Selective and durable H₂O₂ electrosynthesis catalyst in acid by selenization induced straining and phasing.

ABSTRACT: Developing efficient electrocatalysts for acidic electrosynthesis of hydrogen peroxide (H₂O₂) holds considerable significance, while the selectivity and stability of most materials are compromised under acidic conditions. Herein, we demonstrate that constructing amorphous platinum-selenium (Pt-Se) shells on crystalline Pt cores can manipulate the oxygen reduction reaction (ORR) pathway to efficiently catalyze the electrosynthesis of H₂O₂ in acids. The Se₂‒Pt nanoparticles, with optimized shell thickness, exhibit over 95% selectivity for H₂O₂ production, while suppressing its decomposition. In flow cell reactor, Se₂‒Pt nanoparticles maintain current density of 250 mA cm^-2 for 400 h, yielding a

SUBMITTER: Yu Z 

PROVIDER: S-EPMC11522696 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature