Figure 6
From: Two-dimensional biphenylene: a promising anchoring material for lithium-sulfur batteries

Calculated charge density difference of defective BPN sheet (D2 site) adsorbed with (a) Li2S, (b) Li2S2, (c) Li2S4, (d) Li2S6, (e) Li2S8, and (f) S8. Yellow and blue regions indicate charge accumulation and depletion, respectively, the iso-surface value is 0.002 e/A3. The brown, green, and yellow spheres correspond to C, Li, and S atoms, respectively.