Emissive Covalent Organic Frameworks: Improved Fluorescence via Flexible Building Blocks and Selective Sensing of Nitroaromatic Explosives DOI
Yuwei Zhang,

Dongxue Wei,

Wenzhuo Zhang

et al.

Macromolecular Rapid Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 28, 2024

Abstract 2D covalent organic frameworks (COFs) are attractive for fluorescence sensing due to their lightweight, robust, and highly ordered porous structures. However, the conjugated structures between adjacent layers of can often result in aggregation‐caused quenching (ACQ) properties. Here, study designs two flexible hydrazone‐linked COFs suppress ACQ effects, thereby enhancing luminescent activities. Furthermore, high density nitrogen oxygen atoms on these walls serves as binding sites hydrogen bonding interactions, indicating sensitivity selectivity towards 2,4,6‐trinitrophenol detection.

Language: Английский

Recent Progress in Using Covalent Organic Frameworks to Stabilize Metal Anodes for Highly‐Efficient Rechargeable Batteries DOI Creative Commons
Jianlu Sun, Fangyuan Kang,

Dongbo Yan

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(28)

Published: May 7, 2024

Alkali metals (e.g. Li, Na, and K) multivalent Zn, Mg, Ca, Al) have become star anodes for developing high-energy-density rechargeable batteries due to their high theoretical capacity excellent conductivity. However, the inevitable dendrites unstable interfaces of metal pose challenges safety stability batteries. To address these issues, covalent organic frameworks (COFs), as emerging materials, been widely investigated regular porous structure, flexible molecular design, specific surface area. In this minireview, we summarize research progress COFs in stabilizing anodes. First, present origins delve into advantages based on physical/chemical properties alkali metals. Then, special attention has paid application host design anodes, artificial solid electrolyte interfaces, additives, solid-state electrolytes, separator modifications. Finally, a new perspective is provided from pore modulation, synthesis COFs.

Language: Английский

Citations

41
Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries DOI
Xinyu Wu, Shuo‐Qing Zhang, Xiaoyi Xu

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(11)

Published: Jan. 16, 2024

Abstract The growth of disorganized lithium dendrites and weak solid electrolyte interphase greatly impede the practical application metal batteries. Herein, we designed synthesized a new kind stable polyimide covalent organic frameworks (COFs), which have high density well‐aligned lithiophilic quinoxaline phthalimide units anchored within uniform one‐dimensional channels. COFs can serve as an artificial on anode, effectively guiding deposition ions inhibiting dendrites. unsymmetrical Li||COF−Cu battery exhibits Coulombic efficiency 99 % at current 0.5 mA cm −2 , be well retained up to 400 cycles. Meanwhile, Li‐COF||LFP full cell shows over charge 0.3 C. And its capacity maintained 91 even after 150 Therefore, significant electrochemical cycling stability illustrates feasibility employing in solving disordered

Language: Английский

Citations

38
Covalent Organic Framework-Based Materials for Advanced Lithium Metal Batteries DOI

Jiaojiao Xue,

Zixu Sun, Bowen Sun

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(27), P. 17439 - 17468

Published: June 27, 2024

Lithium metal batteries (LMBs), with high energy densities, are strong contenders for the next generation of storage systems. Nevertheless, unregulated growth lithium dendrites and unstable solid electrolyte interphase (SEI) significantly hamper their cycling efficiency raise serious safety concerns, rendering LMBs unfeasible real-world implementation. Covalent organic frameworks (COFs) derivatives have emerged as multifunctional materials significant potential addressing inherent problems anode electrode metal. This stems from abundant metal-affine functional groups, internal channels, widely tunable architecture. The original COFs, derivatives, COF-based composites can effectively guide uniform deposition ions by enhancing conductivity, transport efficiency, mechanical strength, thereby mitigating issue dendrite growth. review provides a comprehensive analysis derived employed challenges posed in LMB. Additionally, we present prospects recommendations design engineering architectures that render feasible practical applications.

Language: Английский

Citations

37
A bipolar-type covalent organic framework on carbon nanotubes with enhanced density of redox-active sites for high-performance lithium-ion batteries DOI

Qingmei Xu,

Zhixin Liu, Yucheng Jin

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(15), P. 5451 - 5460

Published: Jan. 1, 2024

A COF has been successfully fabricated onto carbon nanotubes as a cathode in LIBs with high energy density of 737.5 W h g −1 , representing the highest one among thus far reported LIB cathodes.

Language: Английский

Citations

21
Ionic Covalent Organic Framework Solid‐State Electrolytes DOI Creative Commons
Yoonseob Kim,

Chen Li,

Jun Huang

et al.

