Carboxymethyl cellulose or its salt for electrode of non-aqueous electrolyte secondary battery, and aqueous solution thereof

摘要

The present invention provides a carboxymethyl cellulose or a salt thereof that can prevent defects such as streaks and pinholes that can occur in the obtained electrode when used as a binder for an electrode of a nonaqueous electrolyte secondary battery. . In the present invention, 2 liters of a 0.3% by mass aqueous solution of the carboxymethyl cellulose or a salt thereof having a dry mass B is prepared and filtered through a 250-mesh filter under a reduced pressure condition of −200 mmHg, and on the filtered filter. Provided is a carboxymethyl cellulose or a salt thereof, and a use thereof, wherein the ratio of the dry mass A to the dry mass B is less than 50 ppm when the dry mass A of the residue is measured.