Application of graphene/LDH in energy storage and conversion

Both two-dimensional (2D) graphene (G) and layered double hydroxides (LDHs) nanomaterials can form excellent heterojunction structures and have been widely implemented to deal with energy storage. However, they often face general aggregation issues during application. Therefore, to fully exploit the advantages of each material, G and LDHs could be combined to form a novel nanocomposite material. In this review, we summarize the electrochemical energy storage and conversion (EESC) systems based on graphene/LDH (GLDH) composites, including their application in general supercapacitors (SCs), flexible supercapacitors (FSCs), rechargeable batteries, mental air cells, and oxygen evolution reactions (OER). Furthermore, the unresolved issues and possible improvements in GLDH were highlighted.