Mechanically Shaped Two-Dimensional Covalent Organic Frameworks Reveal Crystallographic Alignment and Fast Li-Ion Conductivity

Vazquez-Molina, Demetrius; Mohammad-Pour, Gavin S.; Lee, Chain; Logan, Matthew W.; Duan, Xiangfeng; Harper, James K.; Uribe‐Romo, Fernando J.

doi:10.1021/jacs.6b05568

Cited by 244 publications

(245 citation statements)

References 41 publications

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“…The detailed procedure of iodine doping can be found in the Supporting Information. The values obtained herein are among some of the highest values reported in COFs to date . In addition, these conductivity studies are the first reports for COFs with covalently bound TCNQ moieties.…”

Section: Resultssupporting

confidence: 56%

“…Herein, we demonstrate that the donor–acceptor alignment in well‐defined frameworks could drastically affect the electronic properties of the materials, resulting in circa 100 000 000‐fold conductivity enhancement, one of the largest increases reported for COFs . We probed charge transfer rates within the Marcus theory as a function of acceptor stacking.…”

Section: Introductionmentioning

confidence: 97%

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A Dual Threat: Redox‐Activity and Electronic Structures of Well‐Defined Donor–Acceptor Fulleretic Covalent‐Organic Materials

et al. 2020

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The effect of donor (D)–acceptor (A) alignment on the materials electronic structure was probed for the first time using novel purely organic porous crystalline materials with covalently bound two‐ and three‐dimensional acceptors. The first studies towards estimation of charge transfer rates as a function of acceptor stacking are in line with the experimentally observed drastic, eight‐fold conductivity enhancement. The first evaluation of redox behavior of buckyball‐ or tetracyanoquinodimethane‐integrated crystalline was conducted. In parallel with tailoring the D‐A alignment responsible for “static” changes in materials properties, an external stimulus was applied for “dynamic” control of the electronic profiles. Overall, the presented D–A strategic design, with stimuli‐controlled electronic behavior, redox activity, and modularity could be used as a blueprint for the development of electroactive and conductive multidimensional and multifunctional crystalline porous materials.

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Section: Resultssupporting

confidence: 56%

Section: Introductionmentioning

confidence: 97%

A Dual Threat: Redox‐Activity and Electronic Structures of Well‐Defined Donor–Acceptor Fulleretic Covalent‐Organic Materials

et al. 2020

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“…Finally,ahigh ambient ionic conductivity up to % 10 À3 Scm À1 have been achieved with activation energy below 0.21 eV.S ymmetric Li/ HSSE/Li cell delivers as table overpotential around2 0-30 mV up to 1200 h, suggesting high compatibilityw ith lithium metal anode (Figure 6f). [68] These highly aligned2 DC OFs are impregnated with LiClO 4 ,w hich exhibit room temperature ionic conductivity up to 2.6 10 À4 Scm À1 and enhanced electrochemicals tabilities,i mplying their use as HSSEs for lithium batteries. Very recently,B ai and coworkers revealed the "cage"e ffect of MOF by DFT-molecular dynamics simulation.…”

Section: Open-framework-liquid Hssesmentioning

confidence: 99%

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Liu

et al. 2018

Chemistry A European J

135

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Conventional liquid electrolytes for lithium batteries usually suffer from irreversible decomposition and safety concerns. Solid state electrolytes (SSEs) have been considered as the key for advanced lithium batteries with improved energy density and safety, whereas challenges remain for polymer and inorganic SSEs. Recently, hybrid solid-state electrolytes (HSSEs) that integrate the merits of different electrolyte systems have been under intensive study. Herein, we summarize the recent progress of HSSEs with different compositions and structures. The design principle of each type of HSSEs are discussed, as well as their ionic conducting mechanism, electrochemical performance and effects of compositional/structural control. Finally, challenges and perspectives are provided for the future development of HSSEs and solid-state lithium batteries.

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“…

nanomaterials have been discovered and extensively studied, such as metal oxides, [9] transition-metal dichalcogenides (TMDs), [10][11][12] layered double hydroxides (LDHs), [13,14] 2D covalent organic frameworks (COFs), [15,16] 2D metal-organic frameworks (MOFs), [17,18] silicene, [19] germanene, [20,21] black phosphorene, [22][23][24] arsenene, [25][26][27][28] stanene, [29] borophene, [30,31] carbon nitride, [32,33] hexagonal boron nitride, [34][35][36] and Mxene, [37][38][39] etc. As an emerging class of nanoscale materials, 2D nanomaterials show unprecedented properties that are unparalleled compared to their corresponding bulk materials, which gives these materials promising applications in a wide range of areas, including high-speed electronic and optical devices, actuators and sensors, energy conversion and storage devices, DNA sequencing, and so on.

…”

mentioning

confidence: 99%

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

et al. 2017

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The exponential increase in research focused on two-dimensional (2D) metal oxides has offered an unprecedented opportunity for their use in energy conversion and storage devices, especially for promising next-generation rechargeable batteries, such as lithium-ion batteries (LIBs) and sodium-ion batteries (NIBs), as well as some post-lithium batteries, including lithium-sulfur batteries, lithium-air batteries, etc. The introduction of well-designed 2D metal oxide nanomaterials into next-generation rechargeable batteries has significantly enhanced the performance of these energy-storage devices by providing higher chemically active interfaces, shortened ion-diffusion lengths, and improved in-plane carrier-/charge-transport kinetics, which have greatly promoted the development of nanotechnology and the practical application of rechargeable batteries. Here, the recent progress in the application of 2D metal oxide nanomaterials in a series of rechargeable LIBs, NIBs, and other post lithium-ion batteries is reviewed relatively comprehensively. Current opportunities and future challenges for the application of 2D nanomaterials in energy-storage devices to achieve high energy density, high power density, stable cyclability, etc. are summarized and outlined. It is believed that the integration of 2D metal oxide nanomaterials in these clean energy devices offers great opportunities to address challenges driven by increasing global energy demands.

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Mechanically Shaped Two-Dimensional Covalent Organic Frameworks Reveal Crystallographic Alignment and Fast Li-Ion Conductivity

Cited by 244 publications

References 41 publications

A Dual Threat: Redox‐Activity and Electronic Structures of Well‐Defined Donor–Acceptor Fulleretic Covalent‐Organic Materials

A Dual Threat: Redox‐Activity and Electronic Structures of Well‐Defined Donor–Acceptor Fulleretic Covalent‐Organic Materials

Recent Progress of Hybrid Solid‐State Electrolytes for Lithium Batteries

Two‐Dimensional Metal Oxide Nanomaterials for Next‐Generation Rechargeable Batteries

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