Conductive metal-organic frameworks for electrochemical energy conversion and storage

Zhu, Bingjun; Wen, Dongsheng; Liang, Zibin; Zou, Ruqiang

doi:10.1016/j.ccr.2021.214119

Cited by 82 publications

(45 citation statements)

References 145 publications

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“…The metal-organic framework (MOF) has been demonstrated to have great advantages in electrocatalysis due to its structural specificality, uniformity, and designability. − It has been found that MOFs can be usually functioned as “precatalysts” in many recent reports, dependent on the competition coordination and redox of ligands or metal ions. − For example, a two-dimensional (2D) Bi-based MOF (Bi 3+ ) can be reduced into an atomically thin bismuthene (Bi 0 ), serving as the active phase during the CO 2 reduction reaction (CO 2 RR) . Wu et al reported that copper–porphyrin MOF nanosheets underwent a self-reconstruction of forming CuO, Cu 2 O, and Cu 4 O 3 under the electrocatalytic condition of CO 2 RR .…”

Section: Introductionmentioning

confidence: 99%

In Situ Clustering of Single-Atom Copper Precatalysts in a Metal-Organic Framework for Efficient Electrocatalytic Nitrate-to-Ammonia Reduction

Xie

Zhong

et al. 2022

ACS Catal.

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When serving as a “precatalyst”, metal-organic frameworks (MOF) usually incur uncontrollable framework collapse in electrocatalysis. Herein, we report an anticollapse MOF-supported single-atom Cu precatalyst for electrocatalytic nitrate-to-ammonia reduction reaction (NARR), which can be applied in the rechargeable ammonia energy storage (RAES) technology. In situ X-ray absorption spectroscopy (XAS) revealed the association of the formation of real catalytic sites with the in situ clustering of single-atom Cu during NARR. Notably, the noncollapse MOF can afford the confined space to prevent the excessive aggregation of Cu atoms, leading to uniform ultrasmall nanoclusters (ca. 4 nm). Moreover, it achieves a maximal Faradaic efficiency toward NH3 of 85.5%, a formation rate of NH3 of 66 μmol h–1 cm–2, and a specific activity of 53.43 mgNH3 h–1 mgCu –1 in 5 mM NO3 – solution. The specific activity is found to be at least 3.3 times higher than that of other reported Cu-based catalysts. Density function theory (DFT) calculation further confirms the size effect and the host–guest interaction in facilitating the NO3 – activation and the reaction energy decrease. Besides, it also exhibits a high selectivity of ammonia-to-nitrate of 93.3%, displaying great potential in RAES technology.

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Section: Introductionmentioning

confidence: 99%

In Situ Clustering of Single-Atom Copper Precatalysts in a Metal-Organic Framework for Efficient Electrocatalytic Nitrate-to-Ammonia Reduction

Xie

Zhong

et al. 2022

ACS Catal.

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“…1 In recent years, metal-organic frameworks (MOFs), characterised by their combined high intrinsic porosities and electrical conductivities, have emerged as one of the most promising electrode materials for next-generation energy storage devices. [2][3][4][5][6][7][8][9][10] Several such MOFs have displayed encouraging performances in supercapacitors with a wide range of electrolytes, exhibiting specic and areal capacitances on par with or exceeding those of state-of-the-art commercial carbon materials. [11][12][13][14][15][16] This has raised the prospect of using MOFs in commercial devices, and their well-dened structures make them promising model electrode materials for structure-performance studies.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the energy storage performances of metal–organic frameworks by controlling microstructure

et al. 2022

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“…Interestingly, the specific surface area of MC-BTC@C is considerably lower than that of common MOFs. 42,43 Actually, MOFs possessing an excessive specific surface area are significantly prone to triggering side reactions, which is detrimental to Li storage. 44,45 The pore size distribution shown in Figure 5c,d is calculated by the Barrett− Joyner−Halenda method.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Construction of MnCo-BTC@C Microspheres by Annealing a Bimetal–Organic Framework with Enhanced Lithium Storage

Zheng

Fang

et al. 2022

Energy Fuels

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Because of their changeable structure and diversity of morphology, metal–organic frameworks (MOFs) have sparked great interest as anodes for Li-ion batteries (LIBs). However, the poor electrical conductivity of MOFs has limited their application in LIBs. Herein, a carbon-coated microspheric MnCo-BTC (MC-BTC@C) with a diameter of approximately 1.4 μm has been prepared by annealing a bimetal–organic framework. The MC-BTC@C microsphere anode retains a high capacity of 1176.4 mAh g–1 at 200 mA g–1 after 100 cycles and exhibits a good rate performance (315 mAh g–1 at 4000 mA g–1). Notably, a high capacity of 654 mAh g–1 is maintained after 300 cycles at 1000 mA g–1. In addition, electrochemical impedance spectroscopy (EIS) has been applied to investigate the electrochemical behavior of MC-BTC@C and MC-BTC, revealing that the MC-BTC@C microsphere shows faster Li+ transport kinetics. Consequently, this research provides a new avenue for the ingenious design of MOFs with carbon coating for the LIB anode.

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Conductive metal-organic frameworks for electrochemical energy conversion and storage

Cited by 82 publications

References 145 publications

In Situ Clustering of Single-Atom Copper Precatalysts in a Metal-Organic Framework for Efficient Electrocatalytic Nitrate-to-Ammonia Reduction

In Situ Clustering of Single-Atom Copper Precatalysts in a Metal-Organic Framework for Efficient Electrocatalytic Nitrate-to-Ammonia Reduction

Enhancing the energy storage performances of metal–organic frameworks by controlling microstructure

Construction of MnCo-BTC@C Microspheres by Annealing a Bimetal–Organic Framework with Enhanced Lithium Storage

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