Rechargeable Zn-air batteries (R-ZABs) are promising electrochemical energy storage
devices with the advantages of high theoretical energy density, low cost of Zn metal and …

The oxygen reduction reaction (ORR) is a core reaction for electrochemical energy
technologies such as fuel cells and metal–air batteries. ORR catalysts have been limited to …

Globally increasing energy demands and environmental concerns related to the use of fossil
fuels have stimulated extensive research to identify new energy systems and economies that …

Nature uses Fe porphyrin sites for the oxygen reduction reaction (ORR). Synthetic Fe
porphyrins have been extensively studied as ORR catalysts, but activity improvement is …

A longstanding research goal has been to understand the nature and role of copper–oxygen
intermediates within copper-containing enzymes and abiological catalysts. Synthetic …

Activation and reduction of O2 and H2O2 by synthetic and biosynthetic iron porphyrin
models have proved to be a versatile platform for evaluating second-sphere effects deemed …

This review focuses on the type A cytochrome c oxidases (C c O), which are found in all
mitochondria and also in several aerobic bacteria. C c O catalyzes the respiratory reduction …

Iron porphyrins with one or four tertiary amine groups in their second sphere are used to
investigate the electrochemical O2 reduction reaction (ORR) in organic (homogeneous) and …

Achieving a selective 2 e− or 4 e− oxygen reduction reaction (ORR) is critical but
challenging. Herein, we report controlling ORR selectivity of Co porphyrins by tuning only …

The past decade has seen considerable growth in the development of materials for fuel cell
electrodes, and there is a desire for active electrocatalysts derived from base metals instead …