Multilayered Conductive Nanosheet as an Emerging Hybridization Matrix to Explore High-Performance Energy-Functional Materials

New type of versatile synthetic strategy for exploring high-performance energy-functional materials is developed by employing multilayer conductive 2D hybrid nanosheet of polydiallyldiammonium (PDDA)-anchored reduced-graphene-oxide (prGO)/metal oxide/prGO as new type of conductive hybridization matrix. The self-assembly of trilayer prGO/RuO₂/prGO nanosheet with MoS₂/MnO₂ nanosheet yields strongly-coupled 2D superlattice-like nanohybrids of MoS₂-prGO/RuO₂/prGO and MnO₂-prGO/RuO₂/prGO, respectively. The heterolayered hybridization with robust trilayer prGO/RuO₂/prGO nanosheet is quite effective in improving the structural ordering of hybridized species with depressed amounts of crystal defect and enhancing the porosity of the restacked nanohybrids. The multilayered prGO/RuO₂/prGO nanosheet-based hybrids deliver much superior electrocatalyst and supercapacitor electrode performance over single-layered rGO or RuO₂ nanosheet-based homologues, underscoring the efficacy of multilayer conductive nanosheet as versatile hybridization matrix. The superior advantage of multilayer conductive nanosheets originates from the enhancement of charge/mass transports caused by the flattening of hybridized 2D crystallite and the increase of porosity, respectively.