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A Supramolecular Capsule for Reversible Polysulfide Storage/Delivery in Lithium‐Sulfur Batteries
Author(s) -
Xie Jin,
Peng HongJie,
Huang JiaQi,
Xu WenTao,
Chen Xiang,
Zhang Qiang
Publication year - 2017
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.201710025
Subject(s) - polysulfide , supramolecular chemistry , faraday efficiency , battery (electricity) , sulfur , nanotechnology , adsorption , lithium (medication) , materials science , lithium–sulfur battery , metal organic framework , chemical engineering , molecule , chemistry , organic chemistry , electrode , electrolyte , medicine , power (physics) , physics , quantum mechanics , engineering , endocrinology
Abstract Supramolecular materials, in which small organic molecules are assembled into regular structures by non‐covalent interactions, attract tremendous interests because of their highly tunable functional groups and porous structure. Supramolecular adsorbents are expected to fully expose their abundant adsorptive sites in a dynamic framework. In this contribution, we introduced cucurbit[6]uril as a supramolecular capsule for reversible storage/delivery of mobile polysulfides in lithium‐sulfur (Li‐S) batteries to control undesirable polysulfide shuttle. The Li‐S battery equipped with the supramolecular capsules retains a high Coulombic efficiency and shows a large increase in capacity from 300 to 900 mAh g −1 at a sulfur loading of 4.2 mg cm −2 . The implementation of supramolecular capsules offers insights into intricate multi‐electron‐conversion reactions and manifests as an effective and efficient strategy to enhance Li‐S batteries and analogous applications that involve complex transport phenomena and intermediate manipulation.