fig4

Figure 4. (A) Fabrication mechanism and dynamic networks of the PAM/PBA-IL/CNF hydrogel^[72]; (B) Adhesive properties of the PAM/PBA-IL/CNF hydrogel^[72]; (C) A flexible Zn ion battery with “SEU” characters punctured, capable of powering the thermo-hygrometer^[73]; (D) Profile of stress and elastic modulus of PVA/PA hydrogels with different contents of PA^[67]; (E) EIS spectra of PAD@SC^[76]; (F) Photographs of the POIG hydrogel under stretching, torsion stretching, and knot stretching states^[78]; (G) LED brightness with the PGI20M0.65G hydrogel as the conductor at room temperature and after freezing at -60 °C^[79]. PAM: Polyacrylamide; PBA-IL: phenylboronic acid-ionic liquid; CNF: cellulose nanofibrils; PVA: polyvinyl alcohol; PAD@SC: poly (acrylic acid-co- 3-dimethyl (methacryloyloxyethyl) ammonium propane sulfonate) hydrogel incorporated with sodium lignosulfonate and cellulose nanocrystals; PA: phytic acid; EIS: electrochemical impedance spectroscopy; POIG: polymeric organic-ionic gel; LED: light emitting diode.