Synergistic spin effects in medium-entropy Ni-Fe-Mn-Ce oxyhydroxides for seawater oxidation.

ABSTRACT: Efficient and durable oxygen evolution reaction (OER) electrocatalysis is essential for advancing sustainable seawater electrolysis. In this work, a high-performance Ni-Fe-Mn-Ce medium-entropy oxyhydroxide is constructed via in situ electrochemical reconstruction strategy for the OER. Guided by density functional theory (DFT), the effects of eight candidate fourth-metal elements (Al, Ce, Co, Cr, Cu, Sn, Zn, or Zr) on the electronic structure and reaction energetics of the NiFeMn(O)OH matrix are comprehensively investigated, revealing the unique advantages of Ce in optimizing intermediate adsorption energies and lowering the theoretical overpotential. The catalyst requires an overpotential of only 183 mV at 10 mA cm^-2 in 1 M KOH, while maintaining a low overpotential of 22

SUBMITTER: Xiao L 

PROVIDER: S-EPMC12536804 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature