Atomic Pt-Promoted Hierarchical CoP@CNTs-Bridged CeO₂-CoP Heterostructure-Based Hollow Microcubes for Water Electrolysis.

ABSTRACT: In this work, the electrocatalyst systems of CoP nanoparticles confined within carbon nanotubes are presented, which bridge CeO₂-CoP heterostructures embedded in nitrogen-doped hollow carbon nanocubes (CoP@CNTs/CeO₂-CoP@NCs) and further engineered with Pt single atom (Pt-CoP@CNTs/CeO₂-CoP@NCs). The Pt-CoP@CNTs/CeO₂-CoP@NCs catalyst exhibits outstanding performance for hydrogen and oxygen evolution in 1.0 m KOH medium. The two-electrode Pt-CoP@CNTs/CeO₂-CoP@NCs_(-)||CoP@CNTs/CeO₂-CoP@NCs₍₊₎ configuration reaches a low cell voltage of 1.52 V in 30 wt.% KOH and 1.53 V in 1.0 m KOH. This system further demonstrates exceptionally high mass activity, ≈38.5-fold greater than that of commercial Pt/C_(-)

SUBMITTER: Li X 

PROVIDER: S-EPMC12632438 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature