Carbon-Encapsulated Iron Nanoparticles as a Magnetic Modifier of Bioanode and Biocathode in a Biofuel Cell and Biobattery

This work demonstrates the application of magnetic carbon-encapsulated iron nanoparticles (CEINs) for construction bioelectrodes in a biobattery and biofuel cell. It has been shown that are suitable material immobilization laccase (Lc) 1,4-naphthoquinone (NQ) fructose dehydrogenase (FDH). The system is stable; no leaching enzyme mediator from surface modified electrode was observed. onset catalytic reduction oxygen to water at 0.55 V, oxidation started ?0.15 V. A developed which zinc plate served as anode, cathode glassy carbon with nanoparticles, Nafion (Nf) layer. maximum power cell ca. 7 mW/cm2 0.71 V under external resistance 1 k?. open-circuit voltage (OCV) this 1.51 In cell, were used both on bioanode biocathode immobilize enzymes. coated 1,4-naphthoquinone, dehydrogenase, Nafion. parameters follows: 78 µW/cm2 0.33 20 k? resistance, 0.49 These enzymes worked effectively also biobattery.