fig13

Figure 13. (A) Schematic of the synthesis, (B) SEM and (C) TEM images, and (D) rate performance of hierarchical yolk-shell Fe₇Se₈@C@MoSe₂^[99]. (E) SEM and (F) TEM images and (G) rate performance of hierarchical yolk-shell NiO/Ni/graphene^[100]. (H) SEM and (I) TEM images and (J) rate performance of hierarchical yolk-shell Bi₂S₃-PPy^[101].