Corrigendum to “One-pot synthesis of anti-freezing carrageenan/polyacrylamide double-network hydrogel electrolyte for low-temperature flexible supercapacitors” [Chem. Eng. J. 435 (2022) 135057] (Chemical Engineering Journal (2022) 435(P2), (S1385894722005630), (10.1016/j.cej.2022.135057))

The authors regret that the title of y-axis in Fig. 3d was erroneously used. The result in Fig. 3d was calculated from the area under the stress-strain curve until fracture point. Its correct description and unit should be toughness (kJ/m³). The correct figure is shown below. Accordingly, the “fracture energy of 967.3 kJ/m²” in both ABSTRACT and Section 3.1 should be corrected as “toughness of 967.3 kJ/m³”. Additionally, the “1200 g/cm³” in Section 2.1 should be corrected as “1200 g/cm²”. These corrections would not affect any of the results, discussions or conclusions presented in the rest of the article. The authors would like to apologise for any inconvenience caused. [Figure presented] Fig. 3. Tensile stress-strain curves of a) CG/PAAm-xLi DN hydrogels and b) CG/PAAm-xLi/K DN hydrogels. c) Tensile elongation and d) toughness of CG/PAAm-xLi and CG/PAAm-xLi/K DN hydrogels.