| Title | Vertically Transported Graphene Oxide for High-Performance Osmotic Energy Conversion |
| Authors | Zhang, Zhenkun Shen, Wenhao Lin, Lingxin Wang, Mao Li, Ning Zheng, Zhifeng Liu, Feng Cao, Liuxuan |
| Affiliation | Xiamen Univ, Coll Energy, Xiamen 361005, Fujian, Peoples R China Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China Peking Univ, Ctr Quantitat Biol, Beijing 100871, Peoples R China |
| Keywords | CONCENTRATION-GRADIENT REVERSE ELECTRODIALYSIS MOLECULAR-DYNAMICS MEMBRANE CAPACITANCE SYSTEM FLOW |
| Issue Date | Apr-2020 |
| Publisher | ADVANCED SCIENCE |
| 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 transport in V-GO results from the quick entering of ions and the large accessible area as well as the apparent short diffusion paths in V-GO. These results will facilitate the practical application of osmotic energy and bring an innovative design strategy for various systems involving ultrafast transport, such as filtration and catalysis. |
| URI | http://hdl.handle.net/20.500.11897/606743 |
| DOI | 10.1002/advs.202000286 |
| Indexed | SCI(E) Scopus EI |
| Appears in Collections: | 其他实验室 核物理与核技术国家重点实验室 生命科学学院 |
