Covalent organic framework-based ultrathin crystalline porous film: manipulating uniformity of fluoride distribution for stabilizing lithium metal anode

Zhao, Zedong; Chen, Wuji; Impeng, Sarawoot; Li, Mengxiong; Wang, Rong; Liu, Yicheng; Zhang, Long; Dong, Lei; Unruangsri, Junjuda; Peng, Chengxin; Wang, Changchun; Namuangruk, Supawadee; Lee, Sang Young; Wang, Yonggang; Lu, Hongbin; Guo, Jia

doi:10.1039/c9ta13384d

Cited by 95 publications

(76 citation statements)

References 48 publications

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“…[ 24 ] Such abundance of LiF could be explained by SEI‐forming decomposition of the localized anions in ACOF. [ 25 ] Moreover, Si 2p spectrum of XPS (Figure S17, Supporting Information) and XRD pattern (Figure S18, Supporting Information) collectively confirm the structural stability of ACOF after cycling.…”

Section: Resultsmentioning

confidence: 81%

Electrolyte Interphase Built from Anionic Covalent Organic Frameworks for Lithium Dendrite Suppression

Tian

Shen

et al. 2021

Adv Funct Materials

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Lithium (Li) metal batteries hold considerable promise for numerous energydense applications. However, the dendritic Li anode produced during Li + /Li deposition-stripping endangers battery safety and shortens cycle lifespan. Herein, an electrolyte interphase built from 2D anionic covalent organic frameworks (ACOF) is coated on Li for dendrite suppression. The ACOF with Li + -affinity facilitates rapid and exclusive passage of Li-ions from the electrolyte, yielding near-unity Li + transference number (0.82) and ionic conductivity beyond 3.7 mS cm -1 at the interphase. Such high transport efficiency of Li-ions can fundamentally circumvent the Li + deficiency that results in dendrite formation. Pairing the ACOF-coated Li against a high-voltage LiCoO 2 cathode (4.5 V) achieves exceptional cycle stability, mitigated polarization, as well as improved rate capability. Accordingly, this strategy vastly expands the pool of electrolyte interphases that can be used for coating and protecting Li anode.

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Section: Resultsmentioning

confidence: 81%

Electrolyte Interphase Built from Anionic Covalent Organic Frameworks for Lithium Dendrite Suppression

Tian

Shen

et al. 2021

Adv Funct Materials

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“…[ 1–10 ] New energy storage systems, such as silicon‐based anodes, lithium metal anodes, and lithium–sulfur batteries, exhibit increased capacity and energy density; sodium‐ion and potassium‐ion batteries can solve the problem of cost and resource shortages. [ 11–18 ] However, safety and environmental hazards caused by the toxicity and flammability of the organic electrolyte still exist. [ 19–23 ] Currently, aqueous rechargeable batteries are considered promising alternatives to LIBs because they contain flame‐retardant, nontoxic, low‐cost, and high‐ionic‐conductivity water‐based electrolytes.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Analyses of Aqueous Zn Metal Batteries: Characterization Methods, Simulations, and Theoretical Calculations

Zhang

Hou

2021

Advanced Energy Materials

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Aqueous zinc metal batteries (AZMBs) are regarded as competitive candidates for next‐generation energy storage owing to their low cost, high performance, high safety, and high environmental friendliness. However, serious issues, including Zn dendrites, chemical corrosion, H2 evolution, and sluggish Zn2+ diffusion kinetics, have largely impeded the commercial application of AZMBs. To understand these issues in depth and identify countermeasures, comprehensive analyses of AZMBs have continuously been developed. In this review, a detailed overview of the analytical techniques used to study AZMBs, including characterization methods, simulations, and theoretical calculations is presented, which provides a comprehensive toolbox for further research. Conventional characterization methods that provide preliminary information are first summarized. Various in situ techniques, including visualization and spectral characterization, are then discussed. These advanced real‐time monitoring techniques contribute to a deeper understanding of the battery failure mechanism. Simulations and theoretical calculations are then presented in detail, enabling an in‐depth investigation of the mechanism at the atomic level. Theoretical analyses can not only explore the mechanism in more detail, but also play a key role in guiding research and predicting future directions. Finally, the challenges and perspective of comprehensive analyses of AZMBs are discussed.

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“…The current research on lithium metal batteries is mainly focused on controlling artificial SEI membranes with stable structures. COFs with a large surface area, an adjustable pore size, structural predictability and stability are potential materials for constructing artificial SEI membranes . The pore structure of COFs can strictly limit the grain size of LiF and ensure its uniform distribution through periodic pore channels.…”

Section: Applications In Lithium‐metal Batteriesmentioning

confidence: 99%

“…The small voltage fluctuations of AP‐CTF‐LiF and the polarization of 36 mV observed throughout 700 cycles are mainly attributed to the uniform Li plating/stripping process. Similarly, Guo′s group also adopted the strategy of constructing a new artificial lithium/electrolyte mesophase. Electrochemically active COF ultrathin films are synthesized by interfacial aldimine condensation, in which the lithiophilic moieties are located in the large surface area COF film, and the lithium salt can be locally concentrated from the dilute electrolyte.…”

Section: Applications In Lithium‐metal Batteriesmentioning

confidence: 99%

“…Regarding the applications for next‐generation batteries, we first outline the application progress of COFs in sodium ion batteries (SIBs) and potassium ion batteries (PIBs) . Subsequently, the applications of COFs in lithium‐sulfur batteries (LSBs), lithium metal batteries (LMBs), and multivalent ion batteries (ZIBs, MIBs, AIBs) will be introduced. Finally, the challenges, prospects and improvement strategies of COF electrodes will be discussed and suggested.…”

Section: Introductionmentioning

confidence: 99%

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Covalent Organic Frameworks for Next‐Generation Batteries

2020

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the pore size and pore configuration and introducing functional groups into the framework through pre-synthesis and postsynthesis strategies, and these methods provide the possibility of obtaining high-performance organic electrode materials. In this review, the latest research progress and perspective on using COFs as electrode materials for next-generation batteries, including sodium-ion batteries, potassium-ion batteries, lithiumsulfur batteries, lithium-metal batteries, zinc-ion batteries, magnesium-ion batteries, and aluminum-ion batteries, are summarized. The relative energy-storage mechanism, advantages and challenges of COF electrodes, as well as the corresponding strategies used to achieve better electrochemical performances, are also presented.

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Covalent organic framework-based ultrathin crystalline porous film: manipulating uniformity of fluoride distribution for stabilizing lithium metal anode

Abstract: In situ formed LiF grains are confined and evenly distributed throughout a covalent organic framework (COF) film, which exhibits cooperative effectiveness to greatly stabilize the lithium metal.

Cited by 95 publications

References 48 publications

Electrolyte Interphase Built from Anionic Covalent Organic Frameworks for Lithium Dendrite Suppression

Electrolyte Interphase Built from Anionic Covalent Organic Frameworks for Lithium Dendrite Suppression

Comprehensive Analyses of Aqueous Zn Metal Batteries: Characterization Methods, Simulations, and Theoretical Calculations

Covalent Organic Frameworks for Next‐Generation Batteries

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