A Nernstian Biosupercapacitor.

ABSTRACT: We propose the very first "Nernstian biosupercapacitor", a biodevice based on only one redox polymer: poly(vinyl imidazole-co-allylamine)[Os(bpy)₂ Cl], and two biocatalysts. At the bioanode PQQ-dependent glucose dehydrogenase reduces the Os³⁺ moieties at the polymer to Os²⁺ shifting the Nernst potential of the Os³⁺ /Os²⁺ redox couple to negative values. Concomitantly, at the biocathode the reduction of O₂ by means of bilirubin oxidase embedded in the same redox polymer leads to the oxidation of Os²⁺ to Os³⁺ shifting the Nernst potential to higher values. Despite the use of just one redox polymer an open circuit voltage of more than 0.45 V was obtained during charging and the charge is stored in the redo

SUBMITTER: Pankratov D 

PROVIDER: S-EPMC5132130 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature