Bioelectrocatalysis-based dihydrogen/dioxygen fuel cell operating at physiological pH

摘要: A biochemical fuel cell was constructed using H2 as to produce H2O in the reaction with O2 at neutral pH and ambient temperature. The uses carbon felt an electrode material for both anode and the cathode anion exchange membrane a separator. anodic oxidation of accelerated by methyl viologen-mediated electrocatalysis bacterial cells Desulfoibrio ulgaris (Hildenborough) catalysts, cathodic reduction 2,2′-azinobis(3-ethylbenzothiazoline-6-sulfonate)-mediated electrocatalysis bilirubin oxidase catalyst. bioelectrocatalytic systems allowed operate 1.0 V current 0.9 mA size 1.5 × 0.1 cm3. voltage attained 1.17 at open circuit, which is close standard electromotive force 1.23 V. voltage–current behavior interpretable linear sweep voltammetry same system. On this basis, electrochemistry behind performance discussed.