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- Title
A Metal Organic Framework Derived Solid Electrolyte for Lithium–Sulfur Batteries.
- Authors
Chiochan, Poramane; Yu, Xingwen; Sawangphruk, Montree; Manthiram, Arumugam
- Abstract
Lithium–sulfur batteries (LSBs) are currently considered as promising candidates for next‐generation energy storage technologies. However, their practical application is hindered by the critical issue of the polysulfide‐shuttle. Herein, a metal organic framework (MOF)‐derived solid electrolyte is presented to address it. The MOF solid electrolyte is developed based on a Universitetet i Oslo (UIO) structure. By grafting a lithium sulfonate (‐SO3Li) group to the UIO ligand, both the ionic conductivity and the polysulfide‐suppression capability of the resulting ‐SO3Li grafted UIO (UIOSLi) solid electrolyte are greatly improved. After integrating a Li‐based ionic liquid (Li‐IL), lithium bis(trifluoromethanesulfonyl)imide in 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide, the resulting Li‐IL/UIOSLi solid electrolyte exhibits an ionic conductivity of 3.3 × 10−4 S cm−1 at room temperature. Based on its unique structure, the Li‐IL/UIOSLi solid electrolyte effectively restrains the polysulfide shuttle and suppresses lithium dendritic growth. Lithium–sulfur cells with the Li‐IL/UIOSLi solid electrolyte and a Li2S6 catholyte show stable cycling performance that preserves 84% of the initial capacity after 250 cycles with a capacity‐fade rate of 0.06% per cycle.
- Subjects
UNIVERSITETET i Oslo; METAL-organic frameworks; SOLID electrolytes; POLYSULFIDES; LITHIUM sulfur batteries; IONIC conductivity; ENERGY storage
- Publication
Advanced Energy Materials, 2020, Vol 10, Issue 27, p1
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.202001285