Industrial-scale synthesis and application of covalent organic frameworks in lithium battery technology

Ghafari, Adel; Yeklangi, Akbar Ghasemi; Sima, Faeze Asgari; Akbari, Somayeh

doi:10.1007/s10800-023-01964-2

Cited by 5 publications

(4 citation statements)

References 222 publications

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“…COFs exhibit high chemical stability owing to their robust skeleton linked by strong covalent bonds. 46,69,95 However, the functionalities of COFs are restricted by the lack of active metal centers, which can promote ion adsorption and guide uniform metal deposition. Recently, Ni-bis(dithiolene) centers are introduced into COFs to construct a stable interface to improve LMB stability.…”

Section: Porous Crystalline Framework (Pcfs)mentioning

confidence: 99%

Interfacial chemistry regulation using functional frameworks for stable metal batteries

Huang,

Geng,

Zhang

et al. 2024

J. Mater. Chem. A

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Section: Porous Crystalline Framework (Pcfs)mentioning

confidence: 99%

Interfacial chemistry regulation using functional frameworks for stable metal batteries

Huang,

Geng,

Zhang

et al. 2024

J. Mater. Chem. A

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“…How to select monomers to synthesize the required COFs materials is also a major problem. Dynamic covalent chemistry is the scientific basis for the directional design of COFs, which gives the covalent assembly process its error correction ability, and is the key to achieving crystallinity and stability at the same time [ 73 , 74 , 75 , 76 , 77 , 78 ]. However, ‘crystallinity’ and ‘stability’ are often ‘trade-offs’ in the synthesis and preparation of COFs: on the one hand, the reversible covalent bonds used in the synthesis of highly crystalline COFs are easily decomposed during charging and discharging, which greatly limits their application; on the other hand, although covalent bonds with relatively poor reversibility can also be used to prepare COFs with higher stability, they often sacrifice crystallinity, resulting in structures with low porosity and fewer ion transport channels.…”

Section: Structural Design Of Cofs For Cathode Materialsmentioning

confidence: 99%

Recent Progress in Covalent Organic Frameworks for Cathode Materials

Wang,

Tian,

Chen

et al. 2024

Polymers

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Covalent organic frameworks (COFs) are constructed from small organic molecules through reversible covalent bonds, and are therefore considered a special type of polymer. Small organic molecules are divided into nodes and connectors based on their roles in the COF’s structure. The connector generally forms reversible covalent bonds with the node through two reactive end groups. The adjustment of the length of the connector facilitates the adjustment of pore size. Due to the diversity of organic small molecules and reversible covalent bonds, COFs have formed a large family since their synthesis in 2005. Among them, a type of COF containing redox active groups such as –C=O–, –C=N–, and –N=N– has received widespread attention in the field of energy storage. The ordered crystal structure of COFs ensures the ordered arrangement and consistent size of pores, which is conducive to the formation of unobstructed ion channels, giving these COFs a high-rate performance and a long cycle life. The voltage and specific capacity jointly determine the energy density of cathode materials. For the COFs’ cathode materials, the voltage plateau of their active sites’ VS metallic lithium is mostly between 2 and 3 V, which has great room for improvement. However, there is currently no feasible strategy for this. Therefore, previous studies mainly improved the theoretical specific capacity of the COFs’ cathode materials by increasing the number of active sites. We have summarized the progress in the research on these types of COFs in recent years and found that the redox active functional groups of these COFs can be divided into six subcategories. According to the different active functional groups, these COFs are also divided into six subcategories. Here, we summarize the structure, synthesis unit, specific surface area, specific capacity, and voltage range of these cathode COFs.

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“…Covalent organic frameworks (COFs) as the crystalline polymer are generally prepared by the covalent linkage of organic building blocks, possessing the merits of a long-range ordered framework, extended π-conjugation, and well-tuned microporosity . Notably, carbonyl constituents could be employed as the primary building units of COFs, which could endow the pseudocapacitive energy storage feature. − Thus, COF with redox-active group plays a crucial role in high-performance EES systems. For instance, based on the molecular design, DeBlase et al have incorporated the 2,6-diaminoanthraquinone (DAAQ) moiety into a 2D COF linked by β-ketoenamines (Figure m and Figure n) .…”

Section: Redox-active Feature For Electrodementioning

confidence: 99%

Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

Zou,

Deng,

Silvester

et al. 2024

ACS Nano

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On the basis of the sustainable concept, organic compounds and carbon materials both mainly composed of light C element have been regarded as powerful candidates for advanced electrochemical energy storage (EES) systems, due to theie merits of low cost, eco-friendliness, renewability, and structural versatility. It is investigated that the carbonyl functionality as the most common constituent part serves a crucial role, which manifests respective different mechanisms in the various aspects of EES systems. Notably, a systematical review about the concept and progress for carbonyl chemistry is beneficial for ensuring in-depth comprehending of carbonyl functionality. Hence, a comprehensive review about carbonyl chemistry has been summarized based on state-of-the-art developments. Moreover, the working principles and fundamental properties of the carbonyl unit have been discussed, which has been generalized in three aspects, including redox activity, the interaction effect, and compensation characteristic. Meanwhile, the pivotal characterization technologies have also been illustrated for purposefully studying the related structure, redox mechanism, and electrochemical performance to profitably understand the carbonyl chemistry. Finally, the current challenges and promising directions are concluded, aiming to afford significant guidance for the optimal utilization of carbonyl moiety and propel practicality in EES systems.

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Industrial-scale synthesis and application of covalent organic frameworks in lithium battery technology

Cited by 5 publications

References 222 publications

Interfacial chemistry regulation using functional frameworks for stable metal batteries

Interfacial chemistry regulation using functional frameworks for stable metal batteries

Recent Progress in Covalent Organic Frameworks for Cathode Materials

Carbonyl Chemistry for Advanced Electrochemical Energy Storage Systems

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