Abstract: An electrode material for a lithium ion secondary battery of the present invention is an electrode material for a lithium ion secondary battery including an electrode active material and a carbonaceous film that coats a surface of the electrode active material, in which a hydroxy group and a group which is at least one selected from a carboxyl group, a nitro group, and a sulfo group have been introduced to an outermost surface of the carbonaceous film, a ratio of a total count number of the group which is at least one selected from the carboxyl group, the nitro group, and the sulfo group to a count number of the hydroxy group is 0.001 or more and 10.000 or less when a surface of the carbonaceous film is analyzed through time-of-flight secondary ion mass spectrometry to obtain the ratio, a coating ratio of the carbonaceous film is set to 40% or more and 90% or less, and the carbonaceous film has at least one through-hole per 100 square nanometers.

Abstract: A method for manufacturing a broadband fluorescence amplification assembly comprising the steps of providing a vertically aligned carbon nanotube (“VACNT”) substrate that has been treated with a plasma and at least partially coated with a metal coating and a support structure, and supporting the VACNT substrate by the support structure. The support structure can include one of quartz or glass. The method can also include the steps of cleaning the support structure with an alcohol solution and/or exposing the support structure to one of a surface cleaning plasma or ozone. The method can further comprise the step of adhering the VACNT substrate to the support structure, wherein the step of adhering can include applying an adhesive material to at least a portion of the support structure. Additionally, the method can include the step of treating the VACNT substrate and the support structure with the plasma.

Abstract: Systems and methods are provided for high volume roll-to-roll transfer lamination of electrodes for silicon-dominant anode cells.

Abstract: A conformal graphene-encapsulated battery electrode material is formed by: (1) coating a battery electrode material with a metal catalyst to form a metal catalyst-coated battery electrode material; (2) growing graphene on the metal catalyst-coated battery electrode material to form a graphene cage encapsulating the metal catalyst-coated battery electrode material; and (3) at least partially removing the metal catalyst to form a void inside the graphene cage.

Abstract: A method of making a stretchable composite electrode is provided. An elastic substrate is pre-stretched along a first direction and a second direction, to obtain a pre-stretched elastic substrate. A carbon nanotube active material composite layer is laid on a surface of the pre-stretched elastic substrate. And the pre-stretching of the elastic substrate is removed, and a plurality of wrinkles is formed on a surface of the carbon nanotube active material composite layer.

Abstract: A negative electrode active material particle and a method for preparing the same are provided. The negative electrode active material particle includes SiOx (0<x?2) and Li2Si2O5, and includes less than 2 wt % of Li2SiO3 and Li4SiO4.

Abstract: An anode material for a lithium ion secondary battery that includes a carbon material having an average interlayer spacing d002 as determined by X-ray diffraction of from 0.335 nm to 0.340 nm, a volume average particle diameter (50% D) of from 1 ?m to 40 ?m, a maximum particle diameter Dmax of 74 ?m or less, and at least two exothermic peaks within a temperature range of from 300° C. to 1000° C. in a differential thermal analysis in an air stream.

Abstract: An all-solid-state secondary battery including: a positive electrode layer; a negative electrode layer; and a solid electrolyte layer between the positive electrode layer and the negative electrode layer, wherein the positive electrode layer includes a sulfur-containing positive electrode active material, a halogen-containing sulfide solid electrolyte, and a conductive carbon material, and wherein the sulfur-containing positive electrode active material includes elemental sulfur and a transition metal disulfide.

Abstract: The present invention related to a method for preparing carbon nanospheres modified current collector and its application in metal secondary battery. The said method includes the preparation of carbon nanospheres modified current collector by chemical vapor deposition process and the process for loading metal into the modified current collector as an anode. Comparing with the bare Ni, the said anode with modified current collector demonstrates enhanced stripping/plating efficiency, well confinement of Li dendrite, stable long lifespan and strengthen safety.

Abstract: Systems and methods for multiple carbon precursors for enhanced battery electrode robustness may include an electrode having an active material on a current collector, the active material including two or more carbon precursor materials, and an additive, wherein the carbon precursor materials have different pyrolysis temperatures. A battery may include the electrode. The carbon precursor materials may include polyimide (PI) and polyamide-imide (PAI). The active material may be pyrolyzed at a temperature such that a first carbon precursor material is partially pyrolyzed and a second carbon precursor material is completely pyrolyzed. The carbon precursor materials may include two or more of PI, PAI, carboxymethyl cellulose (CMC), styrene-butadiene rubber (SBR), polyacrylonitrile (PAN), and sodium alginate. The active material may include silicon constituting at least 50% of weight of a formed anode after pyrolysis.

Abstract: Provided are a porous silicon-carbon composite, which includes a core including a plurality of active particles, a conductive material formed on at least a portion of surfaces of the active particles, first pores, and second pores, and a first shell layer which is coated on the core and includes graphene, wherein the active particles include a plurality of silicon particles, silicon oxide particles, or a combination thereof, the first pores are present in the core and are formed by agglomeration of the plurality of active particles, and the second pores are irregularly dispersed and present in the core, has an average particle diameter smaller than an average particle diameter of the active particles, and are spherical, a method of manufacturing the same, and a negative electrode and a lithium secondary battery including the porous silicon-carbon composite.

Abstract: An anode component for a lithium-ion cell is formed using an atmospheric plasma deposition. The anode component has an anode material layer comprising high lithium-intercalating capacity silicon particles as active anode material in pores of a bonded layer of metal particles. The atmospheric plasma deposition process deposits metal particles and smaller silicon-containing particles concurrently or sequentially on an anode current collector substrate or polymeric separator substrate for the lithium-ion cell. The anode material layer may optionally be lithiated in the atmospheric plasma deposition process. The plasma deposition process is used to form a porous electrode layer on the substrate consisting essentially of a porous metal matrix containing smaller particles of the electrode material particles supported and carried in the pores of the matrix. When the anode component is assembled into a cell, remaining pore capacity is filled with a lithium-ion containing liquid electrolyte solution.

Abstract: An anode for lithium secondary battery includes a current collector and an anode active material layer including an anode active material and being formed on the current collector. The anode active material includes a core containing an artificial graphite and a shell formed on a surface of the core, the shell containing an amorphous carbon. An average of a Raman R value of the anode active material layer is in a range from 0.5 to 0.65, and a standard deviation of the Raman R value is less than 0.22. The Raman R value is defined as a ratio (ID/IG) of a D band intensity (ID) relative to a G band intensity (IG), and the D band and the G band are obtained from a Raman spectrum of the anode active material layer.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a pristine seperator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of graphene sheets and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: Composites of silicon and various porous scaffold materials, such as carbon material comprising micro-, meso- and/or macropores, and methods for manufacturing the same are provided. The compositions find utility in various applications, including electrical energy storage electrodes and devices comprising the same.

Abstract: Nanoporous carbon provides a binderless, three-dimensional form of graphene as an anode material for lithium-ion batteries.

Abstract: A method for producing a negative electrode active material for lithium ion secondary batteries containing a silicon-titanium oxide composite, which is characterized in that: the silicon-titanium oxide composite contained in the negative electrode active material for lithium ion secondary batteries is obtained by coating a silicon oxide by a titanium oxide; the silicon oxide is obtained by subjecting a polymerized silsesquioxane (PSQ), which has a structure of formula (1) and is obtained by subjecting a silicon compound to hydrolysis and a condensation polymerization reaction, to a heat treatment in an inert gas atmosphere, and is represented by general formula SiOxCyHz (wherein 0.5<x<1.8, 0?y<5 and 0?z<0.4); and after coating the silicon oxide with a titanium oxide, the resulting product is subjected to a heat treatment in a reducing gas atmosphere.

Abstract: One aspect of the invention relates to an anode material or lithium ion batteries that is based on silicon particles, one or more binders, optionally graphite, optionally one or more additional electroconductive components, and optionally one or more additives, characterized in that the silicon particles are not aggregated and have a volume-weighted particle size distribution between the diameter percentiles d10?0.2 ?m and d90?20.0 ?mas well as a width d90?d10?15 ?m.

Abstract: The present disclosure relates to an anode material having porous core-shell structure, the anode material includes a core formed of at least one carbonaceous material selected from a group consisting of graphite, hard carbon and soft carbon, and a carbon shell coated on a surface of the core. The carbon shell contains amorphous carbon, cobalt element and tin element, and has a porous structure having a porosity greater than 10%. The present disclosure further relates to a method of preparing the anode material having porous core-shell structure, and a battery of which a negative electrode contains the anode material having porous core-shell structure.

Abstract: When the particle size of a silicon material used for a negative electrode active material are small, a large surface area thereof easily causes a side reaction between the active material and an electrolyte solvent to occur, and the cycle characteristics of a lithium ion secondary battery decrease. In order to improve the cycle characteristics, a lithium ion secondary battery according to the present invention is characterized in comprising a negative electrode comprising a material comprising silicon as a constituent element and a polyacrylic acid, and an electrolyte solution comprising a fluoroethylene carbonate, wherein the 50% particle size of the material comprising silicon as a constituent element is 2 ?m or less.

Abstract: A graphite-based negative electrode active material including a first graphite particle being spheroidized and a second graphite particle having a roundness lower than the roundness of the first graphite particle, wherein the content of the second graphite particle based on the sum of the first graphite particle and the second graphite particle is in the range of 1 to 30% by mass, the ratio of a median particle diameter (D50) to a particle diameter at 5 cumulative % (D5), D50/D5, in a cumulative distribution of the first graphite particle is smaller than the ratio of a median particle diameter (D50) to a particle diameter at 5 cumulative % (D5), D50/D5, in a cumulative distribution of the second graphite particle, and the tap density in saturation of the particle mixture of the first graphite particle and the second graphite particle is higher than both the tap density in saturation of the first graphite particle and the tap density in saturation of the second graphite particle.

Abstract: A lithium super-battery cell comprising: (a) A cathode comprising a cathode active material having a surface area to capture or store lithium thereon, wherein the cathode active material is not a functionalized material and does not bear a functional group; (b) An anode comprising an anode current collector; (c) A porous separator disposed between the two electrodes; (d) A lithium-containing electrolyte in physical contact with the two electrodes, wherein the cathode active material has a specific surface area of no less than 100 m2/g being in direct physical contact with the electrolyte to receive lithium ions therefrom or to provide lithium ions thereto; and (e) A lithium source implemented at one or both of the two electrodes prior to a first charge or a first discharge cycle of the cell. This new generation of energy storage device exhibits the best properties of both the lithium ion battery and the supercapacitor.

Abstract: A lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises carbon nanotube structure and a plurality of MoP2 nanoparticles. The carbon nanotube structure defines a plurality of micropores. The plurality of MoP2 nanoparticles is located on surface of the carbon nanotube structure and filled in micropores in the carbon nanotube structure.

Abstract: An objet of the invention is to provide a non-aqueous electrolyte secondary battery superior in input-output characteristics even at a low temperature. To achieve the object, hybrid particles (carbon material) satisfying certain conditions, and composed of graphite particles and carbon particles with a primary particle size from 3 nm to 500 nm, preferably as well as amorphous carbon, are used as a negative electrode active material for a non-aqueous electrolyte secondary battery, so that the input-output characteristics of a non-aqueous electrolyte secondary battery at a low temperature can be improved remarkably.

Abstract: The present application is generally directed to composites comprising a hard carbon material and an electrochemical modifier. The composite materials find utility in any number of electrical devices, for example, in lithium ion batteries. Methods for making the disclosed composite materials are also disclosed.

Abstract: A lithium-sulfur battery separator includes a pristine separator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: Embodiments of the invention are directed to systems and methods for purifying graphite particles. Graphite flakes can be milled, and then separated into groups with different nominal sizes. The different groups of particles are purified according to optimized purification processes. Groups of purified particles with narrow size distributions are created using embodiments of the invention.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a pristine separator (PSL) and a functional layer (FL). The FL is located on a surface of the PSL. The FL includes a plurality of carbon nanotubes and a plurality of MoP2 nanoparticles uniformly mixed with each other.

