Abstract: The present invention relates to a carbon nanotube-transition metal oxide composite and a method for making the composite. The composite comprises at least one carbon nanotube and a plurality of transition metal oxide nanoparticles. The plurality of transition metal oxide nanoparticles are chemically bonded to the at least one carbon nanotube through carbon-oxygen-metal (C—O-M) linkages, wherein the metal is a transition metal element. The method for making the composite comprising the following steps: step 1, providing at least one carbon nanotube obtained from a super-aligned carbon nanotube array; step 2, pre-oxidizing the at least one carbon nanotube; step 3, dispersing the at least one carbon nanotube in a solvent to form a first suspension; step 4, dispersing a material containing transition metal oxyacid radicals in the first suspension to form a second suspension; and step 5, removing the solvent from the second suspension and drying the second suspension.

Abstract: Provided are a negative electrode for a lithium secondary negative electrode battery including: a current collector; a first negative electrode active material layer disposed on the current collector and including a silicon-based active material, a first graphite-based active material, and a linear conductive material; and a second negative electrode active material layer disposed on the first negative electrode active material layer and including a second graphite-based active material. The first graphite-based active material has a carbon coating layer on at least a part of a surface. Also provided is a lithium secondary battery including the negative electrode.

Abstract: A negative electrode active material for a non-aqueous electrolyte secondary battery containing a negative electrode active material particle which includes a silicon compound particle containing a silicon compound (SiOx: 0.5?x?1.6). The silicon compound particle contains a Li compound, at least a part of the silicon compound particle is coated with a carbon material, and at least a part of a surface of the silicon compound particle, a surface of the carbon material, or both of them is coated with a layer containing a compound having a silyl group.

Abstract: A lithium/sulfur electrochemical element (1) comprising: a cathode (2) comprising: i) carbon having a porous structure (5) comprising pores with a mean diameter less than or equal to 6 nm; ii) sulfur having a degree of oxidation between 0 and ?2 in the pores of the carbon; b) an electrolyte comprising: i) at least one organic solvent which is a carbonate; ii) one or more salts, at least one salt being lithium bis(fluorosulfonyl)imide; c) an anode (4) comprising lithium metal or a metallic alloy of lithium. Such an element provides increased safety of use because it limits the quantity of hydrogen sulfide that can be emitted in the event of an electrolyte leak or in the event of exposure of an electrode of the element to water.

Abstract: A negative electrode including a negative electrode active material layer including a negative electrode active material, wherein the negative electrode active material includes a core and a coating layer disposed on the core. The core includes natural graphite and an amorphous carbon layer on the natural graphite, wherein the natural graphite has an average particle diameter, D50, of 10 ?m to 14 ?m.ONH The negative electrode active material includes 1,500 ppm wt % to 2,000 ppm wt % of oxygen, 200 ppm wt % to 300 ppm wt % of nitrogen, and 200 ppm wt % to 300 ppm wt % of hydrogen as measured by an ONH analysis, and the coating layer includes carbon nanofibers.

Abstract: An aspect of the present invention is a nonaqueous electrolyte energy storage device including: a positive electrode having a positive composite layer including a positive active material; a negative electrode having a negative composite layer including a negative active material; and a nonaqueous electrolyte including a nonaqueous solvent, in which the positive active material includes a lithium-transition metal composite oxide that contains nickel as a transition metal and has a layered ?-NaFeO2-type crystal structure, a ratio (N/P) between mass (N) per unit area of the negative active material and mass (P) per unit area of the positive active material is 0.30 or more and 0.

Abstract: With the present invention a carbon fiber aggregate is provided that has an average fiber diameter of 100-1000 nm, and a fiber diameter variation coefficient (CV value) greater than 0.5 and less than or equal to 1.0.

Abstract: A negative electrode active material that includes an active material core that allows for the intercalation and deintercalation of lithium ions. The negative electrode active material also includes a plurality of conductive materials positioned on a surface of the active material core, a plurality of organic linkers each including a hydrophobic group and a polar functional group bonded to the hydrophobic group, and an elastic unit. The elastic unit includes an elastic moiety having two or more binding sites, and a functional group bonded to a binding site of the elastic moiety. The functional group reacts with the polar functional group of the organic linker, and one or more of the plurality of organic linkers are connected to the conductive materials through the hydrophobic groups of the organic linkers.

Abstract: A flexible battery is disclosed in the present invention. One of a first active material layer, an intermediate layer, a second active material layer, a first interface located between the first active material layer and the intermediate layer, and a second interface located between the second active material layer and the intermediate layer includes a first adhesive. The first adhesive includes at least one first linear polymer and at least one first crystallization inhibitor. Therefore, the active material layers, the intermediate layer or the interfaces have sufficient adhesion and flexibility. The electrochemical reaction element would not easy to be cracked or separated after bending, and the ionic and electrical conductivities of the battery is greatly improved.

Abstract: A negative electrode active material for a lithium secondary battery including complex particles including silicon oxide particles doped with a metal of lithium, magnesium, calcium or aluminum, a linear conductive material disposed between the doped silicon oxide particles, and a carbon-based binder that hinds the doped silicon oxide particles and the conductive material together. The carbon-based binder is a result of sintering a carbon-based precursor. A method of preparing the negative electrode active material, a negative electrode and a lithium secondary battery are also provided. The negative electrode active material according to the present disclosure is superior at least in initial efficiency and life characteristics.

Abstract: A method for depositing a metal layer on a component includes applying an electrically conductive coating composition comprising a resin and metal particles on a coating region of the component and partially curing the resin to a gel state to form an electrically conductive coating. The method also includes applying additional metal particles to the partially cured resin in the gel state and depositing, via an electrodeposition process, a metal layer on the electrically conductive coating.

Abstract: Cold sintering of materials includes using a process of combining at least one inorganic compound, e.g., ceramic, in particle form with a solvent that can partially solubilize the inorganic compound to form a mixture; and applying pressure and a low temperature to the mixture to evaporate the solvent and densify the at least one inorganic compound to form sintered materials.

Abstract: A negative electrode active material for a lithium secondary battery, the negative electrode active material including, based on 100 parts by weight of the total negative electrode active material, 5 parts by weight to 20 parts by weight of a first carbon-based particle, 55 parts by weight to 90 parts by weight of a second carbon-based particle, and 1 part by weight to 40 parts by weight of a silicon-based particle, wherein the specific surface area of the first carbon-based particle is 1.5 m2/g to 4.5 m2/g, the specific surface area of the second carbon-based particle is 0.4 m2/g to 1.5 m2/g, and the specific surface area of the first carbon-based particle is greater than the specific surface area of the second carbon-based particle, and capable of solving the problem of lifespan deterioration which may be caused by the use of a silicon-based particle as a negative electrode active material.

Abstract: A separator with improved heat resistance and low resistance as well as Lami Strength that is equal or similar to that of the existing separator by using a predetermined amount of polyvinylpyrrolidone binder polymer relative to a polyvinylidene fluoride-based binder polymer, and a manufacturing method thereof.

Abstract: Provided is a coin-shaped lithium secondary battery including a positive electrode plate which is a lithium complex oxide sintered plate; a negative electrode plate which is a titanium-containing sintered plate; a separator interposed between the positive electrode plate and the negative electrode plate; an electrolytic solution with which the positive electrode plate, the negative electrode, and the separator are impregnated; and an exterior body having a closed space, the closed space accommodating the positive electrode plate, the negative electrode plate, the separator, and the electrolytic solution, the lithium secondary battery having a thickness of 0.7 to 1.6 mm and a diameter of 10 to 20 mm.

Abstract: Provided is an anode particulate for a lithium battery, the particulate comprising a polymer foam material having pores and a single or a plurality of primary particles of an anode active material embedded in or in contact with said polymer foam material, wherein said primary particles of anode active material have a total solid volume Va, and said pores have a total pore volume Vp, and the volume ratio Vp/Va is from 0.1/1.0 to 10/1.

Abstract: Provided is a non-aqueous electrolyte, comprising a solvent, a lithium salt, an additive A and an additive B, the additive A is selected from compound represented by structural formula 1, and the additive B is selected from one or more of compounds represented by structural formula 2 and structural formula 3: R1 is an alkenyl with 2-5 carbon atoms or an alkynyl with 2-5 carbon atoms, R2 is a fluoroalkyl with 1-5 carbon atoms, R3 is an alkyl with 1-4 carbon atoms, an aryl with 6-10 carbon atoms, an alkenyl with 2-5 carbon atoms, an alkynyl with 2-5 carbon atoms or a fluoroalkyl with 1-5 carbon atoms. Meanwhile, the invention also discloses a lithium ion battery comprising the non-aqueous electrolyte. The non-aqueous electrolyte provided by the invention can effectively give consideration to both high and low temperature performances of the battery.

Abstract: Anodes for lithium-ion batteries and methods for their production are provided. Anodes comprise an initial anode made of consolidated anode material particles, and a coating of the initial anode, that comprises a layer of an ionic-conductive polymer which provides an artificial SEI (solid-electrolyte interphase) to facilitate lithium ion transfer through the coating while preventing direct fluid communication with the anode material particles and electrolyte contact thereto. The coating may be configured to keep the anode resistance low while preventing electrolyte decomposition thereupon, enhancing cell stability and cycling lifetime.

Abstract: The present application discloses a negative electrode active material and a method for preparing the same, a secondary battery, and an apparatus including the secondary battery. The negative electrode active material includes a core and a coating layer covering the surface of the core, the core includes artificial graphite, the coating layer includes amorphous carbon, and the particle size uniformity of the negative electrode active material is from 0.25 to 0.45.

Abstract: A negative electrode including: a negative electrode current collector; and a negative electrode active material layer on at least one surface of the negative electrode current collector. The negative electrode is pre-lithiated and the negative electrode active material layer includes a silicon-based material and a carbonaceous material. In addition, a graphene sheet having 2 layers to 15 layers is on the negative electrode active material layer. The negative electrode is advantageous in terms of storage and safety. A lithium secondary battery using the negative electrode shows reduced initial irreversibility, and thus provides increased efficiency.

Abstract: Provided herein is a method of forming a composition by co-processing nanocarbon aggregates and carbon black aggregates, which includes providing nanocarbon aggregates, providing carbon black aggregates, and mixing the nanocarbon aggregates and the carbon black aggregates such that the nanocarbon aggregates disperse into looser aggregates of nanocarbons and carbon black, or individualized nanocarbons dispersed among the carbon black aggregates.

Abstract: Provided are compositions of bundles or clumps of a reaggregated plurality of discrete carbon nanotubes with an additive whereupon the bundles or clumps disaggregate during a fabrication process that uses less than 10,000 ppm of aqueous or non-aqueous solvent. The composition can be mixed further with electroactive material to make electrodes for energy storage or collection devices.

Abstract: The present disclosure generally relates to apparatuses, systems, and methods for separating a target species (e.g., CO2) from a gas mixture (e.g., gas stream) via an electrochemical process.

Abstract: An alkaline electrochemical cell includes a cathode; a gelled anode having an anode active material and an electrolyte; and a separator disposed between the cathode and the anode; wherein the separator includes a non-conductive, porous material having a mean pore size of about 1 micron to about 5 microns, a maximum pore size of about 19 microns, and an air permeability of about 0.5 cc/cm2/s to about 3.8 cc/cm2/s at 125 Pa.

Abstract: The present disclosure provides an anode material having further improved charge/discharge efficiency. The anode material according to the present disclosure includes an anode active material and a first solid electrolyte material. The first solid electrolyte material includes Li, M, and X, and does not include sulfur. M is at least one selected from the group consisting of metalloid elements and metal elements other than Li. X is at least one kind selected from the group consisting of Cl, Br, and I. The anode active material is an active material capable of storing and releasing lithium ions at a potential with respect to lithium of not less than 0.27 V.

Abstract: This positive electrode includes a current collector, an intermediate layer which is formed at least on one surface of the current collector, and a composite material layer which is formed on the intermediate layer. The intermediate layer includes metal compound particles, a conductive material, and a binding material. The metal compound particles comprise at least one selected from a sulfated oxide, hydroxide, or oxide of alkali earth metal or alkali metal.

Abstract: A non-aqueous electrolyte for a lithium-ion battery and a lithium-ion battery. The non-aqueous electrolyte includes an unsaturated phosphate compound and a cyclic unsaturated carboxylic anhydride compound. The unsaturated phosphate compound has a structure represented by structural formula (4). R13, R11 and R12 are each independently selected from a hydrocarbon group having 1 to 5 carbon atoms, and at least one of R13, R11 and R12 is an unsaturated hydrocarbon group having a double bond or a triple bond. The unsaturated cyclic carboxylic anhydride compound having a structure represented by Structural Formula 5. R14 is selected from the group consisting of an alkenylene group having 2 to 4 carbon atoms or a fluorinated alkenylene group having 2 to 4 carbon atoms. By means of the synergistic effect of two compounds, the non-aqueous electrolyte has excellent high-temperature cycling performance and storage performance, and also has lower impedance and good low-temperature performance.

Abstract: A negative electrode slurry composition including (1) clay particles having, a plate-type structure and an average particle diameter (D50) of 10 nm to 2 ?m, (2) carboxymethylcellulose (CMC), (3) a negative electrode active material, and (4) an aqueous solvent, wherein a weight ratio of the carboxymethylcellulose and the clay particles is 9.5:0.5 to 4:6. The negative electrode slurry composition is capable of solving problems due to the deterioration of storage stability and dispersibility of solids in a negative electrode slurry composition having a high solid content.

Abstract: Provided is an anode active material layer for a lithium battery. This layer comprises multiple particulates of an anode active material, wherein at least a particulate is composed of one or a plurality of particles of an anode active material being encapsulated by a thin layer of graphene/elastomer composite having from 0.01% to 50% by weight of graphene sheets dispersed in an elastomeric matrix material, wherein the encapsulating shell (the thin layer of composite) has a thickness from 1 nm to 10 ?m and the graphene/elastomer composite has a lithium ion conductivity from 10?7 S/cm to 10?2 S/cm and an electrical conductivity from 10?7 S/cm to 100 S/cm when measured at room temperature. The anode active material is preferably selected from Si, Ge, Sn, SnO2, SiOx, Co3O4, Mn3O4, etc., which has a specific capacity of lithium storage greater than 372 mAh/g (the theoretical lithium storage limit of graphite).

Abstract: A conductive material, and a method for preparing the same are provided. The conductive material has a structure where a plurality of graphene sheets are interconnected, wherein an oxygen content is 1 wt % or higher based on the total weight of the conductive material, and a D/G peak ratio is 2.0 or less when the Raman spectrum is measured.

Abstract: A method for manufacturing a cathode active material for a lithium ion secondary battery comprises mixing lithium carbonate and a compound containing a metal element other than Li, and a firing step. The firing step includes at last two stages of controlling firing to different temperatures. The at least two stages include controlling a firing temperature to a lower temperature and controlling a firing temperature to a higher temperature. The firing is controlled is such that the former stage has a lower oxygen concentration in an atmosphere than the latter stage. The firing apparatus comprises at least two firing furnaces of controlling firing temperatures to different temperatures. The at least two firing furnaces include controlling a firing temperature to a lower temperature and controlling firing temperature to a higher temperature. The latter firing furnace has a gas outlet being in communication with the former firing furnace.

Abstract: A cathode configured to use oxygen as a cathode active material, the cathode including: a porous film, wherein the porous film includes a metal oxide, and wherein a surface of the porous film has root mean square (RMS) roughness (Rq) of about 0.01 micrometer to about 1 micrometer, and a porosity of the porous film is about 50 volume percent to about 99 volume percent, based on a total volume of the porous film.

Abstract: A non-aqueous electrolyte secondary battery includes an electrode current collector, an intermediate layer, and an electrode active material layer. The intermediate layer is interposed between the electrode current collector and the electrode active material layer. The intermediate layer contains a metal-covered microcapsule. The metal-covered microcapsule includes a microcapsule and a metal film. The microcapsule includes a core and a shell. The shell surrounds the core. The core includes a volatile material. The shell includes a thermoplastic resin material. The metal film covers at least part of an outer surface of the microcapsule.

Abstract: A negative active material for a rechargeable lithium battery includes a carbon-based active material including highly crystalline natural graphite and artificial graphite. The carbon-based active material has a peak intensity ratio (P2/P4) of about 0.3 to about 0.4, wherein P2 refers to the 101 peak of a rhombohedral crystal grain and P4 refers to the 101 peak of a hexagonal crystal grain, as measured by X-ray diffraction.

