The attainment of carbon neutrality requires the development of aqueous energy conversion and storage devices.However,these devices exhibit limited performance due to the permeability-selectivity trade-off of permsele...The attainment of carbon neutrality requires the development of aqueous energy conversion and storage devices.However,these devices exhibit limited performance due to the permeability-selectivity trade-off of permselective membranes as core components.Herein,we report the application of a synergistic approach utilizing two-dimensional nanoribbons-entangled nanosheets to rationally balance the permeability and selec-tivity in permselective membranes.The nanoribbons and nanosheets can be self-assembled into a nanoflu-idic membrane with a distinctive“island-bridge”configuration,where the nanosheets serve as isolated islands offering adequate ionic selectivity owing to their high surface charge density,meanwhile bridge-like nanorib-bons with low surface charge density but high aspect ratio remarkably enhance the membrane’s permeability and water stability,as verified by molecular simulations and experimental investigations.Using this approach,we developed a high-performance graphene oxide(GO)nanosheet/GO nanoribbon(GONR)nanofluidic membrane and achieved an ultrahigh power density of 18.1 W m^(-2) in a natural seawater|river water osmotic power generator,along with a high Coulombic efficiency and an extended lifespan in zinc metal batteries.The validity of our island-bridge structural design is also demonstrated for other nanosheet/nanoribbon composite membranes,providing a promising path for developing reliable aqueous energy conversion and storage devices.展开更多
基金National Key Research and Development Program of China(Grant No.2022YFB2404500)Shenzhen Outstanding Talents Training Fund,the Fundamental Research Project of Shenzhen(Grant No.JCYJ20230807111702005)+3 种基金Guangdong Provincial Natural Science Foundation of China(Grant No.2022A1515110936)Shenzhen Science and Technology Program(Grant No.ZDSYS20230626091100001)National Natural Science Foundation of China(Grant No.22309102)China Postdoctoral Science Foundation(Grant No.2022M711788).
文摘The attainment of carbon neutrality requires the development of aqueous energy conversion and storage devices.However,these devices exhibit limited performance due to the permeability-selectivity trade-off of permselective membranes as core components.Herein,we report the application of a synergistic approach utilizing two-dimensional nanoribbons-entangled nanosheets to rationally balance the permeability and selec-tivity in permselective membranes.The nanoribbons and nanosheets can be self-assembled into a nanoflu-idic membrane with a distinctive“island-bridge”configuration,where the nanosheets serve as isolated islands offering adequate ionic selectivity owing to their high surface charge density,meanwhile bridge-like nanorib-bons with low surface charge density but high aspect ratio remarkably enhance the membrane’s permeability and water stability,as verified by molecular simulations and experimental investigations.Using this approach,we developed a high-performance graphene oxide(GO)nanosheet/GO nanoribbon(GONR)nanofluidic membrane and achieved an ultrahigh power density of 18.1 W m^(-2) in a natural seawater|river water osmotic power generator,along with a high Coulombic efficiency and an extended lifespan in zinc metal batteries.The validity of our island-bridge structural design is also demonstrated for other nanosheet/nanoribbon composite membranes,providing a promising path for developing reliable aqueous energy conversion and storage devices.
