fig4

Figure 4. (A) Output voltage of MXene/leather, MG/leather, and LIG/leather-based TENGs; (B) output current density; (C) transferred charge density; (D) output voltage of the MG/leather-based TENG under different external contact forces; (E) output current density; (F) transferred charge density; (G) output voltage of the MG/leather-based TENG at frequencies ranging from 1 to 5 Hz; (H) output current density; (I) transferred charge density.