Surface dynamic engineering of discontinuous cobalt dopants on copper sulfide for enhanced electrosynthesis of hydrogen peroxide.

ABSTRACT: Electrochemical synthesis of hydrogen peroxide (H₂O₂) represents a sustainable, economical, and energy-efficient approach but faces challenges due to sluggish and complicated dynamics at the solid/liquid/gas interface. This study leverages theoretical insights from CuS surface microenvironments, demonstrating that cobalt doping and edge defects on CuS can thermodynamically favor the 2-electron oxygen reduction reaction (2e^--ORR) pathway for H₂O₂ production. To validate theoretical predictions, we synthesized a catalyst featuring interleaved hexagonal lamellar copper sulfide with discontinuous cobalt dopants at the edges and complementary defects (Co-CuS_ED). This design optimizes the microelectronic structure at the electroca

SUBMITTER: Sun C 

PROVIDER: S-EPMC12626437 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature