Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(48), P. 33661 - 33668
Published: Jan. 1, 2024
This manuscript presents the synthesis of fully conjugated covalent organic frameworks, TBI-COF-O and TBI-COF-N, via aldol condensation, highlights their performance as cathodes in Li-ion batteries with notable conductivities capacities.
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Aug. 19, 2024
Abstract Rechargeable secondary batteries, widely used in modern technology, are essential for mobile and consumer electronic devices energy storage applications. Lithium (Li)‐ion batteries currently the most popular choice due to their decent density. However, increasing demand higher density has led development of Li metal (LMBs). Despite potential, commonly liquid electrolyte‐based LMBs present serious safety concerns, such as dendrite growth risk fire explosion. To address these issues, using solid‐state electrolytes emerged a promising solution. In this Perspective, recent advancements discussed ionic covalent organic framework (ICOFs)‐based electrolytes, identify current challenges field, propose future research directions. Highly crystalline ion conductors with polymeric versatility show promise next‐generation electrolytes. Specifically, use anionic or cationic COFs is examined Li‐based highlight high interfacial resistance caused by intrinsic brittleness ICOFs main limitation, presents innovative ideas developing all‐ quasi‐solid‐state ICOF‐based With considerations further developments, potential optimistic about enabling realization high‐energy‐density all‐solid‐state LMBs.
Language: Английский
Citations
11
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 6, 2024
Abstract Dynamic molecules with tunable chemical and physical properties in response to external stimuli hold great potential for applications various fields such as information storage, smart molecular machines, biomimetics. Among them, supramolecular springs spin‐crossover (SCO) complexes can both undergo visible macroscopic changes under heat or light stimulation. In this study, we synthesized a unique trinuclear Fe(II)‐SCO complex, [( R −L)Fe II {Au(CN) 2 } ] ( 1 ), using chiral chelating ligand decorated rotatable benzyl rings. The [FeAu form ‐helical chain via elastic Au contacts. Interestingly, the synergy between multiple dynamic factors (SCO event, rotation of rings, flexibility distance) endows complex switchings magnetism structure, well most intriguing characteristic giant anisotropic “breathing” feature thermal expansion within two distinct temperature regimes. Specifically, undergoes hysteretic magnetic transitions: non‐spin transition 360 380 K an unsymmetric SCO region 160–280 K, associated symmetry‐breaking event non‐polar polar space groups (P2 ↔P2 ). Both transitions are triggered/accompanied by (inward vs . outward) Correspondingly, reversible spring‐like motions helical chains pitches varying from 11.345 140 12.509 280 then back 11.630 Å observed This work demonstrates significant success incorporating motion one system, paving way designing multifunctional materials future devices.
Language: Английский
Citations
2
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: July 11, 2024
Covalent organic frameworks (COFs) have emerged as versatile materials with many applications, such carbon capture, molecular separation, catalysis, and energy storage. Traditionally, flexible building blocks been avoided due to their potential disrupt ordered structures. Recent studies demonstrated the intriguing properties enhanced structural diversity achievable components by judicious selection of blocks. This study presents a novel series ionic COFs (ICOFs) consisting tetraborate nodes linkers. These ICOFs use borohydrides irreversibly deprotonate alcohol monomers achieve high degree polymerization. Structural analysis confirms dia topologies. Reticulation is explored using various metal counterions. Also, these exhibit excellent stability in alcohols coordinating solvents. The tested single-ion conductive solid-state electrolytes. ICOF-203-Li displays one lowest activation energies reported for ion conduction. chemistry anticipated facilitate further functionality crystalline polymers.
Language: Английский
Citations
1
Polymer, Journal Year: 2024, Volume and Issue: unknown, P. 127991 - 127991
Published: Dec. 1, 2024
Language: Английский
Citations
1
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(42)
Published: July 11, 2024
Abstract Covalent organic frameworks (COFs) have emerged as versatile materials with many applications, such carbon capture, molecular separation, catalysis, and energy storage. Traditionally, flexible building blocks been avoided due to their potential disrupt ordered structures. Recent studies demonstrated the intriguing properties enhanced structural diversity achievable components by judicious selection of blocks. This study presents a novel series ionic COFs (ICOFs) consisting tetraborate nodes linkers. These ICOFs use borohydrides irreversibly deprotonate alcohol monomers achieve high degree polymerization. Structural analysis confirms dia topologies. Reticulation is explored using various metal counterions. Also, these exhibit excellent stability in alcohols coordinating solvents. The tested single‐ion conductive solid‐state electrolytes. ICOF‐203‐Li displays one lowest activation energies reported for ion conduction. chemistry anticipated facilitate further functionality crystalline polymers.
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 6, 2024
Abstract Dynamic molecules with tunable chemical and physical properties in response to external stimuli hold great potential for applications various fields such as information storage, smart molecular machines, biomimetics. Among them, supramolecular springs spin‐crossover (SCO) complexes can both undergo visible macroscopic changes under heat or light stimulation. In this study, we synthesized a unique trinuclear Fe(II)‐SCO complex, [( R −L)Fe II {Au(CN) 2 } ] ( 1 ), using chiral chelating ligand decorated rotatable benzyl rings. The [FeAu form ‐helical chain via elastic Au contacts. Interestingly, the synergy between multiple dynamic factors (SCO event, rotation of rings, flexibility distance) endows complex switchings magnetism structure, well most intriguing characteristic giant anisotropic “breathing” feature thermal expansion within two distinct temperature regimes. Specifically, undergoes hysteretic magnetic transitions: non‐spin transition 360 380 K an unsymmetric SCO region 160–280 K, associated symmetry‐breaking event non‐polar polar space groups (P2 ↔P2 ). Both transitions are triggered/accompanied by (inward vs . outward) Correspondingly, reversible spring‐like motions helical chains pitches varying from 11.345 140 12.509 280 then back 11.630 Å observed This work demonstrates significant success incorporating motion one system, paving way designing multifunctional materials future devices.
Language: Английский
Citations
0
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(48), P. 33661 - 33668
Published: Jan. 1, 2024
This manuscript presents the synthesis of fully conjugated covalent organic frameworks, TBI-COF-O and TBI-COF-N, via aldol condensation, highlights their performance as cathodes in Li-ion batteries with notable conductivities capacities.
Language: Английский
Citations
0