Recent advances in transition metal oxides as anode materials for high-performance lithium-ion capacitors

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154535 - 154535

Published: Aug. 3, 2024

Language: Английский

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Novel covalent organic framework/carbon nanotube composites with multiple redox-active sites for high-performance Na storage

Energy storage materials, Journal Year: 2023, Volume and Issue: 65, P. 103142 - 103142

Published: Dec. 17, 2023

Language: Английский

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Augmenting donor–acceptor covalent triazine frameworks for enhancing photocatalytic selective oxidation of sulfides

Applied Catalysis B Environment and Energy, Journal Year: 2025, Volume and Issue: unknown, P. 125147 - 125147

Published: Feb. 1, 2025

Language: Английский

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Multi-principles analysis of Cu(II) adsorption in water on magnetic microspheres and modified Chitosan

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(6), P. 111285 - 111285

Published: Oct. 20, 2023

Language: Английский

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Dendritic sp Carbon‐Conjugated Benzothiadiazole‐Based Polymers with Synergistic Multi‐Active Groups for High‐Performance Lithium Organic Batteries

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 22, 2023

Green organic materials composed of C, H, O, and N elements are receiving more attention worldwide. However, the high solubility, poor electrical conductivity, long activation time limit development in practice. Herein, two stable covalent with alkynyl linkage between benzene rings benzothiadiazole groups different amounts fluorine atoms modification (defined as BOP-0F BOP-2F), designed for lithium-ion batteries. Both BOP-2F can achieve superior reversible capacities ≈719.8 713.5 mAh g-1 over 100 cycles on account redox activity (two-electron involved) units (five-electron these materials. While electrodes exhibit much cycling performance than electrodes, especially without pronounced capacity ascending during initial cycling. It be assigned to synergy effect atom BOP-2F. The lithium storage mechanism alkynyl, benzothiadiazole, have also been deeply probed by a series material characterizations theoretical simulations. This work could noteworthy providing novel tactics molecular design investigation high-efficiency energy storage.

Language: Английский

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A novel 2D/2D MoS2/CeO2 nanohybrid and its lubricating mechanism in green rapeseed oil

Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 979, P. 173450 - 173450

Published: Jan. 9, 2024

Language: Английский

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Water-Mediated Hydrogen Bond Network Drives Highly Crystalline Structure Formation of Crown Ether-Based Covalent Organic Framework for Sr Adsorption

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(51), P. 59544 - 59551

Published: Dec. 13, 2023

Covalent organic frameworks (COFs) with crown ether units have drawn great attention due to their potential applications in adsorption, catalysis, and sensing. However, employing ethers construct COFs is still challenging light of the flexible nature macrocycles. Here, a highly crystalline one-dimensional covalent framework (1D-18C6-COF) on ribbon edge was synthesized. The water-mediated hydrogen bond network π-π stacking hold 1D COF ribbons together. combination experimental DFT studies demonstrated that plays crucial role structure crystallinity. 1D-18C6-COF applied as an adsorbent for strontium, it exhibited rapid kinetics good selectivity. In competitive adsorption experiment, separation factor 1900 achieved, representing one largest values cesium/strontium separation. This work provides new insights into design functional exploration units.

Language: Английский

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PBO fiber grafted rGO aerogel/BN/PBO composites with highly improved electromagnetic interference shielding effectiveness and through-plane thermal conductivity

Polymer Testing, Journal Year: 2023, Volume and Issue: 129, P. 108282 - 108282

Published: Nov. 19, 2023

With the advancement of electronic devices, generation heat and electromagnetic (EM) waves has increased. Therefore, it is essential to properly manage these EM waves, while ensuring flame retardancy mechanical properties materials used in devices. In this study, compensate for low thermal electrical conductivity Poly(p-phenylene-2,6-benzobisoxazole) (PBO), which was as matrix, reduced graphene oxide aerogel (rGOA) with high interference shielding effectiveness (EMI SE) performance boron nitride (BN) were selected fillers (rGOA/BN). To significantly improve compatibility filler PBO fiber grafted onto rGOA/BN filler. The fabricated composites exhibited 21.1 S/cm 4.81 W/m∙K, EMI SE tensile strength improved up 78.42 dB 201.8 MPa, respectively.

Language: Английский

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A DFT modeling of 4-cyclohexene-1,3-dione embedded in covalent triazine framework as a stable anode material for Li-ion batteries

Materials Chemistry and Physics, Journal Year: 2024, Volume and Issue: 322, P. 129592 - 129592

Published: June 10, 2024

Language: Английский

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A Novel Hierarchical Porous Covalent Organic Framework as Multi‐Active‐Center Anode for High‐Performance Sodium Ion Capacitors

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

Published: Oct. 10, 2024

Abstract Sodium‐ion capacitors (SICs) by virtue of synergizing the merits batteries and supercapacitors are promising in energy‐storage applications. However, they face significant challenges due to mismatch between sluggish Faradaic reaction anode swift non‐Faradaic cathode. Here, in‐situ growth a covalent organic framework (TA‐DH‐COF) with multiple active sites (C = O, C N, C) on graphene aerogels (GA) is reported synthesize novel TA‐DH‐COF/GA hierarchical pores for SICs. Benefiting from synergistic effect molecular design structural engineering, obtained possesses abundant accessible efficient ions electrons transport pathways. Combining theoretical calculations spectroscopic studies, it revealed that Na‐storage mechanism transportation kinetics based reversible Na + coordination through four‐stage process, featuring capacitive energy storage characteristics. When coupled an activated carbon (AC) cathode, TA‐DH‐COF/GA||AC SIC device displays ultrahigh energy/power densities (≈56 Wh kg −1 ≈10 000 W ) long‐term cyclic stability 88.8% capacity retention after 18 cycles, outperforming existing counterparts. This study illuminates potential COF‐based materials SICs achieve high density.

Language: Английский

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