<i>In situ</i> construction of redox-active covalent organic frameworks/carbon nanotube composites as anodes for lithium-ion batteries

Yang, Xiubei; Lin, Chao; Han, Diandian; Li, Gaojie; Huang, Chao; Liu, Jing; Wu, Xueling; Zhai, Lipeng; Mi, Liwei

doi:10.1039/d1ta09433e

Cited by 54 publications

(47 citation statements)

References 35 publications

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“…[38][39][40] The key reason is that these unique frameworks can provide nanoporous and crystalline structures that facilitate charge-involved reactions. 41,42 Theoretically, the homogeneous pores of these frameworks can be preciously controlled, thereby exhibiting enhanced molecular and ionic sieving capabilities. These features render MOF-based nanomaterials great potential in electrochemical systems.…”

Section: Resultsmentioning

confidence: 99%

A metal–organic framework-modified separator enables long cycling lithium-ion capacitors with asymmetric electrolyte design

Zhang

Wang

et al. 2022

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 99%

A metal–organic framework-modified separator enables long cycling lithium-ion capacitors with asymmetric electrolyte design

Zhang

Wang

et al. 2022

J. Mater. Chem. A

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“…[ 3,22,23,44–49,120–130 ] Moreover, the emerging ion‐conducting COFs with excellent ionic conductivity and high cation transfer number can reduce the battery polarization and improve the charging/discharging kinetics of electrodes. [ 131–143 ] The distinctive directional selectivity of ionic conduction in COFs is obviously different from the typical inorganic solid conductors and polymer conductors, so that COFs are suitable for diverse battery applications, including lithium‐ion, [ 144–166 ] lithium–sulfur, [ 167–208 ] sodium‐ion, [ 209–214 ] potassium‐ion, [ 215–219 ] lithium–CO 2 , [ 220–223 ] zinc‐ion, [ 224–230 ] zinc–air batteries, [ 231–234 ] etc. In this section, the traditional classification method of battery types is replaced by the classification according to the components among the dif...…”

Section: Applications Of Ion‐conducting Cof In Rechargeable Batteriesmentioning

confidence: 99%

Section: Applications Of Ion‐conducting Cof In Rechargeable Batteriesmentioning

confidence: 99%

“…Mi and co‐workers used TPDA (pyrazine‐2,5‐diamine)COF as anodes for LIBs via the controlled growth of COF layers with different thicknesses on carbon nanotubes (CNTs). [ 166 ] As shown in Figure 11c, the TPDACOF@CNT‐2 displayed the smaller thickness of COF layer that that of TPDACOF@CNT‐1, and the TPDACOF@CNT‐2 anode exhibited better rate performance. It elucidated that the thin layer on CNT could provide more exposed and accessible redox‐active sites and shorten the ion/electron diffusion distance, which were beneficial for obtaining fast Li + diffusion kinetics and high reversible capacity.…”

Section: Applications Of Ion‐conducting Cof In Rechargeable Batteriesmentioning

confidence: 99%

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Covalent Organic Framework for Rechargeable Batteries: Mechanisms and Properties of Ionic Conduction

Cao

Wang

et al. 2022

Advanced Energy Materials

104

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The ionic conduction plays an important role in the charging/discharging kinetics in rechargeable batteries, mainly including the steps of diffusion in the electrodes, transport in the electrolytes, and permeation through the electrode/electrolyte interphases. [8][9][10] Generally, the ionic transport is a critical control step in the electrochemical reactions, because it is much slower kinetics than electron transport. [8,11] Thus, regulating the ion-transport behavior is very vital to achieve fast-charging secondary batteries. [6,12] Mechanism exploration and novel material design become two important strategies to tackle the sluggish ionconduction kinetics. [13][14][15][16][17] In the secondary battery, the environment of ionic conduction can be roughly divided into liquid electrolytes and solid conductors. The ionic diffusion in the liquid electrolytes can be very fast. However, the flammability of organic solvents and the instability of salts (such as LiPF 6 ) at elevated temperature limit its commercial application. [18,19] The solid conductor is a safer choice to replace the current liquid electrolyte, but still suffers a serious impediment of low ionic conductivity. [20,21] Recently, covalent organic frameworks (COFs), an emerging type of crystalline porous materials, are considered to be a potential solid conductor. [22,23] Depending on the topological establishment of building blocks, COFs are classified into 2D COFs and 3D COFs. Unless otherwise noted, the COFs in this review specifically refer to 2D COFs. 2D COFs typically crystallize as stacked sheets through the π-π interaction between adjacent monolayers, meanwhile the organic units are connected by the covalent bond to form reticular framework with periodic channel structure. [24][25][26][27] Based on the nature of synthetic reactions, COFs have been synthesized with boroxine, boronate ester, borosilicate, triazine, imine, hydrazone, borazine, imide, spiroborate, amide linkages, etc. [24,25] In addition, based on the symmetry of the monomers, COFs can be designed in various topologies, such as tetragonal, hexagonal, rhombic, and trigonal. [24,25] Over the recent decades, a variety of synthetic approaches have been developed to prepare COFs, such as solvothermal synthesis, microwave synthesis, ionothermal synthesis, mechanochemical synthesis, and interfacial synthesis. [24,25] Among them, the solvothermal synthesis under a sealed vessel with a suitable temperature can produce highly crystalline COFs, but this method always needs a long Ionic conduction plays a critical role in the process of electrode reactions and the charge transfer kinetics in a rechargeable battery. Covalent organic frameworks (COFs) have emerged as an exciting new class of ionic conductors, and have made great progress in terms of their application in rechargeable batteries. The unique features of COFs, such as well-defined directional channels, functional diversity, and structural robustness, endow COF-based conductors with a low ionic diffusion energy barrier and excellent t...

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Covalent–Organic Framework (COF)‐Core–Shell Composites: Classification, Synthesis, Properties, and Applications

Li,

Pan,

Shao

et al. 2023

Adv Funct Materials

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Core–shell structures, where the “guest” material is encapsulated within a protective shell, integrate the advantages of different materials to enhance the overall properties of the composite. Covalent–organic frameworks (COFs) are favorable candidates for composing core–shell structures due to their inherent porosity, good activity, excellent stability, and other advantages. In particular, COFs as shells to encapsulate other functional materials are becoming increasingly popular in the fields of environmental remediation and energy conversion. However, there is a lack of reviews on COF‐based core–shell materials. In this context, this review provides a systematic summary of the current research on COF‐based core–shell composites. First, a simple classification is made for COF‐based core–shell composites. The second part of the review describes the main synthesis methods. The changes brought about by the COF shell and core–shell structures on the properties of the composites and their applications in photocatalysis, electrocatalysis, adsorption, sensing, and supercapacitors are then emphasized. Finally, new perspectives on the future development and challenges of composites are presented. The purpose of this study is to provide future insights into the design and application of COF‐based core–shell composites.

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In situ construction of redox-active covalent organic frameworks/carbon nanotube composites as anodes for lithium-ion batteries

Abstract: Covalent organic frameworks (COFs) with reversible redox-active sites showed great potential application in constructing electrode materials of lithium-ion batteries (LIBs), whereas their further application is largely restricted by the poor...

Cited by 54 publications

References 35 publications

A metal–organic framework-modified separator enables long cycling lithium-ion capacitors with asymmetric electrolyte design

A metal–organic framework-modified separator enables long cycling lithium-ion capacitors with asymmetric electrolyte design

Covalent Organic Framework for Rechargeable Batteries: Mechanisms and Properties of Ionic Conduction

Covalent–Organic Framework (COF)‐Core–Shell Composites: Classification, Synthesis, Properties, and Applications

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