BIOFUEL CELL, ELECTRODE FOR BIOFUEL CELL, ENZYME ELECTRODE, AND ELECTRODE SLURRY FOR BIOFUEL CELL

A biofuel cell generates electricity by an oxidation-reduction reaction catalyzed by an enzyme, wherein the enzyme is immobilized on at least one of an anode and a cathode, the anode comprises a conductive material () and an electrode binder (), the cathode comprises a conductive material () and an electrode binder (), at least one of the electrode binder () and the electrode binder () comprises a polymer (A), the polymer (A) comprises a first structural unit derived from a nonionic ethylenically unsaturated monomer (a), a second structural unit derived from an anionic ethylenically unsaturated monomer (a), and a third structural unit derived from a crosslinking agent (a), and the crosslinking agent (a) has two or more ethylenically unsaturated bonds in one molecule.