Abstract: This application discloses a negative current collector, a negative electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The negative current collector includes a support layer and a metal conductive layer that is disposed on at least one of two opposite surfaces of the support layer in a thickness direction of the support layer. A density of the support layer is less than a density of the metal conductive layer; and the density of the metal conductive layer is 8.0 g/cm3 to 8.96 g/cm3. A thickness D1 of the metal conductive layer is 300 nm?D1?2 ?m. When a tensile strain of the negative current collector is 2.5%, a sheet resistance growth rate T of the metal conductive layer is T?5%.

Abstract: A secondary battery includes a power generation element including a plurality of electrodes. The electrodes are stacked on each other in a stacking direction with a separator interposed therebetween. Each of the electrodes includes a current collector led out in a first direction intersecting the stacking direction. Each of a plurality of current collectors led out in the first direction includes an end part, and the end part includes a first bent part that is bent in a second direction intersecting the first direction. Each of a plurality of first bent parts overlaps and is in contact with an adjacent first bent part in the second direction. At least one of the first bent parts terminates at a middle point on an end face along the second direction of the power generation element.

Abstract: The present disclosure relates to an energy storage device comprising: a housing for accommodating an electrolyte; an electrode element accommodated inside the housing; a case coupled to one side of the housing; and an electrode terminal inserted into the case so as to be electrically connected to the electrode element, wherein the case comprises: a base part having a through-hole into which the electrode terminal is inserted; and a sealing part coupled to the base part so as to seal the space between the base part and the electrode terminal, and the sealing part includes a terminal sealing member located at the through-hole so as to come into close contact with the electrode terminal, thereby sealing the space between the base part and the electrode terminal.

Abstract: Provided are a secondary battery, a battery module, a battery pack and an electrical apparatus. The secondary battery includes a positive electrode plate and a non-aqueous electrolyte solution. A positive electrode active material includes an inner core and a shell cladding the inner core. The inner core includes Li1+xMn1?yAyP1?zRzO4. The shell includes a first cladding layer cladding the inner core and a second cladding layer cladding the first cladding layer. The first cladding layer includes pyrophosphate MP2O7 and phosphate XPO4. The second cladding layer includes carbon. The non-aqueous electrolyte solution includes a first additive. The first additive includes one or more compounds in a group consisting of a compound shown in Formula 1, a compound shown in Formula 2 and a compound shown in Formula 3. The rate performance, cycling performance and high temperature stability of a lithium manganese phosphate secondary battery are increased.

Abstract: A battery cell includes an electrode assembly and a packaging bag configured to accommodate the electrode assembly. The electrode assembly includes a first electrode plate, a separator, and a second electrode plate that are stacked. A first tab is disposed on the first electrode plate. The first tab protrudes from the packaging bag. The first tab includes a connecting portion accommodated in the packaging bag. A first insulation layer is disposed on the connecting portion. The first insulation layer includes a free end towards the electrode assembly.

Abstract: A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

Abstract: The present application relates to an electrode sheet, a battery cell and a battery. The electrode sheet includes a current collector and a protective layer. The current collector includes a coated region provided with an active material layer and an uncoated region without being provided with the active material layer. The protective layer is provided on at least a part of a surface of the uncoated region, and has a porosity of 0% to 95%. For the electrode sheet according to the present application, by providing the current collector with the protective layer, the contact resistance may be increased when the electrode sheet is short-circuited, and the discharge power and the thermal runaway probability of the battery cell may be reduced when the battery cell is internally short-circuited, thereby improving the safety performance of the battery cell.

Abstract: Embodiments of the present invention provide a lithium secondary battery including anode active material layers which have a multi-layered structure and include carbon-based active materials having different contents from each other, thereby improving mechanical stability and battery performance.

Abstract: An electrode assembly includes: a first electrode plate having a first electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the first electrode uncoated portion; a second electrode plate having a second electrode uncoated portion spaced apart from both ends in a longitudinal direction thereof, and a base tab on one surface of the second electrode uncoated portion; a separator between the first electrode plate and the second electrode plate; a tab cover tape attached to the one surfaces of the first electrode uncoated portion and the second electrode uncoated portion; an uncoated portion cover tape attached to each of the other surfaces of the first electrode uncoated portion and the second electrode uncoated portion; and an insulating tape attached onto the second electrode plate at a position corresponding to the first electrode uncoated portion.

Abstract: A battery can include an electrode assembly, a battery housing, a terminal and a cap. The electrode assembly can have a first electrode, a second electrode and a separator between the first electrode and the second electrode. Each of the first electrode and the second electrode can have a first portion including an active material corresponding to the separator, and a second portion exposed beyond the separator and not coated with the active material. The battery housing can have a first end with a first opening and a second end with a second opening opposite the first end. The terminal can be electrically connected to the second portion of the first electrode and exposed out of the battery housing through the first opening of the battery housing at the first end.

Abstract: Provided herein are detect-free solid-state separators which are useful as Li| ion-conducting electrolytes in electro-chemical cells and devices, such as, but not limited to, rechargeable batteries. In some examples, the separators have a Li+ ion-conductivity greater than 1*10?3 S/cm at room temperature.

Abstract: A lead tab for a secondary battery may include a metal plate and a plurality of concavo-convex patterns formed on a surface of the metal plate. The plurality of concavo-convex patterns may be formed through a surface treatment of applying predetermined laser light energy onto the surface of the metal plate. The external energy may have an output value decided on the basis of the material of the metal plate, and the surface of the metal plate may be treated with the decided output value.

Abstract: A solid state ionic conductive electrolyte membrane may include a multi-channel porous support structure and a solid-state ionic conductive electrolyte. The multi-channel porous support structure may define a porous wall structure separating a first plurality of channels from a second plurality of channels, and a solid-state ionic conductive electrolyte may be positioned within pores of the porous wall structure of the multi-channel structure.

Abstract: An electrode assembly, a battery, and a battery pack and a vehicle including the same are provided. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on an axis to define a core and an outer circumference. The first electrode includes a first portion coated with an active material and a second portion at a first side and adjacent the first portion, the second portion being exposed beyond the separator along a first axial direction of the electrode assembly. A part of the second portion is bent in a radial direction of the electrode assembly forming a first surface region including stacked layers of the second portion, and in a partial region of the first surface region, a number of the stacked layers of the second portion is 10 or more in the in the first axial direction.

Abstract: A battery includes an electrode assembly including a first electrode, second electrode, and a separator between the first electrode and the second electrode, the first electrode including a first region coated with an active material and a second region at a first side and adjacent to the first region, the second region being exposed beyond the separator, and at least part of the second region is an electrode tab; a housing including a first end with a first opening, the housing accommodating the electrode assembly; a first current collector including an edge portion on the electrode assembly, a second region coupling portion extending from the edge portion and coupled with the second region, and a terminal coupling portion spaced apart from the second region coupling portion; and a terminal coupled with the terminal coupling portion.

Abstract: A positive electrode for a lithium-sulfur secondary battery includes a positive electrode active material layer having an intaglio pattern formed therein. A method for manufacturing the same, and a lithium-sulfur secondary battery including the same are also provided. The positive electrode active material layer has a porosity of 50 to 65%. The intaglio pattern has a width of 1 to 100 ?m and a depth of 30 to 99% based on the thickness of the positive electrode active material layer. The volumetric ratio of the positive electrode active material layer and the intaglio pattern is 4:1 to 40:1. When the positive electrode is applied to a lithium-sulfur secondary battery, the energy density per unit volume can be remarkably improved.

Abstract: An electrode plate includes a first electrode tab, a second electrode tab, and an active material layer. The composite current collector includes a first metal layer, a second metal layer, and an insulation layer therebetween. The first electrode tab is on an edge of the first metal layer and extends beyond the insulation layer. The second electrode tab is on an edge of the second metal layer and extends beyond the insulation layer. The active material layer is disposed on the first metal layer and the second metal layer, and covers a portion of the first electrode tab on the first metal layer and a portion of the second electrode tab one the second metal layer. A battery cell and an electrochemical device including the electrode plate are also disclosed.

Abstract: An energy storage device may include an electrode assembly including electrodes and separators, wherein the electrodes and separators are alternately stacked in a vertical direction of the energy storage device; an external member accommodating the electrode assembly therein; and electrode leads joined to the electrodes provided in the electrode assembly, the electrode leads are provided in the external member, the electrodes include a positive electrode and a negative electrode, the electrode leads include: a positive electrode lead having one side joined to the positive electrode; and a negative electrode lead having one side joined to the negative electrode, first and second through holes are provided in upper and lower surfaces of the external member, respectively, in the vertical direction, and a portion of the positive electrode lead is provided to face the first through hole in the external member, and a portion of the negative electrode lead is provided to face the second through hole in the external

Abstract: A negative electrode for a lithium secondary battery including a negative electrode active material layer. The negative electrode active material layer is formed by steps of coating a negative electrode mixture slurry including spheroidized natural graphite particles as a negative electrode active material on at least one surface of a negative electrode current collector, followed by drying and pressing the negative electrode mixture slurry on the at least one surface of the negative electrode current collector. The spheroidized natural graphite particles include a plurality of pores. The negative electrode active material layer has a Brunauer-Emmett-Teller (BET) specific surface area of the negative electrode active material layer after the pressing is larger than a BET specific surface area of the negative electrode active material layer before pressing. A difference in the BET specific surface area before and after pressing ranges from 0.9 m2/g to 1.2 m2/g.

Abstract: A positive electrode for a secondary battery which is an example of the embodiment of the present invention comprises a collector, a protective layer formed on at least one surface of the collector, and a composite material layer formed on the protective layer. The protective layer has a first region and a second region. The first region includes inorganic particles and a conductive material. The second region includes inorganic particles and substantially does not include a conductive material, or includes inorganic particles and a conductive material, the content of the conductive material being less than the content of the conductive material in the first region.

Abstract: A positive electrode material for a lithium secondary battery includes a first positive electrode active material and a second positive electrode active material, both of which are lithium composite transition metal oxides containing transition metals. The first positive electrode active material has a larger average particle size (D50) than the second positive electrode active material, wherein a ratio (Li/Me)1 of the mole number of lithium with respect to the total mole number of transition metals of the first positive electrode active material is more than 1 to 1.5 or less, and a ratio (Li/Me)2 of the mole number of lithium (Li) with respect to the total mole number of transition metals of the second positive electrode active material is 0.9 to 1. The second positive electrode active material has a crystallite size of 180 nm or more.

Abstract: Disclosed herein are an electrode having improved electrode tab welding characteristics configured such that one or more non-coated electrode tabs are provided for a plurality of stacked electrodes having the same polarity in order to maintain welding safety in the case in which the number of electrode layers that are stacked is increased in order to achieve high output and capacity, and a secondary battery including the same. Consequently, it is possible to prevent a plurality of electrode tabs from being cut at the time of welding the electrode tabs. In addition, the lower end of an electrode lead that is welded to non-coated electrode tabs provided for a plurality of stacked electrodes having the same polarity is punched so as to correspond to the non-coated electrode tabs. Consequently, it is possible to improve flexibility for a step formed in the secondary battery electrode.

Abstract: A semiconductor device structure and method for forming the same is disclosed. The structure incudes a silicon substrate having at least one trench disposed therein. An electrical and ionic insulating layer is disposed over at least a top surface of the substrate. A plurality of energy storage device layers is formed within the one trench. The plurality of layers includes at least a cathode-based active electrode having a thickness of, for example, at least 100 nm and an internal resistance of, for example, less than 50 Ohms/cm2. The method includes forming at least one trench in a silicon substrate. An electrical and ionic insulating layer(s) is formed and disposed over at least a top surface of the silicon substrate. A plurality of energy storage device layers is formed within the trench. Each layer of the plurality of energy storage device layers is independently processed and integrated into the trench.

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.

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 roughness and/or thickness of the current collector, 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: An electrode assembly, a battery, a battery pack and a vehicle including the same are provided. In the electrode assembly, the uncoated portion of an electrode includes a segment region divided into a plurality of segments, and the segment region includes a plurality of segment groups separated by a group separation pitch along a winding direction. One end of the electrode assembly includes a plurality of segment alignments. In winding turns corresponding to the plurality of segment alignments, group separation pitches of segment groups disposed in a same winding turn are substantially identical, and separation pitches of the segment groups is greater in a winding turn of a region adjacent to the outer circumference of the electrode assembly than in a winding turn of a region adjacent to the core of the electrode assembly.

Abstract: An anode including a current collector and an anode active material layer on the current collector are provided. The anode active material layer includes first oriented particles having a first tilt angle ?1 inclined with respect to the direction of the current collector, and second oriented particles having a second tilt angle ?2 inclined with respect to the direction of the current collector. The first tilt angle ?1 and the second tilt angle ?2 are different and both not greater than 70°.

Abstract: A negative electrode including: a current collector; a first negative electrode active material layer positioned on at least one surface of the current collector for a negative electrode and containing a first carbonaceous active material; and a second negative electrode active material layer positioned on a surface of the first negative electrode active material layer and containing a silicon-based active material and carbon nanotubes. A lithium secondary battery including the negative electrode is also disclosed.

Abstract: A gel composition, in particular a gelled electrolyte, comprising: i) fumed alumina particles, wherein the mean primary particle size of the particle is from 5 to 50 nm and the BET specific surface area is from 40 to 400 m2/g; ii) at least two organic solvents; and iii) a lithium salt; wherein the amount of the alumina particles is 0.2-10% by weight based on the total weight of the gel composition. A method to prepare a gelled electrolyte, a Li-ion battery, a Li-ion battery and a device are also provided.

Abstract: Provided is a secondary battery which includes an electrode assembly having an electrode tab extended from an electrode current collector, wherein the electrode tab is provided with an insulation coating layer containing an inorganic filler and a binder, the binder has an electrolyte uptake more than 0% and less than 50%, and the electrolyte uptake is determined by a predetermined method. In the secondary battery according to the present disclosure, the insulation coating layer provided in the electrode tab includes a binder having a low electrolyte uptake, and thus the insulation coating layer has improved adhesion and is prevented from detachment from the electrode tab. As a result, it is possible to maintain an excellent insulation state and to minimize an internal short-circuit in a secondary battery, thereby ensuring safety.

Abstract: A lithium secondary battery comprises a cathode formed from a cathode active material including a first cathode active material particle and a second cathode active material particle, an anode and a separator interposed between the cathode and the anode. The first cathode active material particle includes a lithium metal oxide including a continuous concentration gradient in at least one region between a central portion and a surface portion. The second cathode active material particle includes a constant concentration composition.

Abstract: This application provides a positive-electrode plate, including a current collector, and a first active substance layer and a second active substance layer that are sequentially disposed on a surface of the current collector. The first active substance layer includes a first positive-electrode active material, and the first positive-electrode active material includes at least one of a compound represented by Formula (I) Li1+x1Mna1M1-a1O2-y1Ay1 or a compound represented by Formula (II) Li1+x2Mna2N2-a2O4-y2By2. The second active substance layer includes a second positive-electrode active material having a pH value of from 10˜12. In this application, the active substance layer that includes high-pH positive-electrode active material is disposed outside the active substance layer that includes a lithium manganese-based positive-electrode active material, so as to make a layered electrode plate.

Abstract: Disclosed is a battery. A battery according to various embodiments is characterized by comprising: a cathode including a cathode tab formed at one end; an anode disposed on one surface of the cathode and including an anode tab formed at one end; an electrode assembly including a first separator disposed between the cathode and the anode and separating the cathode from the anode, and a second separator having one surface disposed on the other surface of the cathode or the anode and including an extended portion extending from the other end of the cathode or the anode; and a pouch surrounding the electrode assembly, wherein the cathode, the anode, the first separator, and the second separator are wound so that the extended portion of the first separator is exposed to the outside, and an exposed surface of the extended portion is formed as an adhesive layer.

Abstract: In a lithium ion secondary battery (1), a positive electrode (2) and a negative electrode (3) are alternately adjacent to each other via separators (4) and (5). The positive electrode (2) includes a positive electrode current collector composed of a metal porous body, a first positive electrode active material (21) held on one side of the positive electrode current collector, and a second positive electrode active material (22) held on the other side. The negative electrode (3) includes a negative electrode current collector composed of a metal porous body, a first negative electrode active material (31) held on one side of the negative electrode current collector, and a second negative electrode active material (32) held on the other side. The first positive electrode active material (21) faces the first negative electrode active material (31), and the positive electrode active material (22) faces the second negative electrode active material (32).

Abstract: A terminal component includes a first metal and a second metal overlapped on the first metal, the first metal having a part to be connected to an internal terminal, and the second metal having a part to be exposed to the outside of a battery case. At an interface where the first metal and the second metal are overlapped, one of the first metal and the second metal has a protrusion having a flat top portion. The other metal is joined to the top portion. A cross section of the protrusion orthogonal to a projection direction of the protrusion is set such that fusing occurs when a current equal to or higher than a predetermined current value flows between the first metal and the second metal.

Abstract: The present application discloses a negative electrode plate including a negative electrode active material layer including a first active material layer; wherein in a first cross section in a thickness direction of the negative electrode plate, the first active material has a size a in a direction parallel to the metal conductive layer, the first active material has a size b in the thickness direction, satisfying 0.8?a/b?20; in a second cross section in the thickness direction of the negative electrode plate, the first active material has a size c in the direction parallel to the metal conductive layer, the first active material has a size d in the thickness direction, satisfying 0.8?c/d?20; and the first cross section is parallel to a first direction, the second cross section is parallel to a second direction, and the first direction intersects the second direction.

Abstract: A secondary battery includes: an electrode assembly including electrode sheets and a separator interposed between the electrode sheets; a pouch-like battery casing in which the electrode assembly is received; an electrode lead connected to the electrode assembly and protruding out from the battery casing; and a lead film covering the electrode lead and interposed between the electrode lead and the battery casing, wherein the lead film includes an outer layer covering the electrode lead and an inner layer disposed inside of the outer layer, and the inner layer includes a material having a higher air permeability as compared to the outer layer.

Abstract: An aluminum pouch film for a secondary battery and a method for manufacturing the aluminum pouch film are disclosed. The aluminum pouch film includes an aluminum layer; an outer resin layer formed on a first surface of the aluminum layer; an inner resin layer formed on a second surface of the aluminum layer; and an adhesive layer for adhering the aluminum layer to the inner resin layer, wherein the outer resin layer includes a copolymer of polyamide and polyimide.

Abstract: Embodiments relate to laser welding methods, monitoring methods, and monitoring systems for a secondary battery. A laser welding method for a secondary battery includes performing laser welding on a positive electrode base having a thin-film shape in which a plurality of positive electrode base tabs are formed at a side, a negative electrode base having a thin-film shape in which a plurality of negative electrode base tabs are formed at a side, and a thin-film multi-tab to be joined to each of the positive electrode base and the negative electrode base, a welded portion in which the multi-tab is welded with the positive electrode base and the negative electrode base being melting-joined by using a laser such that a plurality of welding spots is formed on the welded portion.

Abstract: An energy storage module comprising a plurality of electrochemical cells for storing electric energy and comprising at least one contacting device for electrically contacting the plurality of electrochemical cells. Each of the electrochemical cells has a first flat connection lug for contacting a first electrode of the respective electrochemical cell and a second flat connection lug for contacting a second electrode of the respective electrochemical cell. The electrochemical cells are arranged in a stacked formation and form a cell pack such that the first and second flat connection lugs extend outwards from two opposing sides of the cell pack in an at least substantially perpendicular manner. According to the invention, the at least one contacting device is substantially comb-shaped in particular and has a plurality of teeth which are formed and arranged such that a first or second connection lug is or can be received between two adjacent teeth.

Abstract: A multilayer electrode includes a current collector, a first electrode mixture layer disposed on at least one surface of the current collector, and a second electrode mixture layer disposed on the first electrode mixture layer. The first and second electrode mixture layers include one or more types of conductive materials. A porosity of the conductive material contained in the second electrode mixture layer is greater than that of the conductive material contained in the first electrode mixture layer. Ion mobility to the inside of an electrode may be improved while maintaining electrical conductivity, by including a conductive material having a relatively great average particle diameter and pores in the conductive material itself. Output characteristics of a lithium secondary battery and charging and discharging performance may be improved.

Abstract: Batteries according to embodiments of the present technology may include a housing including a first terminal disposed on a first side of the housing and a second terminal disposed on the first side of the housing. The batteries may include an electrode stack positioned within the housing. The electrode stack may include an anode current collector. The anode current collector may define an anode tab along a first side of the anode current collector, and be electrically coupled with the first terminal. The electrode stack may include a cathode current collector. The cathode current collector may define a cathode tab along a second side of the cathode current collector. The cathode tab may extend from the cathode current collector in a direction normal to a direction the anode tab extends from the anode current collector. The cathode tab may be electrically coupled with the second terminal.

