Self-exfoliated covalent organic framework nano-mesh enabled regular charge distribution for highly stable lithium metal battery

Zhang, Yunrui; Wang, Wenbo; Hou, Meiling; Zhang, Yantao; Dou, Yaying; Yang, Zehua; Xu, Xiaoyang; Liu, Haining; Qiao, Shanlin

doi:10.1016/j.ensm.2022.02.029

Cited by 38 publications

(26 citation statements)

References 50 publications

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“…[58,62,67] The ion-conducting COFs exhibit the superior ionic conductivity, excellent mechanical properties, and low electron conductivity, which are expected to be a promising artificial interphase to stabilize electrode structure for long cycling life span and high-rate performance of rechargeable batteries (Table S4, Supporting Information). [225,228,[277][278][279][280][281][282][283][284][285] Lou and co-workers employed lithium-conducting COF as artificial SEI at Si anode (Figure 16a). [277] The COF layer was uniformly coated on the Si nanoparticles (Figure 16b).…”

Section: Artificial Interphasementioning

confidence: 99%

“…[ 58,62,67 ] The ion‐conducting COFs exhibit the superior ionic conductivity, excellent mechanical properties, and low electron conductivity, which are expected to be a promising artificial interphase to stabilize electrode structure for long cycling life span and high‐rate performance of rechargeable batteries (Table S4, Supporting Information). [ 225,228,277–285 ]…”

Section: Applications Of Ion‐conducting Cof In Rechargeable Batteriesmentioning

confidence: 99%

“…Qiao and co‐workers constructed a self‐exfoliated TpTG COF as an artificial SEI film. [ 281 ] The abundant lithiophilic sites (CO, NC) could promote the formation of homogeneous single Li + ions transport and certainly expedite Li + migration kinetics. The repulsion of TFSI − could also efficaciously alleviate severe concentration gradients.…”

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

102

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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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Section: Artificial Interphasementioning

confidence: 99%

Section: Applications Of Ion‐conducting Cof In Rechargeable Batteriesmentioning

confidence: 99%

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

102

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“…[4][5][6] The uneven lithium plating behavior finally leads to uncontrollable growth of anisotropic lithium dendrite and dead lithium, causing low Coulombic efficiency and loose deposition morphology. [7][8][9] Therefore, one of the keys to optimizing lithium metal batteries is controlling the plating of Li + to suppress lithium dendrite growth.…”

Section: Doi: 101002/smll202205571mentioning

confidence: 99%

Regulating Lithium Plating/Stripping Behavior by a Composite Polymer Electrolyte Endowed with Designated Ion Channels

Sun

Hou

et al. 2022

Small

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The urgent demand for high energy and safety storage devices is pushing the development of lithium metal batteries. However, unstable solid electrolyte interface (SEI) formation and uncontrollable lithium dendrite growth are still huge challenges for the practical use of lithium metal batteries. Herein, a composite polymer electrolyte (CPE) endowed with designated ion channels is fabricated by constructing nanoscale Uio66‐NH2 layer, which has uniformly distributed pore structure to regulate reversible Li plating/stripping in lithium metal batteries. The regular channels within the Uio66‐NH2 layer work as an ion sieve to restrict larger TFSI− anions inside its channels and extract Li+ across selectively, which result in a high Li‐ion transference number (tLi+${t_{{\rm{L}}{{\rm{i}}^{\bm{ + }}}}}$) of 0.6. Moreover, CPE provides high ion conductivity (0.245 mS cm−1 at room temperature) and expanded oxidation window (5.1 V) and forms a stable SEI layer. As a result, the assembled lithium metal batteries with CPE exhibit outstanding cyclic stability and capacity retention. The Li/CPE/Li symmetric cell continues plating/stripping over 500 h without short‐circuiting. The Li/CPE/LFP cell delivers a reversible capacity of 149.3 mAh g−1 with a capacity retention of 99% after 100 cycles.

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“…[124][125][126][127] In particular, 2D COFs have aroused considerable interest from researchers because of their important application value in the eld of energy storage. [128][129][130][131] The transport through the frameworks greatly increases the migration rate of lithium ions and electrons, which greatly enhances the reaction kinetics of the active sulfur. 132 Moreover, the nanopores in COF materials strongly conne lithium poly-sulde, and the formed triazine, imine and other groups can cross-link with sulfur through lithiophilic and/or sulfurophilic action, which can limit the soluble polysulde to the cathode region, ensuring a high sulfur utilization rate and excellent cycle stability in Li-S batteries.…”

Section: Covalent Organic Frameworkmentioning

confidence: 99%

Molecular structure-controlled synthesis of sulfur-containing polymers for rechargeable Li–S batteries

Cheng

Chen

et al. 2022

J. Mater. Chem. A

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Self-exfoliated covalent organic framework nano-mesh enabled regular charge distribution for highly stable lithium metal battery

Cited by 38 publications

References 50 publications

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

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

Regulating Lithium Plating/Stripping Behavior by a Composite Polymer Electrolyte Endowed with Designated Ion Channels

Molecular structure-controlled synthesis of sulfur-containing polymers for rechargeable Li–S batteries

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