fig5

Figure 5. Electrochemical reaction mechanism of as-synthesized 3L-SnS₂/Gr. (A) In situ high energy XRD with wavelength of 0.4332 Å during discharging process; (B) EXAFS data of 3L-SnS₂/Gr for pristine state, discharged to 0.01 V and Sn ref.; (C) XRD patterns of p-SnS₂/Gr and 3L-SnS₂/Gr at discharging to 0.01 V; (D) Cryo-TEM images of 3L-SnS₂/Gr and p-SnS₂/Gr at discharging to 0.8 V; (E) SEM images of 3L-SnS₂/Gr and p-SnS₂/Gr after 100 cycles. XRD: X-ray powder diffraction; EXAFS: extended X-ray absorption fine structure; TEM: transmission electron microscopy; SEM: scanning electron microscopy.