Volume 135, Issue 7 e202216549
Forschungsartikel

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

Xianghui Ruan

Xianghui Ruan

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

These authors contributed equally to this work.

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Cheng Zhang

Cheng Zhang

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

These authors contributed equally to this work.

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Yuzhang Zhu

Yuzhang Zhu

Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, 215123 China

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Fuli Cai

Fuli Cai

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Yajie Yang

Yajie Yang

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Jiahui Feng

Jiahui Feng

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Xujiao Ma

Xujiao Ma

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Yue Zheng

Yue Zheng

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Huanhuan Li

Huanhuan Li

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Ye Yuan

Corresponding Author

Ye Yuan

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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Guangshan Zhu

Corresponding Author

Guangshan Zhu

Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education, Northeast Normal University, Renmin Avenue, Changchun, 130024 China

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First published: 08 December 2022
Citations: 2

Abstract

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.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article. Experimental procedures and characterization data including Figures S1–S29 and Table S1–S5.

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