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Efficient Polysulfide Chemisorption in Covalent Organic Frameworks for High‐Performance Lithium‐Sulfur Batteries
Author(s) -
Ghazi Zahid Ali,
Zhu Lingyun,
Wang Han,
Naeem Abdul,
Khattak Abdul Muqsit,
Liang Bin,
Khan Niaz Ali,
Wei Zhixiang,
Li Lianshan,
Tang Zhiyong
Publication year - 2016
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201601250
Subject(s) - polysulfide , heteroatom , lithium (medication) , sulfur , materials science , chemisorption , adsorption , covalent bond , chemical engineering , nanotechnology , combinatorial chemistry , inorganic chemistry , electrolyte , chemistry , electrode , organic chemistry , medicine , ring (chemistry) , engineering , metallurgy , endocrinology
High performance lithium‐sulfur batteries have been successfully constructed by using boronate ester covalent organic frameworks (COFs) as the polysulfide hosts. The adsorption mechanism is ascribed to uniform coexistence of both electron‐rich O and electron‐deficient B atoms that can adsorb Li + and S x 2− , respectively. In addition, the ordered structure of COFs allows higher heteroatom doping ratio as well as more uniform distribution and redeposition of sulfur, leading to good electrode kinetics.