Abstract: There is provided a positive electrode for an alkaline secondary battery and an alkaline secondary battery having good output properties and cycle life. To that end, a positive electrode (10) for alkaline secondary battery is obtained by laminating a flexible metal substrate (11) having flexibility; a primer layer (12) having conductivity provided on one or both surfaces of the substrate (11); and a positive electrode composite material layer (13) provided on the primer layer (12) and containing a positive electrode active material, a binder resin, and a first conductive material.

Abstract: The purpose of the present invention is to provide an electrode active material layer exhibiting excellent mechanical strength. This electrode material for a non-aqueous electrolyte secondary battery includes at least an electrode active material, a carbon-based conductive auxiliary agent, and a binder. The carbon-based conductive auxiliary agent has a linear structure, and includes ultra-fine fibrous carbon having an average fibre diameter of more than 200 nm but not more than 900 nm. The electrode material configures an electrode active material layer in which the maximum tensile strength (?M) in a planar direction and the tensile strength (?T) in an in-plane direction orthogonal to the maximum tensile strength (?M) satisfy relational expression (a), namely ?M/?T?1.6.

Abstract: A negative active material, a lithium battery including the negative active material, and a method of preparing the negative active material. The negative active material includes: a core particle including a silicon based alloy; carbon nanoparticles disposed on a surface of the core particle; and an amorphous carbonaceous coating layer disposed on at least a portion of a surface of the core particle. The negative active material may improve the lifetime characteristics of the lithium batteries.

Abstract: A binder solution for manufacturing silicon-based anodes useful for lithium-ion electrochemical cells is described herein. The binder solution comprises a poly(carboxylic acid) binder dissolved in a mixed solvent system comprising an amide solvent of Formula I, as described herein, and a second solvent which can be water and/or an organic solvent. The binder preferably comprises poly(acrylic acid). The mixed solvent system comprises about 10 to about 99 vol % of the amide solvent of Formula I. The binder solution is utilized as a solvent for a slurry of silicon-containing particles for preparing a silicon-containing electrode. The slurries made with the mixed solvent systems have higher viscosity and are more stable than slurries containing the same concentrations of silicon particle, carbon particles, and binder in water as the sole solvent.

Abstract: Methods of preparing Si-based anode slurries and anode made thereof are provided. Methods comprise coating silicon particles within a size range of 300-700 nm by silver and/or tin particles within a size range of 20-500 nm, mixing the coated silicon particles with conductive additives and binders in a solvent to form anode slurry, and preparing an anode from the anode slurry. Alternatively or complementarily, silicon particles may be milled in an organic solvent, and, in the same organic solvent, coating agent(s), conductive additive(s) and binder(s) may be added to the milled silicon particles—to form the Si-based anode slurry. Alternatively or complementarily, milled silicon particles may be mixed, in a first organic solvent, with coating agent(s), conductive additive(s) and binder(s)—to form the Si-based anode slurry. Disclosed methods simplify the anode production process and provide equivalent or superior anodes.

Abstract: A method for preparing a lithium electrode, and in particular, a lithium electrode having a thin and uniform thickness may be prepared by forming a protective layer capable of protecting lithium metal on a substrate first, depositing lithium metal on the protective layer, and then transferring the deposited lithium metal layer on a current collector, for instance a Cu current collector, when preparing a lithium electrode, and a lithium secondary battery using the lithium electrode prepared as above may have enhanced energy density.

Abstract: Provided are a positive electrode active material with which a secondary battery having high charging and discharging capacities and an excellent cycle characteristic can be obtained, and a method for producing the same. A positive electrode active material for a nonaqueous electrolyte secondary battery includes a lithium-metal composite oxide represented by a general formula: LiaNixCoyMnzMtO2+? and containing a secondary particle formed of a plurality of flocculated primary particles. A void ratio obtained from an image analysis result of a cross section of the secondary particle, the image thereof being obtained by a scanning electron microscope, is at least 5% and up to 50% in a first area that is from a central part of the secondary particle to one half of a radius of the secondary particle, and is up to 1.5% in a second area that is outside the first area.

