The enhanced mechanical properties of MrGO-AD sheet are attributed to the synergetic effects of interactions between MXene nanosheets and rGO platelets and between the long-chain AD molecules and the rGO platelets. These interactions provide a high orientation degree and a low porosity for the sheets. The weight content of MXene nanosheets strongly affects the toughness and tensile strength of the resulting MrGO-AD sheet. The MrGO and MGO sheets show the highest tensile strength and toughness for the addition of 17.7 wt% of MXene nanosheets (Supplementary Figs. 18, 19d, and 20d, and Supplementary Table 6). Increasing the content of MXene to beyond 17.7 wt% decreases strength, failure strain, and toughness. More detailed curves and complete data for tensile strength and toughness are presented in Supplementary Figs. 18–20 and Supplementary Tables 6 and 7.