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. 2020 Jul 21;59(38):16506–16510. doi: 10.1002/anie.202006824

Figure 3.

Figure 3

Characterization of bioanode stability against O2 (a) and performance of the H2/O2 biofuel cell equipped with a P(GMA‐BA‐PEGMA)‐vio//P(N3MA‐BA‐GMA)‐vio/DdHydAB bioanode (polymer loading: 1.8 mg cm−2) coupled to a Mv‐BOx‐based biocathode in 0.1 m phosphate buffer, pH 7.4 (b). a) Chronoamperometry at an applied potential of +0.16 V vs. SHE in H2 gas diffusion mode at changing gas mixtures (Ar (100 %) or Ar/O2 (95 %/5 %)) purged through the electrolyte; nominal enzyme loading: 19.9 nmol cm−2. B) Power curve of the fully assembled membrane‐free dual‐gas diffusion H2/O2 biofuel cell showing power (left ordinate, black) and current densities (right ordinate, red); nominal enzyme loading: 39.8 nmol cm−2.