Abstract: Disclosed is a stacked battery that can flow a larger rounding current in a short-circuit current shunt part than in an electric element when a short circuit occurs in the short-circuit current shunt part and the electric element in nailing, the stacked battery in which an electrical resistance of a current collector tab of the short-circuit current shunt part is smaller than an electrical resistance of a current collector tab of the electric element.

Abstract: Disclosed is an all-solid-state lithium ion secondary battery being excellent in cycle characteristics. The all-solid-state lithium ion secondary battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises an anode active material, an electroconductive material and a solid electrolyte; wherein the anode active material comprises at least one active material selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li; and wherein a bulk density of the solid electrolyte is 0.3 g/cm3 or more and 0.6 g/cm3 or less.

Abstract: Disclosed is a method for producing an all-solid-state lithium ion secondary battery being excellent in cycle characteristics. The production method may be a method for producing an all-solid-state lithium ion secondary battery, wherein the method comprises an anode mixture forming step of obtaining an anode mixture by drying a raw material for an anode mixture, which contains an anode active material, a solid electrolyte and an electroconductive material; and wherein, for the anode mixture after being dried in the anode mixture forming step, a voidage V of the inside of the anode mixture calculated by the following formula (1) is 43% or more and 54% or less: V=100?(D1/D0)×100??Formula (1).

Abstract: An objective of the present disclosure is to provide a stacked battery that suppresses sneak current caused by an unevenness of a short circuit resistance among a plurality of cells. The present disclosure provides a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; wherein a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; or a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.

Abstract: To suppress heat generation in a short-circuit current shunt part in a stacked battery that includes the short-circuit current shunt part, in the stacked battery 100 including at least one short-circuit current shunt part 10, and a stack 20 that includes a plurality of electric elements 20a, 20b which are stacked, the short-circuit current shunt part 10 includes a first part 10a that is provided on one end side in a stacking direction of the stack 20, a second part 10b that is provided on another end side therein, and a third part 10c that connects the first part 10a and the second part 10b; at the first part 10a, the first current collector layer 11 and the cathode current collector layer 21 have an electric connection part 14a but the second current collector layer 12 and the anode current collector layer 25 do not have any electric connection part, at the second part 10b, the second current collector layer 12 and the anode current collector layer 25 have an electric connection part 14b but the first curren

Abstract: A method for producing a solid-state secondary battery system comprising a lithium ion solid-state battery that comprises a cathode, an anode and a solid electrolyte layer disposed between the cathode and the anode, and a controller for controlling charge and discharge voltages of the lithium ion solid-state battery in use, the method comprising: obtaining an anode member from an anode material which contains at least elemental Si particles serving as an anode active material and a fibrous carbon serving as a conductive additive material, and in which the contained fibrous carbon is 4.8 vol % or more, obtaining a battery member by disposing a solid electrolyte member between the anode member and a cathode member and attaching them, and carrying out initial constant current charging on the battery member, at a charge rate of 1.0 C or more, to a voltage higher than a maximum charge voltage controlled by the controller.

Abstract: A main object of the present disclosure is to provide a method for producing an all solid state battery capable of satisfying both of improving capacity durability and suppressing the increase of an initial resistance. The above object is achieved by providing a method for producing an all solid state battery, the method comprising: a preparing step of preparing an all solid state battery including a cathode layer, a solid electrolyte layer, and an anode layer, in this order; and an initial charging step of initially charging the all solid state battery, wherein the anode layer includes a metal particle capable of being alloyed with Li, and having two kinds or more of crystal orientation in one particle, as an anode active material, and in the initial charging step, the all solid state battery is charged to a battery voltage of 4.35 V or more and 4.55 V or less.

Abstract: [Problem] To provide a method for the production of an all-solid-state battery using an alloy-based negative electrode active material in which it is possible to suppress degradation in performance of the all-solid-state battery during actual use while the restraint pressure during actual use of the all-solid-state battery is relatively small. [Solving Means] The method for producing an all-solid-state battery of the present disclosure produces an all-solid-state battery having a battery laminate comprising a positive electrode current collector layer, a positive electrode active material layer, a solid electrolyte layer, a negative electrode active material layer, and a negative electrode current collector layer laminated in this order, wherein the battery laminate is restrained in the lamination direction by an actual use restraint member. The negative electrode active material layer contains particles of an alloy-based negative electrode active material.

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: Disclosed is an all-solid-state lithium ion secondary battery excellent in cycle characteristics. The battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises anode active material particles, an electroconductive material and a solid electrolyte; wherein the anode active material particles comprise at least one active material selected from the group consisting of elemental silicon and SiO; and wherein, for the anode active material particles, a value A obtained by the following formula (1) is 6.1 or more and 54.8 or less: A=SBET×dmed×D??Formula (1) where SBET is a BET specific surface area (m2/g) of the anode active material particles; dmed is a median diameter D50 (?m) of the anode active material particles; and D is a density (g/cm3) of the anode active material particles.

Abstract: Provided is a laminate which is configured to suppress the cracking of the current collector and the active material layer at the time of peeling them off from each other, and which is configured to make it easy to recycle and repair them. Disclosed is a laminate comprising a current collector, an active material layer and an electrolyte layer in this order, wherein the current collector and the active material layer adhere to each other in a peelable manner, through a pressure-sensitive adhesive that shows plasticity at normal temperature (15° C. to 25° C.

Abstract: An all-solid state battery including at least one short-circuit current shunt part and a plurality of electric elements, the short-circuit current shunt part and the electric elements being stacked, wherein the shunt part includes a first and a second current collector layers, and an insulating layer between the first and second current collector layers, all being stacked, each of the electric elements includes a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer, all of these layers being stacked, the first current collector layer connected with the cathode current collector layer, the second current collector layer connected with the anode current collector layer, the electric elements are electrically connected with each other in parallel, and a plurality of sheets of metal foil, the one being arranged on a side wherein a nail penetrates in nail penetration testing.

Abstract: A main object of the present disclosure is to provide an all solid lithium battery with excellent capacity durability. The above object is achieved by providing an anode layer to be used in an all solid lithium battery, the anode layer comprising: a metal particle capable of being alloyed with Li, as an active material; and the metal particle has two kinds or more of crystal orientation in one particle.

Abstract: Provided is a laminate that is configured to suppress a deterioration in the all-solid-state battery even if the end part of the anode layer is cracked. The laminate may be a laminate comprising an anode layer, a solid electrolyte layer and a cathode layer in this order, wherein an area in a planar direction of the cathode layer is smaller than an area in a planar direction of the anode layer; wherein an end part of the cathode layer comprises, on the solid electrolyte layer, a thin film part having a smaller thickness than a thickness of a central part of the cathode layer; and wherein the end part of the cathode layer comprises, on the thin film part, a space part formed by a level difference between the thin film part and the central part.

Abstract: Disclosed is an all-solid-state battery that makes it possible for a larger rounding current flow into a short-circuit current shunt part than to each electric element when the short-circuit current shunt part and the electric elements short-circuit in nail penetration testing.

Abstract: Provided is an electrode laminate for all-solid-state batteries, which is configured to suppress the occurrence of short circuits in all-solid-state batteries and/or to suppress a decrease in the durability of all-solid-state batteries, and which is configured to suppress an increase in the resistance value of all-solid-state batteries. Disclosed is an electrode laminate for all-solid-state batteries, comprising: a current collector complex comprising adhesive portions and a current collector portion that comprises at least a current collector, and an active material layer disposed on the current collector complex, wherein an active material layer-side main surface of the current collector portion and active material layer-side main surfaces of the adhesive portions are formed to be one flat surface, and the current collector portion and the active material layer are attached by the adhesive portions.

Abstract: Disclosed is a stacked battery including at least one short-circuit current shunt part and electric elements, wherein: the shunt part includes first and second current collector layers, and an insulating layer provided between the first and second current collector layers, all of these layers being stacked; each power generation element includes a cathode current collector layer, a cathode material layer, an electrolyte layer, an anode material layer, and an anode current collector layer all of these layers being stacked; the first current collector layer is electrically connected to the cathode current collector layer and the second current collector layer to the anode current collector layer; the electric elements are electrically connected in parallel; and the shunt part next to the electric elements includes a PPTC layer between the first current collector layer and the insulating layer and/or between the second current collector layer and the insulating layer.

Abstract: A method of manufacturing an electrode laminate, which includes an active material layer and a solid electrolyte layer formed on the active material layer, includes: an active material layer forming step of forming an active material layer; and a solid electrolyte layer forming step of forming a solid electrolyte layer on the active material layer by applying a solid electrolyte layer-forming slurry to the active material layer and drying the solid electrolyte layer-forming slurry. In this method, a surface roughness Ra value of the active material layer is 0.29 ?m to 0.98 ?m when calculated using a laser microscope.

Abstract: An all-solid-state battery system comprising an all-solid-state battery comprising a positive electrode active material layer, a solid electrolyte layer, and a negative electrode active material layer, and a control device configured to control a charge-discharge voltage during use of the all-solid-state battery. The negative electrode active material layer includes alloy negative electrode active material particles. The amorphization degree of the alloy negative electrode active material particles is in the range of 27.8% to 82.8% and a ratio Z/W is in the range of 0.32 to 0.60, where Z is a controlled discharge capacity of the all-solid-state battery, and W is a theoretical capacity of the alloy negative electrode active material particles × a total weight of the alloy negative electrode active material particles × the amorphization degree.

Abstract: In an all-solid-state battery including at least one short-circuit current shunt part and at least one electric element which are stacked, when the battery is constrained, cracking etc. of the adhesive in the short-circuit current shunt pail is prevented.