Heterostructure of NiFe@NiCr-LDH for Active and Durable Oxygen Evolution Reactions in Alkaline Media.

ABSTRACT: Developing cost-effective, efficient, and durable catalysts for oxygen evolution reactions (OER) is the key for promoting large-scale H₂ production through electrochemical water splitting. Herein, we report a facile method for fabricating an NiFe@NiCr-LDH catalyst toward alkaline OER. The electronic microscopy technique revealed that it has a well-defined heterostructure at the interface between the NiFe and NiCr phases. In 1.0 M KOH, the as-prepared NiFe@NiCr-LDH catalyst shows excellent catalytic performance, evidenced by an overpotential of 266 mV at the current density of 10 mA cm^-2 and a small Tafel slope of 63 mV dec^-1; both are comparable with the RuO₂ benchmark catalyst. It also exhibits robust durability in long-term operation, manifeste

SUBMITTER: Liu S 

PROVIDER: S-EPMC10142980 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature