Spin Effect on Oxygen Electrocatalysis

Polypyrrole-assisted oxygen electrocatalysis on perovskite oxides

Nitrogen-containing electrocatalysts, such as metal–nitrogen–carbon (M–N–C) composites and nitrogen-doped carbons, are known to exhibit high activities for an oxygen reduction reaction (ORR). Moreover, even if the mechanism by which nitrogen improves the activities is not completely understood, a strong electronic interaction between nitrogen and active sites has been found in these composites....

Effect of oxygen adsorption on the structure and spin-reorientation

The morphology, structure, and magnetism of Fe films on an oxygen-precovered, stepped Cu~1 1 25! surface are investigated by scanning tunneling microscopy, low-energy electron diffraction, and magneto-optical Kerr effect analysis. After exposure of Cu~1 1 25! to about 600 L of oxygen at 493 K, a well-ordered ~2&3&!R45° superstructure is formed. The O-induced structure has a zig-zag morphology, ...

Tuning Redox Transitions via Inductive Effect in Metal Oxides and Complexes, and Implications in Oxygen Electrocatalysis

Context & Scale This review aims to bridge the fields of inorganic molecular chemistry, electrocatalysis, lithium-ion batteries, and chemical physics of oxides by introducing a unifying concept linking the electronic structures and electrochemical properties of transition metal oxides and complexes. In this work, by reviewing broad literature on the redox behavior of a number of Ni, Co, Fe, and...

Beyond the volcano limitations in electrocatalysis--oxygen evolution reaction.

Oxygen evolution catalysis is restricted by the interdependence of adsorption energies of the reaction intermediates and the surface reactivity. The interdependence reduces the number of degrees of freedom available for catalyst optimization. Here it is demonstrated that this limitation can be removed by active site modification. This can be achieved on ruthenia by incorporation of Ni or Co int...

Oxygen Reduction Electrocatalysis by Matthew Sherman Thorum Dissertation