RESEARCH / A0445
Tailoring coordination environments of single-atom electrocatalysts for hydrogen evolution by topological heteroatom transfer
Read the original paper · 10.1038/s41467-024-47061-6 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Fig. 3 | Synthesis and characterization of the Co–PxN4-x–C SACs. a Schematic representation of the preparation of Co–PN–C catalysts. b TEM image of single Co–P2N2–C fiber. c Atomic-resolution HAADF-STEM image with red circle marked bright dots. d HAADF-STEM image and corresponding elemental mapping of Co–P2N2–C. e Co K-edge XANES spectra of Co–N4–C, Co–P1N3–C, Co–P2N2–C,