Temporal evolution of microstructure and its influence on micromechanical and tribological properties of Stellite-6 cladding under aging treatment

Advanced design strategies for Fe-based metal–organic framework-derived electrocatalysts toward high-performance Zn–air batteries

“…23 Iron is a widely distributed metal element in the Earth's crust, and the mining technology is mature. 24 Therefore, the material cost of using iron-containing compounds as catalysts is low, making them suitable for commercial production. In summary, Fe-based MOFs are one of the promising alternatives for constructing nonprecious metal catalysts.…”

In situ analysis of the oxygen evolution reaction on the CuO film in alkaline solution by surface interrogation scanning electrochemical microscopy: investigating active sites (CuIII) and kinetics

“…4 While traditionally precious metal-based catalysts such as iridium oxide (IrO 2 ) and ruthenium oxide (RuO 2 ) have been considered as efficient electrocatalysts for the OER, their high costs and scarcity make them less ideal for large-scale applications and/or for use in regions where resources are limited. 5–8 Furthermore, stability issues and diminished activity over time have been reported for ruthenium and iridium oxides. 9–11 As a result, recent attention has shifted towards non-precious transition metal-based catalysts, which are earth-abundant and exhibit good OER activity.…”

Active site transfer improves electrocatalytic activity of Fe3GeTe2 edge planes for the oxygen evolution reaction: a first-principles calculation study

“…17,18 Fe-based transition metals and their compounds have been reported to be active and stable electrocatalysts for water oxidation in alkaline solutions, providing promising alternatives for the Ir- and Ru-based catalysts. 19–23 Liu et al reported that S-doped NiFe 2 O 4 /IF achieved industrial-level current density of 500 mA cm −2 at an overpotential of only 0.31 V. 21 Fan et al found that the overpotential of FeOOH-NiBDC-NF was reduced to 0.32 V by directionally regulating ion equilibrium at the dynamic interface. 23 Because of the discovery of graphene, two-dimensional (2D) van der Waals (vdW) materials have become a new frontier of electrocatalysts because they have a large number of controllable surface active sites and large specific surface area, which are conducive to providing rich reaction active centers and promoting the OER.…”