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Constructing Universal Ionic Sieves via Alignment of Two‐Dimensional Covalent Organic Frameworks (COFs)
Author(s) -
Jiang Cheng,
Tang Mi,
Zhu Shaolong,
Zhang Jidong,
Wu Yanchao,
Chen Yuan,
Xia Cong,
Wang Chengliang,
Hu Wenping
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201809907
Subject(s) - ionic bonding , covalent bond , materials science , membrane , nanotechnology , graphene , nanopore , molecular sieve , chemical engineering , ion , chemistry , catalysis , organic chemistry , engineering , biochemistry
The shuttle effect of electrode materials always leads to capacity loss and poor cycle life of batteries. Two‐dimensional (2D) covalent organic frameworks (COFs) with uniform and controllable nanopores provide a promising strategy for fabricating ionic sieves to inhibit the shuttle effect. However, the insoluble nature of COFs made it difficult to fabricate compact and ordered membranes of COFs. Herein, we report a novel method for facilely anisotropic ordering of 2D COFs via depositing COFs onto graphene. The resulted double‐layer membranes acting as ionic sieves impressively inhibit the shuttle effect and exhibit versatility to both organic sodium‐ion batteries and Li‐S batteries, leading to high cyclability.