Controllable In situ Polymerization of 1,3‐Dioxolane via Sustained‐Release Effect for Solid‐State Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract In situ formed poly(1,3‐dioxolane) (PDOL) electrolytes are of great interest due to the facile process and improved interface contact. However, practical application in PDOL is still plagued by fast solidification time (liquid state) poor high‐voltage stability (solid state). Herein, slow‐release carriers triglycidyl isocyanurate (TGIC), which play dual roles as initiator sustained‐release network confinement, can tune DOL curing cathode/electrolyte chemistry demonstrated. Specifically, electronegative C≐O epoxy groups TGIC have an affinity with BF 3 , decomposition product lithium bis(oxalate)borate (LiDFOB), delaying protonation reaction thus extending time. addition, serve crosslinking sites form crosslinked polymer (TPDOL@FEC). The corresponding structure suppresses contact between high‐fluidity organic components cathodes, generating a uniform thin cathode electrolyte layer. As result, TPDOL@FEC precursor solution remain its liquid state even after resting 24 h at room temperature. assembled LiNi 0.6 Co 0.2 Mn O 2 ||TPDOL@FEC||Li cells display impressive capacity retention 91.5% 100 cycles 4.4 V (0.5 C). This study expected be leap pursuit practically feasible electrolytes.

Language: Английский

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Organic Mixed Ionic‐Electronic Conductors as Multi‐Functional Binders for Energy‐Dense Carbon‐Free Solid‐State Batteries

Batteries & Supercaps, Journal Year: 2024, Volume and Issue: 7(8)

Published: May 31, 2024

Abstract Solid‐state lithium‐metal batteries are considered as one of the most promising candidates for next‐generation energy storage devices with high density and enhanced safety. Great efforts have been made to design solid‐state electrolytes ionic conductivity protect electrochemical interface lithium anode. However, obstruction ionic‐electronic transport within cathode remains another key challenge that needs be addressed practical application batteries. Here, we prepared organic mixed conductors (OMIECs) by in‐situ co‐polymerization three monomers (boron‐type crosslinker, liquid, sulfolene) in network poly(3,4‐ethylenedioxythiophene)/poly(4‐styrenesulfonate). The as‐prepared OMIECs show an electronic up 33.6 S cm −1 1.7×10 −4 at 30 °C, also binder functionality, providing a combined path Li + /e − cathodes maintaining mechanical/(electro−)chemical stability. As result, composed 90.0 wt % active materials only 10.0 display exceptional characteristics including C‐rate capabilities prolonged cycle life. This novel all‐in‐one carbon‐free demonstrates strategy developing multifunctional additives high‐performance

Language: Английский

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Built-in elasticity-rigidity balanced polymer electrolyte in solid-state Li-batteries with high-loading cathode

Journal of Membrane Science, Journal Year: 2024, Volume and Issue: unknown, P. 123374 - 123374

Published: Sept. 1, 2024

Language: Английский

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Quenching-induced amorphisation and configuration transformation for the enhanced electrochemical performance of poly(vinylidene fluoride-hexafluoropropylene)-based solid electrolytes

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 499, P. 156564 - 156564

Published: Oct. 10, 2024

Language: Английский

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Building slippy ion-conduction highways in polymer electrolyte by electrostatic adsorption enabled asymmetric solvation structure

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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