Nanoparticle-Decorated Ultrathin La₂O₃ Nanosheets as an Efficient Electrocatalysis for Oxygen Evolution Reactions.

ABSTRACT: Electrochemical catalysts for oxygen evolution reaction are a critical component for many renewable energy applications. To improve their catalytic kinetics and mass activity are essential for sustainable industrial applications. Here, we report a rare-earth metal-based oxide electrocatalyst comprised of ultrathin amorphous La₂O₃ nanosheets hybridized with uniform La₂O₃ nanoparticles (La₂O₃@NP-NS). Significantly improved OER performance is observed from the nanosheets with a nanometer-scale thickness. The as-synthesized 2.27-nm La₂O₃@NP-NS exhibits excellent catalytic kinetics with an overpotential of 310 mV at 10 mA cm^-2, a small Tafel slope of 43.1 mV dec^-1, and electrochemical i

SUBMITTER: Yan G 

PROVIDER: S-EPMC7770806 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature