Toyocolor Co., Ltd

Toyo Ink Sc Holdings Co., Ltd.

Artience Co., Ltd.

Yu Aotani

Yuta Suzuki

Yu Morita

Tetsuro Izumiya

Hirotomo Ito

Tomoaki Masuoka

Naoki Deguchi

Honami Hirabayashi

Atsushi Koseki

Tomohiko Hoshino

Akio Himizu

Yuma Nonoyama

Naoto Oka

Provided is a conductive material dispersion including: a conductive material containing at least one kind selected from the group consisting of a carbon nanotube and carbon black; carboxymethyl cellulose or its salt; and water. The carboxymethyl cellulose or its salt has a weight average molecular weight of 10,000 to 150,000 and an etherification degree of 0.5 to 0.9. A product of the complex elastic modulus (Pa) and the phase angle (°) of the conductive material dispersion is 100 or more and 1,500 or less.

Conductive material dispersion, method for producing the same, and composition for secondary battery electrode, electrode film, secondary battery, and vehicle using conductive material dispersion

A carbon nanotube dispersion liquid for nonaqueous electrolyte secondary battery is a carbon nanotube dispersion liquid containing carbon nanotubes, a dispersant and a solvent, and is characterized in satisfying (1) to (3) below: (1) the average outer diameter of the carbon nanotubes ranging from more than 3 nm to 25 nm; (2) the BET surface area of the carbon nanotubes ranging from 150 m/g to 800 m/g; and (3) the fiber length of the carbon nanotubes in the carbon nanotube dispersion liquid ranging from 0.8 μm to 3.5 μm.

Carbon nanotube dispersion liquid for nonaqueous electrolyte secondary battery, resin composition using the same, mixture slurry, electrode film, and nonaqueous electrolyte secondary battery

Provided is a dispersant containing a copolymer that includes an aliphatic hydrocarbon structural unit, a nitrile group-containing structural unit, and a substituted or unsubstituted carbamoyl group-containing structural unit. The aliphatic hydrocarbon structural unit includes an alkylene structural unit. The content of the aliphatic hydrocarbon structural unit is 40 mass % or more and less than 85 mass % based on the mass of the copolymer, the content of the nitrile group-containing structural unit is 15 mass % or more and 50 mass % or less based on the mass of the copolymer, and the content of the substituted or unsubstituted carbamoyl group-containing structural unit is 10 mass % or less based on the mass of the copolymer. The weight-average molecular weight of the polymer is 5,000 or more and 400,000 or less.

Dispersant, conductive material dispersion and slurry for electrode film

Provided are: a dispersant which has good dispersibility and reduces electronic resistance; and a battery having excellent characteristics, which uses this dispersant and is decreased in the ionic resistance and the reaction resistance. A dispersant contains a triazine derivative represented by general formula (1), and an amine or an inorganic base (in general formula (1), Ris as defined in the description).

Dispersant, dispersant composition, dispersion composition for batteries, electrode and battery

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Tokyo, Japan

Yu Aotani