Abstract: Process for producing an alkali metal-sulfur battery, comprising: (a) Preparing a first conductive porous structure; (b) Preparing a second conductive porous structure; (c) Injecting or impregnating a first suspension into pores of the first conductive porous structure to form an anode electrode, wherein the first suspension contains an anode active material, an optional conductive additive, and a first electrolyte; (d) Injecting or impregnating a second suspension into pores of the second conductive porous structure to form a cathode electrode, wherein the second suspension contains a cathode active material (selected from sulfur, lithium polysulfide, sodium polysulfide, sulfur-polymer composite, organo-sulfide, sulfur-carbon composite, sulfur-graphene composite, or a combination thereof), an optional conductive additive, and a second electrolyte; and (e) Assembling the anode electrode, a separator, and a cathode electrode into the battery.

Abstract: A negative electrode active material for non-aqueous electrolyte secondary batteries which has particles of negative electrode active material, the particles of negative electrode active material containing a silicon compound (SiOx: 0.5?x?1.6) that contains a Li compound, including a carbon coating on at least a part of a surface of the silicon compound and a salt coating containing one or more kinds of a metal silicate containing a metal element other than a lithium element and a metal salt containing a metal element other than the lithium element on a part of a surface of the silicon compound or a surface of the carbon coating or both of these. Thus, the negative electrode active material for non-aqueous electrolyte secondary batteries having high stability to an aqueous slurry, high capacity and excellent cycle characteristics and initial efficiency may be provided.

Abstract: A lithium-sulfur battery includes a cathode, an anode, a lithium-sulfur battery separator and an electrolyte. The lithium-sulfur battery separator includes a PSL and a FL. The FL is located on a surface of the PSL. The FL comprises carbon nanotube structure and a plurality of MoP2 nanoparticles. The carbon nanotube structure defines a plurality of micropores. The plurality of MoP2 nanoparticles is located on surface of the carbon nanotube structure and filled in micropores in the carbon nanotube structure.

Abstract: The present invention relates to a negative electrode material for nonaqueous electrolyte secondary batteries, which is composed of a silicon composite body that has a structure wherein microcrystals or fine particles of silicon are dispersed in a substance having a composition different from that of the microcrystals or fine particles, said silicon composite body having a crystallite size of the microcrystals or fine particles of 8.0 nm or less as calculated using Scherrer's equation on the basis of the half width of the diffraction peak belonging to Si(220) in an X-ray diffraction. The present invention is able to provide a negative electrode material for nonaqueous electrolyte secondary batteries, which has excellent coulombic efficiency, and a nonaqueous electrolyte secondary battery.

Abstract: A negative electrode material for a lithium ion secondary battery including carbon over a part or a whole of a surface of an oxide of silicon, in which the content of the carbon is from 0.5 mass-% to less than 5 mass-%.

Abstract: To provide a negative electrode for a lithium ion battery in which a volume change of a silicon-based negative electrode active material due to charging and discharging is small, and a production method therefor. Provided is a method for producing a negative electrode for a lithium ion battery, the method including a step of forming a coating film on a current collector or a separator by using a slurry containing a negative electrode active material composition, which contains a silicon-based negative electrode active material and a carbon-based negative electrode active material, and a dispersion medium, in which the method further includes a step of doping the silicon-based negative electrode active material with lithium ions and a step of doping the carbon-based negative electrode active material with lithium ions before or after the step of forming the coating film and before assembling a lithium ion battery, and the method does not substantially include a step of drying the coating film.

Abstract: Systems and methods for thermal gradient during electrode pyrolysis may include fabricating the battery electrode by pyrolyzing an active material on a metal current collector, wherein the active material comprises silicon particles in a binder material, the binder material being pyrolyzed more than 75% at an outer surface and less than 50% at an inner surface in contact with the current collector. The active material may be pyrolyzed by electromagnetic radiation, which may be provided by one or more lasers, which may include one or more CO2 lasers. The electromagnetic radiation may be provided by one or more infrared lamps. An outer edge of the current collector may be gripped using a thermal transfer block that removes heat from the current collector during pyrolysis of the active material and subsequent cool down. Heat transfer plates may be placed on or adjacent to the active material during pyrolysis.

Abstract: Provided is a positive active material for a nonaqueous electrolyte secondary battery which includes a lithium transition metal composite oxide. A molar ratio (Li/Me) of Li and a transition metal (Me) that form the lithium transition metal composite oxide is more than 1. The transition metal (Me) includes Mn, Ni and Co. The lithium transition metal composite oxide has an ?-NaFeO2-type crystal structure, an X-ray diffraction pattern attributable to a space group R3-m, and a full width at half maximum (FWHM (104)) for the diffraction peak of the (104) plane at a Miller index hkl in X-ray diffraction measurement using a CuK? ray of 0.21° or more and 0.55° or less. A ratio (FWHM (003)/FWHM (104)) of a full width at half maximum for the diffraction peak of the (003) plane and the full width at half maximum for the diffraction peak of the (104) plane at the Miller index hkl is 0.72 or less. Particles of the lithium transition metal composite oxide have a peak differential pore volume of 0.33 mm3/(g·nm) or less.

Abstract: A positive electrode active material includes secondary particles obtained by aggregation of a plurality of primary particles. The primary particles include, core particles including a lithium composite oxide, and a layer that is provided on surfaces of the core particles and includes a lithium composite oxide. The lithium composite oxide included in the core particles and the lithium composite oxide included in the layer have the same composition or almost the same composition, and crystallinity of the lithium composite oxide included in the layer is lower than crystallinity of the lithium composite oxide included in the core particles.

Abstract: The present invention provides a lithium-sulfur thermal battery including: a positive electrode including sulfur (S8) or a sulfur compound, and a solid electrolyte including a lithium salt and a polymer having a melting point lower than a melting point of a negative electrode; a lithium metal negative electrode or lithium alloy; a solid electrolyte membrane disposed between the positive electrode and the negative electrode and including a lithium salt and a polymer having a melting point lower than a melting point of the lithium metal negative electrode or lithium alloy; and a heater configured to provide heat so that the polymer is melted.

Abstract: The disclosure relates to a negative electrode plate and a secondary battery comprising the same. Specifically, the disclosure provides a negative electrode plate comprising a negative electrode current collector and a negative electrode layer coated on at least one surface of the negative electrode current collector, the negative electrode layer comprising a negative electrode active material, wherein the negative electrode active material comprises graphite, and the negative electrode layer meets: 4×L×VOI?¼×Dn10?25, wherein L represents the thickness of single-side negative electrode layer on the negative electrode current collector in millimeter; Dn10 represents the particle diameter corresponding to 10% of the number distribution of particles of the negative electrode active material in micrometer; VOI represents the orientation index of the negative electrode layer.

Abstract: The present invention provides an anode slurry for a secondary battery and an anode comprising the same, in which the dispersibility of an anode active material is improved by increasing the adsorption amount of CMC with respect to the anode active material by adjusting the degree of substitution or physical properties such as molecular weight, and a CMC blend amount is reduced so as to increase the slurry solid content and reduce the resistance of a battery.

Abstract: Disclosed here is a method for producing a graphene macro-assembly (GMA)-fullerene composite, comprising providing a GMA comprising a three-dimensional network of graphene sheets crosslinked by covalent carbon bonds, and incorporating at least 20 wt. % of at least one fullerene compound into the GMA based on the initial weight of the GMA to obtain a GMA-fullerene composite. Also described are a GMA-fullerene composite produced, an electrode comprising the GMA-fullerene composite, and a supercapacitor comprising the electrode and optionally an organic or ionic liquid electrolyte in contact with the electrode.

Abstract: The present invention relates to a lithium manganese composite oxide having a metal-containing compound film and a carbon coating, in which at least a part of a surface of the lithium manganese composite oxide represented by Formula (1) is coated with the metal-containing compound film, and at least a part of the surface thereof is further coated with the carbon coating. The present invention can provide a positive electrode material capable of improving the discharge characteristics and the capacity retention rate after cycles of lithium ion secondary batteries. Li1+x(FeyNizMn1?y?z)1?xO2??(1), where 0<x<?, 0?y, 0?z<0.5, and y+z<1.

Abstract: A scalable approach for the synthesis of black phosphorus (BP) material thin films over large areas is described. A red phosphorus (RP) material thin film may be deposited on a substrate followed by conversion to a BP material thin film using high-pressure alone or high pressure and high temperature. A thin-film of dielectric material such as hexagonal boron nitride (hBN) can be formed on a RP material film before the conversion is performed to improve the crystalline quality and stability of the converted BP material. Surprisingly, an atomically sharp and defect-free interface can be formed between the converted BP material and hBN. The BP material has high crystalline uniformity and can be used to fabricate thin-film transistors and optoelectronic devices such as infrared photodetectors.

Abstract: A silicon anode material for an electrochemical cell that cycles lithium and methods of formation relating thereto are provided. The silicon anode material comprises a plurality of carbon-encased silicon clusters, where each carbon-encased silicon cluster includes a volume of silicon nanoparticles encased in a carbon shell having an interior volume greater than the volume of the silicon nanoparticles. The method of making the silicon anode material includes forming a plurality of precursor clusters, where each precursor silicon-based cluster comprises a volume of SiOx nanoparticles (x?2). The method further includes carbon coating each of the precursor clusters to form a plurality of carbon-coated SiOx clusters; and reducing the SiOx nanoparticles in each of the carbon-coated SiOx clusters to form the silicon anode material.

Abstract: An energy storage device having sufficient energy density and sufficient power is provided. In this embodiment, an energy storage device that includes a negative electrode containing an active material layer including an active material is provided. The active material layer includes particulate graphite as the active material. A particle diameter frequency distribution of the graphite includes a first peak and a second peak which appears in a region where a particle diameter is larger than a particle diameter of the first peak, the particle diameter of the first peak is equal to or less than 10 ?m and the particle diameter of the second peak is more than 10 ?m. The active material layer further includes a particulate high hardness active material which has higher hardness than the graphite.

Abstract: A porous silicon composite cluster comprising: a porous core comprising a porous silicon composite secondary particle, wherein the silicon composite secondary particle comprises an aggregate of two or more silicon composite primary particles, and the silicon composite primary particles each comprise silicon, a silicon oxide of the Formula SiOx, wherein 0<x<2, disposed on the silicon, and a first graphene disposed on the silicon oxide; and a shell disposed on and surrounding the core, the shell comprising a second graphene.

Abstract: The invention relates to the field of storing electrical energy in secondary lithium batteries of the Li-ion type. More precisely, the invention relates to an electrode material for a Li-ion battery, to the method for the production thereof, and to the use of same in a Li-ion battery. The invention also relates to Li-ion batteries produced using said electrode material.

Abstract: The present invention is directed to an anode for a lithium-ion battery and a method of manufacturing the same. The anode is manufactured from a material composed of Si and C known as SBA-15/C having a porous structure of mesopores interconnected by micropores, wherein carbon nanofibers occupy the pore space of the porous structure. The anode has improved conductivity properties and allows to mitigate the drawbacks linked to the volumetric expansion of the anode during the operation of a lithium-ion battery.

Abstract: A miniaturized electrochemical cell and a method for making it are provided. The method includes preparing at least one inner electrode of an electron conducting or semi-conducting material M1; providing a hollow support made of an electrically insulating material M6 and having at least one internal hollow channel; depositing on the external surface of the support a layer of an electrically conducting material M2; forming a template of colloidal particles of an electrically insulating material M3, on the M2 layer; depositing a layer of an electrically conducting material M4 on the M2 layer; depositing a layer L1 of an electron conducting or semi-conducting material M5 on the M4 layer, introducing the at least one inner electrode into the at least one internal hollow channel of the obtained structure; stabilizing the structure at its two open ends with an electrically insulating material M7; and removing M2, M3, M4 and M6 materials.

Abstract: The present invention provides an anode material for a lithium-ion battery comprising a carbon particle having a particle size of 5 ?m to 30 ?m, and including defective portions on a surface of the carbon particle, the defective portions being holes or pores formed by anodic oxidation of the carbon particle.