Fluorine- and Acid-Free Strategy toward Scalable Fabrication of Two-Dimensional MXenes for Sodium-Ion Batteries

Nano Letters, Год журнала: 2023, Номер 23(11), С. 5217 - 5226

Опубликована: Май 18, 2023

MXenes are emerging 2D materials that have gained great attention because of their unique physical-chemical properties. However, the wide application is prohibited by high cost and environmentally harmful synthesis process. Here a fluoride- acid-free physical vacuum distillation strategy proposed to directly synthesize series MXenes. Specifically, introducing low-boiling-point element into MAX subsequently evaporating A elements via distillation, fluoride-free (Ti3C2Tx, Nb2CTx, Nb4C3Tx, Ta2CTx, Ti2NTx, Ti3CNTx, etc.) fabricated. This green one-step process without any acid/alkaline involved with all reactions inside tube furnace, avoiding contamination external environments. Besides, synthetic temperature controlled regulate layered structures specific surface areas Accordingly, synthesized Ti3C2Tx MXene exhibits improved sodium storage performance. method may provide an alternative for scalable production other materials.

Язык: Английский

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Ultrafast Synthesis of Graphene‐Embedded Cyclodextrin‐Metal‐Organic Framework for Supramolecular Selective Absorbency and Supercapacitor Performance

Advanced Science, Год журнала: 2023, Номер 10(31)

Опубликована: Авг. 27, 2023

Limited by preparation time and ligand solubility, synthetic protocols for cyclodextrin-based metal-organic framework (CD-MOF), as well subsequent derived materials with improved stability properties, still remains a challenge. Herein, an ultrafast, environmentally friendly, cost-effective microwave method is proposed, which induced graphene oxide (GO) to design CD-MOF/GOs. This applicable technique can control the crystal size of CD-MOFs from macro- nanocrystals. CD-MOF/GOs are investigated new type supramolecular adsorbent. It selectively adsorb dye molecule methylene green (MG) owing synergistic effect between hydrophobic nanocavity CDs, abundant O-containing functional groups GO in composites. Following high temperature calcination, resulting N, S co-doped porous carbons exhibit capacitance 501 F g-1 at 0.5 A , stable cycling 90.1% capacity retention after 5000 cycles. The carbon exhibits good electrochemical performance due its surface containing numerous electrochemically active sites adsorption carbonization. strategy incorporating variety molecules into optimizes properties their materials, furthering development toward fabrication zeitgeisty high-performance energy storage devices.

Язык: Английский

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Atomic Layer Deposition—A Versatile Toolbox for Designing/Engineering Electrodes for Advanced Supercapacitors

Advanced Science, Год журнала: 2023, Номер 11(1)

Опубликована: Ноя. 8, 2023

Atomic layer deposition (ALD) has become the most widely used thin-film technique in various fields due to its unique advantages, such as self-terminating growth, precise thickness control, and excellent quality. In energy storage domain, ALD shown great potential for supercapacitors (SCs) by enabling construction surface engineering of novel electrode materials. This review aims present a comprehensive outlook on development, achievements, design advanced electrodes involving application realizing high-performance SCs date, organized several sections this paper. Specifically, focuses understanding influence parameters electrochemical performance discusses nanostructured electrochemically active materials templates SCs. It examines highlights ALD's role passivating creating 3D nanoarchitectures. The relationship between synthesis procedures SC properties is analyzed guide future research preparing applications. Finally, it concluded suggesting directions scope development further leverage advantages fabricating new harness unexplored opportunities fabrication advanced-generation

Язык: Английский

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Juice Vesicles Bioreactors Technology for Constructing Advanced Carbon‐Based Energy Storage

Advanced Materials, Год журнала: 2024, Номер 36(24)

Опубликована: Фев. 20, 2024

The construction of high-quality carbon-based energy materials through biotechnology has always been an eager goal the scientific community. Herein, juice vesicles bioreactors (JVBs) bio-technology based on hesperidium (e.g., pomelo, waxberry, oranges) is first reported for preparation composites with controllable components, adjustable morphologies, and sizes. JVBs serve as miniature reaction vessels that enable sophisticated confined chemical reactions to take place, ultimately resulting in formations complex carbon composites. newly developed approach highly versatile can be compatible a wide range including metals, alloys, metal compounds. growth self-assembly mechanisms via are explained. For illustration, NiCo alloy nanoparticles successfully situ implanted into pomelo crosslinked (PCC) by JVBs, their applications sulfur/carbon cathodes lithium-sulfur batteries explored. well-designed PCC/NiCo-S electrode exhibits superior high-rate properties enhanced long-term stability. Synergistic reinforcement transportation ions/electrons interface catalytic conversion lithium polysulfides arising from architecture proposed aid DFT calculations. research provides novel biosynthetic route rational design fabrication advanced storage.

Язык: Английский

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Unveiling cutting-edge progress in the fundamentals of MXene: Synthesis strategies, energy and bio-environmental applications

Coordination Chemistry Reviews, Год журнала: 2024, Номер 511, С. 215870 - 215870

Опубликована: Апрель 21, 2024

Язык: Английский

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Photocatalytic and Electrochemical Synthesis of Biofuel via Efficient Valorization of Biomass

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract The excessive use of fossil fuels has significantly increased environmental stress, driving the need for green, sustainable biofuel alternatives. Innovations in photocatalysis (PC), electrocatalysis (EC), and their synergistic approaches, like photothermal catalysis (PTC), photo‐enzymatic (PENC), photoelectrocatalysis (PEC), offer advanced methods biomass conversion into biofuels, surpassing traditional limitations. However, comprehensive research on these processes is still lacking. This review aims to systematically analyze recent progress catalytic strategies biomass‐to‐biofuel conversion. It first describes characteristics, types, properties biofuels. Then, it explores fundamental mechanisms PC, EC, combined technologies. chemical pathways involved conversion—such as transesterification, esterification, hydrogenation, decarboxylation, bond cleavage, cyclization—are examined. Efficient catalyst design specific reactions factors influencing efficiency rates are also discussed. Additionally, this paper assesses impact economic benefits green technology production, offering a valuable reference energy application. addresses challenges deployment production suggests future directions, aiming provide scientific guidance technical support development vital field. In summary, underscores importance continued innovation promote solutions.

Язык: Английский

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Metal-organic framework-derived ultrafine CoSe nanocrystal@honeycomb porous carbon nanofiber as multidimensional advanced anode for sodium-ion batteries

Applied Surface Science, Год журнала: 2023, Номер 637, С. 157886 - 157886

Опубликована: Июнь 27, 2023

Язык: Английский

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Low-crystallinity conductive multivalence iron sulfide-embedded S-doped anode and high-surface area O-doped cathode of 3D porous N-rich graphitic carbon frameworks for high-performance sodium-ion hybrid energy storages

Energy storage materials, Год журнала: 2024, Номер 68, С. 103368 - 103368

Опубликована: Март 27, 2024

Язык: Английский

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TiO2/Multi-walled carbon nanotube electrospun nanofibers mats for enhanced Cr(VI) photoreduction

Journal of Cleaner Production, Год журнала: 2024, Номер 448, С. 141611 - 141611

Опубликована: Март 7, 2024

Язык: Английский

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Phase-Dependent Properties of Manganese Oxides and Applications in Electrovoltaics

ACS Omega, Год журнала: 2024, Номер 9(2), С. 2457 - 2467

Опубликована: Янв. 3, 2024

This study reports first-principles predictions as well experimental synthesis of manganese oxide nanoparticles under different conditions. The theoretical part the work comprised density functional theory (DFT)-based calculations and molecular dynamics (MD) simulations. extensive research efforts current challenges in enhancing performance lithium-ion battery (LIB) provided motivation to explore potential these materials for use an anode battery. structural analysis synthesized samples carried out using X-ray diffraction (XRD) confirmed tetragonal structure Mn3O4 on heating at 450 550 °C cubic Mn2O3 650 °C. structures are found form °C, but material appeared a nanoporous structure. Further, we investigated electrochemical functionality utilization LIBs via MD Based investigations their electrical, structural, diffusion, storage behavior, anodic character is predicted. findings indicated that 10 lithium atoms adsorb Mn2O3, whereas 5 when saturation taken into account. capacities estimated be 1697 585 mAh g–1, respectively. maximum value insertion voltage per Li 0.93 0.22 V Mn3O4. diffusion coefficient values 2.69 × 10–9 2.65 10–10 m2 s–1 Mn3O4, respectively, 300 K. climbing image nudged elastic band method (Cl-NEB) was implemented, which revealed activation energy barriers 0.30 0.75 eV high specific capacity, low barrier, open circuit Mn2O3-based LIBs.

Язык: Английский

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