Constructing Mechanical Shuttles in a Three‐dimensional (3D) Porous Architecture for Selective Transport of Lithium Ions

Lithium (Li) extraction from brines is a major barrier to the sustainable development of batteries and alloys; however, current separation technology suffers from a trade‐off between ion selectivity and permeability. Herein, a crown ether mechanically interlocked 3D porous organic framework (Crown‐P...

Full description

Saved in:
Bibliographic Details
Published in:Angewandte Chemie International Edition 2023-02, Vol.62 (7), p.e202216549-n/a
Main Authors: Ruan, Xianghui, Zhang, Cheng, Zhu, Yuzhang, Cai, Fuli, Yang, Yajie, Feng, Jiahui, Ma, Xujiao, Zheng, Yue, Li, Huanhuan, Yuan, Ye, Zhu, Guangshan
Format: Article
Language:English
Subjects:
Batteries
Crown ethers
Ion Transport
Lithium
Lithium Enrichment
Lithium ions
Membrane
Membranes
Nanocomposites
Permeability
Porous materials
Porous media
Porous Organic Framework
Selective Binding
Selectivity
Sustainable development
Thin films
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lithium (Li) extraction from brines is a major barrier to the sustainable development of batteries and alloys; however, current separation technology suffers from a trade‐off between ion selectivity and permeability. Herein, a crown ether mechanically interlocked 3D porous organic framework (Crown‐POF) was prepared as the porous filler of thin‐film nanocomposite membranes. Crown‐POF with penta‐coordinated (four Ocrown atoms and one Ntert‐amine atom) adsorption sites enables a special recognition for Li+ ion. Moreover, the four Ntert‐amine atoms on each POF branch facilitate the flipping motion of Li+ ion along the skeletal thread, while retaining the specified binding pattern. Accordingly, the crown ether interlocked POF network displays an ultrafast ion transfer rate, over 10 times that of the conventional porous materials. Notably, the nanocomposite membrane gives high speed and selectivity for Li+ ion transport as compared with other porous solid‐based mixed‐matrix membranes. A crown ether mechanically interlocked three‐dimensional porous architecture is prepared as the porous filler of mixed‐matrix membranes. The mechanical shuttles speed up the ion transport in the adsorbent solid, leading to a rapid and selective transport of lithium ions.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202216549