Covalent‐Induced Heterostructure of Covalent‐Organic Frameworks and MXene as Advanced Electrodes with Motivated Pseudocapacitance Performance

Geng, Qian; Wang, Haichao; Yang, Wei; Lv, Liping; Chen, Shuangqiang; Sun, Weiwei; Wang, Yong

doi:10.1002/celc.202200340

Cited by 17 publications

(28 citation statements)

References 70 publications

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“…In situ growth method is generally suitable for the preparation of polymer materials/MXene hybrids [59] . In this case, monomer, catalyst, initiator, solvent, etc.…”

Section: Methods For Preparation Of Organic Materials /Mxene Compositesmentioning

confidence: 99%

“…In situ growth method is generally suitable for the preparation of polymer materials/MXene hybrids. [59] In this case, monomer, catalyst, initiator, solvent, etc. are fully mixed with MXene, and then in situ polymerization reaction is carried out to form composite materials.…”

Section: In Situ Polymerizationmentioning

confidence: 99%

“…For example, anthraquinone-based COFs (AQ-COFs) were in situ constructed on the e surface of aminofunctionalized Ti 3 C 2 MXene nanosheets to form a series of COF@MXene heterostructure materials. [59] The authors discovered that the properties of COF@MXene heterostructure were in connection with the amounts of MXene. By adding 15 mg NH 2 -MXene during the synthesis, the obtained COF@MXene-15 heterostructure delivered the best electrochemical performances (a capacitance of 290 F g À 1 at 0.5 A g À 1 ) in 1.0 M Na 2 SO 4 .…”

Section: Organics/mxene Composites As Electrode Active Materials For ...mentioning

confidence: 99%

“…The in situ growth of COFs on MXene nanosheets is a proven method to overcome above shortcomings. For example, anthraquinone‐based COFs (AQ‐COFs) were in situ constructed on the e surface of amino‐functionalized Ti 3 C 2 MXene nanosheets to form a series of COF@MXene heterostructure materials [59] . The authors discovered that the properties of COF@MXene heterostructure were in connection with the amounts of MXene.…”

Section: Organics/mxene Composites As Electrode Active Materials For ...mentioning

confidence: 99%

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Organics‐MXene Composites as Electrode Materials for Energy Storage

Sun

Gao

et al. 2022

Batteries & Supercaps

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Batteries & Supercaps www.batteries-supercaps.org Review doi.org/10.1002/batt.202200402 development of organics/MXene-based composites and summarizes the various strategies for assembling or fabricating organics/MXene-based hybrid composites. Applications of these organics/MXene-based electrode materials in supercapacitors and batteries are also discussed in brief along with analysis of their excellent electrochemical performances and the charge storage mechanisms. Finally, some remaining challenging issues and future opportunities of organics/MXene composites as electrode materials for the high-power and low-cost rechargeable batteries or supercapacitors are also discussed.

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“…In situ growth method is generally suitable for the preparation of polymer materials/MXene hybrids [59] . In this case, monomer, catalyst, initiator, solvent, etc.…”

Section: Methods For Preparation Of Organic Materials /Mxene Compositesmentioning

confidence: 99%

Section: In Situ Polymerizationmentioning

confidence: 99%

Section: Organics/mxene Composites As Electrode Active Materials For ...mentioning

confidence: 99%

Section: Organics/mxene Composites As Electrode Active Materials For ...mentioning

confidence: 99%

See 2 more Smart Citations

Organics‐MXene Composites as Electrode Materials for Energy Storage

Sun

Gao

et al. 2022

Batteries & Supercaps

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show abstract

“…There are a wide variety of three-dimensional nanomaterials, which are usually low-dimensional nanomaterials that have been modified or combined to form three-dimensional composite nanomaterials such as nanowire arrays [ 121 ], hollow spheres [ 122 ], and frameworks [ 123 , 124 ]. Three-dimensional nanomaterials can effectively use the physical structure to expose more active sites and improve light absorption.…”

Section: Modification Of Znfe 2 O 4 ...mentioning

confidence: 99%

Progress in the Preparation and Modification of Zinc Ferrites Used for the Photocatalytic Degradation of Organic Pollutants

