Regulation of Outer Solvation Shell Toward Superior Low‐Temperature Aqueous Zinc‐Ion Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(49)

Published: Sept. 30, 2022

Abstract Aqueous Zn‐ion batteries are well regarded among a next‐generation energy‐storage technology due to their low cost and high safety. However, the unstable stripping/plating process leading severe dendrite growth under current density temperature impede practical application. Herein, it is demonstrated that addition of 2‐propanol can regulate outer solvation shell structure Zn 2+ by replacing water molecules establish “eutectic shell”, which provides strong affinity with (101) crystalline plane fast desolvation kinetics during plating process, rendering homogeneous deposition without formation. As result, anode exhibits promising cycle stability over 500 h an elevated 15 mA cm −2 depth discharge 51.2%. Furthermore, remarkable electrochemical performance achieved in 150 mAh Zn|V 2 O 5 pouch cell 1000 cycles at −20 °C. This work not only offers new strategy achieve excellent aqueous harsh conditions, but also reveals electrolyte designs be applied related energy storage conversion fields.

Language: Английский

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In Situ Growth of Covalent Organic Framework Nanosheets on Graphene as the Cathode for Long‐Life High‐Capacity Lithium‐Ion Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(37)

Published: July 29, 2022

The poor electronic and ionic conductivities of covalent organic frameworks (COFs) severely restrict the development COF-based electrodes for practical rechargeable batteries, therefore inspiring more research interest from direction both material synthesis technology. Herein, a dual-porous COF, USTB-6, with good crystallinity rich redox-active sites is conceived fabricated by polymerization 2,3,8,9,14,15-hexa(4-formylphenyl)diquinoxalino [2,3-a:2',3'-c]phenazine 2,7-diaminopyrene-4,5,9,10-tetraone. In particular, heterogeneous same starting materials in presence graphene affords uniformly dispersed COF nanosheets thickness 8.3 nm on conductive carbon substrate, effectively enhancing conductivity electrode. Such graphene-supported USTB-6 cathode when used lithium-ion battery exhibits specific capacity 285 mA h g-1 at current density 0.2 C excellent rate performance prominent 188 10 C. More importantly, 170 retained using after 6000 cycles charge discharge measurement 5

Language: Английский

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Porous organic polymers (POPs) for environmental remediation

Materials Horizons, Journal Year: 2023, Volume and Issue: 10(10), P. 4083 - 4138

Published: Jan. 1, 2023

Porous organic polymers show great potential for addressing environmental pollution challenges, including chemical sensing, wastewater treatment, toxic gas sorption, heterogeneous catalysis, and further promoting sustainable remediation strategies.

Language: Английский

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Construction of Crystalline Nitrone-Linked Covalent Organic Frameworks Via Kröhnke Oxidation

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(28), P. 15465 - 15472

Published: July 7, 2023

Developing diverse synthetic routes to prepare various crystalline covalent organic frameworks (COFs) and enrich the family of COFs is very important highly desirable. In this research, we demonstrate that Kröhnke oxidation (originally developed carbonyl compounds) can be employed as an efficient method construct two nitrone-linked (CityU-1 CityU-2) through ingenious design polynitroso-containing precursors well exquisite control polymerization conditions. The formation structure nitrone-based linkage units have been confirmed a mode reaction. as-obtained characterized by Fourier transform infrared X-ray photoelectron spectroscopy, powder diffraction patterns, scanning electron microscopy. Notably, CityU-1 exhibits BET specific surface area 497.9 m2g-1 with I2 capture capacity 3.0 g g-1 at 75 °C. Our research would provide more chances for applications.

Language: Английский

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Covalent triazine frameworks for advanced energy storage: challenges and new opportunities

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(8), P. 3181 - 3213

Published: Jan. 1, 2023

This Review provides a comprehensive overview of recent advancements in CTF materials and CTF-based batteries. The aims to make batteries viable for next-generation high-energy battery systems.

