Electronic Modulation of the 3D Architectured Ni/Fe Oxyhydroxide Anchored N-Doped Carbon Aerogel with Much Improved OER Activity.

ABSTRACT: It remains a big challenge to develop non-precious metal catalysts for oxygen evolution reaction (OER) in energy storage and conversion systems. Herein, a facile and cost-effective strategy is employed to in situ prepare the Ni/Fe oxyhydroxide anchored on nitrogen-doped carbon aerogel (NiFeO_x(OH)_y@NCA) for OER electrocatalysis. The as-prepared electrocatalyst displays a typical aerogel porous structure composed of interconnected nanoparticles with a large BET specific surface area of 231.16 m²·g^-1. In addition, the resulting NiFeO_x(OH)_y@NCA exhibits excellent OER performance with a low overpotential of 304 mV at 10 mA·cm^-2, a small Tafel slope of 72 mV·dec^-1, and excellent stability after 2000 CV cycles

SUBMITTER: Lu J 

PROVIDER: S-EPMC10048674 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature