Wang, Y.; Zhao, M.; Chen, Y.; Bao, H.; Li, C. Construction of a Bis(benzene sulfonyl)imide-Based Single-ion Polymer Artificial Layer for a Steady Lithium Metal Anode. Polymers2023, 15, 3490.
Wang, Y.; Zhao, M.; Chen, Y.; Bao, H.; Li, C. Construction of a Bis(benzene sulfonyl)imide-Based Single-ion Polymer Artificial Layer for a Steady Lithium Metal Anode. Polymers 2023, 15, 3490.
Wang, Y.; Zhao, M.; Chen, Y.; Bao, H.; Li, C. Construction of a Bis(benzene sulfonyl)imide-Based Single-ion Polymer Artificial Layer for a Steady Lithium Metal Anode. Polymers2023, 15, 3490.
Wang, Y.; Zhao, M.; Chen, Y.; Bao, H.; Li, C. Construction of a Bis(benzene sulfonyl)imide-Based Single-ion Polymer Artificial Layer for a Steady Lithium Metal Anode. Polymers 2023, 15, 3490.
Abstract
Dendrite growth and parasitic reactions with liquid electrolyte are the two key factors that restrict the practical application of the lithium metal anode. Herein, a bis(benzene sulfonyl)imide based single-ion polymer artificial layer for lithium metal anode is successfully constructed, which is prepared via blending the as-prepared copolymer of lithiated 4, 4’-dicarboxyl bis(benzene sulfonyl)imide and 4,4’-diaminodiphenyl ether on the surface of lithium foil. This single-ion polymer artificial layer enables compact structure with unique continuous aggregated Li+ clusters, thus reducing the direct contact between lithium metal and electrolyte, and ensuring Li+ transport fast and homogeneous simultaneously. Based on which, the coulombic efficiency of the Li|Cu half-cell is effectively improved, and the cycle stability of the Li|Li symmetric cell can be prolonged from 160 h to 240 h. Surficial morphology and elemental valence analysis confirm that the bis(benzene sulfonyl)imide based single-ion polymer artificial layer effectively facilitates the Li+ uniform deposition and suppresses parasitic reactions between lithium metal anode and liquid electrolyte in the LFP|Li full-cell. This strategy provides a new perspective to achieve steady lithium metal anode, which can be a promising candidate in practical application.
Keywords
Lithium metal battery; lithium metal anode; polymeric artificial layer; single ion conductor; lithium dendrite.
Subject
Chemistry and Materials Science, Surfaces, Coatings and Films
Copyright:
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