Thermal suppression of charge disproportionation accelerates interface electron transfer of water electrolysis.

ABSTRACT: The sluggish electron transfer kinetics in electrode polarization driven oxygen evolution reaction (OER) result in big energy barriers of water electrolysis. Accelerating the electron transfer at the electrolyte/catalytic layer/catalyst bulk interfaces is an efficient way to improve electricity-to-hydrogen efficiency. Herein, the electron transfer at the Sr₃Fe₂O₇@SrFeOOH bulk/catalytic layer interface is accelerated by heating to eliminate charge disproportionation from Fe⁴⁺ to Fe³⁺ and Fe⁵⁺ in Sr₃Fe₂O₇, a physical effect to thermally stabilize high-spin Fe⁴⁺ (t_2g³e_g¹), providing available orbitals as electron transfer channels without pa

SUBMITTER: Lu M 

PROVIDER: S-EPMC10769854 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature