Vertically Transported Graphene Oxide for High-Performance Osmotic Energy Conversion.

ABSTRACT: Reverse electrodialysis is a promising method to harvest the osmotic energy stored between seawater and freshwater, but it has been a long-standing challenge to fabricate permselective membranes with the power density surpassing the industry benchmark of 5.0 W m^-2 for half a century. Herein, a vertically transported graphene oxide (V-GO) with the combination of high ion selectivity and ultrafast ion permeation is reported, whose permeation is three orders of magnitude higher than the extensively studied horizontally transported GO (H-GO). By mixing artificial seawater and river water, an unprecedented high output power density of 10.6 W m^-2 is obtained, outperforming all existing materials. Molecular dynamics (MD) simulations reveal the mechanism of the ultrafast tran

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC7312320 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature