Figure 13.

Morphological Characterizations, Performance Investigations, and Theoretical Calculation

(A) Scanning electron micrograph of TiN-S.

(B) Cycling performance of TiN-S, TiO₂-S, and Vulcan C-S over 500 cycles at a charge/discharge rate of 0.5 C rate. Reprinted with permission from (Cui et al., 2016). Copyright 2016, Wiley-VCH.

(C) High-angle annular dark-field STEM image. Scale bar: 500 nm.

(D) Side view of a Li₂S₆ molecule on VN (200) surface; the binding energy between Li₂S₆ and VN is calculated to be 3.75 eV. Reprinted with permission from (Sun et al., 2017). Copyright 2017, Nature Publishing Group.