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Ion‐Selective Prussian‐Blue‐Modified Celgard Separator for High‐Performance Lithium–Sulfur Battery
Author(s) -
Wu Xian,
Fan Lishuang,
Qiu Yue,
Wang Maoxu,
Cheng Junhan,
Guan Bin,
Guo Zhikun,
Zhang Naiqing,
Sun Kening
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201800871
Subject(s) - prussian blue , separator (oil production) , chemistry , ion , sulfur , lithium–sulfur battery , electrode , chemical engineering , inorganic chemistry , electrochemistry , organic chemistry , physics , engineering , thermodynamics
Application of Li–S batteries has been restricted because of their major problem, that is, shuttling of soluble polysulfides between electrodes, which results in serious capacity fading. For the development of high‐performance Li–S batteries, we first time utilize a simple growth method to introduce a Prussian blue (PB)‐modified Celgard separator as an ion‐selective membrane. The unique structure of PB could effectively suppress the shuttle of polysulfides but scarcely affect the transfer ability of lithium ions, which is beneficial to achieve high sulfur conversion efficiency and capacity retention. The Li–S battery with PB‐modified Celgard separator has an average capacity decay of only 0.03 % per cycle at 1 C after 1000 cycles.