Coupling LaNiO3 Nanorods with FeOOH Nanosheets for Oxygen Evolution Reaction

Perovskite-based electrocatalysts with compositional flexibility and tunable electronic structures have emerged as one of the promising non-noble metal candidates for oxygen evolution reaction (OER). Here, we propose a heterostructure comprising perovskite oxide (LaNiO3) nanorods iron hydroxide (FeOOH) nanosheets an effective electrochemical catalyst OER. The optimized 0.25Fe-LNO interesting 1D-2D hierarchical structure shows low overpotential 284 mV at 10 mA cm?2 small Tafel slope 69 dec?1. enhanced performance can be explained by synergistic effect between LaNiO3 FeOOH, resulting in improved electrochemically active surface area, facilitated charge transfer adsorption OH intermediates.