Roadmap of amorphous metal-organic framework for electrochemical energy conversion and storage

Wang, Hang; Yang, Qi; Zheng, Nan; Zhai, Xingwu; Xu, Tao; Sun, Zhonghua; Wu, Liang; Zhou, Min

doi:10.1007/s12274-022-5114-8

Cited by 17 publications

(11 citation statements)

References 94 publications

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“…Importantly, aperiodic arrangements of atoms produce large humps in their PXRD patterns, suggesting that there is no long-range order within the structure . Despite this, within nanodomains, there may still exist short-range order that maintains some degree of crystallinity as PXRD crystalline material detection threshold falls within the range of approximately 1 to 5% by volume .…”

Section: Resultsmentioning

confidence: 99%

Amorphization of Coordinately Saturated Metal–Organic Frameworks as Electrocatalysts for Superior Seawater Splitting

Sharma,

Gnanasekar,

Ahmad

et al. 2024

Chem. Mater.

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Amorphous metal−organic frameworks (aMOFs) are emerging as complementary alternatives to crystalline MOFs (cMOFs) in several electrochemical energy applications; however, their preparation typically involves harsh conditions and intricate compositions and structures. In this work, we synthesized coordinately saturated crystalline metal−organic frameworks, known as Ni-cMOF and NiCo-cMOFn (n = 1, 2, 3, and 4), which were successfully amorphized under physical force and alkaline conditions. Interestingly, the amorphized samples maintained the compositional integrity of the parent crystalline framework and exhibited nanocrystalline characteristics at the nanodomain scale. These cMOFs possess a coordinately saturated and exposed 2D sheet-like architecture of secondary building unit Ni 3 (μ 3 -O) which bestowed them with excellent catalytic properties. Real-time overall seawater splitting was conducted using the amorphized samples (aMOFs) and showed an excellent performance with oxygen selectivity and stability over 24 h at 340 mA, which is the highest compared to other amorphous MOF-based systems and the first using seawater to the best of our knowledge. We envision that this direct amorphization approach will enable the production of a new generation of amorphous MOFs as effective materials for electrocatalytic applications.

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Section: Resultsmentioning

confidence: 99%

Amorphization of Coordinately Saturated Metal–Organic Frameworks as Electrocatalysts for Superior Seawater Splitting

Sharma,

Gnanasekar,

Ahmad

et al. 2024

Chem. Mater.

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“…[Fe 4 (Fe(CN) 6 ) 3 ] microcubes were synthesized by a hydrothermal method and used as self-sacrificing templates to prepare uniform MgFe 2 O 4 microboxes (Figs. 3(d) and 3(e)) [45] . The MgFe 2 O 4 microbox shell consisted of microcrystals with an average size of about 24 nm.…”

Section: Alkaline Earth Metal Ferritesmentioning

confidence: 99%

Research progress of alkaline earth metal iron-based oxides as anodes for lithium-ion batteries

Ye,

Hao,

Zeng

et al. 2024

J. Semicond.

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Anode materials are an essential part of lithium-ion batteries (LIBs), which determine the performance and safety of LIBs. Currently, graphite, as the anode material of commercial LIBs, is limited by its low theoretical capacity of 372 mA·h·g−1, thus hindering further development toward high-capacity and large-scale applications. Alkaline earth metal iron-based oxides are considered a promising candidate to replace graphite because of their low preparation cost, good thermal stability, superior stability, and high electrochemical performance. Nonetheless, many issues and challenges remain to be addressed. Herein, we systematically summarize the research progress of alkaline earth metal iron-based oxides as LIB anodes. Meanwhile, the material and structural properties, synthesis methods, electrochemical reaction mechanisms, and improvement strategies are introduced. Finally, existing challenges and future research directions are discussed to accelerate their practical application in commercial LIBs.

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“…Converting into electrical energy, which can be stored by electrochemical energy storage devices, is one of the most feasible approaches to efficiently utilize clean renewable energy. [1][2][3][4][5][6][7] Since the commercialization by the Sony Corporation in 1991, lithium-ion batteries (LIBs) have gradually dominated the global electrochemical energy storage market owing to their features of long-term cycle life and high energy densities. In recent years, electric vehicles powered by LIBs have made great strides and replaced traditional fuel vehicles to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cathode materials for calcium‐ion batteries: Current status and prospects

Wu,

Zhao,

Hao

et al. 2023

Carbon Neutralization

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In the post‐lithium‐ion battery era, calcium‐ion batteries (CIBs) have aroused extensive attention because of their strong cost competitiveness, low standard redox potentials, and high safety. However, the related research is progressing slowly due to the constraints of the development of electrode materials. The large ionic radius of Ca2+ especially increases the challenge to design cathode materials for reversible Ca2+ uptake/removal. Despite the inspiring achievements, various challenges still need to be further resolved. Here, this review systematically summarizes the recent advances in CIB cathode materials, including Prussian blue and its analogues, metal oxides, metal chalcogenides, polyanionic compounds, and organic materials. We first provide a brief introduction to CIBs and compare their advantages with other battery technologies. Then, preparation methods are introduced, and breakthrough investigations are highlighted. Finally, some possible research directions are discussed to promote the development of this emerging battery technology.

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Roadmap of amorphous metal-organic framework for electrochemical energy conversion and storage

Cited by 17 publications

References 94 publications

Amorphization of Coordinately Saturated Metal–Organic Frameworks as Electrocatalysts for Superior Seawater Splitting

Amorphization of Coordinately Saturated Metal–Organic Frameworks as Electrocatalysts for Superior Seawater Splitting

Research progress of alkaline earth metal iron-based oxides as anodes for lithium-ion batteries

Cathode materials for calcium‐ion batteries: Current status and prospects

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