Zhu

Chen

et al. 2022

IJERPH

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Zinc ferrite is a type of photocatalytic material with high physicochemical stability, narrow band gap, high carrier separation efficiency, high porosity, and paramagnetism, which makes it easy to recover. Thus, zinc ferrite is widely used as a photocatalyst in water treatment. In this paper, the preparation principles as well as the advantages and disadvantages of typical methods used to prepare zinc ferrite including hydrothermal, co-precipitation, sol-gel, and other novel methods such as biosynthesis have been summarized. Modification methods such as elemental doping, composite formation, and morphological modification have been highlighted. Using these modification methods, the catalytic activity of zinc ferrite toward the photocatalytic degradation of organic pollutants in water has been enhanced. Biosynthesis is regarded as a promising preparation method that uses biological materials instead of chemical materials to achieve the large-scale preparation of zinc ferrite using low cost, energy efficient, and environmentally friendly processes. Meanwhile, the combination of multiple modification techniques to enhance the photocatalytic performance of zinc ferrite will be an important research trend in the future.

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Covalent Organic Frameworks for Capacitive Energy Storage: Recent Progress and Technological Challenges

Wang

Chen

et al. 2023

Adv Materials Technologies

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In principle, supercapacitors may store electrical energy through the electrical double-layer capacitance (EDLC), pseudocapacitance, or a mix of the above two. [3f ] EDLC stems from the electrostatically reversible electrolyte ion adsorption and desorption on electrode surfaces. [4] Therefore, electrodes with a large specific surface area and good electrical conductivity are essential to obtain a high EDLC. Carbon materials, such as activated carbon, [5] graphene, [6] and carbon nanotubes (CNTs), [7] are common EDLC materials due to their large specific surface area, high electrical conductivity, good cycling stability, and reasonably low cost. On the other hand, pseudocapacitance originates from rapid and reversible Faradaic reactions occurring on the surfaces of redox-active electrodes. [8] Common pseudocapacitive materials include transition metal oxides and conducting polymers. [9] Further, asymmetric hybrid capacitors combine electrodes with EDLC and pseudocapacitance to obtain broader operating potential windows and substantially higher energy density. [10] The properties of capacitive electrode materials govern the energy storage performance of supercapacitors. Extensive research efforts have been devoted to developing novel capacitive materials. These efforts have focused on two main strategies: 1) increasing the ion-accessible surface area of capacitive materials and 2) incorporating redox-active species to increase pseudocapacitance, achieving significant progress. For instance, a 3D graphene framework prepared by thermal decomposition exhibited a large specific surface area of 1018 m 2 g −1 and a high specific capacitance of 266 F g −1 at a current density of 0.5 A g −1 . [11] A nanoporous carbon sphere with an exceptional specific surface area of 3357 m 2 g −1 showed a specific capacitance of 405 F g −1 at 0.5 A g −1 . [12] Many studies have optimized the crystallinity, pore structure, and redox-active species of metal oxides/hydroxides and polymeric materials. [13] However, irregular pore structures, low electrical conductivity, uneven distribution of redox-active species in capacitive materials, and uncontrollable agglomeration of their nanoparticles often increase the mass transfer resistance of electrolyte ions and reduce their accessible surface areas, resulting in deteriorated energy storage performance. Further, metal dissolution and crystal structure transformation of metal oxides/hydroxides and fast degradation of polymeric materials also shorten the cycling life of supercapacitors fabricated using these materials. [14] Therefore, developing novel capacitive materials with Covalent-organic frameworks (COFs) are emerging organic crystalline materials with a porous framework that extends into two or three dimensions. Originating from their versatile and rigorous synthesis conditions, COFs have abundant and tunable pores, large and easily accessible surfaces, and plenty of redox-active sites, making them promising material candidates for various energy storage applications. One important area...

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Covalent‐Induced Heterostructure of Covalent‐Organic Frameworks and MXene as Advanced Electrodes with Motivated Pseudocapacitance Performance

Cited by 17 publications

References 70 publications

Organics‐MXene Composites as Electrode Materials for Energy Storage

Organics‐MXene Composites as Electrode Materials for Energy Storage

Progress in the Preparation and Modification of Zinc Ferrites Used for the Photocatalytic Degradation of Organic Pollutants

Covalent Organic Frameworks for Capacitive Energy Storage: Recent Progress and Technological Challenges

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