Porous membrane slurry for secondary batteries, negative electrode for secondary batteries and method for producing negative electrode for secondary batteries

A method for producing a secondary battery negative electrode including a current collector, a negative electrode active material layer, and a porous membrane, the method comprising:

• applying a negative electrode slurry containing a negative electrode active material, a particulate negative electrode polymer, and water onto the current collector and then drying the negative electrode slurry to thereby obtain the negative electrode active material layer;
• applying a porous membrane slurry onto the negative electrode active material layer and drying the applied porous membrane slurry, the porous membrane slurry containing:
• non-conductive particles that are particles of a polymer that includes 50% by weight or more of a structural unit formed by polymerization of a (meth)acrylate and has a softening starting point or decomposition point of 175° C. or higher;
• a porous membrane polymer that is in a non-particulate form and has a cross-linkable group;
• and an organic solvent;
• and
• cross-linking the porous membrane polymer by heating.