Abstract: Provided is an inorganic solid electrolyte material including sulfide-based inorganic solid electrolyte particles. In a frequency distribution of circularity of the particles where the circularity of the particles in the material is plotted on a horizontal axis and a number-based frequency is plotted on a vertical axis, a 10% cumulative value D10 is 0.54 to 0.80. In addition, a number-based median size d50 of the particles in the material is 0.1 to 10 ?m.

Abstract: A method for simultaneously forming alkali metal layers includes heating a laminate structure including a top layer, a bottom layer, and an alkali metal layer sandwiched between opposing facing surfaces of the top layer and the bottom layer. The laminate structure is heated to a peel temperature to at least partially melt the alkali metal layer and form a volume of molten alkali metal at the location of a peel site within the alkali metal layer. The top layer and the bottom layer apart from each other such that the alkali metal layer splits internally at the location of the peel site and is divided between the top layer and the bottom layer.

Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes active material particles, a first electro-conductive agent having a fibrous shape, and a second electro-conductive agent having a shape other than the fibrous shape. The active material particles include at least one compound selected from the group consisting of a monoclinic titanium-containing oxide and an orthorhombic titanium-containing composite oxide. The active material-containing layer satisfies formula (1): 0.6?B/A?1.5. A is a thickness [?m] of the active material-containing layer. B is a maximum length [?m] of the first electro-conductive agent in the active material-containing layer.

Abstract: A negative electrode material for a lithium-ion secondary battery includes: graphitic particles having a standard deviation of degree of circularity of from 0.05 to 0.10 in a range in which a cumulative frequency of degree of circularity from a lower degree of circularity is from 10% by particle to 90% by particle in a cumulative frequency distribution with respect to a degree of circularity obtained using a flow-type particle analyzer; and carbon particles having an average degree of circularity of 0.94 or less, the average degree of circularity being obtained using a flow-type particle analyzer.

Abstract: A cathode electrode assembly is disclosed, the cathode electrode assembly comprising an active material, a current collector, a conductive additive substance, and a polynorbornene-based (PNB) polymer binder configured to bind the active material and the conductive additive substance and maintain electrical contact between the active material and the conductive additive substance with the current collector. An alternative cathode electrode assembly comprising active material, a current collector, a conductive additive substance, a PNB polymer binder, and at least one polyacrylic acid (PAA) side chain configured to interface with the PNB polymer binder is also disclosed. A functional group is further disclosed, the functional group being configured to interface with a binder in a cathode electrode assembly of an electric battery system, the functional group comprising at least one PAA side chain.

Abstract: Provided is a low-cost electrochemical element that has excellent performance, reliability, and durability. Also, provided is a manufacturing method for an electrochemical element including a metal substrate (metal support) and an electrode layer formed on/over the metal substrate. The method includes an electrode layer forming step of forming an electrode layer having a region with a surface roughness of 1.0 ?m or less on/over the metal substrate, and an electrolyte layer forming step of forming an electrolyte layer by spraying aerosolized metal oxide powder onto the electrode layer.

Abstract: Provided are a binder composition, an electrode, a battery and a power consuming device. The binder composition comprises a fluoropolymer A and a copolymer B, wherein the copolymer B comprises a structural unit derived from a monomer containing a cyano group and a structural unit derived from a monomer containing an ester group. The binder of the present application has a strong bonding force, and the cycling performance of the secondary battery comprising same is excellent.

Abstract: This disclosure provides systems, methods, and apparatus related to lithium-ion batteries. In one aspect, a method includes synthesizing an intermediate selected from a group of a nickel-manganese-cobalt nitrate, a nickel-manganese-cobalt acetate, a nickel-manganese-cobalt sulfate, a nickel-manganese-cobalt chloride, and a nickel-manganese-cobalt phosphate. The intermediate is mixed with a lithium salt selected from a group of LiOH, LiCl, LiNO3, LiSO4, LiF, LiBr, Li3PO4, Li2CO3, and combinations thereof to form a mixture. The mixture is annealed at a sequence of temperatures and times to form a plurality of single crystals of a lithium nickel-manganese-cobalt oxide, with no cooling of the mixture between operations of the sequence of temperatures and times.

Abstract: A traction battery of an electrically or semi-electrically driven vehicle includes several battery modules arranged one behind the other in a longitudinal direction of the vehicle. Each of the battery modules extends in a transverse direction of the vehicle between a left and a right vehicle longitudinal support, as well as a central battery control device connected to the battery modules. Each of the battery modules includes on its two opposing front faces a connection region with an electrical connector configured for electrical contacting. The traction battery includes, in the region of each of the two front faces of the battery modules, at least one respective busbar, which extends transversely to the connection regions and parallel to one of the vehicle longitudinal members and is configured so as to electrically connect at least some of the battery modules to one another and/or to the central battery control device.

Abstract: A solid lithium cell is formed by stacking an etched copper substrate, a layer of graphite, an electrolyte, and a layer of nickel, manganese, and cobalt oxides. The electrolyte is in contact with the graphite layer and the layer of nickel, manganese, and cobalt oxides. The copper substrate forms the anode of the cell. The layer of nickel, manganese and cobalt oxides forms the cathode of the cell. The electrolyte is a solid lithium-based electrolyte. The graphite layer has a first solid electrolyte interface produced during a pre-lithiation with a liquid lithium-based electrolyte and a second solid electrolyte interface produced during a pre-lithiation with the solid lithium-based electrolyte.

Abstract: A battery packaging material includes a laminate with at least a base layer, an aluminum alloy foil layer, and a heat-fusible resin layer in this order, and in which the aluminum alloy foil layer satisfies the chemical composition in JIS A8021 and has a Si content of no higher than 0.08 mass %.

Abstract: An electrode assembly, a battery cell, a battery, and an electric device are provided. The electrode assembly includes two electrode sheets having opposite polarities and a separator used for separating the two electrode sheets, the two electrode sheets and the separator being wound in a winding direction to form a main body and two tabs. The tabs and the main body are arranged in a first direction; each tab comprises a plurality of tab portions arranged at intervals in the winding direction; the tab portions are bent relative to the first direction; at least parts of the plurality of tab portions are stacked in the first direction; and a protrusion is formed on at least one side of each tab portion in the thickness direction thereof.

Abstract: An anode for a secondary battery and a jelly-roll type electrode assembly including the anode. The anode includes an anode current collector that satisfies a creep rate condition represented by Formula 1 within a certain range. When the anode is applied to the jelly-roll type electrode assembly, deformation and/or expansion of electrode assembly can be controlled, even if it contains a silicon-containing anode active material because the stress generated from the exterior is significantly low. It is possible to ensure excellent safety because the stress accumulated in the anode current collector is greatly reduced, which lowers the risk of an internal disconnection of the electrode assembly.

Abstract: An anode-solid electrolyte sub-assembly for an all-solid secondary battery, the anode-solid electrolyte sub-assembly including: an anode current collector; an anode material layer on the anode current collector; and a solid electrolyte on the anode material layer and opposite the current collector, wherein the anode material layer includes an interlayer, which contacts the solid electrolyte and includes a composite including a first metal material; and a first anode active material layer on the interlayer and opposite the anode current collector, the first anode active material layer including a lithium metal, a lithium alloy, or a combination thereof, wherein the lithium metal or the lithium alloy have a particle size greater than the particle size of the first metal material.

Abstract: A thermal insulation sheet between battery cells for an electric automobile includes silica aerogel and a fiber, and has a plurality of holes on one surface and another surface in a thickness direction. A ratio of the number of holes on the one surface to the number of holes on the other surface is preferably 1.3 or more.

Abstract: A pouch film stack according to the present invention includes a base layer, a gas barrier layer, and a sealant layer stacked in that order. The sealant layer includes a first sealant layer located adjacent to the gas barrier layer and a second sealant layer stacked on the first sealant layer. A percentage difference in yield strength between the first and second sealant layers (?Y) is 66% to 120%, where ?Y is defined as: {(Yield strength of second sealant layer?Yield strength of first sealant layer)/Yield strength of first sealant layer}×100.

Abstract: A battery module includes a cell assembly including a plurality of battery cells, a lower case having an open upper portion and including an accommodating space, an upper case coupled to the lower case and including a connection hole to communicate with the accommodating space, an upper cover coupled to the upper case, forming a buffering space between the upper cover and the upper case by being spaced apart from the upper case, and including a discharge hole perforated such that the buffering space communicates with the outside, a partition member located in the buffering space to form a movement path extending from the connection hole to the discharge hole, and a coupling member located on the movement path, configured to be coupled to the partition member, and including a movement space formed by perforating a body of the coupling member.

Abstract: A silicon-based negative electrode material, a preparation method therefor, and an application thereof in a lithium ion battery are provided. A lithium ion battery contains the silicon-based negative electrode material. The negative electrode material contains a silicon-containing material and a phosphorus-containing coating layer at the surface of the silicon-containing material. The phosphorus-containing coating layer contains a polymer that has polycyclic aromatic hydrocarbon structural segments. The negative electrode material exhibits improved initial coulombic efficiency, reversible charging specific capacity, cycle charging capacity retention and conductivity. When used in the lithium ion battery, the negative electrode material may improve the energy density of the battery.

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.

Abstract: The present disclosure provides a battery cell and a battery, wherein the battery cell comprises: a battery cell body and a film casing, the film casing being wrapped around the exterior of the battery cell body, the battery cell body comprising a negative electrode plate, the negative electrode plate comprising a first current collector and a first coating, the first coating comprising graphite, the film casing having a plurality of vertices, each vertex comprising a first edge corner portion, a second edge corner portion, and a third edge corner portion intersected; the film casing and the battery cell body satisfy: 750?(abc)/(Wa×Wb×Wc)?90000. The disclosure solves the technical problem that film casings are prone to fracture and damage.