Provided is an electrode binder for a biofuel cell, which can provide an electrode slurry that has a low environmental load, a conductive material of which being good in dispersibility, and is suitable for screen printing and allows production of a biofuel...

The present invention relates to a binder for an electrode of a secondary battery, including polymer particles in which two or more types of monomers are polymerized with two or more types of cross-linking agents with mutually different molecular weights. ...