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

Provided are a biofuel cell that has a low environmental load, is low cost, and exhibits good output characteristics, as well as an electrode for a biofuel cell, an enzyme electrode, and an electrode slurry for a biofuel cell that are suitably used therein. The biofuel cell according to the present invention is a biofuel cell that 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 (1) and an electrode binder (1), the cathode comprises a conductive material (2) and an electrode binder (2), at least one of the electrode binder (1) and the electrode binder (2) comprises a polymer (A), the polymer (A) comprises a first structural unit derived from a nonionic ethylenically unsaturated monomer (a1), a second structural unit derived from an anionic ethylenically unsaturated monomer (a2), and a third structural unit derived from a crosslinking agent (a3), and the crosslinking agent (a3) has two or more ethylenically unsaturated bonds in one molecule.