文献类型：期刊文献

英文题名：Mfi Zeolite Nanosheet Composite Membranes with Both High Lithium Ion Transport and Sulfur Fixation for Li-S Batteries

作者：Yu, Ying[1]; Chen, Xinlan[1]; Lu, Mingxuan[1]; Zou, Jie[1]; Huang, Kang[1]; Xu, Zhi[2]

机构：[1] State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 211816, China; [2] State Key Laboratory of Chemical Engineering, School of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2024

外文期刊名：SSRN

收录：EI(收录号：20240267107)

语种：英文

外文关键词：Chemical bonds - Composite membranes - Electrolytes - Lithium compounds - Lithium sulfur batteries - Lithium-ion batteries - Molecular sieves - Nanosheets - Sieves

摘要：Both fast lithium ion transfer and excellent sulfur retention are the most important target of lithium-sulfur battery separators. For this purpose, composite membranes based on two-dimensional (2D) MFI molecular sieve nanosheets were designed and synthesized for lithium-sulfur batteries. The MFI-type molecular sieves with specific pore channel (~0.56 nm) and high electronegativity can effectively suppress the LiPSs shuttling. Meanwhile, the molecular sieves with nanosheets 2D structure and properties can significantly increase electrolyte wettability to guarantee high Li+ conductivity. As a result, lithium-sulfur batteries with zeolite nanosheets composite membranes achieve high capacity of up to 763 mAh g?1 at 2C and the retention rate is 87.7% after 200 cycles. ? 2024, The Authors. All rights reserved.