Abstract: The electrolyte for a lithium secondary battery includes: a lithium salt; a solvent; and a functional additive, wherein the functional additive includes: at least one high-voltage additive selected from a group consisting of lithium bis(phthalato)borate, represented by the following formula 1; hexafluoroglutaric anhydride, represented by the following formula 2; and phosphoric acid tris(2,2,2-trifluoroethyl)ester, represented by the following formula 3:

Abstract: A composite positive electrode active material includes: a first metal oxide that has a layered structure and is represented by Formula 1; and a second metal oxide that has a spinel structure and is represented by Formula 2, wherein the composite positive electrode active material includes a composite of the first metal oxide and the second metal oxide: LiMO2??Formula 1 LiMe2O4??Formula 2 wherein, in Formulas 1 and 2, M and Me are each independently at least one element selected from Groups 2 to 14 of the periodic table, and a molar ratio of Li/(M+Me) in the composite is less than 1.

Abstract: A battery cell includes a current collector, separator, anode, and deposition biasing element. The anode is positioned between the current collector and separator, and includes an ion conducting ceramic material with a porous structure. The biasing element is positioned within the battery cell so as to bias ion deposition within the anode, during a charging process, away from the separator. A method for forming a battery cell includes electrospinning particles of material into a mesh to form an anode that includes an ionically conductive material. At least one biasing element is applied to at least one of the anode and a current collector. The anode is positioned between the current collector and a separator. The current collector and the separator are joined to the anode.

Abstract: A cathode active material includes a plurality of cathode active compound particles and a coating disposed over each of the cathode active compound particles. The coating includes a lithium (Li)-ion conducting oxide containing lanthanum (La) and titanium (Ti).

Abstract: A Li—S battery cell comprising a Sulphur-containing cathode, a Lithium-containing anode, a separator in between the cathode and anode with an electrolyte on both sides of the separator filling interspaces between the anode and the cathode. The separator contains electrically conducting carbon and prevents polysulphide intermediates from migrating from the Sulphur-containing cathode to the Lithium anode.

Abstract: An impact resistant wound cell comprises a first electrode plate with a first surface and a second surface. The first surface comprises a first active material area and a first current collector area, the second surface comprises a second active material area and a second current collector area. The first current collector area is located on an inner side of an outermost circle of the wound cell. In the first electrode plate, the second current collector area and the first current collector area are adjacent to and opposite to each other, the first current collector area and the second current collector area are bonded together by a first bonding member. The present disclosure further provides a battery using the wound cell.

Abstract: A solid electrolyte including: a compound represented by Formula 1, LixM12?yM2y(PO4?zXz)3??Formula 1 wherein, in Formula 1, M1 is a tetravalent element, M2 is a monovalent element, a divalent element, a trivalent element, a tetravalent element, a pentavalent element, a hexavalent element, or a combination thereof, X is a halogen atom, a pseudohalogen, or a combination thereof, 0<x<8, 0?y<1, and 0<z<4.

Abstract: This positive electrode active material for nonaqueous electrolyte secondary batteries comprises composite oxide particles which contain Ni, Co and Li, while containing at least one of Mn and Al, and wherein the ratio of Ni to the total number of moles of the metal elements other than Li is 80% by mole or more. The composite oxide particles are composed of particles in an aggregated state and particles in a non-aggregated state; and the content ratio of the particles in an aggregated state to the particles in a non-aggregated state is from 5:95 to 50:50 in terms of the mass ratio.

Abstract: Articles and methods including layers for protection of electrodes in electrochemical cells are provided. As described herein, a layer, such as a protective layer for an electrode, may comprise a plurality of particles (e.g., crystalline inorganic particles, amorphous inorganic particles). In some aspects, at least a portion of the plurality of particles (e.g., inorganic particles) are fused to one another. For instance, in some aspects, the layer may be formed by aerosol deposition or another suitable process that involves subjecting the particles to a relatively high velocity such that fusion of particles occurs during deposition. In some cases, the protective layer may be porous.

