Molybdenum Carbide Nanoparticles Coated into the Graphene Wrapping N-Doped Porous Carbon Microspheres for Highly Efficient Electrocatalytic Hydrogen Evolution Both in Acidic and Alkaline Media.

ABSTRACT: Molybdenum carbide (Mo₂C) is recognized as an alternative electrocatalyst to noble metal for the hydrogen evolution reaction (HER). Herein, a facile, low cost, and scalable method is provided for the fabrication of Mo₂C-based eletrocatalyst (Mo₂C/G-NCS) by a spray-drying, and followed by annealing. As-prepared Mo₂C/G-NCS electrocatalyst displays that ultrafine Mo₂C nanopartilces are uniformly embedded into graphene wrapping N-doped porous carbon microspheres derived from chitosan. Such designed structure offer several favorable features for hydrogen evolution application: 1) the ultrasmall size of Mo₂C affords a large exposed active sites; 2) graphene-wrapping ensures great electrical conductivity; 3) porous structure increa

SUBMITTER: Wei H 

PROVIDER: S-EPMC5867049 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature