Abstract: According to one embodiment, there is provided an active material. The active material includes secondary particles. The secondary particles include first primary particles and second primary particles. The first primary particles include an orthorhombic Na-containing niobium-titanium composite oxide. The second primary particles include at least one selected from the group consisting of a carbon black, a graphite, a titanium nitride, a titanium carbide, a lithium titanate having a spinel structure, a titanium dioxide having an anatase structure, and a titanium dioxide having a rutile structure.

Abstract: An electrode film of an all-solid-state battery, an all-solid-state battery, and an electrode of an all-solid-state battery, which are fabricated by a process that includes thermally consolidating an electrode film by sintering at a temperature that does not exceed a predetermined threshold of a lowest melting temperature between an anode material and an cathode material.

Abstract: Disclosed is a functionalized graphene containing two or more amines having excellent electrical, thermal and mechanical properties by allowing good interfacial bonding force and uniform dispersion with a thermoplastic polymer, and a method for preparing the functional graphene. The functionalized graphene comprises a carbon material selected from the group consisting of graphene, reduced graphene, graphene oxide, and mixture thereof; and a monovalent amine group and a bivalent or higher amine group which are bonded to the carbon material.

Abstract: The invention relates to formulations comprising: (i) a first active material; (ii) a second active material; and (iii) a metal-coordination complex, wherein the first active material and the second active material have at least one surface property which is different, one from the other. Such formulations are more homogenous than those formed without the metal-coordination complex and can be used to form composite materials, such as those forming part of a conductive interface, having advantageous properties and providing for improvement in functionality of the conductive interface.

Abstract: A process for the facile prelithiation of silicon-containing materials for use in lithium ion batteries is disclosed. The process can include using a lithium additive comprising LiSt, Li2O—SiO2—TiO2—P2O5, LATP, LAGP, LLTO, LLZO, Li3N, LiBF4, Li2CO3, Li3PO4, lithium-enriched variations thereof, or combinations thereof. The resulting prelithiated materials demonstrate enhanced physicochemical properties providing for high target capacity and excellent cycle stability for the batteries prepared with the materials.

Abstract: A composite anode material including an active material including a core of silicon, silicon oxide, or combination thereof encased within a buffer layer including a polymeric material, and a shell encapsulating the active material. The shell may include graphene, graphene oxide, partially reduced graphene oxide, or combinations thereof.

Abstract: Manufacturing an electrode by forming an electrode structure on a grounded conductive substrate and applying a voltage across the electrode structure to generate an electric field through the electrode structure to arrange the dipolar particles within the electrode structure.

Abstract: A solid-state battery including a cathode, an anode, and a solid-state electrolyte layer including a solid-state electrolyte, wherein the solid-state electrolyte layer is disposed between the cathode and the anode, wherein the anode includes an anode active material, a first binder, and a second binder, the first binder is inactive to the solid-state electrolyte, the second binder has a tensile modulus greater than a tensile modulus of the first binder, and the second binder has a binding force which is greater than a binding force of the first binder.

Abstract: The present application provides an electrode and a lithium-ion battery. The electrode comprises: a current collector; a first active material layer comprising a first active material; and a second active material layer comprising a second active material; wherein the first active material layer is arranged between the current collector and the second active material layer. The first active material layer is formed on at least one surface of the current collector, and a ratio of an average particle size of the second active material to an average particle size of the first active material is from 1:1 to 40:1. The active material layer is used in the present application to ensure that the lithium-ion battery does not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the lithium-ion battery.

Abstract: (Problem to be Solved) The present application is to provide: a positive electrode material for producing a lithium-sulfur solid-state battery that does not experience degradation of battery performance from charging/discharging cycling, does not present the fire risk of liquid electrolytes, and thereby makes battery performance compatible with safety; an all-solid-state lithium-sulfur battery that uses the positive electrode material; and a production method. (Means for Solution) The present application relate to a lithium-sulfur solid-state battery positive electrode material that contains: sulfur; a conductive material; a binder; and an ionic liquid or a solvate ionic liquid, and an all-solid-state lithium-sulfur battery that includes: a positive electrode that comprises the positive electrode material; a negative electrode; and an oxide solid electrolyte.

Abstract: The present invention relates to a battery technology, and more particularly, to a current collector that may be widely used in secondary batteries and an electrode employing the same. The current collector according to an embodiment of the present invention includes a conductive substrate; and a conductive fiber layer, which is dispersed on the conductive substrate and comprises pores. The conductive fiber layer comprises a plurality of metal filaments and liner binders mixed with the plurality of metal filaments, and the conductive fiber layer is combined with the conductive substrate via the mixed linear binders.

Abstract: The nonaqueous electrolyte battery inorganic particles according to the present invention include a metal element having a smaller electronegativity than manganese in a crystal structure, and comprise a laminar compound which has an interlayer distance of 0.40-2.0 nm or less and which has exchangeable cations other than hydrogen ions between the layers.

Abstract: A method for manufacturing an active material, capable of improving the discharge capacity of a lithium ion secondary battery is provided. The method for manufacturing an active material according to the present invention includes a first step of heating a mixture solution including a lithium source, a phosphate source, a vanadium source, and water under pressure to generate a precursor in the mixture solution, and adjusting the pH of the mixture solution including the precursor to be 6 to 8; and a second step of heating the precursor at 425 to 650° C. after the first step to generate an active material.

Abstract: An aerosol delivery device is provided that includes a reservoir configured to retain an aerosol precursor composition, a heating element, and a power source connected to an electrical load that includes the heating element. The power source includes a rechargeable lithium-ion battery having a carbon-based anode, an electrochemically-active cathode, and a non-aqueous electrolyte in contact with the anode and the cathode, with the non-aqueous electrolyte including a lithium salt in a carbonate solvent or solvent mixture. The aerosol delivery device also includes a microprocessor configured to operate in an active mode in which the microprocessor is configured to direct power from the power source to the heating element and thereby control the heating element to activate and vaporize components of the aerosol precursor composition.

Abstract: The present application is generally directed towards electrochemical energy storage devices. The devices comprise electrode material suspended in an appropriate electrolyte. Such devices are capable of achieving economical $/kWh (cycle) values and will enable much higher power and cycle life than currently used devices.

Abstract: A negative electrode for nonaqueous electrolyte secondary batteries is provided which includes SiOx and allows the cycle characteristics of batteries to be enhanced. A negative electrode according to an example embodiment includes a negative electrode current collector and a negative electrode mixture layer disposed on the current collector. The negative electrode mixture layer includes SiOx (0.5?x?1.5) particles having a carbon coating on a particle surface, carbonaceous active material particles, and a compound having at least one of a carboxyl group and a hydroxyl group and having an average number of etherifying agent moieties present per unit molecule of not more than 0.8. The carbon coating includes a first coating disposed on the surface of the SiOx and a second coating disposed on the first coating and including carbon having higher crystallinity than the carbon forming the first coating.

Abstract: Provided as a nonaqueous electrolyte secondary battery insulating porous layer that allows a nonaqueous electrolyte secondary battery to have an improved discharge output characteristic is a nonaqueous electrolyte secondary battery insulating porous layer containing fine particles of a metal salt having a Lewis acid peak area within a range of not less than 0.2 g?1 and not more than 3.6 g?1 per unit weight, the Lewis acid peak area being measured by an infrared spectroscopy-based acid nature evaluation method for a solid surface, the Lewis acid peak area of a metal salt per unit weight being defined as a value resulting from dividing (i) the area of a peak present in a region of 1447 cm?1 to 1460 cm?1 of an infrared absorption spectrum measured of a sample on which pyridine was adsorbed and from which the pyridine has then been desorbed by (ii) the weight of the metal salt.

Abstract: Process for making a particulate material of general formula (I), wherein the integers are defined as follows: M is selected from Al and Ti, x is in the range of from 0.015 to 0.03, a is in the range of from 0.3 to 0.6, b is in the range of from 0.05 to 0.35, c is in the range of from 0.2 to 0.5, d is in the range of from 0.001 to 0.

Abstract: The present invention pertains to an electrode-forming composition comprising: (a) at least one fluoropolymer [polymer (F)]; (b) particles of at least one active electrode material [particles (P)], said particles (P) comprising: —a core comprising at least one active electrode compound [compound (NMC)] of formula (I): Li[Lix(ApBQCw)1-x]O2??(I) wherein A, B and C, different from each other, are selected from the group consisting of Fe, Ni, Mn and Co, x is comprised between 0 and 0.3, P is comprised between 0.2 and 0.8, preferably between 0.2 and 0.5, more preferably between 0.2 and 0.4, Q is comprised between 0.1 and 0.4, and W is comprised between 0.1 and 0.4, and —an outer layer consisting of a metal compound [compound (M)] different from Lithium, said outer layer at least partially surrounding said core; and (c) a liquid medium [medium (L)].

Abstract: Provided is an electrode material which leads to a lithium ion secondary battery that has high energy density. An electrode material for a lithium ion secondary battery of the present invention is characterized by containing: a coarse particle of a first active material that is able to act as a positive electrode active material or a negative electrode active material of a lithium ion secondary battery; and a particle of a composite composed of conductive carbon and a second active material attached to the conductive carbon that is able to act as an active material of the same electrode as the first active material. This electrode material for a lithium ion secondary battery is also characterized in that: a diameter of the coarse particle of the first active material is larger than a diameter of the particle of the composite; and the particle of the composite is filled in a gap formed between the particles of the first active material. A conductive agent can be additionally contained in the gap.

Abstract: A cylindrical single-piece lithium-ion battery of 400 Ah includes: a cylindrical battery enclosure (1), a battery mandrel (3), a plurality of tabs (4), a wiring terminal (6), a positive and negative electrode cover (11); a positive electrode sheet, said battery positive electrode is composed of LiFePO4, conductive carbon-black, graphite, adhesive such as PVDF, and solvent such as NMP; a negative electrode sheet, the battery negative electrode is composed of lithium titanate, conductive carbon-black, graphite, adhesive such as PVDF, and solvent such as NMP. The cylindrical lithium-ion battery made by the invention has a capacity of 400 Ah which is the one reportedly having the largest capacity in the world presently.

Abstract: The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and/or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and/or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and/or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

Abstract: An active material layer for an electrode of a lithium ion battery has a first active material comprising silicon-based particles, a second active material comprising graphite and conduits between the first active material and the second active material, the conduits being a conductive material and providing area for expansion of the first active material due to lithiation while maintaining contact between the first active material and the second active material.

Abstract: A laminated porous film, including: a porous layer containing a polyolefin; and a porous layer containing a heat-resistant material and provided on at least one surface of the porous layer containing the polyolefin, the laminated porous film satisfying Formula (I) below, 0.1136×?+0.0819×?+3.8034?4.40??(I), where ? is a value of a film resistance (?·cm2) of the laminated porous film, and ? is a value of a volume (cc/m2) of the heat-resistant material contained per 1 m2 of the porous layer containing the heat-resistant material.

Abstract: Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

Abstract: There is provided a positive electrode for nonaqueous electrolyte secondary batteries in which a decrease in the initial discharge voltage can be suppressed even when a positive electrode exposed to the air is used. The positive electrode for a nonaqueous electrolyte secondary battery according to an aspect of the present invention contains a lithium transition metal oxide constituted by a secondary particle formed by aggregation of primary particles. A rare-earth compound adheres to at least part of a surface of the secondary particle, and a compound containing lithium and boron adheres to at least part of the surface of the secondary particle and at least part of an interface between primary particles aggregated at the surface of the secondary particle.

Abstract: A method for manufacturing an electrode sheet includes the steps of forming a granulated material by mixing an electrode active material, a cellulose derivative, a binder, and an aqueous solvent, and placing the granulated material in the form of a sheet on electrode current collector foil. The cellulose derivative is at least one selected from the group consisting of hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxyethyl methylcellulose, and hydroxypropyl methylcellulose, and has 3.0 or more moles of substitution, which is an average number of hydroxy groups substituted per glucose unit.

Abstract: The present invention relates to an electrode binder composition including a high-molecular-weight poly(amic acid) having a weight-average molecular weight of 5,000 or more and 100,000 or less and a low-molecular-weight poly(amic acid) having a weight-average molecular weight of 100 or more and 2,000 or less, and the present invention can provide an electrode binder composition that leads to a secondary battery having a high capacity superior in the initial charge/discharge efficiency and the cycle characteristics.

Abstract: Disclosed herein are cathode formulations comprising a lithium ion-based electroactive material and a carbon black having a BET surface area ranging from 130 to 700 m2/g and a ratio of STSA/BET ranging from 0.5 to 1. Also disclosed are cathodes comprising the cathode formulations, electro-chemical cells comprising the cathodes, and methods of making the cathode formulations and cathodes.

Abstract: A method of forming a particulate material comprising silicon, the method comprising the step of reducing a particulate starting material comprising silica-containing particles having an aspect ratio of at least 3:1 and a smallest dimension of less than 15 microns, or reducing a particulate starting material comprising silica-containing particles comprising a plurality of elongate structural elements, each elongate structural element having an aspect ratio of at least 3:1 and a smallest dimension of less than 15 microns.

Abstract: Provided are a method of preparing a cathode active material including coating a surface of a lithium transition metal oxide with a lithium boron oxide by dry mixing the lithium transition metal oxide and a boron-containing compound and performing a heat treatment, and a cathode active material prepared thereby. A method of preparing a cathode active material according to an embodiment of the present invention may easily transform lithium impurities present in a lithium transition metal oxide into a structurally stable lithium boron oxide by performing a heat treatment near the melting point of a boron-containing compound. Also, a coating layer may be formed in which the lithium boron oxide is uniformly coated in an amount proportional to the used amount of the boron-containing compound even at a low heat treatment temperature.

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: Disclosed is a method of preparing a positive electrode active material for lithium secondary batteries, the method including pre-activating at least one lithium transition metal oxide selected from compounds represented by Formula (1) below and modifying a surface of the pre-activated lithium transition metal oxide: (1?x)LiM?O2?yAy?xLi2MnO3?y?Ay???(1), wherein M? is MnaMb; M is at least one selected from the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; A is at least one selected from the group consisting of anions such as PO4, BO3, CO3, F and NO3; 0<x<1; 0<y?0.02; 0<y??0.02; 0.5?a?1.0; 0?b?0.5; and a+b=1.

Abstract: An alkaline electrochemical cell having an anode including electrochemically active anode material, a cathode including electrochemically active cathode material, a separator between the anode and the cathode, and an electrolyte. The electrolyte includes a hydroxide dissolved in water. The separator in combination with the electrolyte has an initial area-specific resistance between about 100 mOhm-cm2 and about 220 mOhm-cm2.

Abstract: Disclosed is a method for manufacturing a separator. The method includes (S1) preparing a porous planar substrate having a plurality of pores, (S2) preparing a slurry containing inorganic particles dispersed therein and a polymer solution including a first binder polymer and a second binder polymer in a solvent, and coating the slurry on at least one surface of the porous substrate, (S3) spraying a non-solvent incapable of dissolving the second binder polymer on the slurry, and (S4) simultaneously removing the solvent and the non-solvent by drying. According to the method, a separator with good bindability to electrodes can be manufactured in an easy manner. In addition, problems associated with the separation of inorganic particles in the course of manufacturing an electrochemical device can be avoided.

Abstract: A cathode mixture, a non-aqueous electrolyte secondary battery, and manufacture method thereof are provided. The cathode mixture for a non-aqueous electrolyte secondary battery includes: a cathode active material having an olivine type crystal structure; and an inorganic oxide which does not contribute to charge and discharge. A particle diameter A of the cathode active material lies within a range from 0.1 ?m or more to 0.5 ?m or less. There is a relation of A>B between the particle diameter A of the cathode active material and a particle diameter B of the inorganic oxide.

Abstract: The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and/or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and/or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and/or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

Abstract: An electrode material for a lithium-ion secondary battery of the present invention includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4, have an orthorhombic crystal structure, and have a space group of Pmna, in which a mis-fit value [(1?(b2×c2)/(b1×c1))×100] of a bc plane which is computed from lattice constants b1 and c1 of the LiFexMn1-w-x-y-zMgyCazAwPO4 and lattice constants b2 and c2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 by means of an oxidation treatment using nitrosonium tetrafluoroborate in acetonitrile is 1.32% or more and 1.85% or less.

Abstract: An electrode material, an electrode, and a lithium ion battery in which it is possible to improve not only the amount of gas generated in the battery during charge and discharge but also the deterioration of battery components without reducing the charge and discharge capacity are provided. The electrode material is an electrode material including carbonaceous electrode active material complex particles which include a carbonaceous material on surfaces of electrode active material particles, in which an oxygen content rate in the carbonaceous material is 5.0% by mass or less, and a coating ratio of the carbonaceous material on the surfaces of the carbonaceous electrode active material complex particles is 60% or more.

Abstract: The present disclosure is directed to electrochemical cells having injection molded or 3D printed components, such as cathodes, anodes, and/or electrolytes, and methods for making such electrochemical cells. The cathodes, anodes, and/or electrolytes can be formed from a binder resin and various conductive and active materials, mixtures of which are injected into a mold under heat and pressure to form the components of the electrochemical cells. The cathode can include conductive metallic powder, flakes, ribbons, fibers, wires, and/or nanotubes. Further, electrochemical arrays can be formed from multiple electrochemical cells having injection molded or 3D printed components.

Abstract: In a method for manufacturing a connecting contact for an electrode of an electrochemical store, the electrode having a first material, a contact element made of a second material is provided, the contact element having a section coated using the first material, and the coated section is electrically and mechanically connected to the electrode to manufacture the connecting contact.

Abstract: Composite materials for a cathode of an electrochemical cell. The composite materials comprise Li[M1?xLix]O2 or yLi2MnO3.(1?y)LiMO2 (M=Ni, Co, Mn, 0<x<0.5, 0<y<1), and at least one of LiMn1.5Ti0.5O4 and LiMn1.5Ni0.5O4. A Li-ion electrochemical cell including a cathode comprising the composite materials is also provided. The Li-ion electrochemical cell controls irreversible capacity loss and maintain a good cycling stability.

