RESEARCH / A0318
Engineering a Sulfur-Vacancy-Rich Binary Sulfides@ Carbon Heterostructure Displaying Fast Reaction Kinetics in High-Performance Secondary Batteries
Read the original paper · 10.1021/acsami.5c10566 ↗
Source figures may contain other techniques and soft X-ray spectra. C, N and O measurements are outside our current hard-XAFS testing range.
Figure 2. (a) Model of S vacancies in Bi2S3/MoS2@NC, and the formation energy of S vacancies based on DFT. (b) EPR spectrum of Bi2S3/ MoS2@NC. High-resolution XPS spectra of (c) Bi 4f, (d) Mo 3d, and (e) S 2p. (f) Bi-L3 edge X-ray absorption near-edge structure (XANES) spectra of Bi2S3/MoS2@NC and reference. (g) FT-EXAFS spectra at the K-edge, and (h) Bi L3-edge k3-weighted FT-EXAFS. (i) XAFS fitting curves of the Bi L3-edge for Bi2S3/MoS2@NC (k3 space). Wavelet-transform-EXAFS (WT-EXAFS) of (j) Bi2O3 and (k) Bi2S3/MoS2@NC at the Bi L3-edge.