Abstract: A multilayer anode includes an anode collector, and a plurality of anode mixture layers sequentially stacked on at least one surface of the anode collector, and including natural graphite as an anode active material. A weight ratio of the natural graphite in innermost and outermost anode mixture layers is greater than a weight ratio of the natural graphite in an anode mixture layer located between the innermost and outermost anode mixture layers, in a stacking direction of the plurality of anode mixture layers. Performance of a cell may be improved and calendering-calender contamination occurring in a calendering process and an electrode stripping phenomenon may be prevented.

Abstract: This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm?D2?3 ?m. The electrode active material layer includes an electrode active material, a binder, and a conductive agent unevenly distributed in a thickness direction of the electrode active material layer. A weight percentage of the conductive agent in an interior area of the electrode active material layer is higher than that in an exterior area of the electrode active material layer.

Abstract: An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO42?) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.

Abstract: This application relates to the field of battery technologies, and provides a battery module and a manufacturing method thereof. The battery module includes: two or more battery groups, each battery group including two or more battery cells; a module frame, including end plates and side plates, wherein the end plates and the side plates form an accommodating cavity for fixing the battery groups; a middle plate, wherein the middle plate is disposed between two of the battery groups, and is provided with an accommodating groove inside; and a cell management unit, disposed in the accommodating groove of the middle plate and connected to a sampling line of the battery cells. A cell management unit in the accommodating groove inside the middle plate can reduce the chance from failing under swelling pressure of the battery cells.

Abstract: The present application provides a method for producing an ion conductor containing Li2B12H12 and LiBH4, which includes obtaining a mixture by mixing LiBH4 and B10H14 at a molar ratio LiBH4/B10H14 of from 2.1 to 4.3; and subjecting the mixture to a heat treatment.

Abstract: A nonaqueous electrolyte secondary battery includes an electrode assembly and an electrolyte solution. The electrode assembly is impregnated with at least part of the electrolyte solution. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The separator separates the positive electrode and the negative electrode from each other. The negative electrode includes a negative electrode active material. The negative electrode active material includes graphite. The following relation of a formula (1) is satisfied: “1.60?NPR/AAR?2.55”. “NPR” represents a ratio of a negative electrode charging capacity to a positive electrode charging capacity. “AAR” represents a ratio of an effective discharging capacity of the negative electrode to a total of a capacity corresponding to an amount of inactive lithium adhered to the negative electrode and the effective discharging capacity of the negative electrode.

Abstract: A high-voltage battery for a motor vehicle includes a battery housing for receiving a plurality of battery modules in an interior space of the battery housing, and a detection device for detecting damage to the battery housing. The detection device includes at least one pressure sensor arranged in the interior space of the battery housing, which is configured to detect a pressure signal in the interior space of the battery housing, and an evaluation unit, which is configured to identify the damage to the battery housing based on the pressure signal detected by the pressure sensor. A method and a motor vehicle using the high-voltage battery are also provided.

Abstract: An electrode plate for a lithium battery includes a composite current collector, a first active material layer, and a first electrode tab. The composite current collector includes a polymer layer and first metallic layer thereon. The first active material layer is disposed on a surface of the first metallic layer facing away from the polymer layer. The first active material layer defines a first receiving groove at an edge of the first active material layer. The first electrode tab is received in the first receiving groove, and is electrically connected to the first metallic layer. The thickness of the first electrode tab can be varied according to the electrical resistance desired. Thus, a high resistance of the first electrode tab is avoided.

Abstract: A battery includes a cathode layer, a cathode current collector on the cathode layer, an anode layer on the cathode layer, an anode current collector on the anode layer, a separator between the cathode layer and the anode layer, and an electrolyte, wherein the cathode layer includes a plurality of crystal grains of a cathode active material and aligned in a first direction, and at least one groove formed in a direction perpendicular to an upper surface of the cathode layer that is in contact with the separator, and wherein a side surface of the cathode layer exposed by the at least one groove is aligned with a <101> crystal direction, a <hk0> crystal direction, wherein h and k are integers greater than or equal to 1, or a combination thereof, of the crystal grains of the cathode active material.

Abstract: A positive active material for a lithium-sulfur battery is provided. The positive active material for a lithium-sulfur battery includes carbon layers and metal compound layers alternately and repeatedly stacked. Each of the metal compound layers includes molybdenum and sulfur. Sulfur of the positive active material for a lithium-sulfur battery is provided from the metal compound layer through a preliminary charge/discharge process.

Abstract: An electrolyte solution comprising an ionic component, a base solvent, and an additive package. The additive package comprises a trinitrile compound and a cyclic carbonate. The electrolyte solution comprises symmetric linear carbonate in an amount greater than 19 wt %, based on the total weight of the electrolyte solution.

Abstract: A lithium electrode and a lithium secondary battery including the same. By using an olefin-based ion conducting polymer as a protective layer-forming material of a lithium electrode having a protective layer formed on a lithium metal layer, the lithium electrode may be protected from moisture or open air during a lithium electrode preparation process, lithium dendrite formation and growth from the lithium electrode may be prevented, and performance of a battery using the lithium electrode may be enhanced.

Abstract: A negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.

Abstract: A method for preparing a carbon nanostructure including molybdenum disulfide is discussed. More particularly, a method is discussed for preparing a carbon nanostructure in which molybdenum disulfide is located on the surface by melt diffusion and heat treatment of a mixture of a molybdenum precursor, a carbon nanostructure, and sulfur. Also, a positive electrode of a lithium secondary battery including a carbon nanostructure including molybdenum disulfide as an additive, and a lithium secondary battery including the same. In the case of the lithium secondary battery including the positive electrode to which the carbon nanostructure including molybdenum disulfide was applied, the carbon nanostructure including the molybdenum disulfide adsorbs lithium polysulfide (LiPS) generated during the charging/discharging process of the lithium secondary battery, thereby increasing the charging/discharging efficiency of the battery and improving lifetime characteristics.

Abstract: A reduced graphene oxide/manganese(IV) oxide nanocomposite is provided. This nanocomposite comprises reduced graphene oxide flakes and manganese oxide nanoparticles distributed on the surface of the flakes. Electrodes comprising this nanocomposite are also provided. Embodiments of such electrodes displayed broad voltage windows. A method for producing the nanocomposites as well as other nanocomposites is also provided. The method comprises the step of electrochemically exfoliating graphite in an exfoliation electrolyte comprising an intercalant and a precursor which is an oxometallate, a polyoxometalate, a thiometallate, or metal salt together with an acid.

Abstract: An electrolyte for a lithium secondary battery according to embodiments of the present invention includes an organic solvent, a lithium salt, and an additive including a cyclic ether-sulfate-based compound. Thereby, cycle characteristics and high-temperature stability of the lithium secondary battery may be improved.

Abstract: A negative electrode for a lithium secondary battery comprises a current collector and a negative electrode active material layer formed on the current collector, wherein the negative electrode active material layer includes a first negative electrode active material and a first binder, and a second active material layer formed on the first active material layer and including a second negative electrode active material and a second binder, a content of the first binder is greater than that of the second binder, a loading level of the negative electrode active material layer is 10 mg/cm2 to 30 mg/cm2, a loading level of the first active material layer is 4 mg/cm2 to 25 mg/cm2, a loading level of the second active material layer is 4 mg/cm2 to 25 mg/cm2, and a loading level of the second active material layer is equal to or higher than that of the first active material layer.

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 invention relates to a cuboid-shaped housing (1) for receiving a plurality of cuboid-shaped batteries (2) which are intended as an energy source for the traction drive of motor vehicles, in particular automobiles, the housing (1) having a bottom wall (3), first and second side walls (4, 5) peripherally connected to said bottom wall, and a top (6) connected detachably to the free ends of the side walls (4, 5), wherein: the housing (1) is a sheet metal component folded from a sheet metal panel; the side walls (4, 5) are folded in the same orientation at right angles to the bottom wall (3), the free ends of which are folded outwardly at right angles oriented away from the housing interior, and a narrow edge region is turned in the opposite direction such that a double layer (7) is formed; the exposed upper edge region (8) of the double layer (7) is connected in a sealed manner to the top (6); and the cut edge (10) of the edge region lies within the sealed housing region.

Abstract: The invention relates to a process for the preparation of carbon-deposited alkali metal oxyanion and the use thereof as cathode material in lithium secondary batteries wherein the process comprises synthesis of partially reacted alkali metal oxyanion, a wet-based nanomilling step, a drying step and a subsequent carbon deposition step performed by a thermal CVD process. The invention also relates to carbon deposited alkali metal oxyanion with less than 80 ppm of sulfur impurities for the preparation of a cathode of lithium secondary batteries with exceptional high-temperature electrochemical properties.