Fig. 3.

a Experimental photographs for the first compression cycle of CNT/MXene (1:7) and CNF/CNT/MXene (2:1:7) aerogels. b Histograms of irreversible deformation percentages after the first cycle. The inset shows the height contrast photos of samples after the first cycle (the scale bar is 1 cm). c Stress–strain curves of CNF/CNT/MXene (2:1:7) aerogel at 40%–80% compression strains in X-direction (the inset shows the direction of compression). Stress–strain curves d at 50% strain for 1000 cycles and e at 80% strain for 100 cycles. f Comparison of the stress retention of CNF/CNT/MXene (2:1:7) aerogel with those of MXene- and carbon-based aerogels. g Mechanism illustration of the compressive deformation of the CNF/CNT/MXene (2:1:7) aerogel