Heterostructured iron-cobalt sulfides nanoclusters entrenched in 3D-nanosheets as high-efficient electrocatalysts for oxygen evolution reaction

Oxygen Vacancy-Originated Inorganic Proton Relay for the Oxygen Evolution Reaction: Fast Proton Hopping via La-Doped Praseodymium Carbonate Hydroxide

“…The onset potential corresponding to the current density ( J ) of ca. 0.1 mA cm –2 was calculated to be 1.422 V (vs RHE), which was lower than 1.47 V recently obtained at a carbon paper/cobalt-coordinated microporous polymer, 1.5 V at SrCoO 3 , 1.45 V at 3D-FeCoS nanosheets, 1.47 at hierarchical FeCo 2 S 4 –NiCo 2 S 4 , MOF-derived CeO 2 /C nanorod arrays, 1.45 of nanoscale NiVOx, and 1.427 obtained at nano/micro-NiCo hydroxide/Ni 2 P 2 O 7 . The required overpotential in 1.0 M KOH to reach J values of 10 and 100 mA cm –2 was found to be 249 and 350 mV, respectively.…”

High-valent iron single-atom catalysts for improved overall water splitting via a reduced energy barrier and stabilization of the active center

“…3 Electrochemical water splitting is the most efficient, clean, and environmentally safe strategy for producing green hydrogen among numerous available approaches. 4,5 High electrolytic overpotential is a limitation of commercial water electrolysis, which requires a high cell voltage (1.8–2.0 V). The design of efficient electrocatalytic materials is a key to lowering energy consumption.…”

Nitrogen‐Doped Carbon Dots Modified Fe–Co Sulfide Nanosheets as High‐Efficiency Electrocatalysts toward Oxygen Evolution Reaction

“…[12][13][14][15] Among these materials, transition metal sulfide (TMS) catalysts with decent electrical conductivity and high catalytic activity have aroused great concern, especially Fe and Co-based sulfides. [16][17][18] It is reported that there is a strong synergistic effect between Fe and Co active sites, which can modulate electron density distribution and thus effectively enhance the electrocatalytic OER activity. [19] Nevertheless, TMS catalysts are suffering from poor electrocatalytic durability during the OER process.…”