A surface configuration strategy to hierarchical Fe-Co-S/Cu2O/Cu electrodes for oxygen evolution in water/seawater splitting

Fe-modulated NH2–CoFe MOF nanosheet arrays on nickel foam by cation exchange reaction for an efficient OER electrocatalyst at high current density in alkaline water/seawater

“…The low catalytic activity at high current densities in real seawater could be attributed to the complex components of real seawater, including microbes, bacteria, and various ions, which could poison the catalytic electrode. 92…”

Designing electrocatalysts for seawater splitting: surface/interface engineering toward enhanced electrocatalytic performance

“…117,118 Meanwhile, the interlaced trunks and branches of hierarchical nanostructures provide ample free space for mass transfer, and accelerate the bubble release rate. [119][120][121] For example, Sun et al 122 used Cu(OH) 2 nanowires as a template loading nanosheet-like Fe-Co sulfide units on the one-dimensional Cu 2 O/Cu backbone through electrodeposition, forming Fe-Co-S/Cu 2 O/Cu with a unique hierarchical structure. In practice, this catalytic electrode achieved 50 mA cm −2 in 1 M KOH while requiring only 338 mV overpotential.…”

An amorphous FeCoNiMnCr high-entropy alloy supported by 2H-MoS2 on carbon cloth as a highly efficient and robust electrocatalyst for water oxidation

“…5 Although IrO 2 /RuO 2 have been used as commercial electrodes for OER electrocatalysis, their high-price and limited abundance seriously restrict their large-scale applications in the water splitting industry. 6 In recent decades, large amounts of earth-abundant materials, such as transition metal based alloys, 7,8 oxides, 9 carbides, 10 nitrides 11 and sulfides, 12 have been studied as promising OER electrocatalysts to replace the precious Ir/Ru-based electrocatalysts.…”