Recent Progress in Using Covalent Organic Frameworks to Stabilize Metal Anodes for Highly‐Efficient Rechargeable Batteries

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(28)

Published: May 7, 2024

Alkali metals (e.g. Li, Na, and K) multivalent Zn, Mg, Ca, Al) have become star anodes for developing high-energy-density rechargeable batteries due to their high theoretical capacity excellent conductivity. However, the inevitable dendrites unstable interfaces of metal pose challenges safety stability batteries. To address these issues, covalent organic frameworks (COFs), as emerging materials, been widely investigated regular porous structure, flexible molecular design, specific surface area. In this minireview, we summarize research progress COFs in stabilizing anodes. First, present origins delve into advantages based on physical/chemical properties alkali metals. Then, special attention has paid application host design anodes, artificial solid electrolyte interfaces, additives, solid-state electrolytes, separator modifications. Finally, a new perspective is provided from pore modulation, synthesis COFs.

Language: Английский

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Two-Dimensional Covalent Organic Frameworks with Pentagonal Pores

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 19680 - 19685

Published: July 9, 2024

The pore shapes of two-dimensional covalent organic frameworks (2D COFs) significantly limit their practical applications in separation and catalysis. Although various 2D COFs with polygonal pores have been well developed, constructing pentagonal remains an enormous challenge. In this work, we developed one kind the

Language: Английский

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An Ultra-stable Sodium Dual-ion Battery Based on S/Se Co-doped Covalent Organic Framework Anode with 12,000 Cycles Under Lean Electrolyte

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104052 - 104052

Published: Jan. 1, 2025

Language: Английский

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Valence Electron: A Descriptor of Spinel Sulfides for Sulfur Reduction Catalysis

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Catalysts are essential for achieving high‐performance lithium–sulfur batteries. The precise design and regulation of catalytic sites to strengthen their efficiency robustness remains challenging. In this study, spinel sulfides catalyst principles through element doping investigated. This research highlights the distinct role lattice sulfur in lithium polysulfide conversion emphasizes differences activity between metal anion sites. valence electron model as a descriptor can characterize performance, guiding (FeCo) 3 (PS) 4 co‐doped with cation anion. exhibits highest performance among catalysts data, particularly under high loading conditions. It achieves an initial specific capacity 1205.9 mAh g −1 (6.1 cm −2 ) at 5 mg 1192.7 (11.9 10 , demonstrating excellent electrocatalytic performance.

Language: Английский

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Construction of metal–N3 sites in covalent organic frameworks for enhancing CO2 photoreduction

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125117 - 125117

Published: Feb. 1, 2025

Language: Английский

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Size Effect and Interfacial Synergy Enhancement of 2D Ultrathin Co_xZn_1−x‐MOF/rGO for Boosting Lithium–Sulfur Battery Performance

Small, Journal Year: 2025, Volume and Issue: 21(11)

Published: Feb. 3, 2025

Abstract Advanced cathode materials are developed to tackle the challenges of polysulfide shuttle effect and slow sulfur redox kinetics in Li–S batteries. A particularly effective strategy is creation nanostructured sulfur‐host, which boast high levels conductivity catalytic activity. Here, a series ultrathin cobalt–zinc bimetallic MOFs with varying ratios synthesized on rGO via one‐pot hydrothermal process. Furthermore, graphene's specific surface area enhances electrical structural integrity, thereby promoting growth 2D synergistically optimizing contact conversion kinetics. The Co x Zn 1‐x ‐MOF/rGO has disordered structure, resulting from fine‐tuned ratio cobalt zinc centers, generates active sites modulates electronic properties, enhancing LiPSs adsorption catalysis serve as hosts. Among composites, 0.75 0.25 demonstrated exceptional activity, capacity 649.69 mA h g −1 after 250th cycle an E/S 12.56 µL mg at 0.2 C. This work deepens insights into controlled design defective MOFs, modulating their structure‐activity correlations, expected facilitate integration carbonaceous advancing development

Language: Английский

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Seeding Co Atoms on Size Effect‐Enabled V₂C MXene for Kinetically Boosted Lithium–Sulfur Batteries

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 9, 2024

Abstract Lithium‐sulfur (Li–S) batteries are facing a multitude of challenges, mainly pertaining to the sluggish sulfur redox kinetics and rampant lithium dendrite growth on cathode anode side, respectively. In this sense, MXene has shown conspicuous advantages in serving as dual‐functional promotor for Li–S throughout morphologic engineering, but still suffers from poor electrocatalytic activity insufficient lithophilic sites. Herein, atomically dispersed Co sites seeded onto size effect‐enabled V 2 C spheres (Co‐VC), leading generation unique coordination configurations rich active Electrochemical tests combined with synchrotron radiation X‐ray 3D nano‐computed tomography theoretical calculations unravel that Co‐VC optimal environments simultaneously boost reaction nucleation. As consequence, modified separator can sustain stable operation over 700 cycles negligible capacity decay at 1.0 C, delivers an areal 9.0 mAh cm −2 desired cyclic performance high loading 7.6 mg lean electrolyte dosage 4.0 µL S −1 0.1 C. The work opens new avenue boosting atomic‐scale site design aid 2D substrates toward pragmatic batteries.

Language: Английский

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Recent Progress in Using Covalent Organic Frameworks to Stabilize Metal Anodes for Highly‐Efficient Rechargeable Batteries

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(28)

Published: May 7, 2024

Abstract Alkali metals (e.g. Li, Na, and K) multivalent Zn, Mg, Ca, Al) have become star anodes for developing high‐energy‐density rechargeable batteries due to their high theoretical capacity excellent conductivity. However, the inevitable dendrites unstable interfaces of metal pose challenges safety stability batteries. To address these issues, covalent organic frameworks (COFs), as emerging materials, been widely investigated regular porous structure, flexible molecular design, specific surface area. In this minireview, we summarize research progress COFs in stabilizing anodes. First, present origins delve into advantages based on physical/chemical properties alkali metals. Then, special attention has paid application host design anodes, artificial solid electrolyte interfaces, additives, solid‐state electrolytes, separator modifications. Finally, a new perspective is provided from pore modulation, synthesis COFs.

Language: Английский

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Recent progress in covalent organic framework-based nanomaterials for shuttle-inhibition and dendrite-free lithium–sulfur batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 93, P. 112374 - 112374

Published: June 4, 2024

Language: Английский

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Zwitterionic covalent organic framework as a multifunctional separators for high performance lithium-sulfur batteries

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 632, P. 236325 - 236325

Published: Jan. 27, 2025

Language: Английский

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