Abstract: Provided are an electrode binder composition that provides an electrode that exhibits high durability even when an active material that shows a large volume change is used, an electrode coating liquid composition containing the electrode binder composition, a power storage device electrode including an electrode mixture layer containing a solid of the electrode coating liquid composition, and a power storage device including the power storage device electrode. An electrode binder composition includes (A) a polyurethane, (B) a fibrous nanocarbon material having an average fiber length of 0.5 ?m or more, and (C) water. The polyurethane is obtained by reacting together (a) a polyisocyanate, (b) a polyol, (c) a compound having one or more active hydrogen groups and a hydrophilic group, and (d) a chain extender. (b) contains an olefinic polyol having 1.5 or more active hydrogen groups and/or a carbonate diol having less than 6 carbon atoms between carbonate bond chains.

Abstract: Provided are an electrode binder composition that provides an electrode that exhibits high durability even when an active material that shows a large volume change is used, a power storage device electrode produced using the electrode binder composition, and a power storage device including the power storage device electrode. An electrode binder composition contains (A) one or more polymers selected from the group consisting of fluoropolymers, butadiene polymers, and thermoplastic elastomers, (B) a fibrous nanocarbon material having an average fiber diameter of 0.5 nm or more and 20 nm or less and a fiber length of 0.5 ?m or more and 1 mm or less, (C) a cellulose material, (D) a nanocellulose fiber, and (E) water. The mass ratio between (A) and (B) is (A)/(B)=60/40 to 98/2.

Abstract: Provided is a nanocarbon dispersion having good dispersibility of nanocarbon. A nanocarbon dispersion according to an embodiment includes (A) nanocarbon, (B) a naphthalenesulfonic acid condensate which is at least one selected from the group consisting of alkylnaphthalenesulfonic acid-formaldehyde condensates, a naphthalenesulfonic acid-formaldehyde condensate, formaldehyde condensates of an alkylnaphthalenesulfonic acid and naphthalenesulfonic acid, and salts thereof and which has a number-average molecular weight of 470 to 3,000, (C) an anionic water-soluble polymer, (D) an organic solvent having an O/I of less than 1.00, the O/I being a ratio of an organic value to an inorganic value in an organic conceptual diagram, and (E) water.

Abstract: A technology related to a binder that exhibits good ionic conductivity, binding properties, and discharge retention rate is provided. An aqueous polyurethane resin dispersion for binders that are used in lithium secondary batteries is an aqueous polyurethane resin dispersion including a polyurethane resin dispersed in water, the polyurethane resin being obtained by reacting a polyisocyanate compound (a), a compound (b) having two or more active hydrogen groups, a compound (c) having a hydrophilic group and one or more active hydrogen groups, and a chain extender (d) . The compound (b) contains a polyolefin (b1) having two or more active hydrogen groups and a polycarbonate (b2) having two or more active hydrogen groups and having 6 or less consecutive carbon atoms. A crosslink density per molecular weight of 1,000 of a resin solid component contained in the aqueous polyurethane resin dispersion is 0.02 mol/kg or more and 0.28 mol/kg or less.

Abstract: A technology which exhibits a low internal resistance and good output characteristics is provided. An aqueous polyurethane resin dispersion for a secondary battery separator includes an aqueous polyurethane resin dispersion containing a polyurethane resin dispersed in water, the polyurethane resin being obtained by reacting a polyol, a polyisocyanate compound, and a chain extender. The polyol contains a polycarbonate polyol. The polyurethane resin has a crosslink density of 0.02 mol/kg or more and 0.28 mol/kg or less.

Abstract: A composition that includes a dispersion stabilizer for an electrode coating liquid for a power storage device is provided. The composition has superior ability to stably disperse an electrode active material and a conductive material, and makes it possible to manufacture a uniform electrode, even when a dispersion device that has weak shear force is used. A dispersant for an electrode coating liquid for a power storage device, the dispersant being characterized by containing cellulose fibers that satisfy (a)-(c). (a) The number average width of the short widths is 2-200 nm. (b) The aspect ratio is 7.5-250. (c) Cellulose I crystals are included and the crystallinity thereof is 70%-95%.

Abstract: Provided are an electrode binder composition that provides an electrode that exhibits high durability even when an active material that shows a large volume change is used, a power storage device electrode produced using the electrode binder composition, and a power storage device including the power storage device electrode. An electrode binder composition contains (A) one or more polymers selected from the group consisting of fluoropolymers, butadiene polymers, and thermoplastic elastomers, (B) a fibrous nanocarbon material having an average fiber diameter of 0.5 nm or more and 20 nm or less and a fiber length of 0.5 ?m or more and 1 mm or less, (C) a cellulose material, (D) a nanocellulose fiber, and (E) water. The mass ratio between (A) and (B) is (A)/(B)=60/40 to 98/2.

Abstract: Provided are an electrode binder composition that provides an electrode that exhibits high durability even when an active material that shows a large volume change is used, an electrode coating liquid composition containing the electrode binder composition, a power storage device electrode including an electrode mixture layer containing a solid of the electrode coating liquid composition, and a power storage device including the power storage device electrode. An electrode binder composition includes (A) a polyurethane, (B) a fibrous nanocarbon material having an average fiber length of 0.5 ?m or more, and (C) water. The polyurethane is obtained by reacting together (a) a polyisocyanate, (b) a polyol, (c) a compound having one or more active hydrogen groups and a hydrophilic group, and (d) a chain extender. (b) contains an olefinic polyol having 1.5 or more active hydrogen groups and/or a carbonate diol having less than 6 carbon atoms between carbonate bond chains.

Abstract: An electrode coating liquid composition that contains an electrode active material, a conductive auxiliary, a dispersant, and a binding agent. The dispersant contains cellulose fibers that satisfy (a)-(c). A total amount of the dispersant and the binding agent is 0.5 mass % or more and 15 mass % or less with respect to 100 mass % of the solid content of the electrode coating liquid composition. (a) the number average width of the shortest widths is 2 nm or more and 200 nm or less. (b) the aspect ratio is 7.5 or more and 75 or less. (c) cellulose I crystals are included and the crystallinity thereof is 70% or more and 95% or less.

Abstract: Provided is a lithium-ion battery or lithium-ion capacitor electrode material that can compensate for the drawbacks of a hydrophobic active material, that can impart hydrophilicity to the hydrophobic active material, and that can exhibit excellent dispersibility without deteriorating electrode characteristics. Specifically provided is an electrode material for a lithium-ion battery or a lithium-ion capacitor, the electrode material comprising a composite powder in which a B component is supported or coated on a surface of an A component, the A component comprising a material capable of electrochemically occluding and releasing lithium ions, the B component being sulfur-modified cellulose, and the B component being contained in an amount of 0.01 mass % or more based on 100 mass % of the total amount of the A component and the B component.

Abstract: An electrode coating liquid composition that contains an electrode active material, a conductive auxiliary, a dispersant, and a binding agent. The dispersant contains cellulose fibers that satisfy (a)-(c). A total amount of the dispersant and the binding agent is 0.5 mass % or more and 15 mass % or less with respect to 100 mass % of the solid content of the electrode coating liquid composition. (a) the number average width of the shortest widths is 2 nm or more and 200 nm or less. (b) the aspect ratio is 7.5 or more and 75 or less. (c) cellulose I crystals are included and the crystallinity thereof is 70% or more and 95% or less.

Abstract: A composition that includes a dispersion stabilizer for an electrode coating liquid for a power storage device is provided. The composition has superior ability to stably disperse an electrode active material and a conductive material, and makes it possible to manufacture a uniform electrode, even when a dispersion device that has weak shear force is used. A dispersant for an electrode coating liquid for a power storage device, the dispersant being characterized by containing cellulose fibers that satisfy (a)-(c). (a) The number average width of the short widths is 2-200 nm. (b) The aspect ratio is 7.5-250. (c) Cellulose I crystals are included and the crystallinity thereof is 70%-95%.

Abstract: Provided is a lithium-ion battery or lithium-ion capacitor electrode material that can compensate for the drawbacks of a hydrophobic active material, that can impart hydrophilicity to the hydrophobic active material, and that can exhibit excellent dispersibility without deteriorating electrode characteristics. Specifically provided is an electrode material for a lithium-ion battery or a lithium-ion capacitor, the electrode material comprising a composite powder in which a B component is supported or coated on a surface of an A component, the A component comprising a material capable of electrochemically occluding and releasing lithium ions, the B component being sulfur-modified cellulose, and the B component being contained in an amount of 0.01 mass % or more based on 100 mass % of the total amount of the A component and the B component.