Abstract: To provide a method for production of an all-solid-state battery in which cracking of the ends of the electrodes can be suppressed even if a negative electrode active material layer including lithium-titanium oxide is roll-pressed, provided is a method for the production of an all-solid-state battery, including roll-pressing to consolidate a negative electrode active material layer; wherein the all-solid-state battery has a structure including a laminate of a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, the negative electrode active material layer, and a negative electrode current collector layer in this order, the negative electrode active material layer includes a lithium-titanium oxide as a negative electrode active material, and prior to the roll-pressing, a stress relaxation rate of the negative electrode active material layer is 32.5% or more.

Abstract: A solid electrolyte material is represented by the following compositional formula (1): Li3-3?-2aY1+?-aMaCl6-x-yBrxIy where, M is at least one selected from the group consisting of Ta and Nb; and ?1<?<1, 0<a<1.2, 0<(3?3??2a), 0<(1+??a), 0?x?6, 0?y?6, and (x+y)?6 are satisfied.

Abstract: The nonaqueous electrolyte secondary battery comprises the following: a positive electrode including a positive electrode active material that includes a lithium-containing transition metal oxide, a negative electrode including a negative electrode current collector wherein lithium metal deposits on the negative electrode current collector during charging, a separator disposed between the positive electrode and the negative electrode, and a nonaqueous electrolyte. The molar ratio of the total amount of lithium held by the positive electrode and the negative electrode to the amount of transition metal in the positive electrode is not more than 1.1. In addition, in the discharged state, a space layer is present between the negative electrode and the separator, and the positive electrode capacity per unit area, ? (mAh/cm2), of the positive electrode and the average in thickness, X (?m), of the space layer 50 satisfy 0.05??/X?0.2.

Abstract: This disclosure provides a battery including a cathode, an anode positioned opposite the cathode and a carbon interface layer. The carbon interface layer includes an electrically insulating flaky carbon layer conformally encapsulating the anode. A plurality of carbon nano-onions (CNOs) defining a plurality of interstitial pore volumes are interspersed throughout the electrically insulating flaky carbon layer. An electrolyte is in contact with the carbon interface layer and the cathode. A separator is positioned between the anode and the cathode. The electrically insulating flaky carbon layer can include graphene oxide (GO). The plurality of interstitial pore volumes can be configured to transport lithium (Li) ions between the anode and the cathode via the plurality of interstitial pore volumes in a bulk phase of the electrolyte. The carbon interface layer can be configured to inhibit growth of Li dendritic structures from the anode towards the cathode.

Abstract: A composition of matter suitable for incorporation into a battery electrode is disclosed. In some implementations, the composition of matter may include pores that may be defined in size or shape by several carbonaceous particles. Each of the particles may have multiple regions such that adjacent regions are separated from each other by some of the pores. Deformable regions may be distributed throughout a perimeter of each of the particles, for example, to accommodate coalescence of multiple adjacent particles. The composition of matter may also include a plurality of aggregates and a plurality of agglomerates, where each aggregate includes a multitude of the particles joined together, and each agglomerate includes a multitude of the aggregates joined together.

Abstract: A battery includes a positive electrode containing sulfur, a negative electrode containing a material for occluding and releasing a lithium ion, and an electrolytic solution. The electrolytic solution contains at least one of a liquid complex and a liquid salt in which a polysulfide is insoluble or almost insoluble, and a solvent in which a polysulfide is soluble. The electrolytic solution has a Li2S8 saturation sulfur concentration of 10 mM or more and 400 mM or less.

Abstract: Additives for energy storage devices comprising phosphorus-containing compounds are disclosed. The energy storage device comprises a first electrode and a second electrode, where at least one of the first electrode and the second electrode is a Si-based electrode, a separator between the first electrode and the second electrode, and an electrolyte composition. Phosphorus-containing compounds may serve as additives to the first electrode, the second electrode and/or the electrolyte, as well as the separator.

Abstract: Various embodiments of the present invention relate to a secondary battery. The technical problem to be solved is to provide the secondary battery which can improve the insulation strength of first and second multi-tabs, by forming the first and second multi-tabs of first and second electrode assemblies symmetrically with respect to each other, and also can improve the insulation strength of the first and second multi-tabs by forming an insulating layer on the first and second multi-tabs of the first and second electrode assemblies.

Abstract: A 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 first particles configured from an electrically conductive material, and second particles which are configured from an insulating inorganic material and have an average grain size greater than an average grain size of the first particles. The volume ratio of the first particles in the intermediate layer is not less than 25% and less than 70%. The volume ratio of the second particles in the intermediate layer is not less than 30% and less than 75%. The density of the intermediate layer is greater than 1 g/cm3 and not more than 2.5 g/cm3.

Abstract: The present invention provides a technology that allows supplying stably a nonaqueous electrolyte secondary battery having a high capacity retention rate and being excellent in resistance to deterioration. The nonaqueous electrolyte secondary battery disclosed herein is provided with a wound electrode body resulting from winding a stack 10 having a stacking of a positive electrode 50 and a negative electrode 60 across separators 70. The positive electrode 50 has a foil-shaped positive electrode collector 52 and a positive electrode mix layer 54. Each separator 70 has a resin substrate layer 72 and a heat resistance layer 74. In the nonaqueous electrolyte secondary battery disclosed herein, the peel strength of a boundary between the resin substrate layer and the heat resistance layer is 16 N/m or more and 155 N/m or less, and the density of the positive electrode mix layer is 2.3 g/cc or more and 2.6 g/cc or less.

Abstract: A nonaqueous electrolyte secondary battery includes a negative electrode plate, a negative electrode current collector lead joined to the inner peripheral end of the negative electrode plate, and a negative electrode current collector-exposed part where a negative electrode active material layer is not formed at the outer peripheral-side end. The negative electrode current collector-exposed part at the outer peripheral end comes in contact with a battery case, and in a plane vertical to the axis of an electrode body, a line connecting the axis and the center of a positive electrode current collector lead does not coincide with a line connecting the axis and the center between the coating end of the outer peripheral-side negative electrode active material layer of the negative electrode plate and the terminal part of the outer peripheral-side positive electrode plate.

Abstract: A battery module is provided. The battery module includes: first and second bus bars arranged adjacent to each other to electrically connect battery packs adjacent to each other; and a bus bar cover covering and insulating the first and second bus bars from the outside thereof and insulating the first and second bus bars from each other, wherein the bus bar cover includes a hollow portion exposing a coupling hole of the first and second bus bars. Accordingly, sufficient insulation may be secured for the bus bars electrically connecting different battery packs, malfunction and safety accidents caused by the short circuit of the bus bars through which high-voltage charge/discharge currents flow may be prevented, and the insulation structure of the bus bars may be simplified by accommodating different adjacent bus bars together.

Abstract: The present application relates to a secondary battery, a method for manufacturing the same and an apparatus containing the same. Specifically, in the secondary battery the first negative electrode film comprises a first negative electrode active material, the second negative electrode film comprises a second negative electrode active material. The first negative electrode active material comprises natural graphite and satisfies: 6 m?·cm?A?12 m?·cm, the second negative electrode active material comprises artificial graphite and satisfies: 13 m?·cm?B?20 m?·cm, A is a powder resistivity of the first negative electrode active material tested at a pressure of 8 Mpa, and B is a powder resistivity of the second negative electrode active material tested at a pressure of 8 Mpa. The secondary battery of the present application can have better kinetic performance and longer cycle life while maintaining higher energy density.

Abstract: This secondary battery positive electrode includes: a positive electrode current collector; an intermediate layer provided on the positive electrode current collector; and a positive electrode mixture layer provided on the intermediate layer and including a positive electrode active material, wherein the intermediate layer includes a conductive material, a metal phosphate, and an inorganic compound which is not a metal phosphate and has a lower oxidizing power than the positive electrode active material.

Abstract: Interfacial films, which are both electronic conducting and ion conducting, for anode films are provided. The one or more protective films described herein may be mixed conduction materials, which are both electronic conducting and ion-conducting. The one or more protective films described herein may include materials selected from lithium transition metal dichalcogenides, Li9Ti5O12, or a combination thereof. The lithium transition metal dichalcogenide includes a transition metal dichalcogenide having the formula MX2, wherein M is selected from Ti, Mo, or W and X is selected from S, Se, or Te. The transition metal dichalcogenide may be selected from TiS2, MoS2, WS2, or a combination thereof. The lithium transition metal dichalcogenide may be selected from lithium-titanium-disulfide (e.g., LiTiS2), lithium-tungsten-disulfide (e.g., LiWS2), lithium-molybdenum-disulfide (e.g., LiMoS2), or a combination thereof.

Abstract: An electrode for a lithium-ion electrochemical cell comprises silicon particles and carbon particles coated on a conductive current collector. The silicon and carbon particles being bound to each other and to the current collector by a cross-linked binder formed from a combination of a poly(carboxylic acid) such as poly(acrylic acid) and a branched polyethyleneimine. A method of preparing the anode also is described.

Abstract: A non-aqueous electrolyte secondary battery includes: an electrode group including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode; a tape for securing at least a wound end of the electrode group; and a non-aqueous electrolyte. The negative electrode, at least in a charged state, includes a lithium metal and/or a lithium alloy. The tape has a tensile strength of 20 N/10 mm or less at an elongation ratio of 200% or more.

Abstract: A cathode may be formed form a first porous carbonaceous region and a second porous carbonaceous region positioned adjacent to the first porous carbonaceous region. Each region may have a corresponding concentration level of porous carbonaceous materials. Specifically, each region may include pores and non-tri-zone particles and tri-zone particles. In one implementation, each tri-zone particle may include carbon fragments intertwined with each other and separated from one another by mesopores. Each tri-zone particle may also include a deformable perimeter that may coalesce with adjacent non-tri-zone particles or tri-zone particles. In some aspects, the tri-zone particles may include aggregates formed by several tri-zone particles joined together. In some aspects, mesopores may be interspersed throughout the aggregates. Each tri-zone particle may also include agglomerates, where each agglomerate includes a multitude of the aggregates joined together.

Abstract: A battery is disclosed that includes an anode, a graded interface layer disposed on the anode, a cathode positioned opposite to the anode, an electrolyte, and a separator. The anode may output lithium ions during cycling of the battery. A graded interface layer may be disposed on the anode and include a tin fluoride layer. A tin-lithium alloy region may form between the tin fluoride layer and the anode. The tin-lithium alloy region may produce a lithium fluoride uniformly dispersed between the anode and the tin fluoride layer during operational cycling of the battery. The electrolyte may disperse throughout the cathode and the anode. The separator may be positioned between the anode and cathode. In some aspects, the battery may also include lithium electrodeposited on one or more exposed surfaces of the anode.

Abstract: The invention provides an all-solid-state battery stack with high voltage. The all-solid-state battery stack of the disclosure has a plurality of monopolar battery units stacked together via insulator layers. The monopolar battery unit also has a first current collector layer, a first active material layer, a solid electrolyte layer, a second active material layer, a second current collector layer, a second active material layer, a solid electrolyte layer, a first active material layer and a first current collector layer, stacked in that order. The plurality of monopolar battery units are connected together in series.