Premium
Stepped Channels Integrated Lithium–Sulfur Separator via Photoinduced Multidimensional Fabrication of Metal–Organic Frameworks
Author(s) -
Gao GuangKuo,
Wang YiRong,
Wang SiBo,
Yang RuXin,
Chen Yifa,
Zhang Yu,
Jiang Cheng,
Wei MeiJie,
Ma Huiyuan,
Lan YaQian
Publication year - 2021
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202016608
Subject(s) - separator (oil production) , fabrication , metal organic framework , membrane , nanotechnology , materials science , electrolyte , energy storage , chemical engineering , chemistry , electrode , organic chemistry , adsorption , medicine , biochemistry , physics , alternative medicine , power (physics) , pathology , quantum mechanics , engineering , thermodynamics
Abstract Multidimensional fabrication of metal–organic frameworks (MOFs) into multilevel channel integrated devices are in high demanded for Li‐S separators. Such separators have advantages in pore‐engineering that might fulfill requirements such as intercepting the diffusing polysulfides and improving the Li + /electrolyte transfer in Li‐S batteries. However, most reported works focus on the roles of MOFs as ionic sieves for polysulfides while offering limited investigation on the tuning of Li + transfer across the separators. A photoinduced heat‐assisted processing strategy is proposed to fabricate MOFs into multidimensional devices (e.g., hollow/Janus fibers, double‐or triple‐layer membranes). For the first time, a triple‐layer separator with stepped‐channels has been designed and demonstrated as a powerful separator with outstanding specific capacity (1365.0 mAh g −1 ) and cycling performance (0.03 % fading per cycle from 100 th to 700 th cycle), which is superior to single/double‐layer and commercial separators. The findings may expedite the development of MOF‐based membranes and extend the scope of MOFs in energy‐storage technologies.