Rapid, Mild, and Catalytic Synthesis of 2D and 3D COFs with Promising Supercapacitor Applications

Khojastehnezhad, Amir; Rhili, Khaled; Shehab, Mohammad K.; Gamraoui, Hichem; Peng, Zhiyuan; Samih ElDouhaibi, Ahmad; Touzani, Rachid; Hammouti, Belkheir; El-Kaderi, Hani M.; Siaj, Mohamed

doi:10.1021/acsaem.3c01913

Cited by 8 publications

(2 citation statements)

References 67 publications

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“…Covalent organic frameworks (COFs) are crystalline organic polymers built by connecting organic building blocks together with strong covalent bonds. − The structural and chemical composition of COFs can be tailored to target many applications such as electrochemical energy storage, − drug delivery, , gas separation and storage, , water harvesting, , heavy metal removal, , and catalysis. − For instance, COFs have shown great promise in supercapacitors, − pseudocapacitors, ,, and rechargeable batteries. − The highly cross-linked nature of COFs prevents dissolution in electrolytes, while π-conjugation and porosity secure rapid charge transfer and ion transport. Because ion storage in COFs is not limited to intercalation, as in the case of graphite, COFs can be applied as electrode materials to store large ions like sodium, potassium, and aluminum .…”

Section: Introductionmentioning

confidence: 99%

“… 1 − 3 The structural and chemical composition of COFs can be tailored to target many applications such as electrochemical energy storage, 4 − 8 drug delivery, 9 , 10 gas separation and storage, 11 , 12 water harvesting, 13 , 14 heavy metal removal, 15 , 16 and catalysis. 17 − 19 For instance, COFs have shown great promise in supercapacitors, 20 − 22 pseudocapacitors, 4 , 8 , 23 and rechargeable batteries. 24 − 27 The highly cross-linked nature of COFs prevents dissolution in electrolytes, while π-conjugation and porosity secure rapid charge transfer and ion transport.…”

Section: Introductionmentioning

confidence: 99%

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High Sodium Ion Storage by Multifunctional Covalent Organic Frameworks for Sustainable Sodium Batteries

Shehab,

El-Kaderi

2024

ACS Appl. Mater. Interfaces

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Rechargeable sodium batteries hold great promise for circumventing the increasing demand for lithium-ion batteries (LIBs) and the limited supply of lithium. However, efficient sodium ion storage remains a great impediment in this field. In this study, we report the designed synthesis of a multifunctional two-dimensional covalent organic framework featuring hexaazatrinaphthalene cores linked by imidazole moieties and demonstrate its effective performance in sodium ion storage. Benzimidazole-linked covalent organic framework (BCOF-1) was synthesized by a condensation reaction between hexaazatrinaphthalenehexamine (HATNHA) and terephthalaldehyde (TA) and exhibited a high theoretical specific capacity of 392 mA h g −1 . BCOF-1 crystallizes, forming eclipsed AA stacking and mesoporous hexagonal one-dimensional channels with high surface area (840 m 2 g −1 ), facilitating fast ionic mobility and charge transfer and enabling high-rate capability at high current rates. BCOF-1 exhibits pseudocapacitive-like behavior with a high specific capacity of 387 mA h g −1 , an energy density of 302 W h kg −1 at 0.1 C, and a power density of 682 W kg −1 at 5 C. Our results demonstrate that redoxactive COFs have the desired structural and electronic merits to advance the use of organic electrodes in sodium-ion storage toward sustainable and efficient batteries.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High Sodium Ion Storage by Multifunctional Covalent Organic Frameworks for Sustainable Sodium Batteries

Shehab,

El-Kaderi

2024

ACS Appl. Mater. Interfaces

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Unraveling the Mechanism of Covalent Organic Frameworks‐Based Functional Separators in High‐Energy Batteries

Li,

Hao,

Cao

et al. 2024

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Covalent organic frameworks (COFs) are promising porous materials due to their high specific surface area, adjustable structure, highly ordered nanochannels, and abundant functional groups, which brings about wide applications in the field of gas adsorption, hydrogen storage, optics, and so forth. In recent years, COFs have attracted considerable attention in electrochemical energy storage and conversion. Specifically, COF‐based functional separators are ideal candidates for addressing the ionic transport‐related issues in high‐energy batteries, such as dendritic formation and shuttle effect. Therefore, it is necessary to make a comprehensive understanding of the mechanism of COFs in functional separators. In this review, the advantages, applications as well as synthesis of COFs are firstly presented. Then, the mechanism of COFs in functional separators for high‐energy batteries is summarized in detail, including pore channels regulating ionic transport, functional groups regulating ionic transport, adsorption effect, and catalytic effect. Finally, the application prospect of COFs‐based separators in high‐energy batteries is proposed. This review may provide new insights into the design of functional separators for advanced electrochemical energy storage and conversion systems.

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Advances and challenges in covalent organic frameworks as an emerging class of materials for energy and environmental concerns

Ampong,

Effah,

Tsiwah

et al. 2024

Coordination Chemistry Reviews

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Rapid, Mild, and Catalytic Synthesis of 2D and 3D COFs with Promising Supercapacitor Applications

Cited by 8 publications

References 67 publications

High Sodium Ion Storage by Multifunctional Covalent Organic Frameworks for Sustainable Sodium Batteries

High Sodium Ion Storage by Multifunctional Covalent Organic Frameworks for Sustainable Sodium Batteries

Unraveling the Mechanism of Covalent Organic Frameworks‐Based Functional Separators in High‐Energy Batteries

Advances and challenges in covalent organic frameworks as an emerging class of materials for energy and environmental concerns

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