Laser Shock Fabrication of Nitrogen Doped Inverse Spinel Fe₃O₄/Carbon Nanosheet Film Electrodes towards Hydrogen Evolution Reactions in Alkaline Media.

ABSTRACT: The reliable and cost-effective production of high-performance film electrodes for hydrogen evolution reactions remains a challenge for the laser surface modification community. In this study, prior to a thermal imidization reaction, a small number of Fe₃O₄ nanoparticles were vortexed into a poly(amic acid) (PAA) prepolymer, and the achieved flat composite film was then ablated by a 1064 nm fiber laser. After laser irradiation, the hierarchical architectures of carbon nanosheets decorated with Fe₃O₄ nanoparticles were generated. Although pure polyimide (PI) film and laser carbonized PI film, as well as bare Fe₃O₄, showcase poor intrinsic catalytic activity toward alkaline hydrogen evolution reactions, our laser-derived Fe

SUBMITTER: Wu D 

PROVIDER: S-EPMC9267510 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature