Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).

Abstract: There is provided a method for producing a separator for an electricity storage device that includes a step of contacting a porous body formed from a silane-modified polyolefin-containing molded sheet with a base solution or acid solution, and a separator for an electricity storage device comprising a microporous film with a melted film rupture temperature of 180° C. to 220° C. as measured by thermomechanical analysis (TMA).

Abstract: This application relates to the field of batteries, and in particular, to an electrolytic solution and a lithium-ion battery, a battery module, a battery pack and an apparatus that adopt the electrolytic solution. This application provides an electrolytic solution, including an electrolyte and a solvent, and further including an additive A and an additive B. The additive A is selected from at least one of compounds whose chemical structural formula is denoted by Formula I, and the additive B is selected from at least one of compounds whose chemical structural formula is denoted by Formula II. By using the additive A and the additive B together, this application enables films to be formed on surfaces of a positive electrode plate and a negative electrode plate concurrently, thereby significantly improving cycle performance and high-temperature storage performance of the lithium-ion battery, and also ensuring excellent kinetic performance of the lithium-ion battery.

Abstract: A binder for an all-solid-state secondary battery that can control a decrease in ionic conductivity, is excellent in binding properties and oxidation resistance, and can realize favorable cycle life characteristics even under a high voltage; and a binder composition for an all-solid-state secondary battery containing the binder. A binder for an all-solid-state secondary battery includes a polymer (A) which includes a repeating unit (a1) derived from an unsaturated carboxylic acid ester (excluding an unsaturated carboxylic acid ester having a hydroxyl group) and a repeating unit (a2) derived from a compound having a tertiary amino group, a weight-average molecular weight (Mw) of the polymer (A) being from 250000 to 3000000, and an endothermic peak being observed at ?10° C. or lower when differential scanning calorimetry (DSC) is performed on the polymer (A) in accordance with JIS K 7121.

Abstract: A battery includes a positive electrode, a negative electrode, a positive electrode lead which is connected to the positive electrode, and a protective tape which covers the positive electrode lead. The protective tape includes a base material layer and an adhesive layer that is arranged on the base material layer; and the adhesive layer contains an adhesive material and a filler which contains at least one compound that is selected from among phosphoric acid group-containing compounds, boric acid group-containing compounds and silicic acid group-containing compounds.

Abstract: A battery cell system and method for manufacturing a battery cell system is provided. The battery cell system includes an electrode stack including a first anode with a first anode tab, a second anode with a second anode tab laterally offset from the first anode tab, a first cathode with a first cathode tab, and a second cathode with a second cathode tab laterally offset from the first cathode tab.

Abstract: A secondary battery includes a unit cell including an electrode assembly provided with a tab bundle and having a round portion, and a cap member in the vicinity of the round portion of the electrode assembly. The cap member includes a pair of first surfaces which are parallel to an upper surface and a lower surface of the electrode assembly, a pair of second surfaces which are parallel to both side surfaces of the electrode assembly, one third surface which connects the pair of first surfaces and the pair of second surfaces, and a contact member provided in an internal space formed by the pair of first surfaces, the pair of second surfaces, and the one third surface and in contact with the round portion of the electrode assembly. The third surface is provided with a through hole through which the tab bundle passes.

Abstract: A curable composition includes a polyol component comprising one or more polyols: a functional butadiene component; and a thermally conductive filler. The thermally conductive filler is present in an amount of at least 20 wt. %, based on the total weight of the curable composition. The curable composition has, upon curing, a thermal conductivity of at least 0.5 W/(mK).

Abstract: An electrolyte material is represented by Li4-3a-cbAlaMbFxClyBr4-x-y, wherein M is at least one selected from the group consisting of Mg, Ca, and Zr; c represents a valence of M; and the following five inequalities are satisfied: 0<a<1.33, 0?b<2, 0<x<4, 0?y<4, and (x+y)?4.

Abstract: The present disclosure relates to a separator, a method of preparing the separator, and a secondary battery comprising the separator, the separator including: a web structure of organic fibers; and a composite coating layer arranged on the organic fibers, wherein the composite coating layer includes heat-resistant inorganic particles and a hydrophilic organic compound.

Abstract: A method for preparing a film of solid polymer electrolyte, including: (i) providing a composition including, in one or more solvents, at least one (co)polymer of at least one cyclic monomer selected from lactones and cyclic carbonates with five to eight ring members; the (co)polymer or (co)polymers having free terminal hydroxyl functions; at least one crosslinking agent, at least one ionic conductive salt; and optionally, in the case of a crosslinking agent bearing at least one photosensitive reactive function, at least one photoinitiator compound; (ii) forming a dry film from the composition, in conditions unfavourable to crosslinking of the (co)polymer or (co)polymers; and (iii) bringing the film into conditions favourable to crosslinking of the (co)polymer or (co)polymers to form the film of solid polymer electrolyte. Also disclosed is a film of solid polymer electrolyte and use thereof in an electrochemical system, in particular in a lithium battery.

Abstract: Disclosed are a lithium secondary battery including: a positive electrode; a negative electrode; an electrolyte; and a separator including a separator substrate and a ceramic layer formed on one surface or both surfaces of the separator substrate. Particularly, the ceramic layer may include a first ceramic particle including an epoxide group and a second ceramic particle including an amine group, and the first ceramic particle may be chemically bonded to the second ceramic particle.

Abstract: A precipitated silica suitable for use in lead-acid battery separators having a good balance between mechanical properties and electrical resistivity. In particular, a precipitated silica characterised by a DOA oil absorption equal to or greater than 200 mL/100 g; a median aggregate size D50M equal to or lower than 8.7 ?m and equal to or greater than a parameter A whose value, expressed in microns, is calculated from equation (1): A=23.3?0.076×|DOA|, wherein |DOA| represents the numerical value of the DOA oil absorption expressed in mL/100 g.

Abstract: A metal or metal-ion battery composition is provided that comprises anode and cathode electrodes along with an electrolyte ionically coupling the anode and the cathode. At least one of the electrodes includes active material particles provided to store and release ions during battery operation. Each of the active material particles includes internal pores configured to accommodate volume changes in the active material during the storing and releasing of the ions. The electrolyte comprises a solid electrolyte ionically interconnecting the active material particles.

Abstract: The present disclosure relates to a method for manufacturing a solid-state battery, wherein slurry for a solid electrolyte layer is applied to each of the electrodes, and the electrodes are bound to each other before drying to obtain a solid-state battery. In the solid-state battery, each electrode is in close contact with the solid electrolyte membrane to provide excellent interfacial property, such as reduced resistance. In addition, the thickness of the solid electrolyte membrane may be controlled to a level of several microns to provide an effect of increasing the energy density of a unit cell.

Abstract: Disclosed are electrolyte compositions comprising a fluorinated acyclic carboxylic acid ester, lithium bis(fluorosulfonyl)imide (also called LiFSI); and at least one electrolyte salt. The electrolyte compositions are useful in electrochemical cells, such as lithium-ion batteries.

Abstract: A multilayer separator (200) for a lithium-ion battery having a structure including at least a polyolefin based substrate layer (204) forming the inner layer of the multilayer separator (200); a resin layer (203) stacked on both surface of the polyolefin substrate layer (204), the resin layer (203) being formed from a polyolefin; a cellulose fibers based outer layer (202) stacked on the surface of each resin layer (203).

Abstract: A vehicle body member includes a first cell portion including a first negative pole portion and a first positive pole portion disposed to be in contact with a surface of the first negative pole portion, a second cell portion including a second negative pole portion and a second positive pole portion disposed to be in contact with a surface of the second negative pole portion, an insulating layer disposed between the first cell portion and the second cell portion, a series connector connecting the first negative pole portion of the first cell portion and the second positive pole portion of the second cell portion in series, a positive pole current collector connected to the first positive pole portion of the first cell portion, and a negative pole current collector connected to the second negative pole portion of the second cell portion.

Abstract: A battery cell may be formed to include a surplus lithium. The surplus lithium may be disposed inside a cavity formed by winding a separator, a positive electrode, and a negative electrode to form a jelly roll of the battery cell. The surplus lithium may be discharged in order to pre-lithiate the battery cell. For example, the surplus lithium may be coupled with the positive electrode and discharged while the battery cell is at least partially charged. Alternatively, the surplus lithium may be coupled with the negative electrode and discharged while the battery cell is at least partially discharged. Moreover, the surplus lithium may be coupled with a negative current collector of the battery cell in order to prevent one or more chemical reactions triggered by an over discharge of the battery cell from corroding the negative current collector of the battery cell.

Abstract: The present disclosure relates to a multi-layer electrode including a current collector; and a multi-layer electrode material layer comprising n active material layers (wherein, n?2) formed on at least one surface of the current collector, wherein each of the active material layers contains an electrode active material and a binder, the binders in the respective active material layers are different from each other, and the multi-layer electrode material layer has a uniform porosity from first active material layer closest to the current collector to nth active material layer furthest from the current collector. The present disclosure also relates to a lithium secondary battery including the same.