“…6,21,23 After acid etching, abundant pores (macro- and meso-) will be formed in the MMT matrix, leading to a significant increase in the specific surface area and full exposure of the adsorption active sites on the aluminosilicate layers. 24 Cationic exchange, another popular modification method, is usually used to replace the interlamellar cations with Li + , Na + , Zn 2+ , etc ., enabling MMT-based materials to act as an excellent reservoir or conductor of these metal ions. 19 In addition, as MMT possesses an elastic layered structure, the interlayer spacing of MMT can be tuned and enlarged to facilitate ion transport in the EES devices.…”