Identifying effective means to improve the electrochemical performance of oxygen-evolution catalysts represents a significant challenge in several emerging renewable energy technologies. Herein, we consider metal-nitrogen-carbon sheets which are commonly used for catalyzing the oxygen-reduction reaction (ORR), as the support to load NiO nanoparticles for the oxygen-evolution reaction (OER). FeN...

According to the conventional understanding, oxygen evolution reaction on metal oxide surfaces involves four proton-coupled electron transfer steps with *OH, *O, and *OOH intermediates. Recently, several alternative mechanisms lower overpotentials were proposed for highly active catalysts. While such additional intermediates leading nonelectrochemical could be considered, they are usually negle...

Developing non-noble metal-based electrocatalysts for oxygen reduction reaction (ORR), evolution (OER), and hydrogen (HER) is highly desirable, while still facing challenges. Herein, a self-sacrifice template engineering strategy that feasible carbonization of the copolymer melamine-trithiocyanurim wrapped by polydopamine was developed to fabricate N, S hollow co-doped carbon tube (NSCHCT) base...

We present a first-principles study of MnNiO3, a promising oxygen-evolution photocatalyst. Using density functional theory with the PBE + U functional and the screened hybrid functional of Heyd, Scuseria, and Ernzerhof (HSE), we compute and analyze the ground-state geometry and electronic structure. We find that MnNiO3 is a ferrimagnetic semiconductor with an indirect band gap, consistent with ...

The members of the perovskite oxide family have been vastly explored for their potential as active electrocatalysts an efficient anodic reaction (i.e. oxygen evolution reaction, OER) water splitting process.