Covalent organic frameworks as electrode materials for rechargeable metal‐ion batteries

Interdisciplinary materials, Journal Year: 2023, Volume and Issue: 2(2), P. 231 - 259

Published: Feb. 9, 2023

Abstract Covalent organic frameworks (COFs), as a class of crystalline porous polymers, featuring designable structures, tunable frameworks, well‐defined channels, and tailorable functionalities, have emerged promising electrode materials for rechargeable metal‐ion batteries in recent years. Tremendous efforts been devoted to improving the electrochemical performance COFs. However, although significant achievements made, behaviors developed COFs are far away from desirable practical owing intrinsic problems, such poor electronic conductivity, trade‐off relationship between capacity redox potential, unfavorable micromorphology. In this review, progress development is presented, including Li, Na, K, Zn ion batteries. Various research strategies summarized terms molecular‐level design material‐level modification. Finally, major challenges perspectives also discussed aspect large‐scale production improvements.

Language: Английский

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Solvent‐Free Synthesis of Covalent Organic Framework/Graphene Nanohybrids: High‐Performance Faradaic Cathodes for Supercapacitors and Hybrid Capacitive Deionization

Small, Journal Year: 2023, Volume and Issue: 20(12)

Published: Nov. 10, 2023

Abstract Covalent organic frameworks (COFs) with flexible periodic skeletons and ordered nanoporous structures have attracted much attention as potential candidate electrode materials for green energy storage efficient seawater desalination. Further improving the intrinsic electronic conductivity releasing porosity of COF‐based is a necessary strategy to improve their electrochemical performance. Herein, employed graphene conductive substrate in situ grow 2D redox‐active COF (TFPDQ‐COF) redox activity under solvent‐free conditions prepare TFPDQ‐COF/graphene (TFPDQGO) nanohybrids explores application both supercapacitor hybrid capacitive deionization (HCDI). By optimizing hybridization ratio, TFPDQGO exhibits large specific capacitance 429.0 F g −1 due synergistic effect charge transport highway provided by layers abundant centers contained skeleton, assembled TFPDQGO//activated carbon (AC) asymmetric possesses high output 59.4 Wh kg at power density 950 W good cycling life. Furthermore, maximum salt adsorption capacity (SAC) 58.4 mg stable regeneration performance attained TFPDQGO‐based HCDI. This study highlights new opportunities acting high‐performance HCDI materials.

Language: Английский

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Covalent Organic Framework-Based Materials for Advanced Lithium Metal Batteries

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

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A covalent organic framework as a dual-active-center cathode for a high-performance aqueous zinc-ion battery

Chemical Science, Journal Year: 2024, Volume and Issue: 15(12), P. 4341 - 4348

Published: Jan. 1, 2024

Organic electrode materials have shown significant potential for aqueous Zn ion batteries (AZIBs) due to their flexible structure designability and cost advantage. However, sluggish ionic diffusion, high solubility, low capacities limit practical application. Here, we designed a covalent organic framework (TA-PTO-COF) generated by covalently bonding tris(4-formylbiphenyl)amine (TA) 2,7-diaminopyrene-4,5,9,10-tetraone (PTO-NH

Language: Английский

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

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

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Heterointerface regulation of covalent organic framework-anchored graphene via a solvent-free strategy for high-performance supercapacitor and hybrid capacitive deionization electrodes

Materials Horizons, Journal Year: 2024, Volume and Issue: 11(12), P. 2974 - 2985

Published: Jan. 1, 2024

A 2D redox-active pyrazine-based COF was solvent-free anchored on graphene for heterointerface regulation, displaying exciting energy storage and desalination performances.

Language: Английский

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Constructing 2D Sandwich‐like MOF/MXene Heterostructures for Durable and Fast Aqueous Zinc‐Ion Batteries

Angewandte Chemie, Journal Year: 2022, Volume and Issue: 135(8)

Published: Dec. 23, 2022

Abstract Two‐dimensional metal–organic frameworks (2D MOFs) can be used as the cathodes for high‐performance zinc‐ion battery due to their large one‐dimensional channels. However, conventionally poor electrical conductivity and low structural stability hinder advances. Herein, we report an alternately stacked MOF/MX heterostructure, exhibiting 2D sandwich‐like structure with abundant active sites, improved exceptional stability. Ex situ characterizations theoretical calculations reveal a reversible intercalation mechanism of zinc ions high in heterostructure. Electrochemical tests confirm excellent Zn 2+ migration kinetics ideal pseudocapacitive behaviors. As consequence, Cu‐HHTP/MX shows superior rate performance (260.1 mAh g −1 at 0.1 A 173.1 4 ) long‐term cycling 92.5 % capacity retention over 1000 cycles .

Language: Английский

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Covalent Organic Frameworks (COFs)/MXenes Heterostructures for Electrochemical Energy Storage

Crystal Growth & Design, Journal Year: 2023, Volume and Issue: 23(5), P. 3057 - 3078

Published: April 3, 2023

Covalent organic frameworks (COFs), a distinguished class of porous materials exhibiting precise modularity and crystallinity, two-dimensional (2D) MXenes, highly conductive, atomic layered transition metal carbides or nitrides carbonitrides, are the two fascinating classes advanced that have been intensively researched for energy storage recently. Thanks to high surface area porosity COFs electrical conductivity coupled with redox active surfaces they shown great potential in applications such as batteries supercapacitors. However, their electrochemical performance is limited by several inherent issues restacking tendency MXene sheets low COFs, when applied individually. Combining MXenes into heterostructures use single electrode helps overcoming challenges improving capability. The current perspective intends provide an overview designing COF/MXene context applications. research gaps exist governing factors capability also highlighted opportunities.

Language: Английский

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Advances in the Field of Graphene-Based Composites for Energy–Storage Applications

Crystals, Journal Year: 2023, Volume and Issue: 13(6), P. 912 - 912

Published: June 4, 2023

To meet the growing demand in energy, great efforts have been devoted to improving performances of energy–storages. Graphene, a remarkable two-dimensional (2D) material, holds immense potential for energy–storage performance owing its exceptional properties, such as large-specific surface area, thermal conductivity, excellent mechanical strength, and high-electronic mobility. This review provides comprehensive summary recent research advancements application graphene energy–storage. Initially, fundamental properties are introduced. Subsequently, latest developments graphene-based energy–storage, encompassing lithium-ion batteries, sodium-ion supercapacitors, potassium-ion batteries aluminum-ion summarized. Finally, challenges associated with applications discussed, development prospects this field outlined.

Language: Английский

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An In Situ Fabricated Graphene/Bipolar Polymer Hybrid Material Delivers Ultralong Cycle Life over 15 000 Cycles as a High‐Performance Electrode Material

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(16)

Published: Feb. 13, 2023

Organic electrode materials are promising for the future energy storage systems owing to their tunable structures, abundant resources, and environmental friendliness. Many advanced lithium-ion batteries with organic electrodes have been developed show excellent performance. However, developing overall superior performance still faces great challenges, such as low capacity, poor stability, inferior conductivity, utilization of active sites. To address these issues, a bipolar polymer (Fc-DAB) is designed further polymerized in situ three-dimensional graphene (3DG), offering hybrid material (Fc-DAB@3DG) variety merits. Fc-DAB possesses stable backbone multiple redox-active sites that can improve stability capacity simultaneously. The embedded highly conductive 3DG network endows Fc-DAB@3DG framework, large surface area, porous morphology all together, so fast diffusion ions/electrons be achieved, leading high enhanced electrochemical As result, cathode delivers ≈260 mA h g-1 at 25 , ultra-long cycle life over 15 000 cycles 2000 retention 99.999% per cycle, remarkable rate quasi-solid Li-metal battery full cell fabricated using this also exhibit

Language: Английский

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