Fig. 2: Characterization of the thermally drawable tough hydrogels for electrolytes and electrodes.
From: Fully biocompatible, thermally drawn fiber supercapacitors for long-term bio-implantation
a Schematic illustration of molecular behavior in the hydrogels during the TDP. b XRD patterns of PVA/PEG, PVA/SB, and the electrolyte hydrogels, highlighting differences in crystallinity among the hydrogel formulations. c Stress-strain curves of the hydrogels, showing that the electrolyte hydrogel exhibits superior toughness and elongation. d Storage modulus (G’) and loss modulus (G”) of the electrolyte and electrode hydrogels, indicating the elastic and viscous properties critical for thermal drawability. e Loss tangent (tan δ) of electrolyte and electrode hydrogels, revealing optimal drawability at temperatures between 80 °C and 90 °C.
