A Four-Electron O2-Electroreduction Biocatalyst Superior to Platinum and a Bi…

Catalysis of the electroreduction of O2 to water determines the operating voltage and thereby the efficiency of the cathode in air batteries, the prime example of which is the zinc air battery, and in fuel cells, the best-studied examples of which are the methanol/air and the H2/O2 cells. When the current density is not limited by O2 transport, the better the catalyst, the less the voltage loss…