Abstract: There is provided a method for producing an electrode body including a current collection foil, an electrode mixture layer, a heat resistant layer, and a separator layer are laminated in this order. The method includes applying a liquid heat resistant material forming the heat resistant layer to the electrode mixture layer on an electrode plate that is obtained by forming an electrode mixture layer on the current collection foil and disposing the porous separator layer on the liquid heat resistant material before the liquid heat resistant material according to the application is dried after applying the liquid heat resistant material.

Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.

Abstract: A method of producing a negative electrode sheet includes forming a fluoride coating on surfaces of a plurality of negative electrode active material particles by performing a fluorination treatment on the surfaces of the plurality of negative electrode active material particles; producing a negative electrode composite material containing a plurality of wet granules obtained by mixing and granulating the negative electrode active material particles with the fluoride coating on the surfaces, a binder, and water as a solvent; causing the negative electrode composite material to pass through a gap between two rollers that face each other, compressing the negative electrode composite material into a film, and attaching the film to a surface of a current collector foil; and forming a negative electrode mixture layer on the surface of the current collector foil by drying the film on the surface of the current collector foil.

Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.

Abstract: A strip-shaped electrode sheet includes an electrode foil including a strip-shaped foil exposed portion in which the electrode foil is exposed, a strip-shaped active material layer extending in a longitudinal direction, and a strip-shaped insulator layer containing insulating resin and formed on an insulator-layer support portion along a one-side layer edge portion of the active material layer and between the foil exposed portion of the electrode foil and an active-material-layer support portion. The insulator layer is located lower than a top face of the active material layer toward the electrode foil and includes a slant coating portion covering at least a lower portion of a one-side slant portion of the active material layer and a foil coating portion extending from the slant coating portion in a width-direction one side and covering the insulator-layer support portion of the electrode foil.

Abstract: An electrode includes: a current collector that is made of a conductive material; a mixture layer that contains an active material and is arranged on one surface of the current collector; a thermoplastic resin particle layer in which a plurality of insulating thermoplastic resin particles are arranged on the mixture layer; and a porous inorganic oxide particle layer that contains plural insulating inorganic oxide particles and is arranged on an edge surface of a laminate including the current collector, the mixture layer, and the thermoplastic resin particle layer. A melting point of the inorganic oxide particles is higher than a melting point of the thermoplastic resin particles.

Abstract: A method of producing an electrode body includes obtaining a state in which an electrode active material layer in a wet state which includes a first solid component containing electrode active material particles and a first liquid phase component and which includes the first solid component at a weight ratio in a range of 70 to 85% is present on the collecting foil, and applying an insulating particle paint which includes a second solid component containing insulating particles and a second liquid phase component and which includes the second solid component at a weight ratio in a range of 35 to 50% onto the electrode active material layer in the wet state, wherein a surface tension value of the first liquid phase component is in a range of 90 to 110% of a surface tension value of the second liquid phase component.

Abstract: A method of producing a negative electrode sheet includes forming a fluoride coating on surfaces of a plurality of negative electrode active material particles by performing a fluorination treatment on the surfaces of the plurality of negative electrode active material particles; producing a negative electrode composite material containing a plurality of wet granules obtained by mixing and granulating the negative electrode active material particles with the fluoride coating on the surfaces, a binder, and water as a solvent; causing the negative electrode composite material to pass through a gap between two rollers that face each other, compressing the negative electrode composite material into a film, and attaching the film to a surface of a current collector foil; and forming a negative electrode mixture layer on the surface of the current collector foil by drying the film on the surface of the current collector foil.

Abstract: An electrode body comprising a positive electrode mixture layer, a negative electrode mixture layer, and a thermoplastic-resin separator layer interposed therebetween is manufactured. A manufacturing method of the electrode body includes a preprocessing step of preprocessing a portion to be cut in a long-strip shaped integrated structure in which the separator layer as an accumulated layer of resin particles are interposed at least between the positive and negative electrode mixture layers such that the positive electrode mixture layer, the negative electrode mixture layer, and the separator layer are lowered their volume porosities to 10 to 20%, 10 to 20%, and 5% or less, respectively, and a cutting step of cutting the portion of the long-strip shaped integrated structure having been lowered the volume porosity by a cutting blade.

Abstract: An electrode body includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed on the positive electrode current collector. The negative electrode includes a negative electrode current collector, a negative electrode mixture layer disposed on the negative electrode current collector and an insulation layer disposed on the negative electrode mixture layer and containing insulation particles. An insulation layer containing the insulation particles is formed on a side surface of width-direction end of the negative electrode so as to cover the side surface of the end portion.

Abstract: There is provided a method for producing an electrode body including a current collection foil, an electrode mixture layer, a heat resistant layer, and a separator layer are laminated in this order. The method includes applying a liquid heat resistant material forming the heat resistant layer to the electrode mixture layer on an electrode plate that is obtained by forming an electrode mixture layer on the current collection foil and disposing the porous separator layer on the liquid heat resistant material before the liquid heat resistant material according to the application is dried after applying the liquid heat resistant material.

Abstract: A method of producing an electrode body includes obtaining a state in which an electrode active material layer in a wet state which includes a first solid component containing electrode active material particles and a first liquid phase component and which includes the first solid component at a weight ratio in a range of 70 to 85% is present on the collecting foil, and applying an insulating particle paint which includes a second solid component containing insulating particles and a second liquid phase component and which includes the second solid component at a weight ratio in a range of 35 to 50% onto the electrode active material layer in the wet state, wherein a surface tension value of the first liquid phase component is in a range of 90 to 110% of a surface tension value of the second liquid phase component.

Abstract: A gravure kiss coater 1 includes a paint feeder 30 placed along a small-diameter gravure roll 10 having an outside diameter D in a range of 45-150 mm. The paint feeder 30 includes a doctor blade 32, a case 31, and a coating feed path 34, 35. A distal end 32a of the doctor blade 32 is directed in a direction opposite to a direction of rotation of the small-diameter gravure roll 10, and the small-diameter gravure roll 10 is capable of contacting the substrate S within a range of rotation angles equal to or less than 90° from the distal end 32a of the doctor blade 32.

Abstract: A secondary battery 100 comprises a positive electrode current collector 221 and a positive electrode active material layer 223 applied on the positive electrode current collector 221 and containing at least a positive electrode active material. The lithium-ion secondary battery 100 further comprises a negative electrode current collector 241 provided so as to oppose the positive electrode current collector 221 and a negative electrode active material layer 243 applied on the negative electrode current collector 241 and containing at least a negative electrode active material. The lithium-ion secondary battery 100 is also formed with a porous insulating layer 245 which contains stacked resin particles having insulating properties and is formed so as to cover at least one of the positive electrode active material layer 223 and the negative electrode active material layer 243 (in this case, negative electrode active material layer 243).

Abstract: A double-sided coater 1 includes a first coater 5a coating a surface not contacting a guide roll 4b, and a second coater 5b coating another surface contacting the guide roll 4b. Each of the first and second coaters 5a and 5b includes a gravure kiss coater including a small-diameter gravure roll 10 and a coating liquid supplier 30. The guide roll 4b guides a substrate S from a vertical direction to a horizontal direction to allow the first coater 5a to coat the substrate S from a lateral point while the substrate S travels vertically, and to allow the second coater 5b to coat the substrate S from a lower point while the substrate S travels horizontally.

Abstract: A secondary battery 100 comprises a positive electrode current collector 221 and a positive electrode active material layer 223 applied on the positive electrode current collector 221 and containing at least a positive electrode active material. The lithium-ion secondary battery 100 further comprises a negative electrode current collector 241 provided so as to oppose the positive electrode current collector 221 and a negative electrode active material layer 243 applied on the negative electrode current collector 241 and containing at least a negative electrode active material. The lithium-ion secondary battery 100 is also formed with a porous insulating layer 245 which contains stacked resin particles having insulating properties and is formed so as to cover at least one of the positive electrode active material layer 223 and the negative electrode active material layer 243 (in this case, negative electrode active material layer 243).

Abstract: An electrode body comprising a positive electrode mixture layer, a negative electrode mixture layer, and a thermoplastic-resin separator layer interposed therebetween is manufactured. A manufacturing method of the electrode body includes a preprocessing step of preprocessing a portion to be cut in a long-strip shaped integrated structure in which the separator layer as an accumulated layer of resin particles are interposed at least between the positive and negative electrode mixture layers such that the positive electrode mixture layer, the negative electrode mixture layer, and the separator layer are lowered their volume porosities to 10 to 20%, 10 to 20%, and 5% or less, respectively, and a cutting step of cutting the portion of the long-strip shaped integrated structure having been lowered the volume porosity by a cutting blade.

Abstract: A manufacturing method and a manufacturing apparatus for a separator layer-coated electrode are provided capable of shortening the time required to cut out a separator layer-coated electrode with a laser beam. In a cutting process, a laser beam is irradiated to a laser irradiation target portion of a strip-shaped separator layer-coated electrode from a front-side separator layer side to cut a strip-shaped separator layer-coated electrode. Prior to the cutting process, a preheating process is conducted to preheat the front-side separator layer in the laser irradiation target portion.

Abstract: A secondary battery 100 comprises a positive electrode current collector 221 and a positive electrode active material layer 223 applied on the positive electrode current collector 221 and containing at least a positive electrode active material. The lithium-ion secondary battery 100 further comprises a negative electrode current collector 241 provided so as to oppose the positive electrode current collector 221 and a negative electrode active material layer 243 applied on the negative electrode current collector 241 and containing at least a negative electrode active material. The lithium-ion secondary battery 100 is also formed with a porous insulating layer 245 which contains stacked resin particles having insulating properties and is formed so as to cover at least one of the positive electrode active material layer 223 and the negative electrode active material layer 243 (in this case, negative electrode active material layer 243).

Abstract: An electrode includes: a current collector that is made of a conductive material; a mixture layer that contains an active material and is arranged on one surface of the current collector; a thermoplastic resin particle layer in which a plurality of insulating thermoplastic resin particles are arranged on the mixture layer; and a porous inorganic oxide particle layer that contains plural insulating inorganic oxide particles and is arranged on an edge surface of a laminate including the current collector, the mixture layer, and the thermoplastic resin particle layer. A melting point of the inorganic oxide particles is higher than a melting point of the thermoplastic resin particles.