Abstract: Provided are: a negative electrode material for nonaqueous secondary batteries, which can yield a high-capacity nonaqueous secondary battery having excellent discharge rate characteristics; and a negative electrode for nonaqueous secondary batteries and a nonaqueous secondary battery. Also provided is a nonaqueous secondary battery having excellent charge-discharge efficiency. The negative electrode material for nonaqueous secondary batteries includes carbonaceous particles (A) and silicon oxide particles (B), and satisfies the followings: a) the average particle size (50% cumulative particle size from the smaller particle side; d50) is 3 ?m to 30 ?m, and the 10% cumulative particle size from the smaller particle side (d10) is 0.1 ?m to 10 ?m; b) the ratio (R1=d90/d10) between the 90% cumulative particle size from the smaller particle side (d90) and the d10 is 3 to 20; and c) the ratio (R2=d50/d10) between the d50 and the d10 is 1.7 to 5.

Abstract: A solid electrolyte material according to the present disclosure is represented by the chemical formula Li6?4b+ab(Zr1?aMa)bX6 (I). M denotes at least one element selected from the group consisting of Al, Ga, Bi, Sc, Sm, and Sb, X denotes at least one halogen element, and the two mathematical formulae 0<a<1 and 0<b<1.5 are satisfied.

Abstract: A power storage cell comprises an electrode assembly, a collector plate that has the first electrode sheet connected thereto, and a laminate film, wherein the collector plate has a peripheral edge portion including an inner side located closer to the electrode assembly and an outer side located on a side opposite to the electrode assembly with respect to the inner side, the collector plate is provided with a welding portion and an adhesive portion, and when a direction from the inner side toward the outer side is defined as a first direction and a direction intersecting the first direction is defined as a second direction, the welding portion and the adhesive portion are aligned in the second direction.

Abstract: Provided is a fluoride ion secondary battery having high charging and discharging efficiency at room temperature. The fluoride ion secondary battery includes a positive electrode material layer including Ag; a negative electrode material layer including at least one of CeF3 and PbF2; and a solid electrolyte layer including LaF3 and disposed between the positive electrode material layer and the negative electrode material layer. The fluoride ion secondary battery may further include a negative electrode current collector layer disposed on an outer side of the negative electrode material layer. The negative electrode current collector layer may include carbon when the negative electrode material layer includes CeF3 or may include a Pb foil when the negative electrode material layer includes PbF2.

Abstract: A battery cells that include sulfide cathodes are described with examples being suitable for operation at elevated temperatures. Also described are methods of making and using these battery cells.

Abstract: A resin molding has a first surface and a second surface, wherein the second surface includes a rib, and wherein the first surface includes a glossy portion and a non-glossy portion.

Abstract: A Si-based negative electrode active material that is capable of improving cycle characteristics, reducing or eliminating a plateau region in the discharge profile, and further improving high-rate characteristics. The Si-based negative electrode active material contains Si and a compound containing Si and a semimetal/metal element M, wherein the content of Si in the negative electrode active material is more than 50 wt %; the content of oxygen atoms (O) is less than 30 wt %; the content of the semimetal/metal element M is more than 10 wt % and less than 50 wt %, wherein in an X-ray diffraction pattern as measured by a powder X-ray diffraction (XRD) device using Cu-K?1 rays, the full width at half maximum of the peak of the (111) plane of Si is 0.25° or more; and wherein the peak intensity of the peak of the (111) plane of Si is less than 20,000 cps; and the true density is 2.5 g/cm3 or more.

Abstract: Apparatus, systems, and methods described herein relate to the manufacture and use of single pouch battery cells. In some embodiments, an electrochemical cell includes a first current collector coupled to a first portion of a pouch, the first current collector having a first electrode material disposed thereon, a second current collector coupled to a second portion of the pouch, the second current collector having a second electrode material disposed thereon, and a separator disposed between the first electrode material and the second electrode material. The first portion of the pouch is coupled to the second portion of the pouch to enclose the electrochemical cell.

Abstract: A lithium-ion battery includes multiple electrodes. At least one of the electrodes is comprised of multiple sheets of electrode mixture, and each of the sheets includes a different percentage of a solid-state electrolyte within the electrode mixture. The sheets are laminated together and to a current collector such that a bottom sheet nearest the current collector comprises a lowest percentage of the solid-state electrolyte. A gradient of percentages of the solid-state electrolyte is formed from the bottom sheet to a topmost sheet comprised of a highest percentage of the solid-state electrolyte.

Abstract: The disclosure discloses a nickel cobalt manganese hydroxide, a cathode material, a preparation method thereof and a lithium ion battery. The nickel cobalt manganese hydroxide comprises a core and an outer layer covering the outside of the core. The core comprises flaky particles, the D50 particle diameter of the flaky particles in the core is 5-8 ?m, and the D50 particle diameter of particles in the outer layer is 0.1-5 ?m.

Abstract: An electrochemical cell having a casing housing an electrode assembly of a separator residing between a lithium anode and a cathode comprising silver vanadium oxide and fluorinated carbon is described. The electrode assembly is activated with a nonaqueous electrolyte comprising a lithium salt dissolved in a solvent system of propylene carbonate mixed with 1,2-dimethoxyethane, dibenzyl carbonate (DBC), lithium bis(oxalato)borate (LiBOB), and fluoroethylene carbonate (FEC). Preferably DBC is present in an amount ranging from about 0.005 moles (M) to about 0.25M, LiBOB is present in an amount ranging from about 0.005 wt. 5 to about 5 wt. %, and FEC is present in an amount ranging from about 0.01 wt. % to about 10 wt. %. This electrolyte formulation is more conductive than the conventional or prior art binary and ternary solvent system electrolytes while being chemically and electrochemically stable toward Li/SVO cells, Li-SVO/CFx mixture cells, and Li-SVO/CFx sandwich cathode primary electrochemical cells.

Abstract: An electrochemical cell having a casing housing an electrode assembly of a separator residing between a lithium anode and a cathode comprising silver vanadium oxide and fluorinated carbon is described. The electrode assembly is activated with a nonaqueous electrolyte comprising a lithium salt dissolved in a solvent system of propylene carbonate mixed with 1,2-dimethoxyethane, lithium bis(oxalato)borate (LiBOB), and fluoroethylene carbonate (FEC). Preferably LiBOB is present in an amount ranging from about 0.005 wt. 5 to about 5 wt. %, and FEC is present in an amount ranging from about 0.01 wt. % to about 10 wt. %. This electrolyte formulation is more conductive than the conventional or prior art binary and ternary solvent system electrolytes while being chemically and electrochemically stable toward Li/SVO cells, Li-SVO/CFx mixture cells, and Li-SVO/CFx sandwich cathode primary electrochemical cells.

Abstract: Systems and methods for using an ultrasonic vibration generator to apply vibrational energy to a metal negative electrode of a rechargeable battery. In some examples, the application of vibrational energy to the metal negative electrode occurs during a charging event.

Abstract: Novel, rechargeable magnesium/magnesium sulfide batteries are disclosed therein, having energy density competitive with lithium batteries, high cycle life, land lower cost. Production method of stabilized MgS is also described, as well as various cells' constructions.

Abstract: A hearing device for electrically coupling to skin of a user includes a body having a housing forming at least part of an outer surface. The device includes an acoustic transducer and an electrode disposed at least partially in the body. The electrode includes an outer conductor disposed at least partially in the housing and an inner conductor electrically coupled to the outer conductor and disposed subflush to the outer surface. A method of forming the hearing device includes providing a cast shell, forming an elastomeric conductor in a cavity of the cast shell, and removing a thin outer wall of the cast shell to form the housing of the hearing device.

Abstract: A positive electrode active material for a non-aqueous electrolyte secondary battery that includes a lithium transition metal composite oxide having a spinel structure and containing nickel and manganese is provided. The positive electrode active material includes a first surface region having a chemical composition with a molar ratio of nickel to manganese of 0.1 or less on the surface of the lithium transition metal composite oxide.

Abstract: Provided herein is a method of preparing anode slurries of lithium-ion batteries. The silicon-based material is uniformly dispersed prior to mixing with other components of the anode slurry. The method disclosed herein is capable of avoiding agglomeration of nano-sized silicon-based material and effectively dispersing the nano-sized silicon-based material uniformly in anode slurries. Anodes coated with the anode slurries disclosed herein also show an improvement in the electrical conductivity.

Abstract: A positive electrode plate of a lithium ion secondary battery includes a current collector foil, an active material layer including positive electrode active material particles containing lithium oxide on the current collector foil, and a protective conductive layer that does not include the positive electrode active material particles and includes a conductive material and a binding agent on the active material layer.

Abstract: The negative electrode active material according to the present embodiment includes alloy particle containing an alloy component and oxygen of 0.50 to 3.00 mass %. The alloy component contains Sn: 13.0 to 40.0 at % and Si: 6.0 to 40.0 at %. The alloy particle contains: one or two phases selected from a D03 phase in which the Si content is from 0 to 5.0 at % and a ? phase in which the Si content is from 0 to 5.0 at %; one or two phases selected from an ? phase in which the Si content is from 0 to 5.0 at % and an ?? phase in which the Si content is from 0 to 5.0 at %; and an SiOx phase. The alloy particle has, in an X-ray diffraction profile, a peak having a largest integrated diffraction intensity in a range of 42.0 to 44.0 degrees of a diffraction angle 2?.

Abstract: A precursor composition of a negative electrode of a Li-ion battery, a negative electrode comprising or formed from the precursor composition, a Li-ion battery comprising the negative electrode, a device comprising the negative electrode, methods of making the precursor composition, negative electrode and Li-ion battery, and uses of the precursor composition or components thereof for increasing discharge capacity and/or reducing discharge capacity loss and/or improving cycling stability of a Li-ion battery comprising the negative electrode.

Abstract: A process for producing an integrated layer (10 nm to 500 ?m) of highly oriented halogenated graphene sheets, comprising: (a) preparing a graphene oxide (GO) dispersion having GO sheets dispersed in a fluid medium; (b) dispensing and depositing a layer of GO dispersion onto a surface of a supporting substrate under a shear stress condition that induces orientation of GO sheets to form a wet layer of GO on the supporting substrate; (c) introducing a halogenating agent into the wet layer of graphene oxide and effecting a chemical reaction between the halogenating agent and GO sheets to form a wet layer of halogenated graphene, C6ZxOy, wherein Z is a halogen element selected from F, Cl, Br, I, or a combination thereof, x=0.01 to 6.0, y=0 to 5.0, and x+y?6.0; and (d) removing the fluid medium.

Abstract: Disclosed is a negative electrode material for a non-aqueous electrolyte secondary battery, including: a lithium silicate phase; silicon particles dispersed in the lithium silicate phase; and at least one element Me dispersed in the lithium silicate phase, and selected from the group consisting of a rare-earth element and an alkaline-earth metal. The composition of the lithium silicate phase is represented, for example, by the formula: Li2zSiO2+z, and satisfies 0<z<2, and the element Me is dispersed in the lithium silicate phase, for example, as an Me oxide.

Abstract: A positive-electrode active material contains a lithium composite oxide, wherein the lithium composite oxide is a multiphase mixture including a first phase, of which a crystal structure belongs to a space group Fm-3m, and a second phase, of which a crystal structure belongs to a space group Fd-3m; and in an XRD pattern of the lithium composite oxide, the integrated intensity ratio I(18°-20°)/I(43°-46°) of a first maximum peak I(18°-20°) within a first range of 18 degrees to 20 degrees at a diffraction angle 2? to a second maximum peak I(43°-46°) within a second range of 43 degrees to 46 degrees at the diffraction angle 2? satisfies 0.05?I(18°-20°)/I(43°-46°)?0.90.

Abstract: The epsilon polymorph of vanadyl phosphate, ?-VOPO4, made from the solvothermally synthesized H2VOPO4, is a high density cathode material for lithium-ion batteries optimized to reversibly intercalate two Li-ions to reach the full theoretical capacity at least 50 cycles with a coulombic efficiency of 98%. This material adopts a stable 3D tunnel structure and can extract two Li-ions per vanadium ion, giving a theoretical capacity of 305 mAh/g, with an upper charge/discharge plateau at around 4.0 V, and one lower at around 2.5 V.

Abstract: Provided is a lithium secondary battery including a cathode containing a cathode active material in which a central part has a different concentration from a surface part, and a conductive material having a specific composition ratio, and specifically, a lithium secondary battery including a cathode containing a cathode active material in which a central part of one or more kinds of metals configuring the cathode active material has a different concentration from a surface part thereof, and two or more kinds of conductive materials mixed at a specific ratio, thereby having excellent stability and high low-temperature characteristic and high output characteristic as compared to a conventional lithium secondary battery.

Abstract: According to one embodiment, there is provided a non-aqueous electrolyte secondary battery including a positive electrode, a negative electrode including a negative electrode active material layer, and a non-aqueous electrolyte. The negative electrode active material layer contains carbon dioxide and releases the carbon dioxide in the range of 0.1 ml to 5 ml per 1 g when heated at 200° C. for 1 minute.

Abstract: A lithium-ion secondary battery includes at least a negative electrode, a positive electrode, and an electrolyte solution. The negative electrode includes at least negative electrode active material particles. Each of the negative electrode active material particles contains at least a SiOx particle and a Si layer. The Si layer covers a surface of the SiOx particle. The Si layer has a thickness not smaller than 10 nm and not greater than 100 nm. The electrolyte solution contains at least one selected from the group consisting of FEC and VC.

Abstract: Systems and methods for batteries comprising a cathode, an electrolyte, and an anode, wherein the anode is a Si-dominant anode that utilizes water-soluble maleic anhydride- and/or maleic acid-containing polymers/co-polymers, derivatives, and/or combinations (with or without additives) as binders.

Abstract: Provided herein are electrochemical systems and related methods of making and using electrochemical systems. Electrochemical systems of the invention implement novel cell geometries and composite carbon nanomaterials based design strategies useful for achieving enhanced electrical power source performance, particularly high specific energies, useful discharge rate capabilities and good cycle life. Electrochemical systems of the invention are versatile and include secondary lithium ion cells, useful for a range of important applications including use in portable electronic devices.

Abstract: To provide a positive electrode for a lithium ion battery having high energy density and being capable of rapid discharging. A positive electrode for a lithium ion battery, the positive electrode including a positive electrode current collector, a positive electrode active material layer formed on the surface of the positive electrode current collector, and a non-aqueous liquid electrolyte including an electrolyte containing lithium ions and a non-aqueous solvent, in which the positive electrode active material layer includes a positive electrode active material and voids, the voids are filled with the non-aqueous liquid electrolyte, and a proportion of the battery capacity based on a total amount of lithium ions in the non-aqueous liquid electrolyte existing in the positive electrode active material layer with respect to the battery capacity based on a total amount of the positive electrode active material is 3.5 to 15%.

Abstract: A negative electrode for a lithium ion secondary battery includes a current collector and an active material-containing layer disposed on the current collector. The active material-containing layer includes: a first negative electrode active material including a carbon material; a second negative electrode active material including a metal element or a metalloid element as a constituent element, the metal element or the metalloid element being capable of forming an alloy with lithium; and a binder. The first negative electrode active material contains a spherical graphite, and the binder contains an acrylic resin.

Abstract: A nonaqueous electrolyte secondary battery (10) includes a porous film (78) (heat resistance layer (HRL)) in, which particles (filler F) of an insulating ceramic are attached through a binder onto a surface of at least one of a negative electrode active material layer (63) and a separator (72, 74). In the nonaqueous electrolyte secondary battery, the insulating ceramic of the porous film (78) contains at least one of Fe and Ni.

Abstract: The present invention provides a silicon nanowire structure embedded in nickel silicide nanowires for lithium-based battery anodes and anodes including the same. In particular, a Si nanowire structure embedded in NiSix nanowires according to the present invention may provide a solution to a problem, such as disconnection of Si nanowires from a current collector shown when the Si nanowires are expanded by alloying with Li or contracted during the use of a battery, and the like, by flexibly embedding the Si nanowires in the NiSix nanowires.

Abstract: A method for positive electrode active material for a secondary battery includes preparing a precursor by reacting a nickel raw material, a cobalt raw material and an M1 raw material; forming a first surface-treated layer including an oxide of Formula 2 below, on a surface of a core including a lithium composite metal oxide of Formula 1 below, by mixing the precursor with a lithium raw material and an M3 raw material, firing the resultant mixture; and forming a second surface-treated layer including a lithium compound of Formula 3 below, on the core with the first surface-treated layer formed thereon, LiaNi1?x?yCoxM1yM3zM2wO2??[Formula 1] LimM4O(m+n)/2??[Formula 2] LipM5qAr??[Formula 3] wherein, in Formulae 1 to 3, A, M1 to M5, a, x, y, z, w, m, n, p, and q are the same as those defined in the specification.

Abstract: A nonaqueous electrolyte secondary battery in which low-crystalline carbon-covered graphite is used as negative electrode active material, wherein a cobalt-containing lithium transitional metal oxide is used for: a first positive electrode active material in which the volume per unit mass of pores having a pore size of 100 nm or less is 8 mm3/g or greater; and a second positive electrode active material in which the volume per unit mass of pores having a pore size of 100 nm or less is 5 mm3/g or less.

Abstract: Improved anodes and cells are provided, which enable fast charging rates with enhanced safety due to much reduced probability of metallization of lithium on the anode, preventing dendrite growth and related risks of fire or explosion. Anodes and/or electrolytes have buffering zones for partly reducing and gradually introducing lithium ions into the anode for lithiation, to prevent lithium ion accumulation at the anode electrolyte interface and consequent metallization and dendrite growth. Various anode active materials and combinations, modifications through nanoparticles and a range of coatings which implement the improved anodes are provided.

Abstract: A non-aqueous electrolyte secondary battery which uses a lithium titanium composite oxide as a negative electrode active material is configured to use a first positive electrode active material that is a Co-containing lithium transition metal oxide and has a volume per mass of 8 mm3/g or more with respect to pores having a pore diameter of 100 nm or less and a second positive electrode active material that has a volume per mass of 5 mm3/g or less with respect to pores having a pore diameter of 100 nm or less.

Abstract: The present invention relates to a non-aqueous electrolyte secondary cell comprising: a positive electrode having a positive electrode mixture layer that contains a first positive-electrode active material and a second positive-electrode active material; a negative electrode containing a lithium-titanium composite oxide as a negative-electrode active material; and a non-aqueous electrolyte. The volume per mass of pores in the first positive-electrode active material having a pore diameter of 100 nm or less is four or more times the volume per mass of pores in the second positive-electrode active material having a pore diameter of 100 nm or less. The content of the first positive-electrode active material is 30 mass % or less with respect to the total amount of the first positive-electrode active material and the second positive-electrode active material.

Abstract: A composite including: at least one selected from a silicon oxide of the formula SiO2 and a silicon oxide of the formula SiOx wherein 0<x<2; and graphene, wherein the silicon oxide is disposed in a graphene matrix.

Abstract: A power storage device with high capacity is provided. Alternatively, a power storage device with excellent cycle characteristics is provided. Alternatively, a power storage device with high charge and discharge efficiency is provided. Alternatively, a power storage device with a long lifetime is provided. A negative electrode active material includes a first region and a second region. The first region includes at least one element selected from Si, Mg, Ca, Ga, Al, Ge, Sn, Pb, Sb, Bi, Ag, Zn, Cd, As, Hg, and In. The second region includes oxygen and the same element as the one included in the first region. The crystallite size of the element included in the first region is larger than or equal to 1 nm and smaller than or equal to 10 nm.

Abstract: Methods for forming bonded assemblies using metal inverse opal and cap structures are disclosed. In one embodiment, a method for forming a bonded assembly includes positioning a substrate against a polymer support that is porous, depositing a metal onto and within the polymer support, disposing a cap layer to the polymer support opposite of the substrate to form a bottom electrode, and removing the polymer support from between the substrate and the cap layer to form a metal inverse opal structure disposed therebetween.

