Engineering of surface metal–nitrogen moieties in Fe–V based hybrid electrocatalysts for enhanced water oxidation

Abstract

Active metal nitrides are directly constructed on the Fe–V oxide surface. The metal–nitrogen sites can accelerate surface reconstruction to form the (oxy)hydroxide species, leading to superior OER activity.

Tungstic acid integrated metal–organic frameworks for efficient oxygen evolution reaction

“…Transition metal oxide-based catalysts are known as the most active due to their intrinsic electronic structures and binding strength of oxygenated intermediates. 7,8 In particularl, well-defined NiFe hydroxides treated with several different strategies, such as optimizing the Ni/Fe ratio, 9 introducing a third dopant, 10–14 or manufacturing defects, 15 are explored to be the most efficient OER catalysts. However, such transition metal oxide catalysts still have a turnover frequency (TOF) far lower than that of the oxygen-evolving manganese complexes in photosystem II in nature.…”