Metal–organic frameworks and their derivatives with graphene composites: preparation and applications in electrocatalysis and photocatalysis

Wang, Zixi; Huang, Jianying; Mao, Jiajun; Guo, Qi; Chen, Zhong; Lai, Yuekun

doi:10.1039/c9ta12776c

Cited by 186 publications

(76 citation statements)

References 194 publications

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“…Several research groups have devoted their efforts toward exploring various functionalized graphene-MOF hybrids for different applications based on their structure and property relationships. [15][16][17][18][19][20] The use of MOFs to prevent stacking layers of graphene and graphene derivatives such as highly fluorinated graphene oxide (GO) or reduced GO is well established in the literature. [21][22][23][24][25][26] Despite the absence of covalent bonds between the MOF and the graphene structure, many of their synergistic properties rely on the stability of the pi-pi, and hydrogen bonds between them, likely to limit the mechanical stability of the materials.…”

Section: Doi: 101002/adma202004560mentioning

confidence: 99%

Covalent Graphene‐MOF Hybrids for High‐Performance Asymmetric Supercapacitors

et al. 2020

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In this work, the covalent attachment of an amine functionalized metal‐organic framework (UiO‐66‐NH2 = Zr6O4(OH)4(bdc‐NH2)6; bdc‐NH2 = 2‐amino‐1,4‐benzenedicarboxylate) (UiO‐Universitetet i Oslo) to the basal‐plane of carboxylate functionalized graphene (graphene acid = GA) via amide bonds is reported. The resultant GA@UiO‐66‐NH2 hybrid displayed a large specific surface area, hierarchical pores and an interconnected conductive network. The electrochemical characterizations demonstrated that the hybrid GA@UiO‐66‐NH2 acts as an effective charge storing material with a capacitance of up to 651 F g−1, significantly higher than traditional graphene‐based materials. The results suggest that the amide linkage plays a key role in the formation of a π‐conjugated structure, which facilitates charge transfer and consequently offers good capacitance and cycling stability. Furthermore, to realize the practical feasibility, an asymmetric supercapacitor using a GA@UiO‐66‐NH2 positive electrode with Ti3C2TX MXene as the opposing electrode has been constructed. The cell is able to deliver a power density of up to 16 kW kg−1 and an energy density of up to 73 Wh kg−1, which are comparable to several commercial devices such as Pb‐acid and Ni/MH batteries. Under an intermediate level of loading, the device retained 88% of its initial capacitance after 10 000 cycles.

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Section: Doi: 101002/adma202004560mentioning

confidence: 99%

Covalent Graphene‐MOF Hybrids for High‐Performance Asymmetric Supercapacitors

et al. 2020

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“…In addition, 1D substrates made from carbon bers/nanotubes, metal oxide nanobers/tubes and polyacrylonitrile have the advantages of a controllable chemical composition, large specic surface area, high porosity, and excellent mechanical strength, which can improve mass transport in the catalysts and stability of the catalysts. 147,148 Moreover, by designing MOF composites, the amount of MOF in the precursors could be reduced, which is benecial for decreasing the cost of the electrocatalysts due to the high cost of MOFs.…”

Section: Bifunctional Electrocatalysts Derived From Mof Compositesmentioning

confidence: 99%

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Cui

Yin

et al. 2020

Chem. Sci.

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“…The basic novelty in designing an electrocatalyst lies in developing unique architecture and active surface sites which play an important role in enhancing the electron transfers ability of the catalyst. The electrocatalyst can be of different forms, like that of a photoelectrocatalyst, a solution phase electrocatalyst, surface electrocatalyst, and many others [60][61][62][63][64]. Such electrocatalysts should be cheap, stable, selective and abundant enough to be used in large scale applications.…”

Section: Brief Background Of Electrocatalysis: Her Oer Hor and Orrmentioning

confidence: 99%

Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review

Verma

Sinha-Ray

2020

Polymers

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With the per capita growth of energy demand, there is a significant need for alternative and sustainable energy resources. Efficient electrochemical catalysis will play an important role in sustaining that need, and nanomaterials will play a crucial role, owing to their high surface area to volume ratio. Electrospun nanofiber is one of the most promising alternatives for producing such nanostructures. A section of key nano-electrocatalysts comprise of transition metals (TMs) and their derivatives, like oxides, sulfides, phosphides and carbides, etc., as well as their 1D composites with carbonaceous elements, like carbon nanotubes (CNTs) and carbon nanofiber (CNF), to utilize the fruits of TMs’ electronic structure, their inherent catalytic capability and the carbon counterparts’ stability, and electrical conductivity. In this work, we will discuss about such TM derivatives, mostly TM-based ceramics, grown on the CNF substrates via electrospinning. We will discuss about manufacturing methods, and their electrochemical catalysis performances in regards to energy conversion processes, dealing mostly with water splitting, the metal–air battery fuel cell, etc. This review will help to understand the recent evolution, challenges and future scopes related to electrospun transition metal derivative-based CNFs as electrocatalysts.

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Metal–organic frameworks and their derivatives with graphene composites: preparation and applications in electrocatalysis and photocatalysis

Abstract: This review systematically summarizes the preparation strategies of metal–organic frameworks and their derivatives with graphene composites for promising applications in electrocatalysis and photocatalysis.

Cited by 186 publications

References 194 publications

Covalent Graphene‐MOF Hybrids for High‐Performance Asymmetric Supercapacitors

Covalent Graphene‐MOF Hybrids for High‐Performance Asymmetric Supercapacitors

Metal–organic framework based bifunctional oxygen electrocatalysts for rechargeable zinc–air batteries: current progress and prospects

Electrospun CNF Supported Ceramics as Electrochemical Catalysts for Water Splitting and Fuel Cell: A Review

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