Language: Английский

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Porous organic polymers with defined morphologies: Synthesis, assembly, and emerging applications

Progress in Polymer Science, Journal Year: 2023, Volume and Issue: 142, P. 101691 - 101691

Published: May 6, 2023

Language: Английский

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Rechargeable Metal-Sulfur Batteries: Key Materials to Mechanisms

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(8), P. 4935 - 5118

Published: April 10, 2024

Rechargeable metal-sulfur batteries are considered promising candidates for energy storage due to their high density along with natural abundance and low cost of raw materials. However, they could not yet be practically implemented several key challenges: (i) poor conductivity sulfur the discharge product metal sulfide, causing sluggish redox kinetics, (ii) polysulfide shuttling, (iii) parasitic side reactions between electrolyte anode. To overcome these obstacles, numerous strategies have been explored, including modifications cathode, anode, electrolyte, binder. In this review, fundamental principles challenges first discussed. Second, latest research on is presented discussed, covering material design, synthesis methods, electrochemical performances. Third, emerging advanced characterization techniques that reveal working mechanisms highlighted. Finally, possible future directions practical applications This comprehensive review aims provide experimental theoretical guidance designing understanding intricacies batteries; thus, it can illuminate pathways progressing high-energy-density battery systems.

Language: Английский

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Reversible Metal and Ligand Redox Chemistry in Two-Dimensional Iron–Organic Framework for Sustainable Lithium-Ion Batteries

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(3), P. 1564 - 1571

Published: Jan. 13, 2023

Metal-organic frameworks (MOFs) are emerging as attractive electrode materials for lithium-ion batteries, owing to their fascinating features of sustainable resources, tunable chemical components, flexible molecular skeletons, and renewability. However, they faced with a limited number redox-active sites unstable during electrochemical processes. Herein, we design novel two-dimensional (2D) iron(III)-tetraamino-benzoquinone (Fe-TABQ) dual redox centers Fe cations TABQ ligands high-capacity stable lithium storage. It is constructed square-planar Fe-N2O2 linkages phenylenediamine building blocks, between which the Fe-TABQ chains connected by multiple hydrogen bonds, then featured an extended π-d-conjugated 2D structure. The chemistry both Fe3+ anions revealed render its remarkable specific capacity 251.1 mAh g-1. Benefiting from intrinsic robust Fe-N(O) bonds reinforced Li-N(O) cycling, delivers high retentions over 95% after 200 cycles at various current densities. This work will enlighten more investigations designs advanced MOF-based materials.

Language: Английский

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A Thiazole‐linked Covalent Organic Framework for Lithium‐Sulphur Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(32)

Published: May 17, 2023

Lithium-sulphur (Li-S) batteries are a promising alternative power source, as they can provide higher energy density than current lithium-ion batteries. Porous materials often used cathode act host for sulphur in such Recently, covalent organic frameworks (COFs) have also been used, however typically suffer from stability issues, resulting limited and thus insufficient durability under practical conditions applications. Herein, we report the synthesis of crystalline porous imine-linked triazine-based dimethoxybenzo-dithiophene functionalized COF (TTT-DMTD) incorporating high-density redox sites. The imine linkages were further post-synthetically transformed to yield robust thiazole-linked (THZ-DMTD) by utilizing sulphur-assisted chemical conversion method, while maintaining crystallinity. As synergistic effect its high crystallinity, porosity presence redox-active moieties, THZ-DMTD exhibited capacity long-term (642 mAh g-1 at 1.0 C; 78.9 % retention after 200 cycles) when applied material Li-S battery.

Language: Английский

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Tailoring Vertically Aligned Inorganic‐Polymer Nanocomposites with Abundant Lewis Acid Sites for Ultra‐Stable Solid‐State Lithium Metal Batteries

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(13)

Published: Feb. 24, 2023

Abstract Nanocomposite solid polymer electrolytes are considered as a promising strategy for solid‐state lithium metal batteries (SSLMBs). However, the randomly dispersed fillers in matrix with limited Li + transference number and insufficient ionic conductivity severely sacrifice ion transport capacity, thus restricting their practical application. To tackle these issues, magnetic field‐assisted alignment is proposed to disperse vertically aligned akaganéite nanotube an inorganic‐polymer nanocomposite electrolyte ultra‐stable SSLMBs. The cations Lewis acid sites can grab anions promote dissociation of salts while sufficient oxygen hydroxyl functional group offer abundant Li‐ion migration favored transportation. At same time, akaganéite/polymer interface combined above synergistic effects establish oriented channels inside electrolyte, which significantly elevates its conductivity. Specially, organic‐inorganic dual‐layer solid‐electrolyte formed uniform deposition suppress dendrite growth. beneficial effect network also demonstrated full cell pouch where remarkable 2000 cycles capacity decay 0.012% per cycle be achieved.

Language: Английский

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