Significantly Enhanced Performance of Nanofluidic Osmotic Power Generation by Slipping Surfaces of Nanopores

High-performance osmotic energy conversion (OEC) with a perm-selective porous membrane requires both high ionic selectivity and permeability simultaneously. Here hydrodynamic slip is considered on the surfaces of nanopores to break trade-off between permeability, because it decreases viscous friction at solid–liquid interfaces which can promote diffusion during OEC. Taking advantage simulations, influences from individual slipping OEC performance have been investigated, i.e., inner surface (surfaceinner) exterior low- high-concentration sides (surfaceL surfaceH). Results show that surfaceL crucial for high-performance For various lengths, simultaneously increases nanopores, results in significantly enhanced electric power efficiency. longer than 30 nm, surfaceinner plays dominant role increase power, induces considerable decrease efficiency due transport cations anions. Considering difficulty modification may be better choice achieve Our provide feasible guidance design membranes harvesting.