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
Three‐dimensional Covalent Organic Framework with Dense Lithiophilic Sites as Protective Layer to Enable High‐Performance Lithium Metal Battery DOI
Shuang Zheng, Yubin Fu,

Shuai Bi

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 5, 2024

Lithium (Li) metal batteries with remarkable energy densities are restrained by short lifetime and low Coulombic efficiency (CE), resulting from the accumulative Li dendrites dead during cycling. Here, we prepared a new three-dimensional (3D) covalent organic framework (COF) dense lithiophilic sites (heteoatom weight contents of 32.32 wt %) as an anodic protective layer batteries. The 3D COF was synthesized using [6+4] synthesis strategy inducing flexible 6-connected cyclotriphosphazene derivative aldehyde 4-connected porphyrin-based tetraphenylamines. Both phosphazene porphyrin rings in served electron-rich sites, enhancing homogeneous

Language: Английский

Citations

11
Recent Progress in Using Covalent Organic Frameworks to Stabilize Metal Anodes for Highly‐Efficient Rechargeable Batteries DOI Creative Commons
Jianlu Sun, Fangyuan Kang,

Dongbo Yan

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(28)

Published: May 7, 2024

Abstract Alkali metals (e.g. Li, Na, and K) multivalent Zn, Mg, Ca, Al) have become star anodes for developing high‐energy‐density rechargeable batteries due to their high theoretical capacity excellent conductivity. However, the inevitable dendrites unstable interfaces of metal pose challenges safety stability batteries. To address these issues, covalent organic frameworks (COFs), as emerging materials, been widely investigated regular porous structure, flexible molecular design, specific surface area. In this minireview, we summarize research progress COFs in stabilizing anodes. First, present origins delve into advantages based on physical/chemical properties alkali metals. Then, special attention has paid application host design anodes, artificial solid electrolyte interfaces, additives, solid‐state electrolytes, separator modifications. Finally, a new perspective is provided from pore modulation, synthesis COFs.

Language: Английский

Citations

10
Sustainable Release of LiNO3 from a Fluorine‐Decorated Metal–Organic Framework Separator to Enable High‐Performance Li‐Metal Batteries in Carbonate Electrolytes DOI Open Access

Mingcong Du,

Zhuobin He, Yaou Zhang

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 16, 2025

Abstract High‐voltage Li‐metal batteries hold great prospects for boosting energy density, while the anodes show poor compatibility with high‐voltage tolerant carbonate electrolytes, leading to unstable solid‐electrolyte interphase (SEI) and uncontrolled Li dendrites growth. Herein, a F‐decorated UIO‐66/polyimide (PI) functional separator encapsulated LiNO 3 (LNO@UIO‐66F/PI) is rationally designed regulate interfacial chemistry deposition behavior. Specifically, UIO‐66F nanoparticles in situ grown on PI fibers form continuous electronegative nanochannels, which promote rapid uniform + flux repelling anion migration. Furthermore, nanopores sustainably releases thin conductive N‐rich SEI. This synergy effect induces dense spherical behavior, effectively inhibiting growth of dendrites. Consequently, this LNO@UIO‐66F/PI demonstrates highly reversible plating/stripping over 1000 h at an extremely high current density 10 mA cm −2 also enables stable cycling Li||LiNi 0.8 Co 0.1 Mn O 2 cell cycles under cut‐off voltage 4.5 V, paving way practical application high‐energy‐density batteries.

Language: Английский

Citations

1
Synergistic Dual-Polar-Functionalized Metal–Organic Framework-Modified Separator for Stable and High-Performance Sodium Metal Batteries DOI
Jiaze Lv, Zhen Tang,

Qiman Zhang

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Sodium metal, regarded as an ideal anode material for high-energy-density rechargeable sodium metal batteries (SMBs), faces critical challenges, such sluggish Na+ transport kinetics and uncontrolled dendritic growth, which severely hinder its cycling stability practical applications. Herein, the well-designed, multifunctional separator, UFS2@GF, constructed using metal-organic frameworks functionalized with fluorinated (-F) sulfonic acid (-SO3H) groups, synergistically provides more nucleation sites deposition, thereby reducing overpotential achieving uniform deposition. The inorganic-rich solid electrolyte interphase induced by UFS2 facilitates a flux enhances charge transfer efficiency. Structural characterization density functional theory calculations further demonstrate that introduction of abundant sodiophilic provided -F -SO3H significantly energy barriers migration within framework, leading to higher transference number, superior ionic conductivity, accelerated ion transport. Because these synergistic effects, symmetric cell UFS2@GF achieves stable performance, enabling over 2500 h at 0.25 mA cm-2 while delivering excellent specific capacity 87.3 g-1 10C in Na∥Na3V2(PO4)3 cells. These results highlight role group strategies addressing limitations SMBs.

Language: Английский

Citations

1
Lithiophilic Covalent Organic Framework as Anode Coating for High‐Performance Lithium Metal Batteries DOI
Xinyu Wu, Shuo‐Qing Zhang, Xiaoyi Xu

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(11)

Published: Jan. 16, 2024

Abstract The growth of disorganized lithium dendrites and weak solid electrolyte interphase greatly impede the practical application metal batteries. Herein, we designed synthesized a new kind stable polyimide covalent organic frameworks (COFs), which have high density well‐aligned lithiophilic quinoxaline phthalimide units anchored within uniform one‐dimensional channels. COFs can serve as an artificial on anode, effectively guiding deposition ions inhibiting dendrites. unsymmetrical Li||COF−Cu battery exhibits Coulombic efficiency 99 % at current 0.5 mA cm −2 , be well retained up to 400 cycles. Meanwhile, Li‐COF||LFP full cell shows over charge 0.3 C. And its capacity maintained 91 even after 150 Therefore, significant electrochemical cycling stability illustrates feasibility employing in solving disordered

Language: Английский

Citations

8