Enzymeless multi-sugar fuel cells with high power output based on 3D graphene–Co3O4 hybrid electrodes
Prasad, Kenath Priyanka
Chan-Park, Mary B.
Date of Issue2013
School of Chemical and Biomedical Engineering
Biofuel cells (BFCs), which use enzymes as catalysts to harvest energy from green and sustainable fuels abundantly producible from biological systems, are promising next-generation energy devices. However, the poor stability and high specificity to only one fuel type of these bio-catalysts largely limits the practical use of current BFCs. In this contribution, we demonstrate a unique fuel cell which, equipped with two identical enzyme-free electrodes based on Co3O4 coated 3D graphene, is able to efficiently harvest electricity from various sweet biofuels (glucose, sucrose, or lactose). Taking advantage of the dual catalytic ability of nanostructured Co3O4 for both glucose oxidation and oxygen reduction as well as the exceptional electrical and structural properties of 3D graphene, our glucose-powered fuel cell, with good long-term stability, offers high open circuit voltage (∼1.1 V) and power density output (2.38 ± 0.17 mW cm−2).
Chemical and Biomedical Engineering
Physical Chemistry Chemical Physics
© 2013 the Owner Societies. This is the author created version of a work that has been peer reviewed and accepted for publication in Physical Chemistry Chemical Physics, published by Royal Society of Chemistry on behalf of the Owner Societies. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1039/c3cp51410b].