f) a nitrile moiety; and (2) disposing the slurry on a current collector.

Abstract: The invention relates to particulate lithium metal composite materials, stabilized by alloy-forming elements of the third and fourth primary group of the PSE and method for production thereof by reaction of lithium metal with film-forming element precursors of the general formulas (I) or (II): [AR1R2R3R4]Lix (I), or R1R2R3A-O-AR4R5R6 (II), wherein: R1R2R3R4R5R6=alkyl (C1-C12), aryl, alkoxy, aryloxy-, or halogen (F, Cl, Br, I), independently of each other; or two groups R represent together a 1,2-diolate (1,2-ethandiolate, for example), a 1,2- or 1,3-dicarboxylate (oxalate or malonate, for example) or a 2-hydroxycarboxylate dianion (lactate or salicylate, for example); the groups R1 to R6 can comprise additional functional groups, such as alkoxy groups; A=boron, aluminum, gallium, indium, thallium, silicon, germanium, tin, lead; x=0 or 1 for B, Al, Ga, In, Tl; x=0 for Si, Ge, Sn, Pb; in the case that x=0 and A=B, Al, Ga, In, Tl, R4 is omitted, or with polymers comprising one or more of the elements B, Al, Ga,

Abstract: The present invention relates to a lithium-ion battery comprising a positive electrode containing, as a principal component, a lithium oxide having a layered rock-salt structure and represented by chemical formula: LixM1yM2zO2-d, wherein 1.16?x?1.32, 0.33?y?0.63, 0.06?z?0.50, M1 represents a metal ion selected from Mn, Ti and Zr, or a mixture thereof, and M2 represents a metal ion selected from Fe, Co, Ni and Mn, or a mixture thereof; and a negative electrode containing, as a principal component, a material capable of intercalating/deintercalating lithium ions, wherein an oxygen deficiency (d) of the positive electrode is not less than 0.05 and not more than 0.20.

Abstract: An electrochemical device includes a positive electrode, a negative electrode, and a nonaqueous electrolytic solution, wherein the negative electrode contains a magnesium element, and wherein the nonaqueous electrolytic solution is one obtained after dipping metallic lithium for a predetermined time period.

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

Abstract: Ultrafast battery devices having enhanced reliability and power density are provided. Such batteries can include a cathode including a first silicon substrate having a cathode structured surface, an anode including a second silicon substrate having an anode structured surface positioned adjacent to the cathode such that the cathode structured surface faces the anode structured surface, and an electrolyte disposed between the cathode and the anode. The anode structured surface can be coated with an anodic active material and the cathode structured surface can be coated with a cathodic active material.

Abstract: Provided are novel negative electrodes for use in lithium ion cells. The negative electrodes include one or more high capacity active materials, such as silicon, tin, and germanium, and a lithium containing material prior to the first cycle of the cell. In other words, the cells are fabricated with some, but not all, lithium present on the negative electrode. This additional lithium may be used to mitigate lithium losses, for example, due to Solid Electrolyte Interphase (SEI) layer formation, to maintain the negative electrode in a partially charged state at the end of the cell discharge cycle, and other reasons. In certain embodiments, a negative electrode includes between about 5% and 25% of lithium based on a theoretical capacity of the negative active material. In the same or other embodiments, a total amount of lithium available in the cell exceeds the theoretical capacity of the negative electrode active material.

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: Disclosed is a cathode material comprising a mixture of an oxide powder (a) defined herein and an oxide powder (b) selected from the group consisting of an oxide powder (b1) defined herein and an oxide powder (b2) defined herein and a combination thereof wherein a mix ratio of the two oxide powders (oxide powder (a):oxide powder (b)) is 50:50 to 90:10. The cathode material uses a combination of an oxide powder (a) and 50% or less of an oxide powder (b) which can exert high capacity, high cycle stability, superior storage stability and high-temperature stability, thus advantageously exhibiting high energy density and realizing high capacity batteries.

Abstract: A graphite material suitable as an electrode material for non-aqueous electrolytic secondary batteries; a method for producing the same and a carbon material for battery electrodes; and a secondary battery. The graphite material includes crystallite graphite particles wherein an oxygen amount (a) (mass %) in a region from a particle surface of the graphite material to a depth of 40 nm is within a range of 0.010?(a)?0.04 as determined by a peak intensity of O1s obtained by HAX-PES measurement using a hard X-ray of 7,940 eV.

Abstract: The present invention relates to a method for producing lithium carbonate, the method including: mixing ammonia and carbon dioxide gas (carbonate gas) with an aqueous solution containing lithium chloride to conduct a carbonation reaction; and thereafter, recovering a produced solid by solid-liquid separation, and also relates to a method for producing high purity lithium carbonate.

Abstract: A negative electrode and a lithium battery including the same, the negative electrode including nanotubes including a Group 14 metal/metalloid, disposed on a conductive substrate.

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.