Abstract: [Problems] To provide an electrode material for a lithium-ion rechargeable battery having a high mass energy density at a low temperature or in a high-speed charge and discharge. [Means for Solving the Problems] An electrode material for a lithium-ion rechargeable battery includes particles which are made of LiFexMn1-w-x-y-zMgyCazAwPO4 (here, A represents at least one element selected from Co, Ni, Zn, Al, and Ga, 0?w?0.05, 0.05?x?0.35, 0.01?y?0.10, and 0.0001?z?0.002), have an orthorhombic crystal structure, and have a space group of Pmna, in which a change ratio (V1?V2)/V1 between a lattice volume V1 of LiFexMn1-w-x-y-zMgyCazAwPO4 and a lattice volume V2 of FexMn1-w-x-y-zMgyCazAwPO4 obtained by chemically deintercalating Li from LiFexMn1-w-x-y-zMgyCazAwPO4 is in a range of 0.06 to 0.09.

Abstract: Disclosed are an electrode assembly for secondary batteries and a lithium secondary battery including the same. More particularly, an electrode assembly including a cathode, an anode and a separator, wherein the cathode includes a lithium cobalt-based oxide, and a lithium nickel-based composite oxide forming a coating layer over a surface of the lithium nickel-based composite oxide by reacting with a fluorine-containing polymer, as a cathode active material, the anode includes carbon and a silicon oxide as an anode active material, an operating voltage is 2.50 V to 4.35 V, and the cathode active material has high rolling density by a bimodal form in which an average diameter of the cobalt-based oxide and an average diameter of the lithium nickel-based composite oxide are different, and a lithium secondary battery including the same are disclosed.

Abstract: An alkali metal oxyanion cathode material comprising particles, where the particles carry, on at least a portion of the particle surface, carbon deposit by pyrolysis is described. The particles have the general formula A:M:M?:XO4 where the average valency of M is +2 or greater; A is at least one alkali metal selected from Li, Na and K; M is at least Fe and/or Mn; and M? is a metal of valency of 2+ or more.

Abstract: An electrode material including electrode active material particles having a carbonaceous film formed on the surfaces thereof in which the coatability of the carbonaceous film can be guaranteed even when a crushing process is carried out, and the rate characteristics and the like are not degraded during charge and discharge, an electrode and a lithium ion battery having excellent charge and discharge characteristics for which the electrode material is used are provided. The electrode material includes electrode active material particles having a carbonaceous film formed on surfaces thereof, and an affinity value to N-methyl-2-pyrrolidone measured through pulse NMR is in a range of 5000 to 20000.

Abstract: Disclosed is a lithium secondary battery that includes an anode coated with an anode mixture including an anode active material, a cathode coated with a cathode mixture including a cathode active material, and a non-aqueous electrolyte, wherein the anode mixture includes, as aqueous binders, carboxymethyl cellulose (CMC) having a degree of substitution of a hydroxyl group (—OH) with a carboxymethyl group (—CH2CO2H) of 0.7 to 1.2, a molecular weight (Mn) of 500,000 to 900,000, and a pH of 6.5 to 8.0 and styrene-butadiene rubber (SBR) having a particle diameter of 90 nm to 150 nm and a tensile strength of 90 kgf to 160 kgf, and the anode has an electrode coating amount of 10 to 20 mg/cm2 and that enhances electrode processability and reduces a swelling phenomenon.

Abstract: A battery cell (10) having a positive electrode (3) and a negative electrode (1), wherein the, in particular, negative electrode (1) comprises a coating (5) containing a polymer which contains catechol groups and the coating (5) is a dry coating, is described.

Abstract: Materials are presented of the formula: AxMyMiziO2?d, where A is sodium or a mixed alkali metal including sodium as a major constituent; x>0.5; M is a transition metal; y>0; Mi, for i=1, 2, 3 . . . n, is a metal or germanium; z1>0 zi?0 for each i=2, 3 . . . n; 0<d?0.5; the values of x, y, zi and d are such as to maintain charge neutrality; and the values of y, zi and d are such that y+?zi>½(2?d). The formula includes compounds that are oxygen deficient. Further the oxidation states may or may not be integers i.e. they may be whole numbers or fractions or a combination of whole numbers and fractions and may be averaged over different crystallographic sites in the material. Such materials are useful, for example, as electrode materials in rechargeable battery applications.

Abstract: A current collector including a first principal plane and a second principal plane. In the current collector, the roughness of the first principal plane and second principal plane being mutually different.