Abstract: An electrode assembly for a rechargeable lithium battery and a rechargeable lithium battery including the same are disclosed. The electrode assembly for the rechargeable lithium battery includes: a negative electrode including a current collector; a negative active material layer; an organic-inorganic composite layer integrated with the negative active material layer, the negative active material layer including an organic layer and an inorganic layer; and a positive electrode, the negative active material layer including a first layer physically contacting the current collector, the first layer including a first carbon-based negative active material, and a second layer on the first layer, including a second carbon-based negative active material, wherein a DD value of the first layer is about 30% to about 90% of a DD value of the negative active material layer, and the DD values are defined by Equation 1.

Abstract: An energy storage device includes an electrode assembly having a negative electrode plate and a separator wound around a tubular core material. The core material has a first line part and a second line part extending along a first imaginary line and a second imaginary line parallel to a long side surface of a case, respectively. At least one of the first line part and the second line part has a curved portion that protrudes toward the other beyond the first imaginary line or the second imaginary line. An inner peripheral edge of the negative electrode plate is located at a position other than the curved portion in at least one of the first line part and the second line part.

Abstract: An electrode includes an electrode active material, wherein the electrode active material layer includes an electrode active material, polyvinylidene fluoride, and a conductive agent, wherein the conductive agent includes a carbon nanotube structure in which 2 to 5,000 single-walled carbon nanotube units are bonded to each other, and the carbon nanotube structure is included in an amount of 0.01 wt % to 0.5 wt % in the electrode active material layer. A secondary battery including the same, and a method of preparing the electrode are also provided.

Abstract: A battery plate assembly for a lead-acid battery is disclosed. The assembly includes a plates of opposing polarity each formed by an electrically conductive grid body having opposed top and bottom frame elements and opposed first and second side frame elements, the top frame element having a lug and an opposing enlarged conductive section extending toward the bottom frame element; a plurality of interconnecting electrically conductive grid elements defining a grid pattern defining a plurality of open areas, the grid elements including a plurality of radially extending vertical grid wire elements connected to the top frame element, and a plurality of horizontally extending grid wire elements, the grid body having an active material provided thereon. A highly absorbent separator is wrapped around at least a portion of the plate of a first polarity and extends to opposing plate faces. An electrolyte is provided, wherein substantially all of the electrolyte is absorbed by the separator or active material.

Abstract: A rechargeable battery includes a battery core, a connection member, and a gasket. The connection member includes a guide plate and a first connecting plate integrally formed on the guide plate and connected to a tab of the battery core. The first connecting plate is disposed in a bendable manner relative to the guide plate, and at least one indentation is present between the first connecting plate and the guide plate. The gasket is fastened to the first connecting plate and the tab. The tab is sandwiched between the first connecting plate and the gasket.

Abstract: A rechargeable battery includes a battery core and a connection member. The connection member includes a guide plate and a first connecting plate integrally formed on the guide plate and connected to a tab of the battery core. The first connecting plate is disposed in a bendable manner relative to the guide plate, and at least one indentation is present between the first connecting plate and the guide plate. The tab extends from a side of a core body of the battery core in a width direction. At least a portion of the guide plate protrudes, relative to the first connecting plate, towards the core body of the battery core to form a protrusion, and the protrusion abuts against the battery core.

Abstract: The present disclosure may obtain an electrode for an all-solid-state battery with low porosity by adjusting the concentration of an electrode active material layer-forming slurry and a solid electrolyte layer-forming slurry. The all-solid-state battery uses a solid electrolyte material, not a liquid electrolyte material, and thus it needs to have a close contact between the constituent materials of the battery such as an electrode active material and a solid electrolyte material, and when the manufacturing method according to the present disclosure is applied, the electrode active material layer is filled with the solid electrolyte material, bringing the components into close contact, thereby improving the interfacial resistance characteristics.

Abstract: Provided is a method of producing a slurry composition for a secondary battery positive electrode containing an organic solvent, a specific polymer, and a positive electrode active material satisfying a specific chemical composition. The specific polymer includes a nitrile group-containing monomer unit and a linear alkylene structural unit having a carbon number of 4 or more. The pH of an extract of the specific polymer that is obtained by a specific method is not lower than 3.5 and lower than 6.0. The positive electrode active material is an active material having a high nickel content ratio.