Abstract: A method for producing a membrane electrode assembly for a fuel cell includes providing a first component of the membrane electrode assembly as part of a continuous material web which passes through a plurality of processing stations and connecting a second component of the membrane electrode assembly to the first component by a firmly bonded connection.

Abstract: Systems and methods for anisotropic expansion of silicon-dominant anodes may include a cathode, an electrolyte, and an anode, where the anode may include a current collector and an active material on the current collector. An expansion of the anode during operation may be configured by a metal used for the current collector, and/or a lamination process that adheres the active material to the current collector. The expansion of the anode may be more anisotropic for thicker current collectors. A thicker current collector may be 10 ?m thick or greater. The expansion of the anode may be more anisotropic for more rigid materials used for the current collector. A more rigid current collector may include nickel and a less rigid current collector may include copper. The expansion of the anode may be more anisotropic for a rougher surface current collector.

Abstract: [Problem] Provided is a silicon oxide-based negative electrode material capable of avoiding, as much as possible, decreased battery performance resulting from a heterogeneous distribution of a Li concentration. [Solution] Provided is a powder having an average composition of SiLixOy wherein 0.05<x<y<1.2 and a mean particle size of 1 ?m or more. Further, 10 particles randomly selected from particles of the powder each satisfy 0.8<L1/L2<1.2 with the standard deviation of L2 being 0.1 or less, L1 being a Li concentration at a depth of 50 nm from an outermost surface of each of the 10 particles, and L2 being a Li concentration at a depth of 400 nm from the outermost surface.

Abstract: The present application relates to the electrochemical field, and in particular, to a negative electrode plate and a secondary battery including the electrode plate. The present application provides a negative electrode plate. The negative electrode plate includes a negative electrode current collector, a first negative electrode active substance layer disposed on at least one surface of the negative electrode current collector, and a second negative electrode active substance layer disposed on the first negative electrode active substance layer. The first negative electrode active substance layer includes a first negative electrode active substance, and the second negative electrode active substance layer includes a second negative electrode active substance. The first negative electrode active substance satisfies 1 GPa?Young's modulus?10 GPa, and the second negative electrode active substance satisfies 11 GPa?Young's modulus?30 GPa.

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 are a nonaqueous electrolyte capable of providing a nonaqueous electrolyte energy storage device with reduced direct current resistance and an increased capacity retention ratio after charge-discharge cycles, a nonaqueous electrolyte energy storage device including such a nonaqueous electrolyte, and a method for producing such a nonaqueous electrolyte energy storage device. One mode of the present invention is a nonaqueous electrolyte for an energy storage device, containing an additive represented by the following Formula (1) or Formula (2). In Formula (1), R1 to R4 are each independently a hydrogen atom or a group represented by —NRa2, —ORa, —SRa, etc., with the proviso that at least one of R1 to R4 is a group represented by —ORa, —SRa, —COORa, —CORa, —SO2Ra, or —SO3Ra. In Formula (2), R5 to R7 are each independently a hydrogen atom or a group represented by —NRb2, —ORb, or —SRb, with the proviso that at least one of R5 to R7 is a group represented by —SRb.

Abstract: A metal-ion battery cell is provided that comprises anode and cathode electrodes, a separator, and an electrolyte. The anode electrode may, for example, have a capacity loading in the range of about 2 mAh/cm2 to about 10 mAh/cm2 and comprise anode particles that (i) have an average particle size in the range of about 0.2 microns to about 40 microns, (ii) exhibit a volume expansion in the range of about 8 vol. % to about 180 vol. % during one or more charge-discharge cycles of the battery cell, and (iii) exhibit a specific capacity in the range of about 600 mAh/g to about 2600 mAh/g. The electrolyte may comprise, for example, (i) one or more metal-ion salts and (ii) a solvent composition that comprises one or more low-melting point solvents that each have a melting point below about ?70° C. and a boiling point above about +70° C.

Abstract: Provided is a composition for a non-aqueous secondary battery functional layer with which it is possible to form a functional layer that has excellent heat shrinkage resistance and can cause a non-aqueous secondary battery to display excellent cycle characteristics. The composition for a non-aqueous secondary battery functional layer contains organic particles and a solvent. The organic particles include a polyfunctional ethylenically unsaturated monomer unit in a proportion of not less than 55 mass % and not more than 90 mass %, and have a volume-average particle diameter of not less than 50 nm and not more than 370 nm.

Abstract: Systems and methods are provided for carbon additives for direct coating of silicon-dominant anodes. An example composition for use in directly coated anodes may include a silicon-dominated anode active material, a carbon-based binder, and a carbon-based additive, with the composition being configured for low-temperature pyrolysis. The low-temperature pyrolysis may be conducted at <600° C. An anode may be formed using a direct coating process of the composition on a current collector. The anode active material yields silicon constituting between 86% and 97% of weight of the formed anode after pyrolysis. The carbon-based additive yields carbon constituting between 2% and 6% of weight of the formed anode after pyrolysis.

Abstract: An evaluation jig comprises a female terminal connectable to a male terminal of a charging connector. The female terminal includes a plurality of contact pieces and a support portion. Each contact piece has a flexible piece, and a contact portion protruding toward the center axis from an inner surface of the flexible piece. The flexible piece forms a portion of a cylinder having the center axis. The flexible piece has a length equal to or larger than twice an outer diameter of the cylinder in a direction parallel to the center axis. The flexible piece is elastically deformable so that the flexible piece has a distal end portion to be displaceable in a radial direction of the cylinder relative to a proximal end portion of the flexible piece. The contact portion has a shape curved so as to protrude inward in the radial direction.

Abstract: Embodiments provide a secondary battery and an apparatus containing the secondary battery. The secondary battery includes a negative electrode plate. The negative electrode plate includes a copper-based current collector and a negative electrode film layer disposed on at least one surface of the copper-based current collector and including a negative electrode active material, and the negative electrode active material includes graphite. The negative electrode plate satisfies Tx?25, where Tx is as defined in the specification.

Abstract: The present disclosure provides a cathode material which has improved charge/discharge efficiency; and a battery using the same. The cathode material includes a cathode active material and a first solid electrolyte material; and the first solid electrolyte material contains Li, M and X; however, does not include sulfur. M represents at least one element that is selected from the group consisting of metalloid elements and metal elements other than Li. X represents at least one selected from the group consisting of Cl and Br, and I. The cathode active material includes lithium iron phosphate.

Abstract: An anode of a battery comprises lithium metal, and a dopant, in the lithium metal. The anode has a thickness of at most 50 ?m, and the dopant is a metal with an electronegativity greater than lithium.

Abstract: A positive electrode active material has a small difference in a crystal structure between the charged state and the discharged state. For example, the crystal structure and volume of the positive electrode active material, which has a layered rock-salt crystal structure in the discharged state and a pseudo-spinel crystal structure in the charged state at a high voltage of approximately 4.6 V, are less likely to be changed by charging and discharging as compared with those of a known positive electrode active material. In order to form the positive electrode active material having the pseudo-spinel crystal structure in the charged state, it is preferable that a halogen source such as a fluorine and a magnesium source be mixed with particles of a composite oxide containing lithium, a transition metal, and oxygen, which is synthesized in advance, and then the mixture be heated at an appropriate temperature for an appropriate time.

Abstract: According to a first embodiment, there is provided a positive electrode including a positive electrode active material-containing layer containing a first active material having a spinel type crystal structure. The positive electrode satisfies the formulas (1) to (3) when combined with a negative electrode including a negative electrode active material-containing layer containing a first active material having a spinel type crystal structure: 0.5?a1/b1?1.5 (1); 0.4?a2/b2?1.4 (2); and 0.5?a3/b3?2.3 (3), where a1 and b1 are a pore volume per 1 g weight, a2 and b2 are a pore specific surface area, and a3 and b3 are a median diameter in pore distribution, for the positive and negative electrode active material-containing layers, respectively.

Abstract: A positive electrode material for a secondary battery, wherein the positive electrode material includes a triclinic crystal structure.

Abstract: The present invention relates to a solid-state battery, particularly a lithium-ion solid-state battery, composed of one or more battery cells, which have an ion-conducting solid matrix (2) as solid electrolyte, which matrix is embedded between two electrodes (1, 3). The proposed solid-state battery is characterized in that the solid matrix (2) is formed form camphor, 2-adamantanone or a mixture of one of the two with one or more other substances. Owing to the use of camphor or 2-adamantanone, the solid electrolyte is mechanically stable and has good ionic conductivity in a wide temperature range.

Abstract: Electrochemical cells comprising electrodes comprising lithium (e.g., in the form of a solid solution with non-lithium metals), from which in situ current collectors may be formed, are generally described.

Abstract: This secondary battery positive electrode is provided with a positive-electrode current collector, a positive-electrode mixture layer, and an intermediate layer disposed between the positive-electrode current collector and the positive-electrode mixture layer. The intermediate layer comprises: a first intermediate layer that includes a non-oxide conductive inorganic compound and a positive-electrode active material; and a second intermediate layer that includes an insulating inorganic material and a non-oxide conductive inorganic compound. The conductive inorganic compound becomes an insulating oxide at 300° C. or above.

Abstract: Lithium-ion batteries are provided that variously comprise anode and cathode electrodes, an electrolyte, a separator, and, in some designs, a protective layer. In some designs, at least one of the electrodes may comprise a composite of (i) Li2S and (ii) conductive carbon that is embedded in the core of the composite. In some designs, the protective layer may be disposed on at least one of the electrodes via electrolyte decomposition. Various methods of fabrication for lithium-ion battery electrodes and particles are also provided.

Abstract: A sulfide solid electrolyte, which is able to adjust the morphology unavailable traditionally, or is readily adjusted so as to have a desired morphology, the sulfide solid electrolyte having a volume-based average particle diameter measured by laser diffraction particle size distribution measurement of 3 ?m or more and a specific surface area measured by the BET method of 20 m2/g or more; and a method of treating a sulfide solid electrolyte including the sulfide solid electrolyte being subjected to at least one mechanical treatment selected from disintegration and granulation.

Abstract: Provided is a nonaqueous electrolyte solution for batteries, which contains an additive A that is composed of a boron compound represented by formula (1), and an additive B that has a lower reductive decomposition potential than the Additive A, in which n represents an integer from 1 to 5, M+ represents an Li+ ion or an H+ ion, and when n is an integer from 2 to 5, more than one M+ may be the same as or different from each other.

Abstract: The present disclosure relates to a binder solution for all-solid-state batteries. The binder solution includes a polymer binder, a first solvent, and an ion-conductive additive, wherein the ion-conductive additive includes lithium salt and a second solvent, which is different from the first solvent.

Abstract: A copolymer including a monomer A with a molar ratio a varying between around 0.01 and around 0.20, a monomer B with a molar ratio b varying between around 0.2 and around 0.4, and a monomer C with a molar ratio c varying between around 0.50 and around 0.70, the monomer A being a hydrophilic monomer including a pendant chain of poly(ethylene oxide) (POE) with low molar weight, the monomer B being a hydrophobic monomer with a glass transition temperature (Tg) of around ?30° C. or less, the monomer C being a monomer that is more hydrophobic than the monomer Band having a glass transition temperature (Tg) of around 80° C. or more, said monomers being organised in a hydrophilic segment, a hydrophobic segment and an intermediate segment located between the hydrophilic segment and the hydrophobic segment.

Abstract: The positive electrode active substance for a lithium secondary battery includes a mixture of a lithium cobalt composite oxide particle and an inorganic fluoride particle. The method for producing a positive electrode active substance for a lithium secondary battery includes a first step of subjecting a lithium cobalt composite oxide particle and an inorganic fluoride particle to a mixing treatment to thereby obtain a mixture of the lithium cobalt composite oxide particle and the inorganic fluoride particle. The lithium secondary battery uses, as a positive electrode active substance, the positive electrode active substance for a lithium secondary battery of the present invention.

Abstract: A rechargeable battery including a positive electrode, a negative electrode, and an electrolyte solution is provided. The electrolyte solution contains water and one or more lithium salts, and the lithium salts include lithium fluorophosphate.

Abstract: An embodiment of the present invention provides an electrode assembly including: a plurality of first electrodes provided with one side edges connected to each other by a first fixing portion; a plurality of second electrodes provided with one side edges connected to each other by a second fixing portion and inserted between the other side edges of the first electrodes; a separator interposed between the first electrode and the second electrode; and lead tabs including a first current collecting tab connected to the first electrode and a second current collecting tab connected to the second electrode.

Abstract: Disclosed are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive electrode includes a current collector and a positive electrode layer on the current collector, the positive electrode layer including a nickel-based positive active material of Chemical Formula 1 having a BET specific surface area of about 0.5 m2/g to about 2.5 m2/g, a metal fluoride, a conductive material, and a binder, wherein an amount of the metal fluoride is about 1 wt % to about 10 wt % based on 100 wt % of the positive electrode layer. In Chemical Formula 1, 0.9?a?1.1, 0.8?x?0.98, 0.01?y?0.01?z?0.1, x+y+z=1, and A is Mn or Al.

Abstract: An anode for a lithium-based energy storage device such as a lithium-ion battery is disclosed. The anode includes an electrically conductive current collector comprising an electrically conductive layer and a transition metal oxide layer overlaying the electrically conductive layer. The anode may include a continuous porous lithium storage layer provided over the transition metal oxide layer. The continuous porous lithium storage layer may include at least 40 atomic % silicon. A method of making the anode may include providing an electrically conductive current collector having an electrically conductive layer and a transition metal oxide layer provided over the electrically conductive layer. The transition metal oxide layer may have an average thickness of at least 0.05 ?m. A continuous porous lithium storage layer is deposited over the transition metal oxide layer by PECVD.

Abstract: A positive electrode material, a positive electrode, and a battery employing the same are provided. The positive electrode material includes an active particle and a modified layer covering the surface of the active particle. The modified layer is a reaction product of a composition. The composition includes an ionic conductive ceramic compound, an organic conductive compound, and a coupling agent. In the disclosure, the ionic conductive ceramic compound is 50-84 parts by weight, the organic conductive compound is 16-50 parts by weight, and the total weight of the ionic conductive ceramic compound and the organic conductive compound is 100 parts by weight. In the disclosure, the weight percentage of the coupling agent is from 0.05 wt % to 10 wt %, based on the total weight of the ionic conductive ceramic compound and the organic conductive compound.

Abstract: A battery and related methods are described. The battery can include a plurality of battery cell segments. Each of the battery cell segments can include: a positive temperature coefficient (PTC) material whose resistance increases with temperature, an anode segment, a cathode segment, and one or more current limiters. The one or more current limiters of a battery cell segment are configured to conditionally electrically isolate the battery cell segment based on an occurrence of a short circuit within the battery cell segment. The battery can be used to store electrical power and/or provide electrical power to a load.

Abstract: The present application relates to a cathode material and an electrochemical device comprising the same. In particular, the present application relates to a cathode material having a surface heterophasic structure, wherein the cathode material includes a lithium cobalt oxide and an oxide of cobalt, wherein a Raman spectrum of the cathode material has characteristic peaks in the range of about 470 cm?1 to about 530 cm?1, about 560 cm?1 to about 630 cm?1 and about 650 cm?1 to about 750 cm?1, and wherein the surface heterophasic structure of the cathode material includes the lithium cobalt oxide and the oxide of cobalt. The electrochemical device using the cathode material having a surface heterophasic structure of the present application can exhibit excellent cycle performance and thermal stability.

