Boosting the inherent activity of NiFe layered double hydroxide via erbium incorporation for water oxidation.

ABSTRACT: Enhancing the inherent activity of transition metal-based compounds involving Ni and Fe for the electrocatalytic oxygen evolution reaction (OER) is of vital importance, especially NiFe layered double hydroxide (LDH). Here, we doped erbium (Er) into NiFe LDH (Er-NiFe LDH) nanostructures using simple liquid-phase synthesis. The OER activity tests at the same mass loading demonstrated that Er-NiFe LDH has a smaller overpotential and lower Tafel slope than undoped NiFe LDH and commercial RuO₂ powders, needing only a small overpotential of 243 mV to achieve a constant current at 10 mA cm^-2. Additionally, Er-NiFe LDH was grown in situ on hydrophilic carbon paper substrates (Er-NiFe LDH@CP) to fabricate a three-dimensional (3D) electrode with large catalyst loading, w

SUBMITTER: Yang J 

PROVIDER: S-EPMC10483838 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature