Figure 2

(A) Cross-sectional SEM image of Ag/MnO₂ composite sheath yarn electrode. (Scale bar = 10 μm). (B) Magnified SEM image of Ag/MnO₂ composite sheath yarn electrode’s core and sheath. (Scale bar = 4 μm). (C) Elemental mapping of Mn, O, Ag and C by EDS over the cross-section image. (D) Nyquist curves for the frequency range from 0.01 to 100 kHZ. The system comprises two symmetric Ag/MnO₂ composite electrodes coated by PVA-LiCl gel electrolyte. (E) Calculated capacitance retention of the solid-state pristine MnO₂ sheath and Ag/MnO₂ composite sheath supercapacitor on various scan rate (measured from 10 to 100 mV s⁻¹). (F) The comparison of CV curves (at 100 mV s⁻¹) pristine MnO₂ sheath (black line) and Ag/MnO₂ composite sheath (blue line) supercapacitors. All measurements are performed in two electrode configuration yarns coated with gel based solid electrolyte.