Abstract: A positive electrode active material for a secondary battery is provided. The positive electrode active material being a lithium cobalt-based oxide includes a doping element M. A lithium cobalt-based oxide particle containing the doping element M in an amount of 3,000 ppm or more, wherein in a bulk portion corresponding to 90% of a core side among the radius from a core of the particle to a surface thereof, the doping element M in the lithium cobalt-based oxide particle is contained at a constant concentration, and in a surface portion from the surface of the particle to 100 nm in a core direction, the doping element M is contained at a concentration equal to or higher than that in the bulk portion and has a concentration in which the concentration thereof is gradient gradually decreased in the core direction from the surface of the particle.

Abstract: A slurry is prepared by mixing a solid electrolyte material, an electrode active material, and a dispersion medium. The eluted amount of a halogen element in the dispersion medium in the slurry is measured. When the eluted amount is within a reference range, the slurry is rated as a good slurry. An electrode is produced by applying the good slurry to a surface of a base material and drying.

Abstract: Disclosed herein are improved methods and devices for recycling lithium cathodes from batteries.

Abstract: The present invention relates to an electrolyte for a lithium secondary battery, comprising an organic solvent, a lithium salt and a compound of Chemical Formula 1, wherein the compound of Chemical Formula 1 is contained in an amount of 0.001 wt % or more and less than 0.1 wt %. In Chemical Formula 1, n is one of the integers 3 to 10.

Abstract: A positive electrode for an electrochemical cell of a secondary lithium metal battery may include an aluminum metal substrate and a protective layer disposed on a major surface of the aluminum metal substrate. The protective layer may include a conformal aluminum fluoride coating layer. A positive electrode active material layer may overlie the protective layer on the major surface of the aluminum metal substrate. The positive electrode active material layer may include a plurality of interconnected pores, which may be infiltrated with a nonaqueous electrolyte that includes a lithium imide salt.

Abstract: The present disclosure relates to prelithiated Si electrodes, methods of prelithiating Si electrodes, and use of prelithiated electrodes in electrochemical devices are described. There are several characteristics of electrode prelithiation that enable the superior battery performance. First, a prelithiated silicon anode is already in its expanded state during SEI formation, and therefore less of the SEI layer breaks down and reforms during cycling. Second, the prelithiated anode has a lower anode potential, which may also help the cycle performance of an electrochemical device.

Abstract: A lithium boron fluorophosphate complex compound including a compound A that is one selected from a group of lithium boron fluorophosphates represented by Formula (I), and a compound B that is one selected from a group of compounds represented by Formulae (II) to (IX). R0 represents a hydrocarbon group, R1 to R7 each independently represent a hydrogen atom or a substituent, R8, R9, R10, R11, and R13 to R21 each independently represent a substituent, and R12, R22, and R23 each independently represent a divalent linking group.

Abstract: Provided are methods for solid state pretreatment of active materials (e.g., prelithiation of silicon monoxide) while forming treated negative active material structures. Also provided are the formed structures, negative electrodes comprising these structures, and electrochemical cells comprising these electrodes. In some examples, silicon monoxide structures are mixed with lithium hydroxide structures or some other lithium-containing structures. The mixture is heated in an inert environment to form treated negative active material structures. These treated structures comprise various lithium-containing components, some of which trap lithium. When an electrochemical cell, formed with these treated negative active material structures, is initially charged and additional new lithium ions are introduced into the negative electrodes (e.g.

Abstract: Discussed is a notching apparatus and method for a secondary battery. The notching apparatus includes: a notching unit notching a portion of an electrode that is continuously supplied; a drying unit drying the electrode while the electrode discharged from the notching unit passes therethrough; and a collecting unit collecting the electrode discharged from the drying unit, wherein the drying unit includes a heating body provided with a drying space that is a passage through which the electrode passes therein, and lamp parts mounted on the heating body to irradiate infrared rays onto a surface of the electrode while the electrode moves through the drying space.