Post‐Synthetic Modification of Metal–Organic Frameworks Toward Applications

Mandal, Sukhendu; Natarajan, Srinivasan; Mani, Prabu; Pankajakshan, Asha

doi:10.1002/adfm.202006291

Cited by 343 publications

(228 citation statements)

References 155 publications

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“…To expand the scope and versatility of functional groups, the guest molecules in MOFs can be changed. [47] The Figure 4. a) Chemical structure of organic links used in the synthesis of a series of IRMOFs.…”

Section: Tailored Pore Environmentmentioning

confidence: 99%

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Sun

Fan

et al. 2021

Advanced Energy Materials

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lithium-ion batteries (LIBs) have proven an unprecedented success in portable electronics, electric vehicles, grid storage, etc., which make a great difference in our lives. Hence, the 2019 Nobel Prize in Chemistry was awarded to John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino for their revolutionary work in the field of LIBs. [1] The current LIBs technology is based on insertion-compound anode and cathode materials. As shown in Figure 1, the capacities of the insertion-oxide cathodes have reached the limit of ≈250 mAh g −1 , and that of the graphite anode is also limited to ≈370 mAh g −1 . However, the limited capacities are unable to satisfy the ever-growing need for gravimetric and volumetric energy density. It is required topic to develop next generation energy technology. Targeting the goal, researchers have their sights set on alternative electrode materials. On the anode side, based on conversion reactions while accommodating more ions and electrons are becoming promising options. [2] Approaching mature silicon/ carbon anode elevates anode capacity well. [3] And lithium metal anode are also booming. [4] On the cathode side, multi-electron conversion reaction represented by sulfur and oxygen electrode can offer capacities exceed that of conventional insertion cathodes, such as, LiCoO 2 and LiMn 2 O 4 , by an order of magnitude (>1500 mAh g −1 ). Since 2009, lithium-sulfur (Li-S) batteries have received increasing attention and are considered as one of the most promising candidates for next-generation rechargeable batteries after the development of high-performance Li-S batteries by CMK-3 as host. [5] Sulfur, as one of the most abundant elements on earth, is an electrochemically active material that can accept two electrons per atom at ≈2.1 V (vs. Li + /Li). [6] As a result, sulfur cathode materials have high theoretical capacity of 1675 mAh g −1 , and Li-S batteries have theoretical energy density of ≈2600 Wh kg −1 . [7] However, the issues including low conductivity of S and Li 2 S, shuttle effect, large volumetric expansion, and unstable lithium metal anode have to face. [8] Up to now, intensive efforts in component regulation and structure engineering electrode materials have been focused on solving these issues.Sulfur cathodes with high sulfur content (>90 wt%), [9] excellent cycling life (>3000 cycles), [10] as well as, high operating Lithium-sulfur (Li-S) batteries, with high theoretical energy density, promise to be the optimal candidate of next-generation energy-storage. Rapid development in materials has made a major step forward in Li-S batteries. However, a big gap in cycle life and efficiency for practical applications still remains. Reasonable design of materials/electrodes a is significant aspect that must be addressed. The rising metal-organic frameworks (MOFs) are a new class of crystalline porous organic-inorganic hybrid materials. Abundant inorganic nodes and designable organic linkers allow tailored pore chemistry at a molecular-scale, which enables tunable interaction w...

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Section: Tailored Pore Environmentmentioning

confidence: 99%

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Sun

Fan

et al. 2021

Advanced Energy Materials

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“…22,23 Encouragingly, many efforts have been made to address these issues. Typically, three strategies have been developed, including designing conductive MOFs by using metal ions and organic ligands with loosely bound electrons, 24 post-synthetic modication of MOFs by modifying the linker and/or metal node, and adsorption/exchange of guest species, 25,26 and constructing composites with MOFs and other materials, 17,27 such as MOF/ carbon hybrid materials, including MOF/carbon paper, 28 and MOF/carbon nanotubes. 29 Among them, the resultant MOF composites have become more prominent due to the synergic effects between the two components.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in metal–organic framework/graphene-derived materials for energy storage and conversion: design, preparation, and application

Wang

Hui

et al. 2021

Chem. Sci.

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“…Advanced families of NPMs, such as metal-organic frameworks (MOFs) [9], covalent organic frameworks (COFs) [10], porous polymer networks (PPNs) [11], porous organic cages (POCs) [12], and metal-organic polyhedra (MOPs) [13,14], are constructed modularly from molecular building blocks. The copiousness of building blocks, together with post-synthetic modifiability [15], make the number of possible NPM structures extremely large [16].…”

Section: Introductionmentioning

confidence: 99%

A Recommendation System to Predict Missing Adsorption Properties of Nanoporous Materials

Sturluson¹,

Raza²,

McConachie³

et al. 2021

Preprint

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Nanoporous materials (NPMs) selectively adsorb and concentrate gases into their pores, and thus could be used to store, capture, and sense many different gases. Modularly synthesized classes of NPMs, such as covalent organic frameworks (COFs), offer a large number of candidate structures for each adsorption task. A complete NPM-property table, containing measurements of the relevant adsorption properties in the candidate NPMs, would enable the matching of NPMs with adsorption tasks. However, in practice the NPM-property matrix is only partially observed (incomplete); (i) many properties of any given NPM have not been measured and (ii) any given property has not been measured for all NPMs.<br><br>The idea in this work is to leverage the observed (NPM, property) values to impute the missing ones. Similarly, commercial recommendation systems impute missing entries in an incomplete item-customer ratings matrix to recommend items to customers. We demonstrate a COF recommendation system to match COFs with adsorption tasks by training a low rank model of an incomplete COF--adsorption-property matrix. A low rank model, trained on the observed (COF, adsorption property) values, provides (i) predictions of the missing (COF, adsorption property) values and (ii) a "map" of COFs, wherein COFs with similar (dissimilar) adsorption properties congregate (separate). We find the performance of the COF recommendation system varies for different adsorption tasks and diminishes precipitously when the fraction of missing entries exceeds 60%. The concepts in our COF recommendation system can be applied broadly to many different materials and properties. <br>

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Post‐Synthetic Modification of Metal–Organic Frameworks Toward Applications

Cited by 343 publications

References 155 publications

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Tunable Interaction between Metal‐Organic Frameworks and Electroactive Components in Lithium–Sulfur Batteries: Status and Perspectives

Recent progress in metal–organic framework/graphene-derived materials for energy storage and conversion: design, preparation, and application

A Recommendation System to Predict Missing Adsorption Properties of Nanoporous Materials

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