| 摘要 |
The present invention relates to a binder for a secondary cell electrode, a slurry for a secondary cell electrode, and a secondary cell electrode. The popularity of secondary cells has been remarkable in recent years, and of these, the lithium ion secondary cell is being studied for use in automobiles, etc. Although a fluoropolymer has been conventionally used as the polymer binder for the production of an electrode of a lithium ion secondary cell, because, among other reasons, a fluoroplymer must be dissolved in an organic solvent, and large amounts must be added to obtain adhesive power, there have been problems such as organic solvent volatility and electrode conductivity interference. The present invention is intended to solve these problems by using, as the binder for a secondary cell electrode, a binder containing a copolymer latex obtained by emulsion polymerization of a monomer composition comprising specific amounts of an unsaturated carboxylic acid alkyl ester monomer, an ethylenic unsaturated carboxylic acid monomer, at least one monomer selected from the group consisting of aliphatic conjugated diene monomers and alkenyl aromatic monomers, and another monomer (other than a cyano group-containing vinyl monomer) copolymerizable with these monomers. |
