Fig. 8.

a Circuit diagram of the self-charging powered textile for wearable electronics (WE). Reprinted with permission from Ref. [23]. b Implanting an SLB into a triboelectric nanogenerator. Reprinted with permission from Ref. [25]. c Schematic diagram of self-charging process for the Li-ion batteries, distinctly showing the flow of electrons in the circuit. Reprinted with permission from Ref. [19]. d Schematic illustration of the electric storage process from the external capacitor to the convoluted power device as an SLB. Reprinted with permission from Ref. [27]