Conductive material dispersion, method for producing the same, and composition for secondary battery electrode, electrode film, secondary battery, and vehicle using conductive material dispersion
Assigneesartience Co., Ltd., Toyocolor Co., Ltd.
InventorsYu Morita, Tetsuro Izumiya, Yu Aotani
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Abstract
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.
Claims19
A conductive material dispersion comprising:
- a carbon nanotube;
- carboxymethyl cellulose or its salt;
- and
- water, wherein
- a specific surface area of the carbon nanotube is 490 m2/g or more,
- the carboxymethyl cellulose or its salt has a weight average molecular weight of 10,000 to 100,000 and an etherification degree of 0.5 to 0.9,
- a median diameter of particles in the conductive material dispersion is 0.5 μm or more and 2.0 μm or less, and
- a product of a complex elastic modulus (Pa) and a phase angle) (°) of the conductive material dispersion is 100 or more and 1,500 or less.
A conductive material dispersion comprising:
- a carbon nanotube;
- carboxymethyl cellulose or its salt;
- and
- water, wherein
- the carboxymethyl cellulose or its salt has a weight average molecular weight of 10,000 to 100,000 and an etherification degree of 0.5 to 0.9,
- a median diameter of particles in the conductive material dispersion is 0.5 μm or more and 2.0 μm or less,
- a product of a complex elastic modulus (Pa) and a phase angle (°) of the conductive material dispersion is 100 or more and 1,500 or less, and
- an amount of an acidic group of the carbon nanotube is 40 to 500 μmol/g.
A conductive material dispersion comprising:
- a carbon nanotube;
- carboxymethyl cellulose or its salt;
- and
- water, wherein
- the carboxymethyl cellulose or its salt has a weight average molecular weight of 10,000 to 100,000 and an etherification degree of 0.5 to 0.9,
- an amount of an acidic group of the carbon nanotube is 0.1 to 0.8 μmol/m2, and
- a product of a complex elastic modulus (Pa) and a phase angle) (°) of the conductive material dispersion is 100 or more and 1,500 or less.
Dependencies are inferred from the claim text.