Novel Composite Polymer Electrode for Enzyme-Based Biofuel Cell

Novel composite polymer layers were used for enzyme-based biofuel cell electrode platform and their electrochemical properties were investigated. Polyaniline, one of the most widely used conductive polymers, was electropolymerized on a planar gold electrode in the presence of carboxydextran and/or carboxydextran-gold hybrid nanomaterials. These composite films showed the redox activity in neutral pH regions, which was confirmed with cyclic voltammetry. The composite films showed an excellent electrocatalytic activity toward the oxidation of ascorbic acid, indicating that these composite films are a good candidate for enzyme-based biofuel cell electrode.