Fig. 1. Interactions between MC and the I⁻/I₃⁻ electrolyte.

(A) Photograph of MC powder, schematic of an MC fiber, and the molecular structure of MC. (B) Photographs of the I⁻/I₃⁻ + MC electrolyte at different temperatures and the schematics showing the change of MC from the hydrophilic to hydrophobic state upon heating. I₃⁻ ions interact with MC through hydrophobic interaction at high temperatures. Photo credit: (A and B) Yang Han, The Chinese University of Hong Kong.