This strategy enables the simple and rapid fabrication of ionogel membranes with tunable shapes, controllable thicknesses, high ionic conductivity up to 14.1 mS cm −1, good stretchability exceeding 130% and excellent tandem duplication over 700 times. To overcome this challenge, we propose a ‘dip and peel’ strategy to exfoliate 2D ionogel membranes from a biomacromolecular gelatum (for example, a cellulose ionogel colloid) by controlling the solvent-induced supramolecular self-assembly. However, the rapid, reliable and reproducible fabrication of ionogel membranes remains challenging due to difficult-to-control molecular behaviour. Two-dimensional (2D) ionogel membranes have emerged as a promising class of materials for broad applications in flexible electronics, smart robotics and artificial intelligence.
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