Abstract: A production method for a fuel cell separator comprises the steps of providing a powder blend of at least 70% carbon powder, 0.5-5% PTFE, PolyTetraFluoroEthylene, and 0-20% thermoplastic polymer different from PTFE. The powder is sedimented as slurry in a suspension, excess liquid removed from the slurry, and the remaining slurry press-moulded into a shape of a separator plate, for example for use in a fuel cell stack.

Abstract: An object of this disclosure is to provide a lithium ion battery in which generation of heat can be suitably suppressed. Provided is a lithium ion battery including a positive electrode and a negative electrode. The positive electrode includes a positive electrode collector, a positive electrode active material layer, and an insulating layer provided on another part of the surface of the positive electrode collector, so as to be adjacent to the positive electrode active material layer. The insulating layer contains an inorganic filler and a binder. At least part of the surface of the inorganic filler is covered with LPO.

Abstract: The present invention is directed to a lithium ion battery electrode slurry composition comprising: (a) an electrochemically active material capable of lithium intercalation and deintercalation; (b) a binder dispersed in an aqueous or organic medium and comprising a reaction product of a reaction mixture comprising one or more epoxy functional polymer(s) and one or more acid functional acrylic polymer(s); and (c) an electrically conductive agent. The present invention also provides an electrode comprising: (a) an electrical current collector; and (b) a cured film formed on the electrical current collector. The cured film is deposited from the slurry composition described above. Electrical storage devices prepared from the electrode are also provided.

Abstract: The present invention provides a positive electrode active material for a secondary battery which includes a lithium transition metal oxide, wherein the positive electrode active material has three peaks in a differential graph (ERC curve) obtained by differentiating a pH value against an amount of acid (HCl) added, which is obtained by pH titration of 10 g of the lithium transition metal oxide using 0.5 M HCl, wherein a y-axis (dpH/dml) value of a first peak at the smallest x-axis value among the three peaks is ?1.0 or less.

Abstract: Provided is provided a lithium metal battery which includes a composite solid electrolyte membrane interposed between a lithium metal negative electrode and a positive electrode, wherein the composite solid electrolyte membrane includes: a phase transformation layer containing a plasticizer and a lithium salt; a porous polymer sheet layer; and a solid polymer electrolyte layer, the phase transformation layer, the porous polymer sheet layer and the solid polymer electrolyte layer stacked successively, and the phase transformation layer is disposed in such a manner that it faces the lithium metal negative electrode. The lithium metal battery shows reduced resistance at the interface with an electrode and increased ion conductivity, has improved safety, and provides improved energy density of an electrode.

Abstract: Provided is a slurry composition for a positive electrode that has excellent dispersibility and enables production of a secondary battery that can display good output characteristics. The slurry composition for a non-aqueous secondary battery positive electrode contains a positive electrode active material, a conductive material, a particulate polymer, and a polyhydric alcohol polycondensate. The positive electrode active material includes an iron-containing compound. The particulate polymer includes a hydroxyl group-containing monomer unit.

Abstract: The present application provides an electrode, an electrochemical device, and an electronic device. The electrode includes: a current collector; a first active material layer including a first active material; and a second active material layer including 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 a surface of the current collector, and a particle size of 90% accumulative volume of the first active material is less than 40 ?m. The active material layer is used in the present application to ensure that the electrochemical device and the electronic device do not generate a short circuit when pressed by an external force, thereby ensuring the mechanical safety performance of the electrochemical device and the electronic device.

Abstract: A battery structure includes a plurality of batteries each made of lithium-ion secondary battery; and a plurality of arrangement portions in which the plurality of batteries are arranged. The plurality of arrangement portions are divided into two groups of: a upper heat transfer group having heat transfer orders higher than a center value of the heat transfer orders, where the heat transfer orders are respective amount of heat transfer from the batteries being ranked in descending order; and a lower heat transfer group having the heat transfer orders lower than the center value. A battery among the plurality of batteries showing the highest value of a lithium deposition tolerance which represents a degree of lithium being unlikely to deposit during charge/discharge operation, is disposed in a high tolerance arrangement portion in the plurality of arrangement portions, the high tolerance arrangement portion belonging to the upper heat transfer group.

Abstract: Provided herein are high performance electrodes, electrode materials comprising a plurality of active electrode material-containing particles secured within one or more graphenic web, and precursors thereof. Also provided herein are processes of generating the same by an electrospray process.