Fig. 1: Material synthesis and structural characterization of (Ni,Fe)S2@Ti3C2.
From: MXene-Assisted NiFe sulfides for high-performance anion exchange membrane seawater electrolysis
a Schematic synthesis of (Ni,Fe)S2@Ti3C2. (NiFe LDH@Ti3C2: NiFe layered double hydroxides loading on the Ti3C2 surface. (Ni,Fe)S2@Ti3C2: NiFe sulfide loading on the Ti3C2 surface.) b SEM image and (c) TEM and HRTEM (insert) images of (Ni,Fe)S2@Ti3C2. d STEM image of (Ni,Fe)S2@Ti3C2 and corresponding EDS mappings of Ni, Fe, S, Ti, and C. e Ni 2p XPS spectra of (Ni,Fe)S2@Ti3C2 and (Ni,Fe)S2. f Ni K-edge XAFS spectra of (Ni,Fe)S2@Ti3C2, (Ni,Fe)S2, NiO, and Ni foil. g Fe 2p XPS spectra of (Ni,Fe)S2@Ti3C2 and (Ni,Fe)S2. h Fe K-edge XAFS spectra of (Ni,Fe)S2@Ti3C2, (Ni,Fe)S2, FeO, Fe2O3, and Fe foil. i Ti 2p XPS spectra of (Ni,Fe)S2 and Ti3C2. j ESR spectra of (Ni,Fe)S2@Ti3C2 and (Ni,Fe)S2.
