A Fusion of Biomimetic Fuel and Solar Cells Based on Hydrogenase, Photosystem II, and Cytochrome c Oxidase

We report an Ir complex as an anode catalyst capable of switching between a hydrogenase‐type fuel‐cell mode and a photosystem II‐type solar‐cell mode. This catalyst is connected to carbon‐black‐supported platinum as a cathode catalyst, which reduces dioxygen in a manner analogous to cytochrome c oxidase. Together, they make a system capable of switching between the two modes.

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