Conductive additive dispersions for batteries, pastes for positive electrodes, positive electrodes for secondary batteries, secondary batteries, and conductive additive dispersants.

Abstract

A conductive additive dispersion composition for batteries contains a conductive additive, a cellulose ether, and an N-methyl-2-pyrrolidone; the aforementioned cellulose ether is a cellulose ether derived from a portion of the hydroxyl group of cellulose etherified by (i) one or more substituents selected from the group consisting of methyl, ethyl, hydroxyethyl, and hydroxypropyl, and the other portion of the hydroxyl group of cellulose etherified by (ii) the substituents represented by the following general formula (1); the aforementioned cellulose ether has a viscosity of 3 mPa·s to 60000 mPa·s in a 2% by mass aqueous solution at 20°C; (where R represents an alkyl group having 10 to 22 carbon atoms) This conductive additive dispersion composition for batteries can contain a relatively high concentration of conductive additives with high agglomeration properties, such as carbon nanotubes, in a uniform and well dispersed state while reducing the amount of polymeric dispersant added.