Abstract: A negative electrode active material contains particles of negative electrode active material, wherein the particles of negative electrode active material contain a silicon compound represented by SiOx (0.5?x?1.6), and when the particles of negative electrode active material are measured by an atom probe method, and an Si 75% equivalent concentration surface obtained by the atom probe method is defined to be a boundary surface of a silicon grain, an average diameter of the silicon grains at a center portion of the particle in the particles of negative electrode active material is in the range of 0.25 nm to 5 nm. According to this constitution, when it is used as the negative electrode active material of a secondary battery, a negative electrode active material is capable of increasing battery capacity and improving cycle characteristics.

Abstract: An article having a continuous network of zinc and a continuous network of void space interpenetrating the zinc network. The zinc network is a fused, monolithic structure. A method of: providing an emulsion having a zinc powder and a liquid phase; drying the emulsion to form a sponge; annealing and/or sintering the sponge to form an annealed and/or sintered sponge; heating the annealed and/or sintered sponge in an oxidizing atmosphere to form an oxidized sponge having zinc oxide on the surface of the oxidized sponge; and electrochemically reducing the zinc oxide to form a zinc metal sponge.

Abstract: An article having a continuous network of zinc and a continuous network of void space interpenetrating the zinc network. The zinc network is a fused, monolithic structure. A method of: providing an emulsion having a zinc powder and a liquid phase; drying the emulsion to form a sponge; annealing and/or sintering the sponge to form an annealed and/or sintered sponge; heating the annealed and/or sintered sponge in an oxidizing atmosphere to form an oxidized sponge having zinc oxide on the surface of the oxidized sponge; and electrochemically reducing the zinc oxide to form a zinc metal sponge.

Abstract: A high energy density lithium-ion rechargeable battery cell is provided which includes an anode material containing a carbon-nanotube (CNT)-Si composite and a cathode material containing a core-shell gradient and/or concentration gradient nickel-based lithium metal oxide.

Abstract: Disclosed is a lithium complex oxide and method of manufacturing the same, more particularly, a lithium complex oxide effective in improving the characteristics of capacity, resistance, and lifetime with reduced residual lithium and with different interplanar distances of crystalline structure between a primary particle locating in a internal part of secondary particle and a primary particle locating on the surface part of the secondary particle, and a method of preparing the same.

Abstract: A negative electrode for a rechargeable lithium battery including a current collector and a negative active material layer positioned on the current collector, wherein the negative active material layer includes a first active material including a carbon-based material, a composite material including a second active material including a silicon-based material or a tin-based material, the second active material being coated with a combined binder and a fiber-shaped conductive material on the surface thereof, and a binder, a rechargeable lithium battery including the same and a method of preparing the same.

Abstract: Provided is a roll-press machine provided with a wrinkle occurrence prevention device for suppressing occurrence of wrinkles caused by a roll-pressing operation on a coated part and an uncoated part of an electrode plate, and a roll-pressing method. A work roll having a diameter smaller than that of the pressing roll is pressed to allow the uncoated part to be rolled between the pressing roll and the work roll, and the work roll is held by two backup rolls arranged in a V-shape formation so that the work roll can press the uncoated part with a pressing force uniform width-wise.

Abstract: An electrode includes a current collector having metallic struts formed by freeze tape casting along a cast direction, and an electrochemically active material occupying portions of the void spaces. The struts define a percolated conductive network and void spaces through the percolated conductive network. The struts are directionally aligned and the void spaces are directionally ordered perpendicular to the cast direction.

Abstract: An electrode material includes a fine-array porous material. The fine-array porous material includes a plurality of pores having a substantially uniform size of <1000 ?m, with a variation of <20%, and comprises a metal such as Ni, Al, Ti, Sn and Mn. The metal fine-array porous electrode material can be surface-treated to form a metal oxide on the surface of the porous electrode material, or be coated with a metal oxide including RuO2, TaO. An electrical energy storage apparatus, such as a supercapacitor or a lithium battery, containing the fine-array porous electrode material can have significantly improved performances as compared with conventional materials.