Journal Article flexible thermoelectrics 2D chalcogenide nanoplates 2D chalcogenides Sn single atoms alkaline water electrolysis atomic-level Ni-Zn pair sites decouple density functional theory electrocatalysis enhanced CO2 electroreduction graphene interface engineering kinetic pathways laterally self-assembly mechanistic understanding metal-semiconductor hetero-­structures nano-heterostructures planar deposition mechanism screw dislocations single atom alloys sodium metal batteries sp hybridization synergistic effects thermodynamic pathways