fig8

Figure 8. (A) Digital photos of the viscoelastic composite^[112]; (B) 3D-printed hydrogel scaffold made of polyacrylamide, hemicellulose, and EGaIn microdroplets^[112]; (C) The composite is used as the anode host in a Zn-ion battery^[112]; (D) Schematic of the hydrogel containing covalent bonds and hydrogen bonds^[112]; (E) The EGaIn LM microdroplets cause acrylamide monomers to undergo radical polymerization with the microdroplets^[112]; (F) Diagram of the printed LTO/LFP electrodes in a complete pouch cell battery^[113]; (G) A pouch cell with printed electrodes that illuminates an LED in its folded, twisted, bent, and flat configurations is demonstrated. There is a 1 cm scale bar^[113]. 3D: Three-dimensional; LTO: Li₄Ti₅O₁₂; LFP: LiFePO₄; LED: light emitting diode.