CO2 -Induced Melting and Solvation Reconfiguration of Phase-Change Electrolyte

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 28 vom: 02. Juli, Seite e2202869
1. Verfasser: Hou, Qian (VerfasserIn)
Weitere Verfasser: Jin, Ting, Wang, Hui, Li, Peiwen, Shen, Chao, Xie, Keyu
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article CO2 phase-change electrolytes solvation structure
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520 |a Phase-change materials (PCMs) are a unique and exciting class of materials with bright prospects in wide-ranging sustainable technologies such as thermal and electrochemical energy storage. While impressive, the effect of gaseous species on PCMs remains largely unexplored hitherto. Here, a gaseous co-solvent is reported that can facilitate melting and modulate physical properties such as viscosity and ion conduction of PCMs. Especially for the appealing application of PCMs as electrolytes, gaseous species also have a critical influence on both Li+ -electrolyte structure and resultant solid electrolyte interphase (SEI). Specifically, theoretical simulations and experimental analysis evidence that CO2 can promote melting while reconfiguring the solvation structure of a succinonitrile (SCL)-derived Li+ phase-change electrolyte (Li+ -PCE) model system. Due to the enhanced interaction between Li+ cations and bis(trifluoromethanesulfonyl)imide (TFSI- ) anions in the reconfigured solvation structure, more TFSI- -derived F-rich component and extra CO2 -derived Li2 CO3 form in the upgraded SEI layer, thereby endowing proof-of-concept Li-metal batteries with prolonged cyclability. These findings may stimulate widespread interest in gas leverage to innovate electrolyte chemistry 
650 4 |a Journal Article 
650 4 |a CO2 
650 4 |a phase-change electrolytes 
650 4 |a solvation structure 
700 1 |a Jin, Ting  |e verfasserin  |4 aut 
700 1 |a Wang, Hui  |e verfasserin  |4 aut 
700 1 |a Li, Peiwen  |e verfasserin  |4 aut 
700 1 |a Shen, Chao  |e verfasserin  |4 aut 
700 1 |a Xie, Keyu  |e verfasserin  |4 aut 
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