A Highly Active Porous Mo₂C-Mo₂N Heterostructure on Carbon Nanowalls/Diamond for a High-Current Hydrogen Evolution Reaction.

ABSTRACT: Developing non-precious metal-based electrocatalysts operating in high-current densities is highly demanded for the industry-level electrochemical hydrogen evolution reaction (HER). Here, we report the facile preparation of binder-free Mo₂C-Mo₂N heterostructures on carbon nanowalls/diamond (CNWs/D) via ultrasonic soaking followed by an annealing treatment. The experimental investigations and density functional theory calculations reveal the downshift of the d-band center caused by the heterojunction between Mo₂C/Mo₂N triggering highly active interfacial sites with a nearly zero ∆G_H* value. Furthermore, the 3D-networked CNWs/D, as the current collector, features high electrical conductivity and large surface area, greatly boostin

SUBMITTER: Zhai Z 

PROVIDER: S-EPMC10856447 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature