| Abstract Scope |
When layered compounds are osmotic swollen to a gigantic extent, they may be eventually delaminated into single-layer nanosheets. Taking advantages that these 2D nanosheets are obtained as a colloid suspension, environmentally friendly wet processes have been developed to assemble layered double hydroxide (LDH) nanosheets with oppositely charged 2D nanomaterials such as graphene oxide, MoS2, MXene, etc. into superlattice-like nanocomposites. We have explored their structural, electronic, and electrocatalytic properties, demonstrating that these nanocomposites are promising as non-precious metal electrocatalysts for advanced energy-related applications such as alkaline water electrolysis and metal-air batteries, etc. In addition, LDH nanosheets exhibited exceptionally high in-plane OH- ion conductivity approaching 10-1 S cm-1. We combined LDH nanosheets with nanoparticles and other components to construct hybrid composite membranes, achieving a high transmembrane conductivity. The results indicate that self-assembly of nanosheets are a vital strategy toward the development of high-performance membranes/separators for next-generation energy conversion technologies. |